[cuda backend] replace floor_div with float_div
#7781
| Job | Run time |
|---|---|
| 6m 24s | |
| 10m 6s | |
| 9m 41s | |
| 26m 11s |
floor_div with float_div
#7781
| Job | Run time |
|---|---|
| 6m 24s | |
| 10m 6s | |
| 9m 41s | |
| 26m 11s |