Yes, this is the case for Open MPI 4.x and earlier, due to various bugs. When Open MPI 5.0 ships, we will resolve this issue.
Brian On 9/9/22, 9:58 PM, "users on behalf of mrlong336 via users" <users-boun...@lists.open-mpi.org<mailto:users-boun...@lists.open-mpi.org> on behalf of users@lists.open-mpi.org<mailto:users@lists.open-mpi.org>> wrote: CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you can confirm the sender and know the content is safe. mpirun reports the following error: The OSC pt2pt component does not support MPI_THREAD_MULTIPLE in this release. Workarounds are to run on a single node, or to use a system with an RDMA capable network such as Infiniband. Does this error mean that the network must support RDMA if it wants to run distributed? Will Gigabit/10 Gigabit Ethernet work? Best regards, Timesir mrlong...@gmail.com<mailto:mrlong...@gmail.com>
