[mpich-devel] MPIR_ERRTEST_ARGNULL and count=0 (or type_size=0)

[Jim Dinan]

Ugh, deep shame upon me and whoever reviewed my patch!  Lisandro is
correct.  :)

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.

 ~Jim.

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
> ---------------
> CIMEC (INTEC/CONICET-UNL)
> Predio CONICET-Santa Fe
> Colectora RN 168 Km 472, Paraje El Pozo
> 3000 Santa Fe, Argentina
> Tel: +54-342-4511594 (ext 1011)
> Tel/Fax: +54-342-4511169
>