fix(dnn/cuda): fix ptx mma algo compute bugs

GitOrigin-RevId: 19628d0c94e93ff1072db2eb04547e6f8db5f809

dnn/src/cuda/ptx/uint4_int4/fuse_z_imma8832_ldg16_128x256_relu.cu

@@ -476,6 +476,20 @@ extern "C" __global__ void __launch_bounds__(256)
         __syncthreads();
     }
 
+    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
+    const float* bias_ptr = bias + oc;
+
+    int4 load_bias0 = make_int4(0, 0, 0, 0);
+    int4 load_bias1 = make_int4(0, 0, 0, 0);
+    int4 load_bias2 = make_int4(0, 0, 0, 0);
+    int4 load_bias3 = make_int4(0, 0, 0, 0);
+    if (oc < param.oc) {
+        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
+        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
+        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
+        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
+    }
+
     // read fuse_z
     int2 reg_fuse_z[reg_m] = {make_int2(z_zero_point, z_zero_point),
                               make_int2(z_zero_point, z_zero_point),
@@ -595,18 +609,7 @@ extern "C" __global__ void __launch_bounds__(256)
     __syncthreads();
 
     /// output
-    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
-    const float* bias_ptr = bias + oc;
-
-    int4 load_bias0 = make_int4(0, 0, 0, 0);
-    int4 load_bias1 = make_int4(0, 0, 0, 0);
-    int4 load_bias2 = make_int4(0, 0, 0, 0);
-    int4 load_bias3 = make_int4(0, 0, 0, 0);
     if (oc < param.oc) {
-        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
-        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
-        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
-        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
         mul_v4(load_bias0, load_bias0, beta);
         mul_v4(load_bias1, load_bias1, beta);
         mul_v4(load_bias2, load_bias2, beta);
@@ -617,7 +620,6 @@ extern "C" __global__ void __launch_bounds__(256)
 
 #pragma unroll
     for (int y = 0; y < reg_m; y += 4) {
-        I2F_4x8(reg_acc, y, 0);
         FMA_4x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
         FUSE_Z_4x8(reg_acc, y, 0, reg_fuse_z, gamma, z_zero_point);
         PACK_F2I_WITH_RELU_4x8(reg_acc, y, 0, relu, dst_zero_point);

dnn/src/cuda/ptx/uint4_int4/fuse_z_imma8832_ldg16_256x64_relu.cu

@@ -657,6 +657,20 @@ extern "C" __global__ void __launch_bounds__(256)
         __syncthreads();
     }
 
+    size_t oc = bidy * BM + 16 * idx_in_quad;
+    const float* bias_ptr = bias + oc;
+
+    int4 load_bias0 = make_int4(0, 0, 0, 0);
+    int4 load_bias1 = make_int4(0, 0, 0, 0);
+    int4 load_bias2 = make_int4(0, 0, 0, 0);
+    int4 load_bias3 = make_int4(0, 0, 0, 0);
+    if (oc < param.oc) {
+        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
+        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
+        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
+        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
+    }
+
     // read fuse_z
     int2 reg_fuse_z[reg_m] = {make_int2(z_zero_point, z_zero_point),
                               make_int2(z_zero_point, z_zero_point),
@@ -712,6 +726,14 @@ extern "C" __global__ void __launch_bounds__(256)
         reg_flt[0][j] = make_int4(x, y, z, w);
     }
 
+    /// output
+    if (oc < param.oc) {
+        mul_v4(load_bias0, load_bias0, beta);
+        mul_v4(load_bias1, load_bias1, beta);
+        mul_v4(load_bias2, load_bias2, beta);
+        mul_v4(load_bias3, load_bias3, beta);
+    }
+
 // compute
 #pragma unroll
     for (int k_inner = 0; k_inner < BKd32; k_inner++) {
@@ -773,35 +795,20 @@ extern "C" __global__ void __launch_bounds__(256)
 
