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--- cluster:192 [2020/02/26 19:47]
hmeij07 [Usage]
+++ cluster:192 [2020/02/26 20:00]
hmeij07 [Usage]
@@ Line 34: / Line 34: @@
 </code>
+Peer to peer communication is possible (via PCIe rather than NVlink) with this hardware.  This will get rather messy in setting up.  Some quick off the cuff performance data reveals some impact. Generally in our environment the gains are not worth the effort.  Using Amber and ''pmemd.cuda.MPI''
+<code>
+                                                                              cpu:gpu
+mdout.325288:|  Master Total CPU time:          982.60 seconds     0.27 hours   1:1
+mdout.325289:|  Master Total CPU time:          611.08 seconds     0.17 hours   4:2
+mdout.326208:|  Master Total CPU time:          537.97 seconds     0.15 hours  36:4
+</code>
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