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#include "caffe2/core/context_gpu.h"
#include "caffe2/operators/replace_nan_op.h"
namespace caffe2 {
namespace {
template <typename T>
__global__ void
replace_nan_kernel(const T value, const int64_t size, const T* X, T* Y) {
CUDA_1D_KERNEL_LOOP(i, size) {
if (isnan(X[i])) {
Y[i] = value;
} else {
Y[i] = X[i];
}
}
}
} // namespace
template <>
template <typename T>
void ReplaceNaNOp<CUDAContext>::ReplaceNaN(
const T& value,
const int64_t size,
const T* X,
T* Y) {
replace_nan_kernel<<<
CAFFE_GET_BLOCKS(size),
CAFFE_CUDA_NUM_THREADS,
0,
context_.cuda_stream()>>>(value, size, X, Y);
}
REGISTER_CUDA_OPERATOR(ReplaceNaN, ReplaceNaNOp<CUDAContext>);
} // namespace caffe2
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