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Update bitnet_kernels.h #310

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Update bitnet_kernels.h #310

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ba5d6d6
Update bitnet_kernels.h
Ogiwara-CostlierRain464 Jul 7, 2025
ab915c3
support multi batch on ladder_int8xint2_kernel
Ogiwara-CostlierRain464 Sep 20, 2025
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8 changes: 4 additions & 4 deletions gpu/bitnet_kernels/bitnet_kernels.h
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Original file line number Diff line number Diff line change
Expand Up @@ -49,14 +49,14 @@ __global__ void __launch_bounds__(128) ladder_int8xint2_kernel(int8_t* __restric
constexpr int wmma_K = 32;
constexpr int wmma_N = 16;
int in_thread_C_local[1];
signed char A_local[K_per_loop];
alignas(16) signed char A_local[K_per_loop];
int B_reshape_local[1];
signed char B_decode_local[K_per_loop];
int red_buf0[1];
in_thread_C_local[0] = 0;
#pragma unroll
for (int k_0 = 0; k_0 < K/(K_per_loop * K_block_size); ++k_0) {
*(int4*)(A_local + 0) = *(int4*)(A + ((k_0 * K_per_loop * K_block_size) + (((int)threadIdx.x) * K_per_loop)));
*(int4*)(A_local + 0) = *(int4*)(A + blockIdx.y * K + ((k_0 * K_per_loop * K_block_size) + (((int)threadIdx.x) * K_per_loop)));
B_reshape_local[0] = *(int*)(B +
(((int)blockIdx.x) * N_block_size * K / 4) +
(k_0 * K_block_size * K_per_loop * wmma_N / 4) +
Expand All @@ -76,8 +76,8 @@ __global__ void __launch_bounds__(128) ladder_int8xint2_kernel(int8_t* __restric
for (int offset = K_block_size/2; offset > 0; offset /= 2) {
red_buf0[0] += __shfl_down_sync(__activemask(), red_buf0[0], offset, K_block_size);
}
int out_idx = ((((int)blockIdx.x) * N_block_size) + ((int)threadIdx.y));
int out_idx = ( blockIdx.y * K + (((int)blockIdx.x) * N_block_size) + ((int)threadIdx.y));
int ws_idx = out_idx / (N / ws_num);
if (threadIdx.x == 0)
dtype_transform[out_idx] = (__nv_bfloat16)(((float)red_buf0[0])/(float)s[0]*(float)ws[ws_idx]);
}
}