     __syncthreads();
 
-    /// output
-    size_t oc = bidy * BM + 16 * idx_in_quad;
-    const float* bias_ptr = bias + oc;
-
-    int4 load_bias0 = make_int4(0, 0, 0, 0);
-    int4 load_bias1 = make_int4(0, 0, 0, 0);
-    int4 load_bias2 = make_int4(0, 0, 0, 0);
-    int4 load_bias3 = make_int4(0, 0, 0, 0);
-    if (oc < param.oc) {
-        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
-        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
-        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
-        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
-        mul_v4(load_bias0, load_bias0, beta);
-        mul_v4(load_bias1, load_bias1, beta);
-        mul_v4(load_bias2, load_bias2, beta);
-        mul_v4(load_bias3, load_bias3, beta);
-    }
-
     int8_t* __restrict__ g_dst_ptr = dst + d_offset;
 
+    FMA_1x8(reg_acc, 0, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
+    fuse_z_1x8(reg_acc[0], 0, reg_fuse_z[0], gamma, z_zero_point);
+    PACK_F2I_WITH_RELU_1x8(reg_acc, 0, 0, relu, dst_zero_point);
+
 #pragma unroll
-    for (int y = 0; y < reg_m; y += 4) {
-        I2F_4x8(reg_acc, y, 0);
-        FMA_4x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
-        FUSE_Z_4x8(reg_acc, y, 0, reg_fuse_z, gamma, z_zero_point);
-        PACK_F2I_WITH_RELU_4x8(reg_acc, y, 0, relu, dst_zero_point);
-        STG_AFTER_LDG_4x1(g_offset, reg_acc, y, 0);
+    for (int y = 1; y < reg_m; y += 1) {
+        FMA_1x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
+        fuse_z_1x8(reg_acc[y], 0, reg_fuse_z[y], gamma, z_zero_point);
+        PACK_F2I_WITH_RELU_1x8(reg_acc, y, 0, relu, dst_zero_point);
+        STG_AFTER_LDG(g_offset[y - 1], reg_acc[y - 1][0], stg_guard[y - 1]);
     }
+    STG_AFTER_LDG(g_offset[7], reg_acc[7][0], stg_guard[7]);
 #endif
 }
 }  // namespace

dnn/src/cuda/ptx/uint4_int4/fuse_z_imma8832_ldgsts16_128x128_relu.cu

@@ -437,7 +437,7 @@ extern "C" __global__ void __launch_bounds__(256)
         cp_async_fence();
     }
 
-    bool only_one_stage = (stage == 1) ? true : false;
+    bool only_one_stage = (stage == 1);
     if (stage >= 2) {
         cp_async_wait(stages - 2);
     } else {
@@ -844,6 +844,20 @@ extern "C" __global__ void __launch_bounds__(256)
         cp_async_wait(stages - 2);
     }
 
+    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
+    const float* bias_ptr = bias + oc;
+
+    int4 load_bias0 = make_int4(0, 0, 0, 0);
+    int4 load_bias1 = make_int4(0, 0, 0, 0);
+    int4 load_bias2 = make_int4(0, 0, 0, 0);
+    int4 load_bias3 = make_int4(0, 0, 0, 0);
+    if (oc < param.oc) {
+        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
+        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
+        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
+        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
+    }
+
     if (!only_one_stage) {
 #pragma unroll  // low
         for (int i = 0; i < reg_nd4; ++i) {
@@ -975,6 +989,13 @@ extern "C" __global__ void __launch_bounds__(256)
         reg_flt[0][j] = make_int4(x, y, z, w);
     }
 
+    if (oc < param.oc) {
+        mul_v4(load_bias0, load_bias0, beta);
+        mul_v4(load_bias1, load_bias1, beta);
+        mul_v4(load_bias2, load_bias2, beta);
+        mul_v4(load_bias3, load_bias3, beta);
+    }
+
 // compute
 #pragma unroll
     for (int k_inner = 0; k_inner < BKd32; k_inner++) {
@@ -1038,34 +1059,20 @@ extern "C" __global__ void __launch_bounds__(256)
     __syncthreads();
 
