diff --git a/driver/conv.cu b/driver/conv.cu
index 195f34bf72..f486d9ad51 100644
--- a/driver/conv.cu
+++ b/driver/conv.cu
@@ -325,12 +325,20 @@ int main()
 #if 0
     constexpr unsigned N  = 1;
     constexpr unsigned C  = 1;
-    constexpr unsigned HI = 34;
-    constexpr unsigned WI = 34;
+    constexpr unsigned HI = 4;
+    constexpr unsigned WI = 4;
     constexpr unsigned K  = 1;
     constexpr unsigned S  = 3;
     constexpr unsigned R  = 3;
-#elif 1
+#elif 0
+    constexpr unsigned N = 1;
+    constexpr unsigned C = 1;
+    constexpr unsigned HI = 34;
+    constexpr unsigned WI = 34;
+    constexpr unsigned K = 1;
+    constexpr unsigned S = 3;
+    constexpr unsigned R = 3;
+#elif 0
     constexpr unsigned N = 64;
     constexpr unsigned C = 256;
     constexpr unsigned HI = 34;
@@ -338,44 +346,20 @@ int main()
     constexpr unsigned K = 64;
     constexpr unsigned S = 3;
     constexpr unsigned R = 3;
-#elif 0
-    constexpr unsigned N = 72;
-    constexpr unsigned C = 288;
-    constexpr unsigned HI = 38;
-    constexpr unsigned WI = 38;
-    constexpr unsigned K = 72;
+#elif 1
+    constexpr unsigned N = 64;
+    constexpr unsigned C = 64;
+    constexpr unsigned HI = 56;
+    constexpr unsigned WI = 56;
+    constexpr unsigned K = 64;
     constexpr unsigned S = 3;
     constexpr unsigned R = 3;
 #elif 0
-    constexpr unsigned N = 1;
-    constexpr unsigned C = 1;
-    constexpr unsigned HI = 18;
-    constexpr unsigned WI = 18;
-    constexpr unsigned K = 1;
-    constexpr unsigned S = 3;
-    constexpr unsigned R = 3;
-#elif 0
-    constexpr unsigned N  = 1;
-    constexpr unsigned C  = 1;
-    constexpr unsigned HI = 4;
-    constexpr unsigned WI = 4;
-    constexpr unsigned K  = 1;
-    constexpr unsigned S  = 3;
-    constexpr unsigned R  = 3;
-#elif 0
-    constexpr unsigned N  = 2;
-    constexpr unsigned C  = 3;
-    constexpr unsigned HI = 130;
-    constexpr unsigned WI = 130;
-    constexpr unsigned K  = 5;
-    constexpr unsigned S  = 3;
-    constexpr unsigned R  = 3;
-#elif 0
-    constexpr unsigned N  = 3;
-    constexpr unsigned C  = 16;
-    constexpr unsigned HI = 130;
-    constexpr unsigned WI = 130;
-    constexpr unsigned K  = 4;
+    constexpr unsigned N  = 64;
+    constexpr unsigned C  = 64;
+    constexpr unsigned HI = 66;
+    constexpr unsigned WI = 66;
+    constexpr unsigned K  = 64;
     constexpr unsigned S  = 3;
     constexpr unsigned R  = 3;
 #endif
@@ -397,7 +381,7 @@ int main()
     std::size_t num_thread = std::thread::hardware_concurrency();
     in.GenerateTensorValue(GeneratorTensor_1{}, num_thread);
     wei.GenerateTensorValue(GeneratorTensor_1{}, num_thread);
-#elif 0
+#elif 1
     std::size_t num_thread = std::thread::hardware_concurrency();
     in.GenerateTensorValue(GeneratorTensor_2{-5, 5}, num_thread);
     wei.GenerateTensorValue(GeneratorTensor_2{-5, 5}, num_thread);
@@ -412,7 +396,7 @@ int main()
 #endif
     }
 
-#if 0
+#if 1
     host_winograd_3x3_convolution(in, wei, out_host);
     check_error(out_host, out_device);
 #elif 0
diff --git a/driver/device_direct_convolution_1.cuh b/driver/device_direct_convolution_1.cuh
index 95b10c3a61..fbd1b98d41 100644
--- a/driver/device_direct_convolution_1.cuh
+++ b/driver/device_direct_convolution_1.cuh
@@ -21,9 +21,11 @@ void device_direct_convolution_1(
     constexpr auto I2 = Number<2>{};
     constexpr auto I3 = Number<3>{};
 
