Patrick, what is the error when no environment variable is set?
can you double check you do not have an old mca_pml_ucx.so in your /......../GCC9.3/openmpi/4.0.3/lib/openmpi directory? Cheers, Gilles On Sun, May 10, 2020 at 4:43 PM Patrick Bégou via users <users@lists.open-mpi.org> wrote: > > Hi all, > > I've built OpenMPI 4.3.0 with GCC 9.3.0 but on the server ucx was not > available when I set --with-ucx. I remove this option and it compiles fine > without ucx. However I have a strange behavior as when using mpirun I must > explicitely remove ucx to avoid an error: in my module file I have to set > > setenv OMPI_MCA_pml ^ucx > setenv OMPI_MCA_btl_openib_allow_ib 1 > > Is this the normal behavior or a small bug when ucx is not used ? I saw a > discussion about this but it was before OpenMPI 4.2.0 release. > > Patrick > > From ompi_info: > > Configure command line: '--with-lustre' '--with-slurm' '--with-hwloc' > '--enable-mpirun-prefix-by-default' '--prefix=/......../GCC9.3/openmpi/4.0.3' > '--with-pmi' '--enable-mpi1-compatibility' > .... > MCA btl: openib (MCA v2.1.0, API v3.1.0, Component v4.0.3) > MCA btl: tcp (MCA v2.1.0, API v3.1.0, Component v4.0.3) > MCA btl: vader (MCA v2.1.0, API v3.1.0, Component v4.0.3) > MCA btl: self (MCA v2.1.0, API v3.1.0, Component v4.0.3) >
