Macros¶

#define RSB_SIZEOF(TYPE) RSB_NUMERICAL_TYPE_SIZE(TYPE)

Enumerations¶

enum rsb_opt_t { RSB_IO_WANT_VERBOSE_INIT =0x000001, RSB_IO_WANT_VERBOSE_EXIT =0x000002, RSB_IO_WANT_OUTPUT_STREAM =0x000003, RSB_IO_WANT_SORT_METHOD =0x000004, RSB_IO_WANT_CACHE_BLOCKING_METHOD =0x000005, RSB_IO_WANT_SUBDIVISION_MULTIPLIER =0x000006, RSB_IO_WANT_VERBOSE_ERRORS =0x000007, RSB_IO_WANT_BOUNDED_BOX_COMPUTATION =0x000008, RSB_IO_WANT_EXECUTING_THREADS =0x000009, RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE =0x000010, RSB_IO_WANT_MEMORY_HIERARCHY_INFO_STRING =0x000011, RSB_IO_WANT_IS_INITIALIZED_MARKER =0x000012, RSB_IO_WANT_MEM_ALLOC_CNT =0x000013, RSB_IO_WANT_MEM_ALLOC_TOT =0x000014, RSB_IO_WANT_LEAF_LEVEL_MULTIVEC =0x000015, RSB_IO_WANT_MAX_MEMORY_ALLOCATIONS =0x000016, RSB_IO_WANT_MAX_MEMORY_ALLOCATED =0x000017, RSB_IO_WANT_LIBRSB_ETIME =0x000018, RSB_IO_WANT_VERBOSE_TUNING =0x000019 }
library option values for rsb_lib_init, rsb_lib_set_opt_str, rsb_lib_reinit, rsb_lib_exit, rsb_lib_get_opt, rsb_lib_set_opt, or (deprecated) macros RSB_REINIT_SINGLE_VALUE_GET, RSB_REINIT_SINGLE_VALUE_SET, RSB_REINIT_SINGLE_VALUE, RSB_REINIT_SINGLE_VALUE_C_IOP.. enum rsb_extff_t { RSB_EXTF_NORM_ONE =0x00001001, RSB_EXTF_NORM_TWO =0x00001002, RSB_EXTF_NORM_INF =0x00001003, RSB_EXTF_SUMS_ROW =0x00001004, RSB_EXTF_SUMS_COL =0x00001005, RSB_EXTF_ASUMS_ROW =0x00001006, RSB_EXTF_ASUMS_COL =0x00001007, RSB_EXTF_DIAG =0x00000004 }
Extraction filter flags, to be used with rsb_mtx_get_nrm()/rsb_mtx_get_vec(). enum rsb_mif_t { RSB_MIF_INDEX_STORAGE_IN_BYTES__TO__SIZE_T =0x00000001, RSB_MIF_INDEX_STORAGE_IN_BYTES_PER_NNZ__TO__RSB_REAL_T =0x00000002, RSB_MIF_MATRIX_ROWS__TO__RSB_COO_INDEX_T =0x00000004, RSB_MIF_MATRIX_COLS__TO__RSB_COO_INDEX_T =0x00000008, RSB_MIF_MATRIX_NNZ__TO__RSB_NNZ_INDEX_T =0x00000010, RSB_MIF_TOTAL_SIZE__TO__SIZE_T =0x00000020, RSB_MIF_MATRIX_FLAGS__TO__RSB_FLAGS_T =0x00000040, RSB_MIF_MATRIX_TYPECODE__TO__RSB_TYPE_T =0x00000080, RSB_MIF_MATRIX_INFO__TO__CHAR_P =0x00000100, RSB_MIF_LEAVES_COUNT__TO__RSB_BLK_INDEX_T =0x00000200 }
Flags for getting matrix information via rsb_mtx_get_info()/rsb_mtx_get_info_str(). enum rsb_elopf_t { RSB_ELOPF_MUL =0x00000001, RSB_ELOPF_DIV =0x00000002, RSB_ELOPF_POW =0x00000004, RSB_ELOPF_NEG =0x00000008, RSB_ELOPF_SCALE_ROWS =0x00000010, RSB_ELOPF_SCALE_COLS =0x00000020, RSB_ELOPF_SCALE_ROWS_REAL =0x00000040, RSB_ELOPF_SCALE_COLS_REAL =0x00000080 }
Flags for specifying a particular elemental/row-wise operation with rsb_mtx_upd_vals().

Functions¶

rsb_err_t rsb_lib_init (struct rsb_initopts *iop)
rsb_err_t rsb_lib_set_opt (enum rsb_opt_t iof, const void *iop)
rsb_err_t rsb_lib_get_opt (enum rsb_opt_t iof, void *iop)
rsb_err_t rsb_lib_set_opt_str (const rsb_char_t *opnp, const rsb_char_t *opvp)
rsb_err_t rsb_lib_reinit (struct rsb_initopts *iop)
rsb_err_t rsb_lib_exit (struct rsb_initopts *iop)
struct rsb_mtx_t * rsb_mtx_alloc_from_coo_const (const void *VA, const rsb_coo_idx_t *IA, const rsb_coo_idx_t *JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t *errvalp)
struct rsb_mtx_t * rsb_mtx_alloc_from_coo_inplace (void *VA, rsb_coo_idx_t *IA, rsb_coo_idx_t *JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t *errvalp)
struct rsb_mtx_t * rsb_mtx_free (struct rsb_mtx_t *mtxAp)
rsb_err_t rsb_mtx_clone (struct rsb_mtx_t **mtxBpp, rsb_type_t typecode, rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_flags_t flags)
rsb_err_t rsb_spmv (rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, const void *Xp, rsb_coo_idx_t incX, const void *betap, void *Yp, rsb_coo_idx_t incY)
rsb_err_t rsb_spsv (rsb_trans_t transT, const void *alphap, const struct rsb_mtx_t *mtxTp, const void *Xp, rsb_coo_idx_t incX, void *Yp, rsb_coo_idx_t incY)
rsb_err_t rsb_spsm (rsb_trans_t transT, const void *alphap, const struct rsb_mtx_t *mtxTp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void *betap, const void *Bp, rsb_nnz_idx_t ldB, void *Cp, rsb_nnz_idx_t ldC)
rsb_err_t rsb_coo_sort (void *VA, rsb_coo_idx_t *IA, rsb_coo_idx_t *JA, rsb_nnz_idx_t nnzA, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_type_t typecode, rsb_flags_t flagsA)
rsb_err_t rsb_coo_cleanup (rsb_coo_idx_t *nnzp, void *VA, rsb_coo_idx_t *IA, rsb_coo_idx_t *JA, rsb_nnz_idx_t nnzA, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_type_t typecode, rsb_flags_t flagsA)
rsb_err_t rsb_file_mtx_get_dims (const char *filename, rsb_coo_idx_t *nrp, rsb_coo_idx_t *ncp, rsb_coo_idx_t *nzp, rsb_flags_t *flagsp)
rsb_err_t rsb_perror (void *stream, rsb_err_t errval)
rsb_err_t rsb_strerror_r (rsb_err_t errval, rsb_char_t *buf, size_t buflen)
rsb_err_t rsb_mtx_upd_vals (struct rsb_mtx_t *mtxAp, enum rsb_elopf_t elop_flags, const void *omegap)
rsb_err_t rsb_mtx_set_vals (struct rsb_mtx_t *mtxAp, const void *VA, const rsb_coo_idx_t *IA, const rsb_coo_idx_t *JA, rsb_nnz_idx_t nnz, rsb_flags_t flags)
rsb_err_t rsb_mtx_get_vals (const struct rsb_mtx_t *mtxAp, void *VA, const rsb_coo_idx_t *IA, const rsb_coo_idx_t *JA, rsb_nnz_idx_t nnz, rsb_flags_t flags)
rsb_err_t rsb_file_mtx_save (const struct rsb_mtx_t *mtxAp, const rsb_char_t *filename)
rsb_err_t rsb_file_vec_save (const rsb_char_t *filename, rsb_type_t typecode, const void *Yp, rsb_coo_idx_t yvl)
rsb_err_t rsb_file_vec_load (const rsb_char_t *filename, rsb_type_t typecode, void *Yp, rsb_coo_idx_t *yvlp)
struct rsb_mtx_t * rsb_file_mtx_load (const rsb_char_t *filename, rsb_flags_t flagsA, rsb_type_t typecode, rsb_err_t *errvalp)
struct rsb_mtx_t * rsb_sppsp (rsb_type_t typecode, rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_trans_t transB, const void *betap, const struct rsb_mtx_t *mtxBp, rsb_err_t *errvalp)
struct rsb_mtx_t * rsb_spmsp (rsb_type_t typecode, rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_trans_t transB, const void *betap, const struct rsb_mtx_t *mtxBp, rsb_err_t *errvalp)
rsb_err_t rsb_mtx_add_to_dense (const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_nnz_idx_t ldB, rsb_nnz_idx_t nrB, rsb_nnz_idx_t ncB, rsb_bool_t rowmajorB, void *Bp)
rsb_trans_t rsb_psblas_trans_to_rsb_trans (const char psbtrans)
struct rsb_mtx_t * rsb_mtx_alloc_from_csr_const (const void *VA, const rsb_coo_idx_t *RP, const rsb_coo_idx_t *JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t *errvalp)
struct rsb_mtx_t * rsb_mtx_alloc_from_csc_const (const void *VA, const rsb_coo_idx_t *IA, const rsb_coo_idx_t *CP, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t *errvalp)
struct rsb_mtx_t * rsb_mtx_alloc_from_csr_inplace (void *VA, rsb_nnz_idx_t *RP, rsb_coo_idx_t *JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t *errvalp)
rsb_err_t rsb_mtx_switch_to_csr (struct rsb_mtx_t *mtxAp, void **VAp, rsb_coo_idx_t **IAp, rsb_coo_idx_t **JAp, rsb_flags_t flags)
rsb_err_t rsb_mtx_get_coo (const struct rsb_mtx_t *mtxAp, void *VA, rsb_coo_idx_t *IA, rsb_coo_idx_t *JA, rsb_flags_t flags)
rsb_err_t rsb_mtx_get_csr (rsb_type_t typecode, const struct rsb_mtx_t *mtxAp, void *VA, rsb_nnz_idx_t *RP, rsb_coo_idx_t *JA, rsb_flags_t flags)
rsb_err_t rsb_mtx_get_rows_sparse (rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, void *VA, rsb_coo_idx_t *IA, rsb_coo_idx_t *JA, rsb_coo_idx_t frA, rsb_coo_idx_t lrA, rsb_nnz_idx_t *rnzp, rsb_flags_t flags)
rsb_err_t rsb_mtx_get_coo_block (const struct rsb_mtx_t *mtxAp, void *VA, rsb_coo_idx_t *IA, rsb_coo_idx_t *JA, rsb_coo_idx_t frA, rsb_coo_idx_t lrA, rsb_coo_idx_t fcA, rsb_coo_idx_t lcA, const rsb_coo_idx_t *IREN, const rsb_coo_idx_t *JREN, rsb_nnz_idx_t *rnzp, rsb_flags_t flags)
rsb_err_t rsb_spmm (rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void *Bp, rsb_nnz_idx_t ldB, const void *betap, void *Cp, rsb_nnz_idx_t ldC)
rsb_err_t rsb_spmsp_to_dense (rsb_type_t typecode, rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_trans_t transB, const void *betap, const struct rsb_mtx_t *mtxBp, rsb_nnz_idx_t ldC, rsb_nnz_idx_t nrC, rsb_nnz_idx_t ncC, rsb_bool_t rowmajorC, void *Cp)
rsb_err_t rsb_mtx_rndr (const char *filename, const struct rsb_mtx_t *mtxAp, rsb_coo_idx_t pmWidth, rsb_coo_idx_t pmHeight, rsb_marf_t rflags)
rsb_err_t rsb_file_mtx_rndr (void *pmp, const char *filename, rsb_coo_idx_t pmlWidth, rsb_coo_idx_t pmWidth, rsb_coo_idx_t pmHeight, rsb_marf_t rflags)
rsb_err_t rsb_mtx_switch_to_coo (struct rsb_mtx_t *mtxAp, void **VAp, rsb_coo_idx_t **IAp, rsb_coo_idx_t **JAp, rsb_flags_t flags)
rsb_err_t rsb_mtx_get_prec (void *opdp, const struct rsb_mtx_t *mtxAp, rsb_precf_t prec_flags, const void *ipdp)
rsb_err_t rsb_mtx_get_info (const struct rsb_mtx_t *mtxAp, enum rsb_mif_t miflags, void *minfop)
rsb_err_t rsb_mtx_get_info_str (const struct rsb_mtx_t *mtxAp, const rsb_char_t *mis, void *minfop, size_t buflen)
rsb_err_t rsb_mtx_get_nrm (const struct rsb_mtx_t *mtxAp, void *Np, enum rsb_extff_t flags)
rsb_err_t rsb_mtx_get_vec (const struct rsb_mtx_t *mtxAp, void *Dp, enum rsb_extff_t flags)
rsb_time_t rsb_time (void)
struct rsb_mtx_t * rsb_mtx_alloc_from_coo_begin (rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_flags_t flagsA, rsb_err_t *errvalp)
rsb_err_t rsb_mtx_alloc_from_coo_end (struct rsb_mtx_t **mtxApp)
rsb_err_t rsb_tune_spmm (struct rsb_mtx_t **mtxOpp, rsb_real_t *sfp, rsb_int_t *tnp, rsb_int_t maxr, rsb_time_t maxt, rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void *Bp, rsb_nnz_idx_t ldB, const void *betap, void *Cp, rsb_nnz_idx_t ldC)
rsb_err_t rsb_tune_spsm (struct rsb_mtx_t **mtxOpp, rsb_real_t *sfp, rsb_int_t *tnp, rsb_int_t maxr, rsb_time_t maxt, rsb_trans_t transA, const void *alphap, const struct rsb_mtx_t *mtxAp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void *Bp, rsb_nnz_idx_t ldB, const void *betap, void *Cp, rsb_nnz_idx_t ldC)

