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Subject: [OMPI devel] memory bind warning with -bind-to-core and -bind-to-socket
From: Rolf vandeVaart (rvandevaart_at_[hidden])
Date: 2012-03-14 10:06:44


I am running a simple test and using the -bind-to-core or -bind-to-socket options. I think the CPU binding is working fine, but I see these warnings about not being able to bind to memory. Is this expected? This is trunk code (266128)

[dt]$ mpirun --report-bindings -np 2 -bind-to-core connectivity_c
--------------------------------------------------------------------------
WARNING: a request was made to bind a process. While the system supports binding the process itself, at least one node does NOT support binding memory to the process location.

  Node: dt

This is a warning only; your job will continue, though performance may be degraded.
--------------------------------------------------------------------------
[dt:03600] [[52612,0],0] odls:default binding child [[52612,1],1] to cpus 1,5
[dt:03600] [[52612,0],0] odls:default binding child [[52612,1],0] to cpus 0,4
[dt:03601] [[52612,1],0] is bound to cpus 0,4
[dt:03602] [[52612,1],1] is bound to cpus 1,5
Connectivity test on 2 processes PASSED.

I see this on two different clusters.

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