diff --git a/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r1_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp b/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r1_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp
index 803f6b1b60..b14720eb88 100644
--- a/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r1_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp
+++ b/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r1_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp
@@ -112,7 +112,7 @@ struct GridwiseConvolutionImplicitGemm_v4r1_nchw_kcyx_nkhw_padded_lds_double_buf
                       "be violated");
 
         // divide block work by [K, B]
-        static_assert(K % KPerBlock == 0 && B % BPerBlock == 0 && E % EPerBlock == 0,
+        static_assert(K % KPerBlock == 0 && B % BPerBlock == 0 && E % (2 * EPerBlock) == 0,
                       "wrong! cannot divide work evenly among block");
 
         constexpr index_t KBlockWork = K / KPerBlock;
diff --git a/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp b/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp
index 43145950e3..2172751e6e 100644
--- a/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp
+++ b/composable_kernel/include/kernel_algorithm/gridwise_convolution_implicit_gemm_v4r4_nchw_kcyx_nkhw_padded_lds_double_buffer.hpp
@@ -96,7 +96,7 @@ struct GridwiseConvolutionImplicitGemm_v4r4_nchw_kcyx_nkhw_padded_lds_double_buf
                       "be violated");
 
         // divide block work by [K, B]
-        static_assert(K % KPerBlock == 0 && B % BPerBlock == 0 && E % EPerBlock == 0,
+        static_assert(K % KPerBlock == 0 && B % BPerBlock == 0 && E % (2 * EPerBlock) == 0,
                       "wrong! cannot divide work evenly among block");
 
         constexpr index_t KBlockWork = K / KPerBlock;
diff --git a/driver/src/driver.cpp b/driver/src/driver.cpp
index caecfce7fa..710009c72f 100644
--- a/driver/src/driver.cpp
+++ b/driver/src/driver.cpp
@@ -75,11 +75,11 @@ int main(int argc, char* argv[])
     using namespace ck;
 
 #if 1
-    constexpr index_t N  = 256;
-    constexpr index_t C  = 64;
+    constexpr index_t N  = 512;
+    constexpr index_t C  = 16;
     constexpr index_t HI = 17;
     constexpr index_t WI = 17;
-    constexpr index_t K  = 256;
+    constexpr index_t K  = 512;
     constexpr index_t Y  = 17;
     constexpr index_t X  = 17;