#define RSB_SIZEOF(TYPE) RSB_NUMERICAL_TYPE_SIZE(TYPE)¶

Use RSB_SIZEOF macro to get the size (in bytes) of a type supported by the library (e.g.: when allocating numerical vectors).

enum rsb_elopf_t¶

Flags for specifying a particular elemental/row-wise operation with rsb_mtx_upd_vals().

Enumerator

RSB_ELOPF_MUL

Elemental multiplication of the matrix by a specified scalar (usable with rsb_mtx_upd_vals(), binary operation).

RSB_ELOPF_DIV

Elemental division by a specified scalar (usable with rsb_mtx_upd_vals(), binary operation).

RSB_ELOPF_POW

Elemental power to a specified scalar (usable with rsb_mtx_upd_vals(), binary operation).

RSB_ELOPF_NEG

Elemental negation (usable with rsb_mtx_upd_vals(), unary operation).

RSB_ELOPF_SCALE_ROWS

Row wise scaling by a specified scaling vector (usable with rsb_mtx_upd_vals(), binary operation).

RSB_ELOPF_SCALE_COLS

Column wise scaling by a specified scaling vector (usable with rsb_mtx_upd_vals(), binary operation).

RSB_ELOPF_SCALE_ROWS_REAL

Row wise scaling by a specified scaling vector. If matrix is of a complex type, the argument is expected to be of the corresponding real type (assumed that that type has been enabled). (usable with rsb_mtx_upd_vals(), binary operation).

RSB_ELOPF_SCALE_COLS_REAL

Column wise scaling by a specified scaling vector. If matrix is of a complex type, the argument is expected to be of the corresponding real type (assumed that that type has been enabled). (usable with rsb_mtx_upd_vals(), binary operation).

enum rsb_extff_t¶

Extraction filter flags, to be used with rsb_mtx_get_nrm()/rsb_mtx_get_vec().

Enumerator

RSB_EXTF_NORM_ONE

rsb_mtx_get_nrm() flag value for computing the one-norm.

RSB_EXTF_NORM_TWO

rsb_mtx_get_nrm() flag value for computing the two-norm (Frobenius norm).

RSB_EXTF_NORM_INF

rsb_mtx_get_nrm() flag value for computing the infinity-norm.

RSB_EXTF_SUMS_ROW

rsb_mtx_get_vec() flag value for computing the sum along each row.

RSB_EXTF_SUMS_COL

rsb_mtx_get_vec() flag value for computing the sum along each column.

RSB_EXTF_ASUMS_ROW

rsb_mtx_get_vec() flag value for computing the absolute values sum, along each row.

RSB_EXTF_ASUMS_COL

rsb_mtx_get_vec() flag value for computing the absolute values sum, along each column.

RSB_EXTF_DIAG

rsb_mtx_get_vec() flag value for extracting the diagonal submatrix.

enum rsb_mif_t¶

Flags for getting matrix information via rsb_mtx_get_info()/rsb_mtx_get_info_str().

Enumerator

RSB_MIF_INDEX_STORAGE_IN_BYTES__TO__SIZE_T

Index storage occupation, in bytes. (size_t)

RSB_MIF_INDEX_STORAGE_IN_BYTES_PER_NNZ__TO__RSB_REAL_T

Index storage occupation per nnz, in bytes. (rsb_real_t)

RSB_MIF_MATRIX_ROWS__TO__RSB_COO_INDEX_T

Rows count(rsb_coo_idx_t)

RSB_MIF_MATRIX_COLS__TO__RSB_COO_INDEX_T

Columns count (rsb_coo_idx_t)

RSB_MIF_MATRIX_NNZ__TO__RSB_NNZ_INDEX_T

Nonzeroes count (rsb_nnz_idx_t)

RSB_MIF_TOTAL_SIZE__TO__SIZE_T

Total size, in bytes (size_t)

RSB_MIF_MATRIX_FLAGS__TO__RSB_FLAGS_T

Matrix flags (rsb_flags_t)

RSB_MIF_MATRIX_TYPECODE__TO__RSB_TYPE_T

Matrix type code (rsb_type_t)

RSB_MIF_MATRIX_INFO__TO__CHAR_P

Matrix info string, only for rsb_mtx_get_info_str() (rsb_char_t*)

RSB_MIF_LEAVES_COUNT__TO__RSB_BLK_INDEX_T

Leaf submatrices count (rsb_blk_idx_t)

enum rsb_opt_t¶

library option values for rsb_lib_init, rsb_lib_set_opt_str, rsb_lib_reinit, rsb_lib_exit, rsb_lib_get_opt, rsb_lib_set_opt, or (deprecated) macros RSB_REINIT_SINGLE_VALUE_GET, RSB_REINIT_SINGLE_VALUE_SET, RSB_REINIT_SINGLE_VALUE, RSB_REINIT_SINGLE_VALUE_C_IOP..

Enumerator

RSB_IO_WANT_VERBOSE_INIT

RSB_IO_WANT_VERBOSE_INIT prompts for a verbose initialization of the library: messages will be written to the file descriptor (FILE*) pointed by the value pointer when calling rsb_lib_init or rsb_lib_reinit.

RSB_IO_WANT_VERBOSE_EXIT

RSB_IO_WANT_VERBOSE_EXIT prompts for a verbose finalization of the library: messages will be written to the file descriptor (FILE*) pointed by the value pointer when calling rsb_lib_exit.

RSB_IO_WANT_OUTPUT_STREAM

Specifies the default output stream. Output (debug info) info will be written
to the file descriptor (FILE*) pointed by the value pointer.

