[libfabric-users] Race in GNI provider?

Thomas Heller thom.heller at gmail.com
Wed Mar 22 14:03:52 PDT 2017


Hi List,

I am currently looking into some of the issues related to our new libfabric 
message layer that John initially wrote. I am running into segmentation fault
out of libfabric with a backtrace like this:
https://gist.github.com/sithhell/72092260662a5ffe64e2e682543fe166
Other threads have backtraces calling into that function and spinning on 
locks, for example here:
https://gist.github.com/sithhell/cc18f4cd2ef6f35c279b99bc78b3623e

Does this ring a bell for anyone? It doesn't happen when using just one 
thread...
I am using the latest HEAD from here:
https://github.com/ofi-cray/libfabric-cray
Commit: 001186332f19a37e60da2dd41f4baab5972e145e

Any help is appreciated!

Thanks,
Thomas



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