I'm running Gromacs 4.6.1 on 2 nodes with 3 GPUs(2 on host1,1 on host2, all nvidia K20c), and I'm using openMPI 1.6.4 to let Gromacs run parallel on 2 nodes. However, I found that Gromacs can only find the GPUs on the local node which it's launched, it can't automatically use the GPUs on the other node. I've been wondering whether current version of Gromacs support such kind of configuration(multiple GPUs on multiple nodes). Could you please give me some advice on how to fix this problem?
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