Skip to content

Fix missing FNV constants in CuTe rainbow table starter (PR #220) #223

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
kunal-mansukhani merged 2 commits into from
Mar 21, 2026
Merged

Fix missing FNV constants in CuTe rainbow table starter (PR #220) #223

Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
448d543
Update starter.cute.py: add fnv1a_hash for CuTeDSL
DiamondI Mar 19, 2026
262c2a1
Fix missing FNV_PRIME and OFFSET_BASIS constants in CuTe starter
github-actions[bot] Mar 21, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
13 changes: 13 additions & 0 deletions challenges/easy/24_rainbow_table/starter/starter.cute.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,19 @@
import cutlass.cute as cute


def fnv1a_hash_u32_scalar(x):
FNV_PRIME = 16777619
OFFSET_BASIS = 2166136261
val = cute.Uint32(x)
hash_val = cute.Uint32(OFFSET_BASIS)
prime = cute.Uint32(FNV_PRIME)
mask = cute.Uint32(0xFF)
for byte_pos in range(4):
byte = (val >> (byte_pos * 8)) & mask
hash_val = (hash_val ^ byte) * prime
return cute.Uint32(hash_val)


# input, output are tensors on the GPU
@cute.jit
def solve(input: cute.Tensor, output: cute.Tensor, N: cute.Int32, R: cute.Int32):
Expand Down
Loading