mul_strassen: avoid computing some entries twice #2818
| Job | Run time |
|---|---|
| 14m 54s | |
| 1m 3s | |
| 10m 38s | |
| 7m 34s | |
| 10m 33s | |
| 9m 57s | |
| 12m 28s | |
| 30m 25s | |
| 12m 1s | |
| 5m 18s | |
| 1h 54m 51s |
| Job | Run time |
|---|---|
| 14m 54s | |
| 1m 3s | |
| 10m 38s | |
| 7m 34s | |
| 10m 33s | |
| 9m 57s | |
| 12m 28s | |
| 30m 25s | |
| 12m 1s | |
| 5m 18s | |
| 1h 54m 51s |