RSB_IO_WANT_SORT_METHOD

Specifies the default sorting method. Specified as a pointed integer (rsb_int_t) number, in {[0],1}. (internal)

RSB_IO_WANT_CACHE_BLOCKING_METHOD

Specifies the default cache blocking method. Specified as a pointed integer (rsb_int_t) number, in {-1,[0],1}. (internal)

RSB_IO_WANT_SUBDIVISION_MULTIPLIER

Specifies a multiplier for finer (if >1.0) or coarser (if <1.0) subdivisions. Specified as a pointed (rsb_real_t) number, in {..,[1.0],..}. (internal)

RSB_IO_WANT_VERBOSE_ERRORS

Prompts for a verbose error reporting: messages will be written to the file descriptor (FILE*) pointed by the value pointer. Only meaningful if an interface error verbosity greater than 0 was set at configure time.

RSB_IO_WANT_BOUNDED_BOX_COMPUTATION

Prompts for bounded box computation, for a smoother submatrices locking; pointed rsb_int_t in {0,[1]}. (internal).

RSB_IO_WANT_EXECUTING_THREADS

Specifies the number of desired executing threads; pointed rsb_int_t in {[0],1,..}.

RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE

Specifies the level of interface verbosity; if setting, pointed rsb_int_t values should be in {[0],1,..}. Support may be enabled or disabled at build time via the --enable-internals-error-verbosity configure option. If disabled, only getting is supported and yields -1, but setting is not supported and the RSB_ERR_NO_STREAM_OUTPUT_CONFIGURED_OUT error will be returned.

RSB_IO_WANT_MEMORY_HIERARCHY_INFO_STRING

Specifies a custom memory hierarchy info string; pointed const rsb_char_t*; (may point to a NULL string pointer).

RSB_IO_WANT_IS_INITIALIZED_MARKER

Used for getting whether the library has been initialized (RSB_BOOL_TRUE) or not (RSB_BOOL_FALSE) ; pointed const rsb_bool_t*; (this is NOT for general users).

RSB_IO_WANT_MEM_ALLOC_CNT

Used for getting the count of memory allocations performed by librsb employing librsb's memory allocation wrapper (if disabled, will return zero); pointed const size_t*; (this is for debugging purposes).

RSB_IO_WANT_MEM_ALLOC_TOT

Used for getting the total amount of memory allocated by librsb employing librsb's memory allocation wrapper (if disabled, will return zero); pointed const size_t*; (this is for debugging purposes).

RSB_IO_WANT_LEAF_LEVEL_MULTIVEC

Specifies whether the default multi-vector ops shall act at a leaf level (default value of 0 is yes). Specified as a pointed integer (rsb_int_t) number, in {-1,[0]}. (internal)

RSB_IO_WANT_MAX_MEMORY_ALLOCATIONS

Specifies an upper limit to the count of allocated memory areas (default value of 0 means no limit). Specified as a pointed size_t. Only works if the memory wrapper (--enable-allocator-wrapper) has been specified at configure time.

RSB_IO_WANT_MAX_MEMORY_ALLOCATED

Specifies an upper limit to the amount of allocated memory (default value of 0 means no limit). Specified as a pointed size_t. Only works if the memory wrapper (--enable-allocator-wrapper) has been specified at configure time.

RSB_IO_WANT_LIBRSB_ETIME

Represents time spent in librsb. Specified as a pointed rsb_time_t. Only works if statistics collection (--enable-librsb-stats) was specified at configure time.

RSB_IO_WANT_VERBOSE_TUNING

Auto tuning verbosity level for rsb_tune_spmm/rsb_tune_spsm. If 0, no verbosity; if 1, verbose; if 2, verbose with trace files being dumped.

rsb_err_t rsb_coo_cleanup (rsb_coo_idx_t * nnzp, void * VA, rsb_coo_idx_t * IA, rsb_coo_idx_t * JA, rsb_nnz_idx_t nnzA, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_type_t typecode, rsb_flags_t flagsA)¶

Compacts the given COO input arrays representing a sparse matrix $A$. Will either sum together duplicates or use the last one, depending on whether RSB_FLAG_DUPLICATES_KEEP_LAST or RSB_FLAG_DUPLICATES_SUM is present in flagsA.

It is important that the input is sorted and flagsA shall contain RSB_FLAG_SORTED_INPUT, otherwise the algorithm's complexity will be quadratic.

Parameters

Returns

See also

Warning

Note

Examples:

       rsb_err_t errval = RSB_ERR_NO_ERROR;


        rsb_nnz_idx_t nnzA = 4;


        const rsb_coo_idx_t  nrA = 4;


        const rsb_coo_idx_t  ncA = 4;


        rsb_coo_idx_t    IA[] = { 1, 1, 1, 2 };


        rsb_coo_idx_t    JA[] = { 1, 1, 3, 2 };


        RSB_DEFAULT_TYPE VA[] = { 1, 10, 13, 22 };


        const rsb_type_t typecode = RSB_NUMERICAL_TYPE_DEFAULT;


        rsb_flags_t flagsA = RSB_FLAG_DUPLICATES_SUM | RSB_FLAG_SORTED_INPUT;


        // IA={1,1,1,2} JA={1,1,3,2} VA={1,10,13,22} nnzA=4 nrA=4 nca=4


        if((errval = rsb_lib_init(RSB_NULL_INIT_OPTIONS))


                        != RSB_ERR_NO_ERROR) goto err;


        errval = rsb_coo_cleanup(&nnzA, VA, IA, JA,


                 nnzA, nrA, ncA, typecode, flagsA );


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_coo_cleanup!0);


                goto err;


        }


        // IA={1,1,2} JA={1,3,2} VA={11,13,22} nnzA=3 nrA=4 nca=4

        rsb_err_t errval = RSB_ERR_NO_ERROR;


        rsb_nnz_idx_t nnzA = 3;


        const rsb_coo_idx_t  nrA = 2;


        const rsb_coo_idx_t  ncA = 2;


        rsb_coo_idx_t    IA[] = { 1, 1, 1 };


        rsb_coo_idx_t    JA[] = { 2, 1, 1 };


        RSB_DEFAULT_TYPE VA[] = { 1, 2, 3 };


        const rsb_type_t typecode = RSB_NUMERICAL_TYPE_DEFAULT;


        const rsb_flags_t flagsA = RSB_FLAG_DUPLICATES_SUM 


                        | RSB_FLAG_SORTED_INPUT


                        | RSB_FLAG_FORTRAN_INDICES_INTERFACE;


        // IA={1,1,1} JA={2,1,1} VA={1,2,3} nnzA=3 nrA=2 nca=2


        errval =rsb_coo_sort(VA, IA, JA, nnzA, nrA, ncA,  typecode, flagsA);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_coo_cleanup!0);


                goto err;


        }


        // IA={1,1,1} JA={1,1,2} VA={2,3,1} nnzA=3 nrA=2 nca=2


        errval = rsb_coo_cleanup(&nnzA, VA, IA, JA, nnzA,


                 nrA, ncA, typecode, flagsA );


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_coo_cleanup!0);


                goto err;


        }


        // IA={1,1} JA={1,2} VA={5,1} nnzA=2 nrA=2 nca=2

rsb_err_t rsb_coo_sort (void * VA, rsb_coo_idx_t * IA, rsb_coo_idx_t * JA, rsb_nnz_idx_t nnzA, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_type_t typecode, rsb_flags_t flagsA)¶

Sorts row-major the given COO input arrays representing a sparse matrix $A$.

Parameters

Returns

See also

Note

rsb_err_t rsb_file_mtx_get_dims (const char * filename, rsb_coo_idx_t * nrp, rsb_coo_idx_t * ncp, rsb_coo_idx_t * nzp, rsb_flags_t * flagsp)¶

Reads structural information (dimensions, structural flags) for a matrix file into user specified (and optionally NULL) variables.

Parameters

Returns

Example getting dimensions of a sparse matrix stored in a Matrix Market file:

       if(RSB_ERR_NO_ERROR!=(errval =


                rsb_file_mtx_get_dims("pd.mtx",&nrA,&ncA,&nnzA,NULL)))


        {


                if(errval != RSB_ERR_UNSUPPORTED_FEATURE)


                        goto err; /* may have not configured what needed */


        }

Note

%%MatrixMarket matrix coordinate real symmetric
%
% A Hilbert Matrix of order 3, so with 3 rows, 3 columns, and 6 nonzeroes.
%
3 3 6
1 1 1.0
2 1 0.5
2 2 0.33
3 1 0.33
3 2 0.25
3 3 0.2

See also

struct rsb_mtx_t * rsb_file_mtx_load (const rsb_char_t * filename, rsb_flags_t flagsA, rsb_type_t typecode, rsb_err_t * errvalp)¶

Loads a sparse matrix from the specified matrix file, assembling it in the format specified by flags, using the numerical type representation as specified by the user. Extra input errors or warnings verbosity can be enabled via the ./configure --enable-internals-error-verbosity option.

Parameters

Returns

Note

%%MatrixMarket matrix coordinate real symmetric
%
% A Hilbert Matrix of order 3, so with 3 rows, 3 columns, and 6 nonzeroes.
%
3 3 6
1 1 1.0
2 1 0.5
2 2 0.33
3 1 0.33
3 2 0.25
3 3 0.2

Example loading a matrix from a Matrix Market file:

        mtxAp = rsb_file_mtx_load("pd.mtx",


                RSB_FLAG_NOFLAGS,typecode,NULL);


        if(!mtxAp)


        {


                return EXIT_FAILURE;


        }

See also

rsb_err_t rsb_file_mtx_rndr (void * pmp, const char * filename, rsb_coo_idx_t pmlWidth, rsb_coo_idx_t pmWidth, rsb_coo_idx_t pmHeight, rsb_marf_t rflags)¶

Renders as pixel map the matrix contained in a matrix file.

Parameters

Returns

Note

Example rendering a matrix from a Matrix Market file to a pixelmap in memory:

       /* matrices can be rendered from file to a pixelmap as well */


        {


                unsigned char pixmap[3*2*2];


                if(RSB_ERR_NO_ERROR!=(errval =


                rsb_file_mtx_rndr(pixmap,"pd.mtx",2,2,2,RSB_MARF_RGB)))


                        goto err;


        }

See also

rsb_err_t rsb_file_mtx_save (const struct rsb_mtx_t * mtxAp, const rsb_char_t * filename)¶

Saves the given matrix to the specified matrix file.

