You probably will also want to run with -mca pml ob1 to make sure mxm is not in use. The combination should be sufficient to force tcp usage.
-Nathan > On Jul 18, 2016, at 10:50 PM, Saliya Ekanayake <esal...@gmail.com> wrote: > > Hi, > > I read in a previous thread > (https://www.open-mpi.org/community/lists/users/2014/05/24475.php) that Jeff > mentions it's possible for OpenMPI to pick up the openib transport if tcp is > not requested explicitly. > > So, does that mean if I do, > > --mca btl ^openib > > that it's still possible for OpenMPI to use Infiniband and not TCP? > > Is there a way to guarantee that a test is using TCP, but not IB? > > Thank you, > saliya > > -- > Saliya Ekanayake > Ph.D. Candidate | Research Assistant > School of Informatics and Computing | Digital Science Center > Indiana University, Bloomington > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: https://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2016/07/29682.php
