PMI_Allgather

PMI_Allgather - Performs an *allgather* across the specified process group

SYNOPSIS

C or C++ SYNOPSIS

#include <pmi.h>
int PMI_Allgather(void *in, void *out, int len);

IMPLEMENTATION

Cray Linux Environment (CLE)

DESCRIPTION

This function is a collective call across all processes in the process group that the local process belongs to. It will not return until all the processes have called PMI_Allgather(). The data coalesced through the output buffer will not necessarily be in rank order. The return value is not guaranteed to be the same across all ranks in the job.

in

Pointer to the beginning of the input buffer.

out

Pointer to the beginning of the output buffer.

len

number of bytes to be gathered from each process in the group.

RETURN VALUES

PMI_SUCCESS

Operation completed successfully

PMI_FAIL

Operation failed

PMI_ERR_INIT

PMI not initialized

PMI_ERR_RANK_FAIL_STOP

One or more ranks in the job is in a fail stop state