#1075: Test cases with specific number of processes --------------------------+------------------------------------------------- Reporter: eschnett | Owner: Type: enhancement | Status: review Priority: major | Milestone: Component: Cactus | Version: Resolution: | Keywords: --------------------------+-------------------------------------------------
Comment (by knarf):
This is a problem regardless of the number of cores. Some mpi implementations look for a file containing a list of the nodes used, together with the number of processes on each, e.g.
{{{ cnode01: 4 cnode02: 4 }}}
Now consider such a file when requesting only one process
{{{ cnode01: 1 }}}
When you then try to run with two the mpi implementation would complain that it doesn't know where to run two processes. After all, the list only contains one and you are not supposed to run on more than one because you only requested one through the queuing system.