I successfully compiled and installed openmpi 1.2.2 SVN r14613 on a SLES 10 2.6.16 Linux kernel with gcc 4.1.0 (x86_64).
I can run the Intel MPI benchmarks OK at np=2 but at np=4, it hangs. If I change /usr/share/openmpi/mca-btl-openib-hca-params.ini [QLogic InfiniPath] use_eager_rdma = 0 Then, it gets much farther before hanging on 2MB+ messages. If I create .openmpi/mca-params.conf with min_rdma_size = 2147483648 The benchmark completes reliably. When the hang happens, the ipath driver thinks all the posted work requests and completion entries have been generated and openmpi seems to think they haven't all completed. Can someone point me to the code where RDMA write is polled on the destination node?