Parameters

Returns

Warning

Note

%%MatrixMarket matrix coordinate real symmetric
%
% A Hilbert Matrix of order 3, so with 3 rows, 3 columns, and 6 nonzeroes.
%
3 3 6
1 1 1.0
2 1 0.5
2 2 0.33
3 1 0.33
3 2 0.25
3 3 0.2

Example, printing a matrix to standard output:

       if(RSB_ERR_NO_ERROR!=(errval = rsb_file_mtx_save(mtxAp,NULL)))


        {


                if(errval != RSB_ERR_UNSUPPORTED_FEATURE)


                        goto err;


        }

See also

rsb_err_t rsb_file_vec_load (const rsb_char_t * filename, rsb_type_t typecode, void * Yp, rsb_coo_idx_t * yvlp)¶

Loads a dense vector from the specified file, using the numerical type representation as specified by the user. This function is intended to be called in two steps: first with Yp=NULL, in order to write the vector length to *yvlp ; then, with yvlp=NULL, to get Yp written.

Parameters

Returns

Example loading vector matrix from file

 /* also vectors can be loaded */


        if(RSB_ERR_NO_ERROR!=(errval = 


                rsb_file_vec_load("vf.mtx",typecode,NULL,&vl )))


                goto err;


        /* we expect vf.mtx to be 6 rows long */


        if( vl != 6 )


        {


                goto err;


        }


        if(RSB_ERR_NO_ERROR!=(errval = 


                rsb_file_vec_load("vf.mtx",typecode,XV, NULL )))


                goto err;

Note

%%MatrixMarket matrix array complex general
% Test MatrixMarket file with a complex vector.
% Note: a blank line like the following is OK.
6           1
11.000000000000000E+000 12.000000000000000E+000 
21.000000000000000E+000 22.000000000000000E+000 
31.000000000000000E+000 32.000000000000000E+000 
41.000000000000000E+000 42.000000000000000E+000 
51.000000000000000E+000 52.000000000000000E+000 
61.000000000000000E+000 62.000000000000000E+000 

See also

rsb_err_t rsb_file_vec_save (const rsb_char_t * filename, rsb_type_t typecode, const void * Yp, rsb_coo_idx_t yvl)¶

Saves a dense vector to the specified file, using the numerical type representation as specified by the user. This function assumes Yp!=NULL and yvl>0.

Parameters

Returns

Note

%%MatrixMarket matrix array complex general
% Test MatrixMarket file with a complex vector.
% Note: a blank line like the following is OK.
6           1
11.000000000000000E+000 12.000000000000000E+000 
21.000000000000000E+000 22.000000000000000E+000 
31.000000000000000E+000 32.000000000000000E+000 
41.000000000000000E+000 42.000000000000000E+000 
51.000000000000000E+000 52.000000000000000E+000 
61.000000000000000E+000 62.000000000000000E+000 

Example printing to standard output:

      errval = rsb_file_vec_save(NULL, typecode, X, nrA);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error printing vector!0);


                goto err;


        }

See also

rsb_err_t rsb_lib_exit (struct rsb_initopts * iop)¶

Finalize librsb.
rsb_lib_exit should be called after having freed all matrices.
If not all of the data structures were properly deallocated before, this function may still attempt finalizing the library and return the RSB_ERR_MEMORY_LEAK error code (this depends on the --enable-allocator-wrapper configure time option). Any allocated memory will be lost (librsb does not keep track of allocated matrices).
Internal library state will be cleared. After this call, it is legal to initialize the library again, by calling rsb_lib_init().
On an error, the library state may be inconsistent, so it is advisable to either terminate program execution (rather than forcing a new initialization with rsb_lib_init()).
Parameter iop is reserved for future use; for now it is safe to pass RSB_NULL_EXIT_OPTIONS.
It should be safe to call rsb_lib_exit() more than once.

Parameters

Returns

An example snippet declaring an error variable accumulator at program's beginning:

      rsb_err_t errval = RSB_ERR_NO_ERROR;

and finalizing the library at program's end:

        if((errval = rsb_lib_exit(RSB_NULL_EXIT_OPTIONS))


                        != RSB_ERR_NO_ERROR)


        {


                printf("Error finalizing the library!0);


                goto err;


        }

See also

rsb_err_t rsb_lib_get_opt (enum rsb_opt_t iof, void * iop)¶

Gets value of a library option.
A value specified by the request flag iof will be fetched from the library internal state and *iop will be updated accordingly.

Parameters

See also

rsb_err_t rsb_lib_init (struct rsb_initopts * iop)¶

This is the library initialization function.
It must be called only once before using any other library function.
It is allowed to call it again after rsb_lib_exit().
To fine-tune the library behaviour, one may specify a number of options via the iop parameter.
Options may be specified also after rsb_lib_init() by calling rsb_lib_reinit().
One may call RSB_REINIT_SINGLE_VALUE_GET with flag RSB_IO_WANT_IS_INITIALIZED_MARKER to verify whether the library has been initialized or not.
If the RSB_NUM_THREADS environment variable is set, rsb_lib_init() uses it and sets the number of active threads, thus overriding what detected by the OpenMP runtime (e.g. OMP_NUM_THREADS).

Parameters

Returns

An example snippet declaring an error variable accumulator at program's beginning:

    rsb_err_t errval = RSB_ERR_NO_ERROR;

and initializing the library soon thereafter:

        if((errval = rsb_lib_init(RSB_NULL_INIT_OPTIONS)) != 


                        RSB_ERR_NO_ERROR)


        {


                printf("Error initializing the library!0);


                goto err;


        }

See also

rsb_err_t rsb_lib_reinit (struct rsb_initopts * iop)¶

Changes the library operation options which were set at initialization time either by a user or as defaults.
Not all options may be supported, depending on build time library settings.
If an unsupported option was specified, an appropriate error (e.g.: RSB_ERR_UNSUPPORTED_OPERATION) will be returned.

On the first error, option processing is interrupted and the remaining options (if any) are not processed.
Program execution may continue safely even if an error code is returned (that is, library status should be consistent).

Parameters

Returns

    rsb_err_t errval = RSB_ERR_NO_ERROR;


        struct rsb_initopts io;


        rsb_int_t ione={1};


        enum rsb_opt_t keys[]={RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE};


        void*values[]={&ione};


        io.action=RSB_IO_SPECIFIER_SET;


        io.keys=keys;


        io.values=values;


        io.n_pairs=1;


        if((errval = rsb_lib_init(RSB_NULL_INIT_OPTIONS))


                        != RSB_ERR_NO_ERROR) goto err;


        // won't print anything


        if((errval = rsb_lib_reinit(&io))


                        != RSB_ERR_NO_ERROR) goto err;


        // may print verbose message (depends on configure)


        if((errval = rsb_lib_reinit(NULL))


                        != RSB_ERR_NO_ERROR) goto err;


        // may print verbose message (depends on configure)


        if((errval = rsb_lib_set_opt_str(


                "RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE","0"))


                        != RSB_ERR_NO_ERROR) goto err;


        // won't print anything anymore


        if((errval = rsb_lib_exit(&io))


                        != RSB_ERR_NO_ERROR) goto err;

See also

rsb_err_t rsb_lib_set_opt (enum rsb_opt_t iof, const void * iop)¶

Sets value of a library option.
A value specified by the request flag iof will be fetched from *iop and will be used to update the selected option in the library internal state.

Parameters

Example snip:

                rsb_int_t evi=1; 


                /* Setting a single optional library parameter. */


                errval = rsb_lib_set_opt(


                        RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE, &evi);


                if(errval != RSB_ERR_NO_ERROR)


                {


                       /*! [Copy error message to string] */


                        char errbuf[256];


                        rsb_strerror_r(errval,&errbuf[0],sizeof(errbuf));


                        printf("Failed setting the"


                        " RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE"


                        " library option (reason string:0s).0,errbuf);


                       /*! [Copy error message to string] */


                        if(errval&RSB_ERRS_UNSUPPORTED_FEATURES)


                        {


                          printf("This error may be safely ignored.0);


                        }


                        else


                        {


                          printf("Some unexpected error occurred!0);


                          goto err;


                        }


                }


                else


                {


                        printf("Setting back the "


                                "RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE"


                                " library option.0);


                        evi = 0;


                        errval = rsb_lib_set_opt(RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE,


                                        &evi);


                        errval = RSB_ERR_NO_ERROR;


                }

See also

rsb_err_t rsb_lib_set_opt_str (const rsb_char_t * opnp, const rsb_char_t * opvp)¶

Specifies individual library options in order to fine-tune the library behaviour.
Both the option name and the value shall be expressed as strings, identical to their preprocessor identifiers (see rsb_opt_t ). The opnp string will be translated internally to the corresponding request flag values, and the passed value will be parsed out of the opvp string.

