piiswrong commented on a change in pull request #8566: optimize broadcast
URL: https://github.com/apache/incubator-mxnet/pull/8566#discussion_r150332277
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File path: src/operator/mxnet_op.h
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@@ -345,6 +394,13 @@ __global__ void mxnet_generic_kernel(int N, Args... args)
{
}
}
+template<typename OP, typename ...Args>
+__global__ void mxnet_generic_kernel_ex(int N, Args... args) {
+ for (int i = blockIdx.x * blockDim.x + threadIdx.x; i < N; i += blockDim.x *
gridDim.x) {
+ OP::Map(i, 1, args...);
Review comment:
For GPU the fastest way is to add a step. Each thread work on N elements
separated by step
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