ENOSUPP invalid attribute

handle opaque handle for device, obtained through PAPI_enum_dev_type
attr device type attribute to query
val value of the requested device type attribute

typedef enum {


    PAPI_DEV_TYPE_ATTR__INT_PAPI_ID,    // PAPI defined device type id


    PAPI_DEV_TYPE_ATTR__INT_VENDOR_ID,  // Vendor defined id


    PAPI_DEV_TYPE_ATTR__CHAR_NAME,      // Vendor name


    PAPI_DEV_TYPE_ATTR__INT_COUNT,      // Devices of that type and vendor


    PAPI_DEV_TYPE_ATTR__CHAR_STATUS,    // Status string for the device type
} PAPI_dev_type_attr_e;
typedef enum {


    PAPI_DEV_TYPE_ID__CPU,   // Device id for CPUs


    PAPI_DEV_TYPE_ID__CUDA,  // Device id for Nvidia GPUs


    PAPI_DEV_TYPE_ID__ROCM,  // Device id for AMD GPUs
} PAPI_dev_type_id_e;
void *handle;
int id;
int enum_modifier = PAPI_DEV_TYPE_ENUM__ALL;
while (PAPI_OK == PAPI_enum_dev_type(enum_modifier, &handle)) {


    PAPI_get_dev_type_attr(handle, PAPI_DEV_TYPE_ATTR__INT_PAPI_ID, &id);


    switch (id) {


        case PAPI_DEV_TYPE_ID__CPU:


            // query cpu attributes


            break;


        case PAPI_DEV_TYPE_ID__CUDA:


            // query nvidia gpu attributes


            break;


        case PAPI_DEV_TYPE_ID__ROCM:


            // query amd gpu attributes


            break;


        default: ...


    }
}

PAPI_get_dev_type_attr() allows the user to query all device type attributes. It takes a device type handle, returned by PAPI_enum_dev_type, and an attribute to be queried for the device type and returns the attribute value.

PAPI_enum_dev_type

PAPI_get_dev_attr