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--- cluster:175 [2018/09/22 12:40]
hmeij07 [GTX vs P100 vs K20]
+++ cluster:175 [2018/09/22 12:45]
hmeij07 [Lammps]
@@ Line 12: / Line 12: @@
 ==== Amber ====
-Amber16 continues to run best when one MPI process launches the GPU counterpart.  One can not complain about utilization rates. So a dual P100 server delivers 24 ns/day and a quad P100 server delivers near 48 ns/day. Our quad GTX1080 server delivers 48.96 ns/day (4.5x faster than K20).
+Amber16 continues to run best when one MPI process launches the GPU counterpart.  One can not complain about utilization rates. So a dual P100 server delivers 24 ns/day and a quad P100 server delivers near 48 ns/day. Our quad GTX1080 server delivers 48.96 ns/day (4.5x faster than K20). We have dual P100 nodes quoted.
 <code>
@@ Line 20: / Line 20: @@
 gpu=1 mpi=1 11.94 ns/day
-any mpi>1 performace goes down...
+any mpi>1 and performance goes down...
 [heme@login1 amber]$ ssh node6 ~/p100-info
@@ Line 52: / Line 52: @@
 gpu=4 mpi=4
 Performance: 3341009.801 tau/day, 7733.819 timesteps/s
-any mpi>gpu yielded degraded performance.
+any mpi>gpu yielded degraded performance...
 index, name, temp.gpu, mem.used [MiB], mem.free [MiB], util.gpu [%], util.mem [%]

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