Files
tilelang/testing/python/math/test_math_bitwise_reduce.py
T
Zhengju Tang ba410ae352 [Feature] Support Reduce operators for bitwise and/or/xor (#1074)
* [Feature] Support Reduce operators for bitwise and/or/xor

* [Lint]
2025-10-20 17:22:29 +08:00

116 lines
3.9 KiB
Python

import tilelang
import tilelang.language as T
import torch
import tilelang.testing
@tilelang.jit(
out_idx=[-1],
pass_configs={
tilelang.PassConfigKey.TL_ENABLE_FAST_MATH: False,
},
)
def bitwise_reduce(
M,
N,
block_M,
block_N,
name,
func,
clear=True,
):
@T.prim_func
def reduce_func(
A: T.Tensor((M, N), "int32"),
B: T.Tensor((M), "int32"),
Output: T.Tensor((M), "int32"),
):
with T.Kernel(T.ceildiv(N, block_N), T.ceildiv(M, block_M), threads=128) as (bx, by):
A_shared = T.alloc_shared((block_M, block_N), "int32")
A_fragment = T.alloc_fragment((block_M, block_N), "int32")
B_shared = T.alloc_shared((block_M,), "int32")
B_fragment = T.alloc_fragment((block_M), "int32")
T.copy(A[by * block_M, bx * block_N], A_shared)
T.copy(A_shared, A_fragment)
T.copy(B[by * block_M], B_shared)
T.copy(B_shared, B_fragment)
func(A_fragment, B_fragment, clear=clear)
T.copy(B_fragment, Output[by * block_M])
return reduce_func
def run_single_bitwise_reduce(
name,
func,
clear=True,
):
M, N = 32, 32
block_M, block_N = 32, 32
kernel = bitwise_reduce(M, N, block_M, block_N, name, func, clear)
# Generate test data that exercises all bit patterns for robust bitwise reduce testing
a = torch.zeros((M, N), device="cuda", dtype=torch.int32)
# Fill with patterns that will produce meaningful results for bitwise operations:
# - Different bit patterns across rows/columns
# - Mix of 0s and 1s in various positions
# - Some all-1s and all-0s patterns for edge cases
for i in range(M):
for j in range(N):
# Create varied bit patterns:
# Row-based pattern: alternating bits based on row index
row_pattern = (i & 0xF) << (i % 4) # 4-bit patterns shifted by row
# Column-based pattern: different bit positions set based on column
col_pattern = (1 << (j % 31)) # Single bit set at different positions
# Combine patterns with XOR to create diverse bit distributions
# Add some deterministic "noise" based on position
position_factor = (i * N + j) % 256
# Final value combines all patterns
a[i, j] = (row_pattern ^ col_pattern ^ position_factor) & 0xFFFFFFFF
if i % 4 == 0:
a[i, j] &= ~(0x1 << (i // 4))
elif i % 2 == 0:
a[i, j] |= (0x1 << (i // 2))
if name == "reduce_bitand":
expected = torch.full((M,), -1, device="cuda", dtype=torch.int32)
elif name == "reduce_bitor" or name == "reduce_bitxor":
expected = torch.full((M,), 0, device="cuda", dtype=torch.int32)
else:
raise ValueError("Invalid name: {}".format(name))
output = kernel(a, expected)
for i in range(M):
for j in range(N):
if name == "reduce_bitand":
expected[i] = expected[i] & a[i, j]
elif name == "reduce_bitor":
expected[i] = expected[i] | a[i, j]
elif name == "reduce_bitxor":
expected[i] = expected[i] ^ a[i, j]
else:
raise ValueError("Invalid name: {}".format(name))
assert torch.all(output == expected)
print("✓ {} with clear={} test passed".format(name, clear))
@tilelang.testing.requires_cuda
def test_bitwise_reduce_ops():
run_single_bitwise_reduce("reduce_bitand", T.reduce_bitand, clear=True)
run_single_bitwise_reduce("reduce_bitor", T.reduce_bitor, clear=True)
run_single_bitwise_reduce("reduce_bitxor", T.reduce_bitxor, clear=True)
run_single_bitwise_reduce("reduce_bitand", T.reduce_bitand, clear=False)
run_single_bitwise_reduce("reduce_bitor", T.reduce_bitor, clear=False)
run_single_bitwise_reduce("reduce_bitxor", T.reduce_bitxor, clear=False)
if __name__ == "__main__":
tilelang.testing.main()