Parameters

Returns

        rsb_err_t errval = RSB_ERR_NO_ERROR;


        struct rsb_initopts io;


        rsb_int_t ione={1};


        enum rsb_opt_t keys[]={RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE};


        void*values[]={&ione};


        io.action=RSB_IO_SPECIFIER_SET;


        io.keys=keys;


        io.values=values;


        io.n_pairs=1;


        if((errval = rsb_lib_init(RSB_NULL_INIT_OPTIONS))


                        != RSB_ERR_NO_ERROR) goto err;


        // won't print anything


        if((errval = rsb_lib_reinit(&io))


                        != RSB_ERR_NO_ERROR) goto err;


        // may print verbose message (depends on configure)


        if((errval = rsb_lib_reinit(NULL))


                        != RSB_ERR_NO_ERROR) goto err;


        // may print verbose message (depends on configure)


        if((errval = rsb_lib_set_opt_str(


                "RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE","0"))


                        != RSB_ERR_NO_ERROR) goto err;


        // won't print anything anymore


        if((errval = rsb_lib_exit(&io))


                        != RSB_ERR_NO_ERROR) goto err;

See also

rsb_err_t rsb_mtx_add_to_dense (const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_nnz_idx_t ldB, rsb_nnz_idx_t nrB, rsb_nnz_idx_t ncB, rsb_bool_t rowmajorB, void * Bp)¶

Dense matrix B is updated by adding scaled sparse matrix ${A}$ to it: $B <- B + alpha {A} $

Parameters

Returns

Example snip:

  const rsb_nnz_idx_t ldB = 4, nrB = 3, ncB = 3;


        const rsb_bool_t rowmajorB = RSB_BOOL_TRUE;


        RSB_DEFAULT_TYPE Bp[ /*ldB*nrB*/ ] = {


                -1, -1, -1, -1,


                -1, -1, -1, -1,


                -1, -1, -1, -1


        };


        RSB_DEFAULT_TYPE *alphap = NULL;


        errval = rsb_mtx_add_to_dense(alphap, mtxAp, ldB,


                 nrB, ncB, rowmajorB, Bp);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_mtx_add_to_dense!0);


                goto err;


        }

Note

See also

struct rsb_mtx_t * rsb_mtx_alloc_from_coo_begin (rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_flags_t flagsA, rsb_err_t * errvalp)¶

Creates an empty matrix structure in assembly state. The user then populates it using rsb_mtx_set_vals() repeatedly; then assembles it with rsb_mtx_alloc_from_coo_end().

Parameters

Returns

Warning

See also

struct rsb_mtx_t * rsb_mtx_alloc_from_coo_const (const void * VA, const rsb_coo_idx_t * IA, const rsb_coo_idx_t * JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t * errvalp)¶

Given as input COO arrays VA,IA,JA, allocates and assembles an RSB matrix using separate arrays.

Parameters

Returns

Example snip:

     mtxAp = rsb_mtx_alloc_from_coo_const(


                        VA,IA,JA,nnzA,typecode,nrA,ncA,


                        brA,bcA,RSB_FLAG_NOFLAGS,NULL);


        if(!mtxAp)


        {


                return EXIT_FAILURE;


        }

And another, with duplicate sum flags:

        mtxAp = rsb_mtx_alloc_from_coo_const(


                VA,IA,JA,nnzA,typecode,nrA,ncA,brA,bcA,


                RSB_FLAG_NOFLAGS    /* default format will be chosen */


                |RSB_FLAG_DUPLICATES_SUM/* duplicates will be summed */


                        ,&errval);


        if((!mtxAp) || (errval != RSB_ERR_NO_ERROR))


        {


                printf("Error while allocating the matrix!0);


                goto err;


        }

And yet another, allocating a triangular matrix:

        mtxAp = rsb_mtx_alloc_from_coo_const(


                VA,IA,JA,nnzA,typecode,nrA,ncA,brA,bcA,


                RSB_FLAG_DEFAULT_RSB_MATRIX_FLAGS /* force rsb */


                | RSB_FLAG_DUPLICATES_SUM/* sum dups */


                | RSB_FLAG_UNIT_DIAG_IMPLICIT/* ask diagonal implicit */


                | RSB_FLAG_TRIANGULAR /* need triangle for spsv */


                , &errval);


        if((!mtxAp) || (errval != RSB_ERR_NO_ERROR))


        {


                printf("Error while allocating the matrix!0);


                goto err;


        }


        printf("Correctly allocated a matrix with %ld nonzeroes.0,


                (long int)nnzA);

See also

rsb_err_t rsb_mtx_alloc_from_coo_end (struct rsb_mtx_t ** mtxApp)¶

Assembles RSB arrays for a matrix in build state created with rsb_mtx_alloc_from_coo_begin() and populated with rsb_mtx_set_vals().
After assembly, any operation on the matrix is allowed.

Parameters

Returns

Warning

Note

See also

struct rsb_mtx_t * rsb_mtx_alloc_from_coo_inplace (void * VA, rsb_coo_idx_t * IA, rsb_coo_idx_t * JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t * errvalp)¶

Given as input COO arrays VA,IA,JA, allocates and assembles an RSB matrix reusing input arrays.
Assumes all three VA,IA,JA arrays are at least max(nnzA,nrA+1,ncA+1) sized. The user is expected NOT to use these arrays until the matrix has been destroyed with rsb_mtx_free(). Then, it is possible to use these arrays again.

Parameters

Returns

See also

struct rsb_mtx_t * rsb_mtx_alloc_from_csc_const (const void * VA, const rsb_coo_idx_t * IA, const rsb_coo_idx_t * CP, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t * errvalp)¶

Given input read only CSC format arrays, allocates and assembles an RSB matrix (stored in separate arrays).

Parameters

Returns

See also

Example:

 rsb_err_t errval = RSB_ERR_NO_ERROR;


        struct rsb_mtx_t *mtxAp = NULL;


        const rsb_blk_idx_t brA = RSB_DEFAULT_BLOCKING,


                            bcA = RSB_DEFAULT_BLOCKING;


        const rsb_nnz_idx_t nnzA = 4;


        const rsb_coo_idx_t  nrA = 3;


        const rsb_coo_idx_t  ncA = 3;


        const rsb_coo_idx_t    IA[] = { 0, 2, 1, 2 };


        const rsb_coo_idx_t    CP[] = { 0, 2, 3, 4 };


        const RSB_DEFAULT_TYPE VA[] = { 11, 31, 22, 33 };


        const rsb_type_t typecode = RSB_NUMERICAL_TYPE_DEFAULT;


        if(rsb_lib_init(RSB_NULL_INIT_OPTIONS)!=RSB_ERR_NO_ERROR)


        {


                return EXIT_FAILURE;


        }


        mtxAp = rsb_mtx_alloc_from_csc_const(


                        VA,IA,CP,nnzA,typecode,nrA,ncA,


                        brA,bcA,RSB_FLAG_NOFLAGS,NULL);


        if(!mtxAp)


        {


                return EXIT_FAILURE;


        }


        rsb_file_mtx_save(mtxAp, NULL);

struct rsb_mtx_t * rsb_mtx_alloc_from_csr_const (const void * VA, const rsb_coo_idx_t * RP, const rsb_coo_idx_t * JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t * errvalp)¶

Given input read only CSR format arrays, allocates and assembles an RSB matrix (stored in separate arrays).

Parameters

Returns

See also

struct rsb_mtx_t * rsb_mtx_alloc_from_csr_inplace (void * VA, rsb_nnz_idx_t * RP, rsb_coo_idx_t * JA, rsb_nnz_idx_t nnzA, rsb_type_t typecode, rsb_coo_idx_t nrA, rsb_coo_idx_t ncA, rsb_blk_idx_t brA, rsb_blk_idx_t bcA, rsb_flags_t flagsA, rsb_err_t * errvalp)¶

Given as input CSR arrays VA,RP,JA , allocates and assembles an RSB matrix reusing input arrays.
Assumes all three VA,IA,JA arrays are at least max(nnzA,nrA+1,ncA+1) sized. The user is expected NOT to use these arrays until the matrix has been destroyed with rsb_mtx_free(). Then, it is possible to use these arrays again.

Parameters

Returns

See also

rsb_err_t rsb_mtx_clone (struct rsb_mtx_t ** mtxBpp, rsb_type_t typecode, rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_flags_t flags)¶

This function clones a given matrix, allocating a fresh data structure or overwriting an existing one.
Target type (specified by typecode) can be different from that in the matrix. If alphap=NULL, the cloned matrix will not be scaled.
This new structure will be completely separated and independent from the original one.
Examples:

// will clone the matrix exactly
errval = rsb_mtx_clone(&mtxBp,RSB_NUMERICAL_TYPE_SAME_TYPE,RSB_TRANSPOSITION_N,NULL,mtxAp,RSB_FLAG_IDENTICAL_FLAGS);
// will clone the transpose of the matrix
errval = rsb_mtx_clone(&mtxBp,RSB_NUMERICAL_TYPE_SAME_TYPE,RSB_TRANSPOSITION_T,NULL,mtxAp,RSB_FLAG_IDENTICAL_FLAGS);
// will clone the lower triangle of the matrix
errval = rsb_mtx_clone(&mtxBp,RSB_NUMERICAL_TYPE_SAME_TYPE,RSB_TRANSPOSITION_N,NULL,mtxAp,RSB_FLAG_TRIANGULAR|RSB_FLAG_LOWER);

Parameters

Returns

Example snip:

        if( RSB_ERR_NO_ERROR != (errval =


                rsb_mtx_clone(&mtxAp,RSB_NUMERICAL_TYPE_SAME_TYPE,


                RSB_TRANSPOSITION_T,NULL,mtxAp,RSB_FLAG_IDENTICAL_FLAGS)))


        {


                goto err;


        }

See also

struct rsb_mtx_t * rsb_mtx_free (struct rsb_mtx_t * mtxAp)¶

Frees a previously allocated sparse matrix structure.
In the case the matrix has the RSB_FLAG_EXTERNALLY_ALLOCATED_ARRAYS flag, the main three data arrays VA,IA,JA will not be freed by rsb_mtx_free (see rsb_mtx_alloc_from_coo_inplace,rsb_mtx_alloc_from_csr_inplace).

Parameters

Returns

Example freeing a sparse matrix:

      rsb_mtx_free(mtxAp);

See also

rsb_err_t rsb_mtx_get_coo (const struct rsb_mtx_t * mtxAp, void * VA, rsb_coo_idx_t * IA, rsb_coo_idx_t * JA, rsb_flags_t flags)¶

Returns the matrix converted in a coordinate storage format.
Elements will be stored in no particular order.
If there are structural or fill-in zero elements, these will be skipped.
Writes as many entries as there are nonzeroes (use rsb_mtx_get_info(mtxAp,RSB_MIF_MATRIX_NNZ__TO__RSB_NNZ_INDEX_T,&nnz)) to find out how many in order to allocate the arrays correctly.

