I see. Also, I wanted to build OpenMPI because the provided OpenMPI didn't have Java binding. It seems at this point the only option is to use TCP in CCM in BigRed 2 and if I remember correctly Mason and Quarry don't have IB as well, correct?
Thank you, Saliya On Wed, Apr 16, 2014 at 5:01 PM, Ray Sheppard <rshep...@iu.edu> wrote: > Hello, > Big Red 2 provides its own MPICH based MPI. The only case where the > provided OpenMPI module becomes relevant is when you create a CCMLogin > instance in Cluster Compatibility Mode (CCM). For most practical uses, > those sorts of needs are better addressed on the Quarry or Mason machines. > When in CCM, the Gemini network is not directly accessible. The > proposed idea is for middleware to present an interface resembling an IB > interface and use it to create a subset of the Gemini network for the CCM > virtual cluster. Unfortunately, due to a Cray bug, case 80503, that has > not yet worked. > Ray > > > On 4/16/2014 4:44 PM, Saliya Ekanayake wrote: > > Hi, > > We have a Cray XE6/XK7 supercomputer (BigRed II) and I was trying to get > OpenMPI Java binding working on it. I couldn't find a way to utilize its > Gemini interconnect, instead was running on TCP, which is inefficient. > > I see some work has been done along these lines in [1] and wonder if you > could give some suggestions on how to build OpenMPI with Gemini support. > > [1] > https://www.open-mpi.org/papers/cug-2012/cug_2012_open_mpi_for_cray_xe_xk.pdf > > Thank you, > Saliya > > -- > Saliya Ekanayake esal...@gmail.com > http://saliya.org > > > _______________________________________________ > users mailing > listusers@open-mpi.orghttp://www.open-mpi.org/mailman/listinfo.cgi/users > > > > _______________________________________________ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users > -- Saliya Ekanayake esal...@gmail.com Cell 812-391-4914 Home 812-961-6383 http://saliya.org
