On Mar 9, 2012, at 5:17 PM, Jeremiah Willcock wrote:
> On Open MPI 1.5.1, when I call MPI_Testsome with incount=0 and the two output arrays NULL, I get an argument error (MPI_ERR_ARG). Is this the intended behavior? If incount=0, no requests can complete, so the output arrays can never be written to. I do not see anything in the MPI 2.2 standard that says either way whether this is allowed.
I have no strong opinions here, so I coded up a patch to just return MPI_SUCCESS in this scenario (attached).
If no one objects, we can probably get this in 1.6.
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