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cluster:109 [2013/02/02 13:46]
hmeij [Lammps GPU Testing (EC)]
cluster:109 [2013/02/02 15:26]
hmeij [Lammps GPU Testing (EC)]
Line 4: Line 4:
 ===== Lammps GPU Testing (EC) ===== ===== Lammps GPU Testing (EC) =====
  
-  * 32 cores+  * 32 cores E2660
   * 4 K20 GPU   * 4 K20 GPU
   * workstation   * workstation
Line 10: Line 10:
  
  
-Same tests using lj/cut, eam, lj/expand, and morse: AU.reduced+Same tests (12 cpu cores) using lj/cut, eam, lj/expand, and morse: **AU.reduced**
  
-    CPU only mins 10 secs+    CPU only mins secs
     1 GPU 1 mins 1 secs (a 5-6 times speed up)     1 GPU 1 mins 1 secs (a 5-6 times speed up)
-    2 GPUs mins 46 secs (never saw 2nd GPU used, problem set too small?)+    2 GPUs mins secs (never saw 2nd GPU used, problem set too small?)
  
-Same tests using a restart file and using gayberne: GB+Same tests (12 cpu cores) using a restart file and using gayberne: **GB**
  
     CPU only 1 hour 5 mins     CPU only 1 hour 5 mins
-    1 GPU mins and 33 secs (a 18-19 times peed up) +    1 GPU mins and 15 secs (a 18-19 times peed up) 
-    2 GPUs 2 mins (see below)+    2 GPUs 2 mins 
 + 
 +Francis's Melt problem set 
 + 
 +^3d Lennard-Jones melt: for 10,000 steps with 32,000 atoms^^^^^^ 
 +|CPU only|  -np 1  |  -np 6 | -np 12  |  -np 24  |  -np 36  | 
 +|loop times|  329s  |  63s  |  39s  |    29s  |  45s  | 
 +|GPU only|  1xK20  |  2xK20 |  3xK20  |  4xK20  |  (-np 1-4 | 
 +|loop times|  28s  |  16s |  11s  |  10s  |    | 
 +^3d Lennard-Jones melt: for 100,000 steps with 32,000 atoms^^^^^^ 
 +|GPU only|  1xK20  |  2xK20 |  3xK20  |  4xK20  |  (-np 1-4)  | 
 +|loop times|  274s  |  162s |  120s  |  98s  |    | 
 + 
 + 
  
 ===== Lammps GPU Testing (MW) ===== ===== Lammps GPU Testing (MW) =====
cluster/109.txt · Last modified: 2013/10/16 15:13 by hmeij