n of UCX in
> this machine does not work for some reason. Is there an easy way to check if
> UCX works well before installing Open MPI?
>
>Jose
>
>
>
>> El 3 feb 2022, a las 16:38, Pritchard Jr., Howard
>> escribió:
>>
>> Hello Jose,
run the test in a shell with
>
> export OMPI_MCA_btl_base_verbose=100
>
> there may be some more info to help diagnose what's going on.
>
> Another option would be to build Open MPI with UCX support. That's the
> better way to use Open MPI over IB/RoCE.
>
Hi.
I am using Open MPI 4.1.1 with the openib BTL on a 4-node cluster with Ethernet
10/25Gb (RoCE). It is using libibverbs from Ubuntu 18.04 (kernel
4.15.0-166-generic).
With this hello world example:
#include
#include
int main (int argc, char *argv[])
{
int rank, size, provided;
MPI_Init_
