[1] http://www.open-mpi.org/faq/?category=openfabrics#ib-low-reg-mem [2] http://www.open-mpi.org/community/lists/users/2011/09/17222.php
-- Bharath
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I am trying to find the correct setting for log_num_mtt and
log_mtt_per_seg should be for our cluster. Each node has 64G of RAM. We
are having issues when running MPI applications, the error is related to
registering memory. The current setting log_num_mtt=24 and
log_mtt_per_seg=1. There are lot of conflicting documentations available
with regards how these settings should be changed. I was wondering if
the community could explain how these settings works so that we can come
up with the correct settings that will work in our environment. This
document [1] specifically says that log_mtt_per_seg should always be 1.
However, OpenMPI mailing list post [2] talks about different value. Any
help on this is appreciated. I am not subscribed to the list so would
really appreciate if I am copied in the replies.
- Question on mlx4 log_num_mtt and log_mtt_per_seg setting Bharath Ramesh
