[mvapich-discuss] Runtime warning - Error in initializing MVAPICH2 ptmalloc library

[Nenad Vukicevic]

We are running mvapich 2.2b on Fedora 23. We are getting the following
warning when running the code:

WARNING: Error in initializing MVAPICH2 ptmalloc library.Continuing without
InfiniBand registration cache support.

I saw some previous discussions on the subject but none of the suggested
solutions worked (there was a patch on 2.1a(?), plus LD_PRELAOD of mpich
library, etc..).

This error shows up on a simple hello test but only if we run on multiple
nodes.  I can run multiple threads on the same node without causing this
warning.

Any idea what we can try?  I understand that there will be a slight
decrease in performance if we disable ptmalloc.

-- 
Nenad
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