[mpich-discuss] Slow spawning on Window Server 2012

Wesley Bland wbland at mcs.anl.gov
Mon Aug 19 13:52:33 CDT 2013

Unfortunately, we haven't supported Windows since MPICH version 1.4.1p1. You can find out more at the FAQ page: http://wiki.mpich.org/mpich/index.php/Frequently_Asked_Questions#Q:_Why_can.27t_I_build_MPICH_on_Windows_anymore.3F

Since we don't have any test environments or Windows experts, we can't really shed any light onto why you would get this performance. You might try MS-MPI as mentioned in the FAQ post.


On Aug 19, 2013, at 12:44 PM, Abhishek Kumar Pandey <akpandey at adobe.com> wrote:

> Hi,
> I am using mpich-1.4.1.p1 to launch multiple child processes. On Window Server 2008 all the child processes are launched almost immediately but this takes significant time on Window Server 2012. 
> I am using MPI_Comm_spawn for spawning a process and MPI::Init_thread(argc,argv,MPI_THREAD_MULTIPLE) is used for initializing MPICH2.
> Please let me know if this is a known problem. Is there any workaround ? 
> Regards,
> Abhishek 
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