     /// output
-    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
-    const float* bias_ptr = bias + oc;
-
-    int4 load_bias0 = make_int4(0, 0, 0, 0);
-    int4 load_bias1 = make_int4(0, 0, 0, 0);
-    int4 load_bias2 = make_int4(0, 0, 0, 0);
-    int4 load_bias3 = make_int4(0, 0, 0, 0);
-    if (oc < param.oc) {
-        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
-        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
-        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
-        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
-        mul_v4(load_bias0, load_bias0, beta);
-        mul_v4(load_bias1, load_bias1, beta);
-        mul_v4(load_bias2, load_bias2, beta);
-        mul_v4(load_bias3, load_bias3, beta);
-    }
-
     int8_t* __restrict__ g_dst_ptr = dst + d_offset;
 
+    FMA_1x8(reg_acc, 0, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
+    fuse_z_1x8(reg_acc[0], 0, reg_fuse_z[0], gamma, z_zero_point);
+    PACK_F2I_WITH_RELU_1x8(reg_acc, 0, 0, relu, dst_zero_point);
+
 #pragma unroll
-    for (int y = 0; y < reg_m; y += 4) {
-        I2F_4x8(reg_acc, y, 0);
-        FMA_4x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
-        FUSE_Z_4x8(reg_acc, y, 0, reg_fuse_z, gamma, z_zero_point);
-        PACK_F2I_WITH_RELU_4x8(reg_acc, y, 0, relu, dst_zero_point);
-        STG_AFTER_LDG_4x1(g_offset, reg_acc, y, 0);
+    for (int y = 1; y < reg_m; y += 1) {
+        FMA_1x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
+        fuse_z_1x8(reg_acc[y], 0, reg_fuse_z[y], gamma, z_zero_point);
+        PACK_F2I_WITH_RELU_1x8(reg_acc, y, 0, relu, dst_zero_point);
+        STG_AFTER_LDG(g_offset[y - 1], reg_acc[y - 1][0], stg_guard[y - 1]);
     }
+    STG_AFTER_LDG(g_offset[7], reg_acc[7][0], stg_guard[7]);
 #endif
 }
 }  // namespace

dnn/src/cuda/ptx/uint4_int4/imma8832_ldg16_128x256_relu.cu

@@ -475,6 +475,20 @@ extern "C" __global__ void __launch_bounds__(256)
         __syncthreads();
     }
 
+    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
+    const float* bias_ptr = bias + oc;
+
+    int4 load_bias0 = make_int4(0, 0, 0, 0);
+    int4 load_bias1 = make_int4(0, 0, 0, 0);
+    int4 load_bias2 = make_int4(0, 0, 0, 0);
+    int4 load_bias3 = make_int4(0, 0, 0, 0);
+    if (oc < param.oc) {
+        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
+        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
+        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
+        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
+    }
+
     guard = iter < 0;
 #pragma unroll
     for (int i = 0; i < reg_nd4; ++i) {
@@ -574,18 +588,8 @@ extern "C" __global__ void __launch_bounds__(256)
     size_t nhw_post3 = nhw_post0 + 24;
 
     size_t stg_oc = bidy * BM + (warp_y << 6);
-    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
-    const float* bias_ptr = bias + oc;
 
-    int4 load_bias0 = make_int4(0, 0, 0, 0);
-    int4 load_bias1 = make_int4(0, 0, 0, 0);
-    int4 load_bias2 = make_int4(0, 0, 0, 0);
-    int4 load_bias3 = make_int4(0, 0, 0, 0);
     if (oc < param.oc) {
-        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
-        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
-        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
-        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
         mul_v4(load_bias0, load_bias0, beta);
         mul_v4(load_bias1, load_bias1, beta);
         mul_v4(load_bias2, load_bias2, beta);
@@ -599,7 +603,6 @@ extern "C" __global__ void __launch_bounds__(256)
 
