Hide Forgot
mpicc didn't work and a small amount of googling told me to run "module load openmpi-i386". But I didn't have a "module" command on my system. Took me quite some time to sort this out, but eventually realized that was something else I had to install. I found this: http://fedoraproject.org/wiki/PackagingDrafts/EnvironmentModules which says: "Packaging note When creating RPMs containing module files, be sure to Requires: environment-modules for directory ownership and usability." So looks like a bug to me since I had openmpi installed but not environment-modules.
Looks like this has been fixed already. $ rpm -q openmpi openmpi-1.5-3.fc15.x86_64 $ rpm -q --requires openmpi|grep enviro environment-modules