[mvapich-discuss] OSU 4.2 OpenSHMEM micro-benchmark: reduce latency test inconsistency

[Sayan Ghosh]

The OSU 4.2 OpenSHMEM micro-benchmark for testing reduce latency has a
minor inconsistency, for which the code fails (on SGI systems) with the
following:

LIBSMA ERROR:   The "pWrk" argument passed to _shmem_float_sum_to_all
                or shmem_real4_sum_to_all_
                is not a symmetric data object.  See the intro_shmem(3)
                man page for a list of symmetric data objects.

pWrkF1|2 in osu_oshm_reduce.c should be either global or have symmetric
allocation.

...
float *pWrkF1 = malloc(MAX(nreduce/2+1, _SHMEM_REDUCE_MIN_WRKDATA_SIZE));
float *pWrkF2 = malloc(MAX(nreduce/2+1, _SHMEM_REDUCE_MIN_WRKDATA_SIZE));
...
if(i%2)
   shmem_float_sum_to_all(recvbuf, sendbuf, size, 0, 0, numprocs, pWrkF1,
pSyncRed1);
else
   shmem_float_sum_to_all(recvbuf, sendbuf, size, 0, 0, numprocs, pWrkF2,
pSyncRed2);
...

>From OpenSHMEM reference manual: pWrk A symmetric work array.

-- 
Regards,
Sayan
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