[OMPI users] open mpi and MLX

I am having a trouble running simple benchmarks like osu bidirectional bandwidth tests with recent OMPI (> version 1.8.1)over MLX. All versions including 1.8.1 seem to work. The issue is that FDR will hang frequently and will complain about physical memory available for user run is very low. The

[OMPI users] netloc

I have installed the up to date hwloc, jasson, netloc versions on IB cluster. I generated the lstopo xml files for a number of nodes. When I executed: netloc_ib_gather_raw --out-dir ib-raw --hwloc-dir hwloc --sudo Found 0 subnets in hwloc directory: I searched the forum and someone had similar i

Re: [OMPI users] collective algorithms

Cheers, Gilles On 2014/11/18 12:53, Faraj, Daniel A wrote: I am trying to survey the collective algorithms in Open MPI. I looked at the src code but could not make out the guts of the communication algorithms. There are some open mpi papers but not detailed, where they talk about what

[OMPI users] collective algorithms

I am trying to survey the collective algorithms in Open MPI. I looked at the src code but could not make out the guts of the communication algorithms. There are some open mpi papers but not detailed, where they talk about what algorithms are using in certain collectives. Has anybody done this sor