I'm performing some tests with OMPIv4. The initial configuration used one
Ethernet port (10 Gibps) but have added a second one (with the same
characteristics). The documentation mentions that the OMPI installation will
try to use as much network capacity as available. However, my tests show no
gain in performance when adding the second port. I was wondering if there is
any way to tell the wrapper to use both ports. I was thinking of using the
flag 'btl_tcp_if_include' but I'm unsure if it can take two inputs. Could I
use something like

-mpirun --mca btl_tcp_if_include eno1,eno2d1 -np 128 ...? 

If not, any recommendation on how to proceed?

Thank you,





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