 #pragma unroll
     for (int y = 0; y < reg_m; y += 4) {
-        I2F_4x8(reg_acc, y, 0);
         FMA_4x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
         PACK_F2I_WITH_RELU_4x8(reg_acc, y, 0, relu, dst_zero_point);
         STG_4x1(stg_ptr, reg_acc, y, 0);

dnn/src/cuda/ptx/uint4_int4/imma8832_ldg16_256x64_relu.cu

@@ -659,6 +659,20 @@ extern "C" __global__ void __launch_bounds__(256)
         __syncthreads();
     }
 
+    size_t oc = bidy * BM + 16 * idx_in_quad;
+    const float* bias_ptr = bias + oc;
+
+    int4 load_bias0 = make_int4(0, 0, 0, 0);
+    int4 load_bias1 = make_int4(0, 0, 0, 0);
+    int4 load_bias2 = make_int4(0, 0, 0, 0);
+    int4 load_bias3 = make_int4(0, 0, 0, 0);
+    if (oc < param.oc) {
+        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
+        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
+        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
+        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
+    }
+
     guard = iter < 0;
 #pragma unroll  // low
     for (int i = 0; i < reg_nd4; ++i) {
@@ -755,18 +769,8 @@ extern "C" __global__ void __launch_bounds__(256)
     size_t nhw_post3 = nhw_post0 + 24;
 
     size_t stg_oc = bidy * BM;
-    size_t oc = bidy * BM + 16 * idx_in_quad;
-    const float* bias_ptr = bias + oc;
 
-    int4 load_bias0 = make_int4(0, 0, 0, 0);
-    int4 load_bias1 = make_int4(0, 0, 0, 0);
-    int4 load_bias2 = make_int4(0, 0, 0, 0);
-    int4 load_bias3 = make_int4(0, 0, 0, 0);
     if (oc < param.oc) {
-        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
-        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
-        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
-        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
         mul_v4(load_bias0, load_bias0, beta);
         mul_v4(load_bias1, load_bias1, beta);
         mul_v4(load_bias2, load_bias2, beta);
@@ -779,7 +783,6 @@ extern "C" __global__ void __launch_bounds__(256)
 
 #pragma unroll
     for (int y = 0; y < reg_m; y += 4) {
-        I2F_4x8(reg_acc, y, 0);
         FMA_4x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
         PACK_F2I_WITH_RELU_4x8(reg_acc, y, 0, relu, dst_zero_point);
         STG_4x1(stg_ptr, reg_acc, y, 0);

dnn/src/cuda/ptx/uint4_int4/imma8832_ldgsts16_128x128_relu.cu

@@ -449,15 +449,15 @@ extern "C" __global__ void __launch_bounds__(256)
     bool stg_guard[8];
 #pragma unroll
     for (int y = 0; y < reg_m; y += 4) {
-        COMPUTE_OFFSET_4x1(reg_fuse_z, g_offset, y)
+        COMPUTE_OFFSET_4x1(g_offset, y);
 
-                nhw_post0 += 32;
+        nhw_post0 += 32;
         nhw_post1 += 32;
         nhw_post2 += 32;
         nhw_post3 += 32;
     }
 
-    bool only_one_stage = (stage == 1) ? true : false;
+    bool only_one_stage = (stage == 1);
     if (stage >= 2) {
         cp_async_wait(stages - 2);
     } else {
@@ -835,6 +835,20 @@ extern "C" __global__ void __launch_bounds__(256)
         cp_async_wait(stages - 2);
     }
 
