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PMIX_INFO_REQUIRED(3) OpenPMIx PMIX_INFO_REQUIRED(3)

PMIx_Info_required — Mark a pmix_info_t(5) <#man5-pmix-info-t> as required

SYNOPSIS

#include <pmix.h>
void PMIx_Info_required(pmix_info_t *p);


Python Syntax

No Python equivalent

INPUT PARAMETERS

•
p: Pointer to the pmix_info_t(5) <#man5-pmix-info-t> structure to be marked required.

DESCRIPTION

The PMIx_Info_required function sets the PMIX_INFO_REQD directive bit in the info structure’s flags field. Marking an info required tells the PMIx implementation (and the host environment) that the directive it carries must be honored: a request that cannot satisfy a required directive should fail rather than silently ignore it.

This is the inverse of PMIx_Info_optional(3) <#man3-pmix-info-optional>, which clears the same bit. Whether an info is currently marked required can be tested with PMIx_Info_is_required(3) <#man3-pmix-info-is-required>.

RETURN VALUE

PMIx_Info_required returns no value (void).

NOTES

PMIx_Info_required is the OpenPMIx routine underlying the historical PMIX_INFO_REQUIRED macro. That macro is retained in pmix_deprecated.h for backward compatibility and simply expands to a call to this function.

See also:

PMIx_Info_optional(3) <#man3-pmix-info-optional>, PMIx_Info_is_required(3) <#man3-pmix-info-is-required>, PMIx_Info_is_optional(3) <#man3-pmix-info-is-optional>, pmix_info_t(5) <#man5-pmix-info-t>


Copyright

2014-2026, OpenPMIx Community

September 27, 2026