-    constexpr auto in_desc          = InDesc{};
-    constexpr auto wei_desc         = WeiDesc{};
-    constexpr auto out_desc         = OutDesc{};
+    constexpr auto in_desc  = InDesc{};
+    constexpr auto wei_desc = WeiDesc{};
+    constexpr auto out_desc = OutDesc{};
+
+#if 0
     constexpr unsigned OutTileSizeH = 2;
     constexpr unsigned OutTileSizeW = 2;
     constexpr unsigned NPerBlock    = 2;
@@ -37,6 +39,21 @@ void device_direct_convolution_1(
     constexpr unsigned CPerThread = 2;
 
     constexpr unsigned BlockSize = 128;
+#elif 1
+    constexpr unsigned OutTileSizeH = 2;
+    constexpr unsigned OutTileSizeW = 2;
+    constexpr unsigned NPerBlock    = 2;
+    constexpr unsigned KPerBlock    = 16;
+    constexpr unsigned CPerBlock    = 2;
+    constexpr unsigned YPerBlock    = 2;
+    constexpr unsigned XPerBlock    = 27;
+
+    constexpr unsigned NPerThread = 2;
+    constexpr unsigned KPerThread = 4;
+    constexpr unsigned CPerThread = 2;
+
+    constexpr unsigned BlockSize = 216;
+#endif
 
     constexpr unsigned GridSize = (out_desc.GetLength(I0) / NPerBlock) *
                                   (out_desc.GetLength(I1) / KPerBlock) *
diff --git a/driver/device_direct_convolution_2.cuh b/driver/device_direct_convolution_2.cuh
index f37af98086..5c08870a26 100644
--- a/driver/device_direct_convolution_2.cuh
+++ b/driver/device_direct_convolution_2.cuh
@@ -21,9 +21,11 @@ void device_direct_convolution_2(
     constexpr auto I2 = Number<2>{};
     constexpr auto I3 = Number<3>{};
 
-    constexpr auto in_desc          = InDesc{};
-    constexpr auto wei_desc         = WeiDesc{};
-    constexpr auto out_desc         = OutDesc{};
+    constexpr auto in_desc  = InDesc{};
+    constexpr auto wei_desc = WeiDesc{};
+    constexpr auto out_desc = OutDesc{};
+
+#if 0
     constexpr unsigned OutTileSizeH = 2;
     constexpr unsigned OutTileSizeW = 2;
     constexpr unsigned NPerBlock    = 2;
@@ -37,6 +39,35 @@ void device_direct_convolution_2(
     constexpr unsigned CPerThread = 2;
 
     constexpr unsigned BlockSize = 128;
+#elif 1
+    constexpr unsigned OutTileSizeH = 2;
+    constexpr unsigned OutTileSizeW = 2;
+    constexpr unsigned NPerBlock    = 2;
+    constexpr unsigned KPerBlock    = 32;
+    constexpr unsigned CPerBlock    = 4;
+    constexpr unsigned YPerBlock    = 1;
+    constexpr unsigned XPerBlock    = 27;
+
+    constexpr unsigned NPerThread = 2;
+    constexpr unsigned KPerThread = 4;
+    constexpr unsigned CPerThread = 2;
+
+    constexpr unsigned BlockSize = 216;
+#elif 1
+    constexpr unsigned OutTileSizeH = 2;
+    constexpr unsigned OutTileSizeW = 2;
+    constexpr unsigned NPerBlock    = 2;
+    constexpr unsigned KPerBlock    = 32;
+    constexpr unsigned CPerBlock    = 4;
+    constexpr unsigned YPerBlock    = 1;
+    constexpr unsigned XPerBlock    = 32;
+
+    constexpr unsigned NPerThread = 2;
+    constexpr unsigned KPerThread = 4;
+    constexpr unsigned CPerThread = 2;
+
+    constexpr unsigned BlockSize = 256;
+#endif
 
     constexpr unsigned GridSize = (out_desc.GetLength(I0) / NPerBlock) *
                                   (out_desc.GetLength(I1) / KPerBlock) *