[mvapich-discuss] Application failing when run with more than 64 processors

[Dmitri Gribenko]

On Thu, Apr 18, 2013 at 1:44 PM, Wesley Emeneker
<Wesley.Emeneker at oit.gatech.edu> wrote:
> Dear MVAPICH devs,
>   I have an application that fails when more than 64 processors are assigned
> to the job.
> I can split the job between multiple nodes and it will run as long as I
> don't use more than 64 cores.

I can reproduce this with Clang 3.2, but not with GCC 4.7.2.  The
program that fails for me is just trivial MPI_Init()/MPI_Finalize().

Dmitri

--
main(i,j){for(i=2;;i++){for(j=2;j<i;j++){if(!(i%j)){j=0;break;}}if
(j){printf("%d\n",i);}}} /*Dmitri Gribenko <gribozavr at gmail.com>*/