[BUG] Slot calculation error in static_hash_table.cu

[Jiaao-Bai]

Describe the bug
in gpu_cache/src/static_hash_table.cu, line 117, why slot accumulate again? it seems like slot already in next group before line 117

To Reproduce

Expected behavior

Screenshots

Environment (please complete the following information):

Additional context

[Jiaao-Bai]

if "& (capacity - 1)" clear the lower bits, then step 0 run twice

[RayWang96]

I'm not the author of this code, but I can give some comments. In my understanding, this is a variant of the linear probing method for hash. Line 117 is used to probe different hash addresses. Since the author assumes that the capacity is a power of 2, "& (capacity - 1)" is equivalent to "% capacity". I don't think the step 0 will run twice, it should probe a different address when the loop continue.