IMB-MPI1 pingpong job hangs for minutes when using dapl

[Hui_L_]

Hello,

I was running the IMB-MPI pingpong job by using following scripts:

mpirun -hosts node1,node2 -ppn 1 -n 2 -env I_MPI_FABRICS=dapl -env I_MPI_DAPL_PROVIDER=ofa-v2-mlx5_0-1s -env I_MPI_DEBUG=100 -env I_MPI_DYNAMIC_CONNECTION=0 IMB-MPI1 pingpong

the debug info is as follows:

could you please give some suggestions how to fix this problem. thanks in advance.

[Carlos_R_Intel]

Hi,

Can you share what version of Intel MPI and of the benchmarks you are using? It would also be useful to have the output of the command "ibv_devinfo" in verbose mode, and to know if you can ssh across those two nodes without issues outside of this tests.

Regards,

Carlos