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--- cluster:175 [2018/09/22 12:52]
hmeij07 [Gromacs]
+++ cluster:175 [2018/09/23 12:22]
hmeij07 [Gromacs]
@@ Line 3: / Line 3: @@
 **[[cluster:0|Back]]**
-==== GTX vs P100 & K20 ====
+==== P100 vs GTX & K20 ====
-Comparing these GPUs yields the following data. These are not "benchmark suites" so your mileage may vary. It will give us some comparative information for decision making on our 2018 GPU Expansion Project.  The GTX & K20 data comes from this page [[cluster:164|GTX 1080 Ti]]
+^    ^  P100  ^  GTX  ^  K20  ^    ^
+|  cores  |  3,584  |  3,584  |  2,496  |  count  |
+|  mem  |  12/16  |  11  |  5  |  gb  |
+|  ghz  |  2.6  |  1.6  |  0.7  |  speed  |
+|  flops  |  4.7/5.3  |  0.355  |  1.15  |  dpfp  |
+Comparing these GPUs yields the following results presented below. These are not "benchmark suites" so your mileage may vary. It will give us some comparative information for decision making on our 2018 GPU Expansion Project.  The GTX & K20 data comes from this page [[cluster:164|GTX 1080 Ti]]
 Credits: This work was made possible, in part, through HPC time donated by Microway, Inc. We gratefully acknowledge Microway for providing access to their GPU-accelerated compute cluster.
@@ Line 30: / Line 36: @@
 </code>
+Look at these gpu temperatures, that's Celsius.
 ==== Lammps ====
@@ Line 75: / Line 83: @@
 localhost,localhost,localhost,localhost,localhost,localhost,\
 localhost,localhost,localhost,localhost,localhost,localhost,localhost \
-gmx_mpi mdrun -gpu_id 0123 -ntmpi 0 \
+gmx_mpi mdrun -gpu_id 0123 -ntmpi 0 -nt 0 \
  -s topol.tpr -ntomp 4 -npme 1 -nsteps 20000 -pin on -nb gpu
@@ Line 96: / Line 104: @@
 </code>
+==== What to Buy ====
+  * Amber folks: does not matter
+  * Lammps folks: P100 nodes please
+  * Gromacs folks: GTX nodes please
+Remember that GTX gpus placed in Data Center voids their warranty.
 \\

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