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Subject: [OMPI users] Memory corruption?
From: Roy Dragseth (roy.dragseth_at_[hidden])
Date: 2009-12-22 07:10:03


We have started to scale up one of our codes and sometimes we get messages
like this:

[c9-13.local:31125] Memory 0x2aaab7b64000:217088 cannot be freed from
the registration cache. Possible memory corruption.

It seems like the application runs normally and it does not crash becaus of
this. Should we be worried? We have tested the code with up to 1700 cores
and the message becomes more frequent as we scale up.

System details:

Rocks 5.2 (aka CentOS 5.3) x86_64
INTEL Compiler 11.1
OFED 1.4.1
OpenMPI 1.3.3

Best regards and Merry Christmas to all,

  The Computer Center, University of Tromsø, N-9037 TROMSØ Norway.
	      phone:+47 77 64 41 07, fax:+47 77 64 41 00
        Roy Dragseth, Team Leader, High Performance Computing
	 Direct call: +47 77 64 62 56. email: roy.dragseth_at_[hidden]