Parameters

Returns

See also

rsb_err_t rsb_mtx_get_coo_block (const struct rsb_mtx_t * mtxAp, void * VA, rsb_coo_idx_t * IA, rsb_coo_idx_t * JA, rsb_coo_idx_t frA, rsb_coo_idx_t lrA, rsb_coo_idx_t fcA, rsb_coo_idx_t lcA, const rsb_coo_idx_t * IREN, const rsb_coo_idx_t * JREN, rsb_nnz_idx_t * rnzp, rsb_flags_t flags)¶

Writes in COO format the specified submatrix.
Works in two stages: first the user invokes it with VA,IA,JA set to NULL to get *rnzp. Then the VA,IA,JA arrays can be allocated, and the function called again, this time with rnzp=NULL but the VA,IA,JA arrays pointers non NULL (or at least, one of them).

Parameters

Returns

Examples:

        rsb_coo_idx_t nzi;


        rsb_coo_idx_t *IA = NULL;


        rsb_coo_idx_t *JA = NULL;


        const rsb_coo_idx_t IREN[]={0,1,2,3};


        const rsb_coo_idx_t JREN[]={3,2,1,0};


        RSB_DEFAULT_TYPE *VA = NULL;


        const size_t so = sizeof(RSB_DEFAULT_TYPE);


        const size_t si = sizeof(rsb_coo_idx_t);


        rsb_err_t errval;


        rsb_flags_t flagsA = RSB_FLAG_NOFLAGS;


        rsb_nnz_idx_t rnz = 0;


        rsb_coo_idx_t frA=0,lrA=1; // first two rows


        rsb_coo_idx_t fcA=0,lcA=4; // 5 (all) columns


        // get the nnz count only


        errval=rsb_mtx_get_coo_block


                (mtxAp,NULL,NULL,NULL,frA,lrA,fcA,lcA,NULL,NULL,&rnz,flagsA);


        if(errval != RSB_ERR_NO_ERROR )


                goto err;


        // allocate VA, IA, JA to rnz elements


        IA = calloc(rnz, si);


        JA = calloc(rnz, si);


        VA = calloc(rnz, so);


        // get the  rnz  values then


        errval=rsb_mtx_get_coo_block


                (mtxAp,  VA,  IA,  JA,frA,lrA,fcA,lcA,NULL,NULL,NULL,flagsA);


        if(errval != RSB_ERR_NO_ERROR )


                goto err;


        for(nzi=0;nzi<rnz;++nzi)


                printf("%d/%d  %d %d -> %d0,(int)nzi,(int)rnz,


                        (int)IA[nzi],(int)JA[nzi],(int)VA[nzi]);


        // get the  rnz  values again, renumbered


        errval=rsb_mtx_get_coo_block


                (mtxAp,  VA,  IA,  JA,frA,lrA,fcA,lcA,IREN,JREN,NULL,flagsA);


        if(errval != RSB_ERR_NO_ERROR )


                goto err;


        for(nzi=0;nzi<rnz;++nzi)


                printf("%d/%d  %d %d -> %d0,(int)nzi,(int)rnz,


                        (int)IA[nzi],(int)JA[nzi],(int)VA[nzi]);


        free(VA);


        free(IA);


        free(JA);

       And other examples:

// get nnz count first
errval=rsb_mtx_get_coo_block(mtxAp,NULL,NULL,NULL,frA,lrA,fcA,lcA,NULL,NULL,&rnz,flags )
// allocate VA, IA, JA to rnz elements
...
// get the  rnz  values then
errval=rsb_mtx_get_coo_block(mtxAp,  VA,  IA,  JA,frA,lrA,fcA,lcA,NULL,NULL,NULL,flags )

Warning

See also

rsb_err_t rsb_mtx_get_csr (rsb_type_t typecode, const struct rsb_mtx_t * mtxAp, void * VA, rsb_nnz_idx_t * RP, rsb_coo_idx_t * JA, rsb_flags_t flags)¶

Fills the given arrays with the matrix expressed in the CSR format.

Parameters

Returns

See also

rsb_err_t rsb_mtx_get_info (const struct rsb_mtx_t * mtxAp, enum rsb_mif_t miflags, void * minfop)¶

Returns a specified matrix (numerical) property.

Parameters

Returns

Example snip:

 rsb_real_t isopnnz;


        const enum rsb_mif_t miflags = 


                RSB_MIF_INDEX_STORAGE_IN_BYTES_PER_NNZ__TO__RSB_REAL_T;


        errval = rsb_mtx_get_info(mtxAp, miflags, &isopnnz);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_mtx_get_info!0);


                goto err;


        }


        printf("RSB matrix uses %lf bytes per nnz.0,(double)isopnnz);


        

See also

rsb_err_t rsb_mtx_get_info_str (const struct rsb_mtx_t * mtxAp, const rsb_char_t * mis, void * minfop, size_t buflen)¶

Returns a specified matrix (numerical) property, via a string form query.

Parameters

Returns

Example snip:

   rsb_mtx_get_info_str(mtxAp,"RSB_MIF_MATRIX_INFO__TO__CHAR_P",


                        ib,sizeof(ib));


        printf("%s",ib);

See also

rsb_err_t rsb_mtx_get_nrm (const struct rsb_mtx_t * mtxAp, void * Np, enum rsb_extff_t flags)¶

Computes a matrix norm (either infinite-norm or or 2-norm or 1-norm).

Parameters

In case of a complex type, only the real part will be written to Np.

Returns

See also

rsb_err_t rsb_mtx_get_prec (void * opdp, const struct rsb_mtx_t * mtxAp, rsb_precf_t prec_flags, const void * ipdp)¶

A function computing a simple preconditioner out of mtxAp.

Parameters

Returns

Example:

        struct rsb_mtx_t *mtxAp = NULL; /* matrix structure pointer */


        struct rsb_mtx_t *mtxLUp [2];   /* matrix structure pointer */


        rsb_precf_t prec_flags = RSB_PRECF_ILU0;


        if((errval = rsb_lib_init(RSB_NULL_INIT_OPTIONS)) != 


                        RSB_ERR_NO_ERROR)


        {


                printf("Error initializing the library!0);


                goto err;


        }


        mtxAp = rsb_mtx_alloc_from_coo_const(


                VA,IA,JA,nnzA,typecode,nrA,ncA,brA,bcA,


                RSB_FLAG_DEFAULT_RSB_MATRIX_FLAGS /* force rsb */


                | RSB_FLAG_DUPLICATES_SUM /* sum dups */


                | RSB_FLAG_TRIANGULAR /* need triangle for spsv */


                , &errval);


        if((!mtxAp) || (errval != RSB_ERR_NO_ERROR))


        {


                printf("Error while allocating the matrix!0);


                goto err;


        }


        errval = rsb_mtx_get_prec(mtxLUp,mtxAp, prec_flags, NULL);


        if( errval != RSB_ERR_NO_ERROR )


        {


                printf("Error while calling rsb_mtx_get_prec!0);


                goto err;


        }


        // ...


        


        rsb_mtx_free(mtxLUp[0]);


        rsb_mtx_free(mtxLUp[1]);


        rsb_mtx_free(mtxAp );

Note

See also

rsb_err_t rsb_mtx_get_rows_sparse (rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, void * VA, rsb_coo_idx_t * IA, rsb_coo_idx_t * JA, rsb_coo_idx_t frA, rsb_coo_idx_t lrA, rsb_nnz_idx_t * rnzp, rsb_flags_t flags)¶

Writes to the given COO arrays the specified submatrix.

Invoke with VA,IA,JA set to NULL in order to get the nonzeroes count written to *rnzp, and know how large the arrays should be.

IA can be NULL (in this case it will be ignored). The written rows are ordered.

Parameters

Returns

Example snip:

   rsb_coo_idx_t    IA[] = { 0, 0, 0, 0 };


        rsb_coo_idx_t    JA[] = { 0, 0, 0, 0 };


        RSB_DEFAULT_TYPE VA[] = { -1, -1, -1, -1 };


        rsb_trans_t transA = RSB_TRANSPOSITION_N;


        const rsb_coo_idx_t frA = 2, lrA = 2;


        rsb_nnz_idx_t rnz;


        RSB_DEFAULT_TYPE *alphap = NULL;


        errval = rsb_mtx_get_rows_sparse(transA, NULL, mtxAp, NULL,


                 NULL, NULL, frA, lrA, &rnz, RSB_FLAG_NOFLAGS);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_mtx_get_rows_sparse!0);


                goto err;


        }


        printf("Rows between %d and %d have %d nnz0,


                (int)frA,(int)lrA,(int)rnz);


        errval = rsb_mtx_get_rows_sparse(transA, alphap, mtxAp,


                 VA, IA, JA, frA, lrA, &rnz, RSB_FLAG_NOFLAGS);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_mtx_get_vals!0);


                goto err;


        }

See also

rsb_err_t rsb_mtx_get_vals (const struct rsb_mtx_t * mtxAp, void * VA, const rsb_coo_idx_t * IA, const rsb_coo_idx_t * JA, rsb_nnz_idx_t nnz, rsb_flags_t flags)¶

Gets the specified matrix elements, if found. Please note that unlike rsb_mtx_set_vals, the matrix has to be fully assembled here.

Parameters

Returns

Example snip:

        const rsb_coo_idx_t    IA[] = { 2, 0, 2, 0 };


        const rsb_coo_idx_t    JA[] = { 2, 0, 0, 0 };


        RSB_DEFAULT_TYPE VA[] = { -1, -1, -1, -1 };


        errval = rsb_mtx_get_vals(mtxAp, VA, IA, JA, nnzA, RSB_FLAG_NOFLAGS);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_mtx_get_vals!0);


                goto err;


        }

See also

rsb_err_t rsb_mtx_get_vec (const struct rsb_mtx_t * mtxAp, void * Dp, enum rsb_extff_t flags)¶

Will overwrite a supplied array with a specific vector quantity.

