Thanks for the reply. > The test code looks ok to me.
Ok! > I will mention that Open MPI 1.4.3 is *very* old; it is now 2 generations > behind the current. The current stable release is 1.6.5, and the current > feature series (1.7.x) is likely to transition to stable (1.8.x) in a few > months. I don't follow Ubuntu at all, but I guess I'm a bit surprised that > a) they're so far out of date, and b) they don't even have the last release > of the Open MPI 1.4.x series (which was 1.4.5, released Feb 14, 2012). I'm surprised too, Ubuntu 12.04 is a "Long Term Support" version, supported until 2017 [1], but the most recent OpenMPI version in the official repository is 1.4.3 [2]. > So yes, it could be a bug in Open MPI -- it's really hard to say with a > version that old. I would say that the first step is upgrading to at least > Open MPI 1.4.5 -- 1.6.5, if possible. Ok, so I think we will install 1.6.5 from sources. I just hope 1.4.3 was not really highlighting a bug in our code! Thanks for your help, David [1] https://wiki.ubuntu.com/LTS [2] https://launchpad.net/ubuntu/precise/+source/openmpi
