[gmx-users] segmentation fault from power6 kernel

Fabio Affinito f.affinito at cineca.it
Thu Nov 3 09:59:32 CET 2011

Thank you, Mark.
Using GMX_NOOPTIMIZEDKERNELS=1 everything runs fine on power6.
I also tried to run on a linux cluster and it went ok.


> The most likely issue is some normal "blowing up" scenario leading to a
> table-lookup-overrun segfault in the 3xx series kernels. I don't know
> why the usual error messages in such scenarios did not arise on this
> platform. Try setting the environment variable GMX_NOOPTIMIZEDKERNELS to
> 1 to see if this is a power6-specific kernel issue. Try running the .tpr
> on another platform.
> Mark

Fabio Affinito, PhD
SuperComputing Applications and Innovation Department
CINECA - via Magnanelli, 6/3, 40033 Casalecchio di Reno (Bologna) - ITALY
Tel: +39 051 6171794  Fax: +39 051 6132198

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