+    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
+    const float* bias_ptr = bias + oc;
+
+    int4 load_bias0 = make_int4(0, 0, 0, 0);
+    int4 load_bias1 = make_int4(0, 0, 0, 0);
+    int4 load_bias2 = make_int4(0, 0, 0, 0);
+    int4 load_bias3 = make_int4(0, 0, 0, 0);
+    if (oc < param.oc) {
+        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
+        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
+        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
+        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
+    }
+
     if (!only_one_stage) {
 #pragma unroll  // low
         for (int i = 0; i < reg_nd4; ++i) {
@@ -965,6 +979,13 @@ extern "C" __global__ void __launch_bounds__(256)
         reg_flt[0][j] = make_int4(x, y, z, w);
     }
 
+    if (oc < param.oc) {
+        mul_v4(load_bias0, load_bias0, beta);
+        mul_v4(load_bias1, load_bias1, beta);
+        mul_v4(load_bias2, load_bias2, beta);
+        mul_v4(load_bias3, load_bias3, beta);
+    }
+
 // compute
 #pragma unroll
     for (int k_inner = 0; k_inner < BKd32; k_inner++) {
@@ -1028,38 +1049,19 @@ extern "C" __global__ void __launch_bounds__(256)
     __syncthreads();
 
     /// output
-    size_t oc = bidy * BM + (warp_y << 6) + 16 * idx_in_quad;
-    const float* bias_ptr = bias + oc;
-
-    int4 load_bias0 = make_int4(0, 0, 0, 0);
-    int4 load_bias1 = make_int4(0, 0, 0, 0);
-    int4 load_bias2 = make_int4(0, 0, 0, 0);
-    int4 load_bias3 = make_int4(0, 0, 0, 0);
-    if (oc < param.oc) {
-        load_bias0 = *(reinterpret_cast<const int4*>(bias_ptr));
-        load_bias1 = *(reinterpret_cast<const int4*>(bias_ptr + 4));
-        load_bias2 = *(reinterpret_cast<const int4*>(bias_ptr + 8));
-        load_bias3 = *(reinterpret_cast<const int4*>(bias_ptr + 12));
-        mul_v4(load_bias0, load_bias0, beta);
-        mul_v4(load_bias1, load_bias1, beta);
-        mul_v4(load_bias2, load_bias2, beta);
-        mul_v4(load_bias3, load_bias3, beta);
-    }
 
     int8_t* __restrict__ g_dst_ptr = dst + d_offset;
 
-#pragma unroll
-    for (int y = 0; y < reg_m; y += 4) {
-        I2F_4x8(reg_acc, y, 0);
-        FMA_4x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
-        PACK_F2I_WITH_RELU_4x8(reg_acc, y, 0, relu, dst_zero_point);
-        STG_AFTER_LDG_4x1(g_offset, reg_acc, y, 0);
+    FMA_1x8(reg_acc, 0, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
+    PACK_F2I_WITH_RELU_1x8(reg_acc, 0, 0, relu, dst_zero_point);
 
-        nhw_post0 += 32;
-        nhw_post1 += 32;
-        nhw_post2 += 32;
-        nhw_post3 += 32;
+#pragma unroll
+    for (int y = 1; y < reg_m; y += 1) {
+        FMA_1x8(reg_acc, y, 0, alpha, load_bias0, load_bias1, load_bias2, load_bias3);
+        PACK_F2I_WITH_RELU_1x8(reg_acc, y, 0, relu, dst_zero_point);
+        STG_AFTER_LDG(g_offset[y - 1], reg_acc[y - 1][0], stg_guard[y - 1]);
     }
+    STG_AFTER_LDG(g_offset[7], reg_acc[7][0], stg_guard[7]);
 #endif
 }
 }  // namespace

