[cuda backend] replace floor_div with float_div
#6771
| Job | Run time |
|---|---|
| 29s | |
| 3s | |
| 29m 5s | |
| 25m 30s | |
| 15m 51s | |
| 29m 54s | |
| 26m 0s | |
| 30m 20s | |
| 35m 16s | |
| 35m 21s | |
| 34m 17s | |
| 34m 22s | |
| 34m 54s | |
| 34m 50s | |
| 6h 6m 12s |