mvapich and mvapich2 in Red Hat Enterprise Linux 5 are compiled to support only InfiniBand/iWARP interconnects. Consequently, they will not run over ethernet or other network interconnects. (BZ#466390)
cannot open `/tmp/openmpi-upgrade-version.*' for reading: No such file or directoryThe message is harmless and can be safely ignored. (BZ#463919)
openmpi and lam may prevent you from upgrading these packages. This bug manifests in the following error (when attempting to upgrade openmpi or lam:
error: %preun(openmpi-[version]) scriptlet failed, exit status 2
openmpi and lam in order to install their latest versions. To do so, use the following rpm command:
rpm -qa | grep '^openmpi-\|^lam-' | xargs rpm -e --noscripts --allmatches (BZ#433841)