dnn/src/cuda/ptx/uint4_int4/macro.cuh

@@ -23,78 +23,26 @@ __device__ __forceinline__ void mul_v4<float>(
 __device__ __forceinline__ void fma2(
         int2& c0, const int2 a0, int2& c1, const int2 a1, const float alpha,
         const int4 b) {
-    asm("fma.rz.f32 %0, %1, %2, %3;"
-        : "=f"(((float*)&c0)[0])
-        : "f"(((float*)&a0)[0]), "f"(alpha), "f"(((float*)&b)[0]));
-    asm("fma.rz.f32 %0, %1, %2, %3;"
-        : "=f"(((float*)&c0)[1])
-        : "f"(((float*)&a0)[1]), "f"(alpha), "f"(((float*)&b)[1]));
-    asm("fma.rz.f32 %0, %1, %2, %3;"
-        : "=f"(((float*)&c1)[0])
-        : "f"(((float*)&a1)[0]), "f"(alpha), "f"(((float*)&b)[2]));
-    asm("fma.rz.f32 %0, %1, %2, %3;"
-        : "=f"(((float*)&c1)[1])
-        : "f"(((float*)&a1)[1]), "f"(alpha), "f"(((float*)&b)[3]));
-}
-
-__device__ __forceinline__ void fuse_z_1x8(
-        int4* a, const int& j, const int4& fuse_z, const float& gamma,
-        const int32_t& zero_point) {
-    const int2 z[2] = {
-            *reinterpret_cast<const int2*>(&fuse_z),
-            *(reinterpret_cast<const int2*>(&fuse_z) + 1)};
-    for (int k = 0; k < 4; k++) {
-        int f = ((z[0].x >> (k * 8)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k]))[0] += (f - zero_point) * gamma;
-        f = ((z[0].x >> (k * 8 + 4)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k]))[1] += (f - zero_point) * gamma;
-
-        f = ((z[1].x >> (k * 8)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k]))[2] += (f - zero_point) * gamma;
-        f = ((z[1].x >> (k * 8 + 4)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k]))[3] += (f - zero_point) * gamma;
-    }
-    for (int k = 0; k < 4; k++) {
-        int f = ((z[0].y >> (k * 8)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k + 4]))[0] += (f - zero_point) * gamma;
-        f = ((z[0].y >> (k * 8 + 4)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k + 4]))[1] += (f - zero_point) * gamma;
-
-        f = ((z[1].y >> (k * 8)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k + 4]))[2] += (f - zero_point) * gamma;
-        f = ((z[1].y >> (k * 8 + 4)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k + 4]))[3] += (f - zero_point) * gamma;
-    }
+    ((float*)&c0)[0] = a0.x * alpha + ((float*)&b)[0];
+    ((float*)&c0)[1] = a0.y * alpha + ((float*)&b)[1];
+    ((float*)&c1)[0] = a1.x * alpha + ((float*)&b)[2];
+    ((float*)&c1)[1] = a1.y * alpha + ((float*)&b)[3];
 }
 
 __device__ __forceinline__ void fuse_z_1x8(
         int2* a, const int& j, const int2& fuse_z, const float& gamma,
         const int32_t& zero_point) {
+    float x = zero_point * gamma;
 #pragma unroll
     for (int k = 0; k < 4; k++) {
         int f = ((fuse_z.x >> (k * 8)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k]))[0] += (f - zero_point) * gamma;
+        ((float*)&(a[j + k]))[0] += f * gamma - x;
         f = ((fuse_z.x >> (k * 8 + 4)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k]))[1] += (f - zero_point) * gamma;
-    }
-#pragma unroll
-    for (int k = 0; k < 4; k++) {
-        int f = ((fuse_z.y >> (k * 8)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k + 4]))[0] += (f - zero_point) * gamma;
+        ((float*)&(a[j + k]))[1] += f * gamma - x;
+        f = ((fuse_z.y >> (k * 8)) & 15);
+        ((float*)&(a[j + k + 4]))[0] += f * gamma - x;
         f = ((fuse_z.y >> (k * 8 + 4)) & 15);
-        f = (f << 28) >> 28;
-        ((float*)&(a[j + k + 4]))[1] += (f - zero_point) * gamma;
+        ((float*)&(a[j + k + 4]))[1] += f * gamma - x;
     }
 }
 
