[mpich-discuss] MPI_Win_fence memory consumption

[Rajeev Thakur]

Does that happen only with Nemesis or even with ch3:sock?

Rajeev 

> -----Original Message-----
> From: mpich-discuss-bounces at mcs.anl.gov 
> [mailto:mpich-discuss-bounces at mcs.anl.gov] On Behalf Of Dorian Krause
> Sent: Friday, February 27, 2009 7:16 AM
> To: mpich-discuss at mcs.anl.gov
> Subject: [mpich-discuss] MPI_Win_fence memory consumption
> 
> Hi List,
> 
> the attached test program uses MPI_Accumulate/MPI_Win_fence for one 
> sided communication with derived datatype.
> The program runs fine with mpich2-1.1a2 except for my 
> debugging version 
> of MPICH2 compiled with
> 
> ./configure --with-device=ch3:nemesis --enable-g=dbg,mem,meminit
> 
> In this case the MPI_Win_fence on the target side comuses 
> about 90% of 
> main memory (e.g. > 3 GB). As the behaviour is completely
> different for predefined datatypes, I suspect that the memory 
> consumption is related to the construction of the
> derived datatype on the target side.
> 
> Is there a workaround for this?
> 
> Thanks + Best regards,
> Dorian
> 
> 
> 
> 
>