1,2,4,6,8 and 9 processors (that is, server plus newest nodes). Note that the 1-processor benchmark was obtained on one of the compute nodes (pc10, not the server). This explains the value of 2.18 for the 2-processor case.
Number of processors | Days per nanosecond of simulation | Scale-up |
1 | 17.464 | 1.00 |
2 | 8.013 | 2.18 |
4 | 4.755 | 3.67 |
6 | 3.799 | 4.60 |
8 | 2.794 | 6.25 |
9 | 2.616 | 6.67 |
Graphically : NAMD scale-up for 1,2,4,6,8,9 procs