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Subject: [OMPI devel] locked memory consumption with openib and spawn
From: Eugene Loh (eugene.loh_at_[hidden])
Date: 2012-02-27 22:24:01


In the test suite, we have an ibm/dynamic/loop_spawn test that looks
like this:

     for (...) {
         loop_spawn spawns loop_child
         parent and child execute MPI_Intercomm_merge
         parent and child execute MPI_Comm_free
         parent and child execute MPI_Comm_disconnect
     }

If the openib BTL is involved and you run long enough, it appears that
you run out of locked memory. Does anyone have a sense for whether that
is expected or it shows a resource leak?