Random Communication Benchmark
I ran the "random communication benchmark" example on one whole rack:
- 16 nodes (256 cores)
- 10G network
Test 1 (many small messages)
Size of each message |
Number of send and receive |
Number of supersteps |
Job runtime |
500 bytes |
100 |
16 |
7.461 seconds |
500 bytes |
100 |
32 |
9.397 seconds |
500 bytes |
100 |
64 |
14.341 seconds |
500 bytes |
100 |
128 |
26.394 seconds |
500 bytes |
100 |
256 |
43.411 seconds |
500 bytes |
100 |
512 |
84.489 seconds |
500 bytes |
100 |
1024 |
156.581 seconds |
500 bytes |
100 |
2048 |
308.671 seconds |
Test 2 (few large messages)
Size of each message |
Number of send and receive |
Number of supersteps |
Job runtime |
10 kb |
5 |
16 |
13.679 seconds |
10 kb |
5 |
32 |
23.427 seconds |
10 kb |
5 |
64 |
46.398 seconds |
10 kb |
5 |
128 |
86.476 seconds |
10 kb |
5 |
256 |
171.511 seconds |
10 kb |
5 |
512 |
339.608 seconds |