[CP2K-user] 64 water benchmark slow with multiple nodes

MD Simulation mdsimula... at gmail.com
Wed Feb 5 02:07:06 UTC 2020


I am running the 64 water benchmark and I see a huge slow down when I use more than one node:

1 node, 24 cores, 55s
2 nodes, 48 cores, 700s

I suspect I've done something wrong during compilation. Any ideas what would cause the slow down? 


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