Hello,
While working in a HPC support role, I was asked to resolve an apparent
discrepancy between OpenMPI 'mpi_cart_rank' behavior and the MPI spec [1,
2] that says "[out]-of-range coordinates are erroneous for non-periodic
dimensions." The observed behavior in our environment [3] was that
mpi_ca
Hi Eli,
I agree with you, keep the checks enabled, and users that want them off can
do it via our MCA parameters (command line or
${HOME}/.openmpi/mca-params.conf).
I don't think it is ever effective to try to save a few branches in MPI
functions that usually cost over a microsecond, and lose all