Parameters

Returns

See also

rsb_err_t rsb_mtx_rndr (const char * filename, const struct rsb_mtx_t * mtxAp, rsb_coo_idx_t pmWidth, rsb_coo_idx_t pmHeight, rsb_marf_t rflags)¶

Renders a matrix to a file. Currently, only Encapsulated Postscript (EPS) is supported.

Parameters

Example rendering a sparse matrix to Postscript:

           if(RSB_ERR_NO_ERROR!=(errval =


                rsb_mtx_rndr("pd.eps",mtxAp,512,512,RSB_MARF_EPS_B)))


                        goto err;

Setting environment variable RSB_USE_HOSTNAME=0 prevents hostname being in the EPS plot internal comments.

See also

rsb_err_t rsb_mtx_set_vals (struct rsb_mtx_t * mtxAp, const void * VA, const rsb_coo_idx_t * IA, const rsb_coo_idx_t * JA, rsb_nnz_idx_t nnz, rsb_flags_t flags)¶

Updates the specified matrix elements, if found in the nonzero pattern.

In the special case of a matrix in assembly state (that is, one that has been created as empty with rsb_mtx_alloc_from_coo_begin() and not yet assembled with rsb_mtx_alloc_from_coo_end() ) all the supplied matrix elements will be accepted: whether already present or not.

Parameters

Returns

See also

rsb_err_t rsb_mtx_switch_to_coo (struct rsb_mtx_t * mtxAp, void ** VAp, rsb_coo_idx_t ** IAp, rsb_coo_idx_t ** JAp, rsb_flags_t flags)¶

Switches a matrix to COO arrays in place.

Parameters

Returns

Note

Warning

Example:

  rsb_coo_idx_t  *RP = NULL;


        rsb_coo_idx_t  *JA = NULL;


        RSB_DEFAULT_TYPE *VA = NULL;


        errval = rsb_mtx_switch_to_coo(mtxAp, (void**)&VA,


                &RP, &JA, RSB_FLAG_NOFLAGS);


        // NOTE: no rsb_mtx_free() necessary now..

See also

rsb_err_t rsb_mtx_switch_to_csr (struct rsb_mtx_t * mtxAp, void ** VAp, rsb_coo_idx_t ** IAp, rsb_coo_idx_t ** JAp, rsb_flags_t flags)¶

Switches the matrix to the CSR format, in-place.

Parameters

Returns

Note

Warning

Example:

  rsb_coo_idx_t  *IA = NULL;


        rsb_coo_idx_t  *JA = NULL;


        RSB_DEFAULT_TYPE *VA = NULL;


        errval = rsb_mtx_switch_to_csr(mtxAp, (void**)&VA,


                &IA, &JA, RSB_FLAG_NOFLAGS);


        // NOTE: no rsb_mtx_free() necessary now..

See also

rsb_err_t rsb_mtx_upd_vals (struct rsb_mtx_t * mtxAp, enum rsb_elopf_t elop_flags, const void * omegap)¶

$ A <- op (A,Omega) $ Updates the matrix $A$ by applying either a row-wise or an elemental operation $op$, which is determined by elop_flags. If an unary operation is selected, omegap can be NULL.

Parameters

Returns

Example snip:

        enum rsb_elopf_t elop_flags = RSB_ELOPF_NEG;


        const RSB_DEFAULT_TYPE omegap[] = {10};


        errval = rsb_mtx_upd_vals(mtxAp, elop_flags, NULL);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_mtx_upd_vals!0);


                goto err;


        }


        elop_flags = RSB_ELOPF_MUL;


        errval = rsb_mtx_upd_vals(mtxAp, elop_flags, omegap);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_mtx_upd_vals!0);


                goto err;


        }

See also

rsb_err_t rsb_perror (void * stream, rsb_err_t errval)¶

Prints out to the specified stream a string corresponding to the error code (using <stdio.h>'s fprintf). If stream==NULL, will print out to the default output stream; see RSB_IO_WANT_OUTPUT_STREAM .

Parameters

Returns

See also

rsb_trans_t rsb_psblas_trans_to_rsb_trans (const char psbtrans)¶

Translate a PSBLAS transposition value character to a librsb one.
See the PSBLAS library website/documentation for valid input values.

Parameters

Returns

Example snip:

See also

rsb_err_t rsb_spmm (rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void * Bp, rsb_nnz_idx_t ldB, const void * betap, void * Cp, rsb_nnz_idx_t ldC)¶

Updates a dense matrix with the product of sparse matrix by dense matrix; that is, computes $ C <- beta* C + alpha* opa(A) * B $.

$opa( A )=A$ if transA=RSB_TRANSPOSITION_N;
$opa( A )= A ^T$ if transA=RSB_TRANSPOSITION_T; $opa( A )= A ^H$ if transA=RSB_TRANSPOSITION_C; If --enable-rsb-num-threads has been specified at configure time, the RSB_NUM_THREADS environment variable will override the number of executing threads specified by OMP_NUM_THREADS. (See also RSB_IO_WANT_EXECUTING_THREADS). Setting order=RSB_FLAG_WANT_COLUMN_MAJOR_ORDER with ldC=0 and ldB=0 implies 'compact' defaults, that is no extra stride between the columns.

Parameters

Returns

Note

See also

struct rsb_mtx_t * rsb_spmsp (rsb_type_t typecode, rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_trans_t transB, const void * betap, const struct rsb_mtx_t * mtxBp, rsb_err_t * errvalp)¶

Computes the weighted product of two sparse matrices in a new sparse matrix (also known as SpGEMM operation): $C <- alpha * opa(A) * beta * opb(B) $ Symmetry/Hermitian flags are ignored by this operation.

$opa( A )=A$ if transA=RSB_TRANSPOSITION_N;
$opa( A )= A ^T$ if transA=RSB_TRANSPOSITION_T; $opa( A )= A ^H$ if transA=RSB_TRANSPOSITION_C; $opb( B )=B$ if transB=RSB_TRANSPOSITION_N;
$opb( B )= B ^T$ if transB=RSB_TRANSPOSITION_T; $opb( B )= B ^H$ if transB=RSB_TRANSPOSITION_C;

Parameters

Returns

Example snip:

  const rsb_trans_t transA = RSB_TRANSPOSITION_N;


        const rsb_trans_t transB = RSB_TRANSPOSITION_N;


        RSB_DEFAULT_TYPE *alphap = NULL;


        RSB_DEFAULT_TYPE *betap = NULL;


        struct rsb_mtx_t * mtxCp = NULL;


        mtxCp = rsb_spmsp(typecode, transA, alphap, mtxAp,


                 transB, betap, mtxAp, &errval);


        if( !mtxCp )


        {


                printf("Error calling rsb_spmsp!0);


                goto err;


        }       


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_spmsp!0);


                goto err;


        }

Warning

See also

rsb_err_t rsb_spmsp_to_dense (rsb_type_t typecode, rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_trans_t transB, const void * betap, const struct rsb_mtx_t * mtxBp, rsb_nnz_idx_t ldC, rsb_nnz_idx_t nrC, rsb_nnz_idx_t ncC, rsb_bool_t rowmajorC, void * Cp)¶

Computes the product of sparse matrices and adds it to a dense matrix: $C <- alpha opa(A) * beta * opb(B) $.

$opa( A )=A$ if transA=RSB_TRANSPOSITION_N;
$opa( A )= A ^T$ if transA=RSB_TRANSPOSITION_T; $opa( A )= A ^H$ if transA=RSB_TRANSPOSITION_C; $opb( B )=B$ if transB=RSB_TRANSPOSITION_N;
$opb( B )= B ^T$ if transB=RSB_TRANSPOSITION_T; $opb( B )= B ^H$ if transB=RSB_TRANSPOSITION_C;

Parameters

Returns

Warning

Example snip:

   const rsb_nnz_idx_t ldC = 4, nrC = 3, ncC = 3;


        const rsb_bool_t rowmajorC = RSB_BOOL_TRUE;


        RSB_DEFAULT_TYPE Cp[ /*ldC*nrC*/ ] = {


                0, 0, 0, -99,


                0, 0, 0, -99,


                0, 0, 0, -99


        };


        const rsb_trans_t transA = RSB_TRANSPOSITION_N;


        const rsb_trans_t transB = RSB_TRANSPOSITION_N;


        RSB_DEFAULT_TYPE *alphap = NULL;


        RSB_DEFAULT_TYPE *betap = NULL;


        errval = rsb_spmsp_to_dense(typecode, transA, alphap, mtxAp,


                 transB, betap, mtxAp , ldC, nrC, ncC, rowmajorC, Cp);


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_spmsp_to_dense!0);


                goto err;


        }

See also

rsb_err_t rsb_spmv (rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, const void * Xp, rsb_coo_idx_t incX, const void * betap, void * Yp, rsb_coo_idx_t incY)¶

Multiplies a sparse matrix $opa(A)$ by a vector $X$, updating vector $Y$.
Computes $Y <- beta Y + alpha * opa(A) * X $.
It is not allowed to supply same Xp and Yp (that is, Xp==Yp).
$opa( A )=A$ if transA=RSB_TRANSPOSITION_N;
$opa( A )= A ^T$ if transA=RSB_TRANSPOSITION_T; $opa( A )= A ^H$ if transA=RSB_TRANSPOSITION_C; If --enable-rsb-num-threads has been specified at configure time, the RSB_NUM_THREADS environment variable will override the number of executing threads specified by OMP_NUM_THREADS. (See also RSB_IO_WANT_EXECUTING_THREADS).

Parameters

Returns

Example snip:

    if((errval = 


                rsb_spmv(RSB_TRANSPOSITION_N,&one,mtxAp,B,1,&one,X,1))


                        != RSB_ERR_NO_ERROR )


        {


                printf("Error performing a multiplication!0);


                goto err;


        }

Note

See also

struct rsb_mtx_t * rsb_sppsp (rsb_type_t typecode, rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_trans_t transB, const void * betap, const struct rsb_mtx_t * mtxBp, rsb_err_t * errvalp)¶

Computes the weighted sum of two sparse matrices, returning a new matrix: $C <- alpha* transA(A) + beta* transB{B} $ Symmetry flags are ignored in this operation.

