rondogency commented on a change in pull request #17762: Custom Operator Random Number Generator Support URL: https://github.com/apache/incubator-mxnet/pull/17762#discussion_r399085026
########## File path: example/extensions/lib_custom_op/relu_lib.cu ########## @@ -180,6 +182,75 @@ REGISTER_OP(my_state_relu) .setCreateOpState(createOpStateCPU, "cpu") .setCreateOpState(createOpStateGPU, "gpu"); + + +/* ------------------------ Below is noisy relu operator example ---------------------*/ + +#include <curand_kernel.h> +#include <random> + +#define NumRandomPerThread 64 // mxnet recommended random numbers generated per thread + +__global__ void noisy_relu_gpu_forward(float *out, float *in, int64_t N, void *states, int step) { + int tid = blockIdx.x * blockDim.x + threadIdx.x; + curandStatePhilox4_32_10_t* global_states = (curandStatePhilox4_32_10_t*)states; + curandStatePhilox4_32_10_t thread_state = global_states[tid]; + + int start = tid * step; + int end = start + step; + for (int i=start; i<end && i<N; ++i) { + float noise = curand_normal(&thread_state); + out[i] = in[i] + noise > 0 ? in[i] + noise : 0; Review comment: Added comments with details ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org With regards, Apache Git Services