@@ -282,12 +230,6 @@ __device__ __forceinline__ void pack_f2i_with_relu(
     fuse_z_1x8(a[i + 2], j, fuse_z[i + 2], gamma, zero_point); \
     fuse_z_1x8(a[i + 3], j, fuse_z[i + 3], gamma, zero_point);
 
-#define FUSE_Z_4x8(a, i, j, fuse_z, gamma, zero_point)         \
-    fuse_z_1x8(a[i], j, fuse_z[i], gamma, zero_point);         \
-    fuse_z_1x8(a[i + 1], j, fuse_z[i + 1], gamma, zero_point); \
-    fuse_z_1x8(a[i + 2], j, fuse_z[i + 2], gamma, zero_point); \
-    fuse_z_1x8(a[i + 3], j, fuse_z[i + 3], gamma, zero_point);
-
 // 1x8 1x(2x8 int2) to 2 int2
 #define PACK_F2I_1x8(a, i, j)                                                       \
     pack_f2i(a[i][j].x, a[i][j].z, a[i][j], a[i][j + 1], a[i][j + 2], a[i][j + 3]); \
@@ -316,24 +258,20 @@ __device__ __forceinline__ void pack_f2i_with_relu(
         stg_guard[i + 2])                                                    \
     LDG(d[i + 3], s[i + 3], 3, reg_src_cache[0].w, reg_src_cache[1].w, stg_guard[i + 3])
 
-#define COMPUTE_OFFSET(d, s, idx, n_reuse, hw_reuse, g)         \
+#define COMPUTE_OFFSET(s, idx, n_reuse, hw_reuse, g)            \
     n_reuse = nhw_post##idx / param.div_ohow;                   \
     hw_reuse = nhw_post##idx % param.div_ohow;                  \
     s = n_reuse * param.obs + hw_reuse * (packed_channel >> 1); \
     g = nhw_post##idx < param.nhw;
 
-#define COMPUTE_OFFSET_4x1(d, s, i)                                              \
-    COMPUTE_OFFSET(                                                              \
-            d[i], s[i], 0, reg_src_cache[0].x, reg_src_cache[1].x, stg_guard[i]) \
-    COMPUTE_OFFSET(                                                              \
-            d[i + 1], s[i + 1], 1, reg_src_cache[0].y, reg_src_cache[1].y,       \
-            stg_guard[i + 1])                                                    \
-    COMPUTE_OFFSET(                                                              \
-            d[i + 2], s[i + 2], 2, reg_src_cache[0].z, reg_src_cache[1].z,       \
-            stg_guard[i + 2])                                                    \
-    COMPUTE_OFFSET(                                                              \
-            d[i + 3], s[i + 3], 3, reg_src_cache[0].w, reg_src_cache[1].w,       \
-            stg_guard[i + 3])
+#define COMPUTE_OFFSET_4x1(s, i)                                                   \
+    COMPUTE_OFFSET(s[i], 0, reg_src_cache[0].x, reg_src_cache[1].x, stg_guard[i])  \
+    COMPUTE_OFFSET(                                                                \
+            s[i + 1], 1, reg_src_cache[0].y, reg_src_cache[1].y, stg_guard[i + 1]) \
+    COMPUTE_OFFSET(                                                                \
+            s[i + 2], 2, reg_src_cache[0].z, reg_src_cache[1].z, stg_guard[i + 2]) \
+    COMPUTE_OFFSET(                                                                \
+            s[i + 3], 3, reg_src_cache[0].w, reg_src_cache[1].w, stg_guard[i + 3])
 
 #define STG_AFTER_LDG(d, s, g)                                                      \
     if (stg_oc < param.oc && g) {                                                   \