$opa( A )=A$ if transA=RSB_TRANSPOSITION_N;
$opa( A )= A ^T$ if transA=RSB_TRANSPOSITION_T; $opa( A )= A ^H$ if transA=RSB_TRANSPOSITION_C; $opb( B )=B$ if transB=RSB_TRANSPOSITION_N;
$opb( B )= B ^T$ if transB=RSB_TRANSPOSITION_T; $opb( B )= B ^H$ if transB=RSB_TRANSPOSITION_C;

Parameters

Returns

Example snip:

        const rsb_trans_t transA = RSB_TRANSPOSITION_N;


        const rsb_trans_t transB = RSB_TRANSPOSITION_N;


        RSB_DEFAULT_TYPE *alphap = NULL;


        RSB_DEFAULT_TYPE *betap = NULL;


        struct rsb_mtx_t * mtxCp = NULL;


        mtxCp = rsb_sppsp(typecode, transA, alphap, mtxAp,


                 transB, betap, mtxAp, &errval);


        if( !mtxCp )


        {


                printf("Error calling rsb_sppsp!0);


                goto err;


        }       


        if(errval != RSB_ERR_NO_ERROR )


        {


                printf("Error calling rsb_sppsp!0);


                goto err;


        }

See also

Warning

rsb_err_t rsb_spsm (rsb_trans_t transT, const void * alphap, const struct rsb_mtx_t * mtxTp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void * betap, const void * Bp, rsb_nnz_idx_t ldB, void * Cp, rsb_nnz_idx_t ldC)¶

Computes $Y <- alpha * opt( T )^{-1} * B $, with upper or lower triangular $T$.

$opt( T )=T$ if transT=RSB_TRANSPOSITION_N;
$opt( T )= T ^T$ if transT=RSB_TRANSPOSITION_T; $opt( T )= T ^H$ if transT=RSB_TRANSPOSITION_C;

Parameters

Returns

See also

rsb_err_t rsb_spsv (rsb_trans_t transT, const void * alphap, const struct rsb_mtx_t * mtxTp, const void * Xp, rsb_coo_idx_t incX, void * Yp, rsb_coo_idx_t incY)¶

Computes $Y <- alpha * opt( T )^{-1} * X $, with upper or lower triangular $T$. It is allowed to supply same Xp and Yp (that is, Xp==Yp).

$opt( T )=T$ if transT=RSB_TRANSPOSITION_N;
$opt( T )= T ^T$ if transT=RSB_TRANSPOSITION_T; $opt( T )= T ^H$ if transT=RSB_TRANSPOSITION_C;

Parameters

Returns

Example backsolving a triangular system:

       if((errval = rsb_spsv(RSB_TRANSPOSITION_N,&one,mtxAp,X,1,X,1))


                        != RSB_ERR_NO_ERROR )


        {


                printf("Error performing triangular solve!0);


                goto err;


        }

See also

rsb_err_t rsb_strerror_r (rsb_err_t errval, rsb_char_t * buf, size_t buflen)¶

Writes a textual description of an error code in the specified string buffer. No more than buflen characters will be written (comprehensive of the terminating NUL character). No action will be performed on RSB_ERR_NO_ERROR. Notice too that error flags cannot be added in the way flags are (e.g. (RSB_ERR_GENERIC_ERROR|RSB_ERR_BADARGS) evaluates to RSB_ERR_GENERIC_ERROR).

Parameters

Returns

Examples:

                    char errbuf[256];


                        rsb_strerror_r(errval,&errbuf[0],sizeof(errbuf));


                        printf("Failed setting the"


                        " RSB_IO_WANT_EXTRA_VERBOSE_INTERFACE"


                        " library option (reason string:0s).0,errbuf);

or

        rsb_err_t errval = RSB_ERR_INTERNAL_ERROR;


        // ...


        


        if(errval != RSB_ERR_NO_ERROR)


        {


                char errbuf[256];


                rsb_strerror_r(errval,&errbuf[0],sizeof(errbuf));


                // error handling ...

See also

rsb_time_t rsb_time (void)¶

Returns the current time in seconds. This function is meant to be used for computing wall clock time intervals (e.g.: for benchmarking purposes). The user should not rely on this function for absolute time computations.

Returns

See also

rsb_err_t rsb_tune_spmm (struct rsb_mtx_t ** mtxOpp, rsb_real_t * sfp, rsb_int_t * tnp, rsb_int_t maxr, rsb_time_t maxt, rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void * Bp, rsb_nnz_idx_t ldB, const void * betap, void * Cp, rsb_nnz_idx_t ldC)¶

An auto-tuner: optimizes either the matrix instance, the thread count or both for the rsb_spmm operation.

The tuner works by evaluating different instances and working threads variants. The instance leading to faster operation time will be retained and given back to the user in *mtxOpp. If nrhs==1 and order==RSB_FLAG_WANT_COLUMN_MAJOR_ORDER, unitary stride vectors are assumed. In case of error, the original input matrix shall be unaffected. It is possible to specify the leading dimensions of Bp,Cp implicitly, with ldB=0 and ldC=0: in this case, their values will be computed internally and if Bp!=NULL,Cp!=NULL, they will be assumed of being sufficiently sized. Values of nrhs<1 will be treated as 1. Bp, Cp can be NULL: temporary vectors will be allocated, used, and deallocated within the tuner. If mtxOpp=NULL and *tnp!=NULL the best thread count will be probed for the matrix given in mtxAp. Please note that if threads-only tuning is requested and matrix has too few leaves (see RSB_MIF_LEAVES_COUNT__TO__RSB_BLK_INDEX_T), tuning will not work. If mtxAp==NULL, then the *mtxOpp instance will be used; however in this case, if a better instance is found, the original will be destroyed as with rsb_mtx_free(). The case mtxAp!=NULL&&*mtxOpp!=NULL is illegal and will cause error code RSB_ERR_BADARGS to be returned.

Parameters

Returns

       Examples:

// obtain best thread count for mtxAp:
errval = rsb_tune_spmm(NULL  ,&sf,&tn ,maxr,maxt,transA,&alpha,mtxAp,nrhs,order,Bp,ldB,&beta,Cp,ldC);
// obtain best thread count for mtxAp; Bp and Cp will be allocated by the tuner:
errval = rsb_tune_spmm(NULL  ,&sf,&tn ,maxr,maxt,transA,&alpha,mtxAp,nrhs,order,NULL,0,&beta,NULL,0);
// obtain best clone of mtxAp (for current thread count):
assert(mtxOp == NULL && mtxAp != NULL);
errval = rsb_tune_spmm(&mtxOp,&sf,NULL,maxr,maxt,transA,&alpha,mtxAp,nrhs,order,Bp,ldB,&beta,Cp,ldC);
// obtain best clone of mtxAp and best thread count:
assert(mtxOp == NULL && mtxAp != NULL);
errval = rsb_tune_spmm(&mtxOp,&sf,&tn ,maxr,maxt,transA,&alpha,mtxAp,nrhs,order,Bp,ldB,&beta,Cp,ldC);
// replace mtxAp with best clone (if any):
errval = rsb_tune_spmm(&mtxAp,&sf,NULL,maxr,maxt,transA,&alpha,NULL ,nrhs,order,Bp,ldB,&beta,Cp,ldC);
// replace mtxAp with best clone (if any) and obtain best thread count:
errval = rsb_tune_spmm(&mtxAp,&sf,&tn ,maxr,maxt,transA,&alpha,NULL ,nrhs,order,Bp,ldB,&beta,Cp,ldC);
// illegal call:
assert(mtxOp != NULL && mtxAp != NULL);
errval = rsb_tune_spmm(&mtxOp,&sf,&tn ,maxr,maxt,transA,&alpha,mtxAp,nrhs,order,Bp,ldB,&beta,Cp,ldC);

Warning

Todo

Sample matrix sparse block structure before tuning
Sample matrix sparse block structure after tuning
See also

rsb_err_t rsb_tune_spsm (struct rsb_mtx_t ** mtxOpp, rsb_real_t * sfp, rsb_int_t * tnp, rsb_int_t maxr, rsb_time_t maxt, rsb_trans_t transA, const void * alphap, const struct rsb_mtx_t * mtxAp, rsb_coo_idx_t nrhs, rsb_flags_t order, const void * Bp, rsb_nnz_idx_t ldB, const void * betap, void * Cp, rsb_nnz_idx_t ldC)¶

An auto-tuner: optimizes either the matrix instance, the thread count or both for the rsb_spsm operation.

The tuner works by evaluating different instances and working threads variants. The instance leading to faster operation time will be retained and given back to the user in *mtxOpp. If nrhs==1 and order==RSB_FLAG_WANT_COLUMN_MAJOR_ORDER, unitary stride vectors are assumed. In case of error, the original input matrix shall be unaffected. It is possible to specify the leading dimensions of Bp,Cp implicitly, with ldB=0 and ldC=0: in this case, their values will be computed internally and if Bp!=NULL,Cp!=NULL, they will be assumed of being sufficiently sized. Values of nrhs<1 will be treated as 1. Bp, Cp can be NULL: temporary vectors will be allocated, used, and deallocated within the tuner. If mtxOpp=NULL and *tnp!=NULL the best thread count will be probed for the matrix given in mtxAp. Please note that if threads-only tuning is requested and matrix has too few leaves (see RSB_MIF_LEAVES_COUNT__TO__RSB_BLK_INDEX_T), tuning will not work. If mtxAp==NULL, then the *mtxOpp instance will be used; however in this case, if a better instance is found, the original will be destroyed as with rsb_mtx_free(). The case mtxAp!=NULL&&*mtxOpp!=NULL is illegal and will cause error code RSB_ERR_BADARGS to be returned.

Parameters

Returns

If --enable-zero-division-checks-on-solve was specified at configure time, attempts to solve a triangular matrix with zeroes on a diagonal will fail.

Warning

Todo

Sample matrix sparse block structure before tuning
Sample matrix sparse block structure after tuning
See also