Large data set VLASS1.2.sb36491855.eb36574404.58585.53016267361_datacolumn.ms with full parameters
| Step | NRAO (steps-all-parallel9) | NRAO/CHTC (steps-all-parallel10) | NRAO/AWS (steps-all-parallel16) |
|---|---|---|---|
| 01 | 9.4 | 9.2 | |
| 05 | 60.2 | ||
| 06 | 24 | ||
| 07 | 11.8 | ||
| 15 | 55.2 | ||
| 16 | 6.1 | ||
| 23 | 230.8 | ||
| 24 | 46 |
Small data set test.ms with full parameters
| Step | NRAO (steps-all-parallel12) | NRAO/CHTC (steps-all-parallel15) | NRAO/AWS (steps-all-parallel14) |
|---|---|---|---|
| 01 | 1.8 | 2.0 | 1.9 |
| 05 | 8.6 | 56.8 | 5.1 |
| 06 | 3.0 | 3.9 | 2.0 |
| 07 | 2.0 | 2.3 | 2.2 |
| 15 | 6.9 | 4.3 | |
| 16 | 1.4 | 1.4 | |
| 23 | 8.3 | 5.3 | |
| 24 | 14.1 | 16.8 |
CPUs at CHTC are noticibly slower than CPUs at NRAO. For example, their set of c20xx machines (e20{03..18}) each have two Intel Xeon Silver 4114 2.20GHz processors and 0.5TB to 1TB of memory, while their large memory machines (mem3, mem2001, mem2002) each have four Intel Xeon E7-4820 v4 2.00GHz processors and 2TB to 4TB of memory. These slower CPUs combined with multiple users and possibly Hyperthreading is probably the cause for the significantly slower performance at CHTC.