[mpich-devel] MPIR_ERRTEST_ARGNULL and count=0 (or type_size=0)
james.dinan at gmail.com
Thu May 30 04:53:36 CDT 2013
Ugh, deep shame upon me and whoever reviewed my patch! Lisandro is
For accumulate ops, the op can also cause a buffer to be ignored (e.g.
GACC/FOP with NO_OP). I think there is code to handle this, but keep an
eye out for it.
On 05/29/2013 03:08 PM, Lisandro Dalcin wrote:
> On 29 May 2013 22:49, Jeff Hammond <jhammond at alcf.anl.gov> wrote:
>> It seems that I didn't understand MPI_BOTTOM completely, so the error
>> checks needed to be different than described below, but the high-level
>> issues are the same.
>> Interested parties may consult
>> http://trac.mpich.org/projects/mpich/ticket/1863 for details and
>> further discussion.
> Please take a look at the macro MPIR_ERRTEST_USERBUFFER .
> Lisandro Dalcin
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