topic Re: Intel MPI multinode jobs running problems in Intel® MPI Library

Intel MPI multinode jobs running problems

Jenya — Thu, 14 Dec 2023 08:13:40 GMT

Hello,

I have a four-node cluster connected by infiniband switch. I have a common NFS home directory for each node. The startup sequence for each node (bashrc, etc.) is thus identical. Let's call the nodes, node1, node2, and node3. I have disabled the firewalls on each server (which are running OS version of Rocky 8.7).
We have a PBS PRO (pbs_version = 2022.1.4.20231010124201
) queuing system and when we run jobs on a single node everything works fine, but when we try to run jobs in multinode mode we get the following errors:
check_exit_codes (../../../../../src/pm/i_hydra/libhydra/demux/hydra_demux_poll.c:117): unable to run bstrap_proxy on node1
poll_for_event (../../../../../src/pm/i_hydra/libhydra/demux/hydra_demux_poll.c:159): check exit codes error
HYD_dmx_poll_wait_for_proxy_event (../../../../../src/pm/i_hydra/libhydra/demux/hydra_demux_poll.c:212): poll for event error
HYD_bstrap_setup (../../../../../src/pm/i_hydra/libhydra/bstrap/src/intel/i_hydra_bstrap.c:1065): error waiting for event
HYD_print_bstrap_setup_error_message (../../../../../src/pm/i_hydra/mpiexec/intel/i_mpiexec.c:1026): error setting up the bootstrap proxies

Also in cluster Intel® oneAPI HPC Toolkit 2023 installed.

I would be happy to provide additional information if needed.

Re: Intel MPI multinode jobs running problems

VeenaJ_Intel — Mon, 18 Dec 2023 10:46:45 GMT

Hi,

Thanks for posting in Intel communities!

Can you please try setting up the following Environment variable:

export I_MPI_HYDRA_IFACE="ib0"

After implementing this change, kindly execute the process in a multinode environment and share the results with us.

Additionally, we kindly request the following details for further investigation:

Reproducer code.
Recreation steps.
Interconnect hardware details.
FI_PROVIDER information.
Logs generated after running the Intel® MPI Benchmark (IMB) with the same number of nodes as in the case where the issue occurred.

We thank you in advance for your cooperation.

Regards,

Veena

Re: Intel MPI multinode jobs running problems

Jenya — Wed, 20 Dec 2023 07:58:47 GMT

Hi Veena,

We are going to check what you wrote earlier and provide you with the results.

BR,

Jenya.

Re:Intel MPI multinode jobs running problems

TobiasK — Mon, 22 Jan 2024 09:13:17 GMT

@Jenya

in case you still have problems, please open a new thread.