I am running gromacs on a machine with altivec support. My understanding is I have to use MVAPICH on this machine.
I occasionally have runs crash and I receive the following error n559(0): Loaded with Money n536(14): 14 - MPI_ALLREDUCE : Null communicator n536(14): [14] [] Aborting Program! n559(0): 0 - MPI_ALLREDUCE : Null communicator n559(0): [0] [] Aborting Program! Cleaning up all processes ...Cleaning up all processes ...done. Does this indicate a problem with the machine, mvapich, or gromacs? Again, this doesn't always happen, just sometimes (which makes me suspect it is a machine issue). Any advice on where the problem might be would be helpful. thanks in advance. -Paul
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