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_r388083204
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File path: src/c_api/c_api.cc
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@@ -177,10 +177,39 @@ void CustomFComputeDispatcher(const std::string op_name,
return static_cast<void*>((*gpualloc)(size));
};
+ // MXNet random number generator lambda to be invoked by custom library
+ // custom library will use gpu rng whenever possible
+ auto rng_caller = [&](RandGenType rand_type, int seed) {
+#if MXNET_USE_CUDA
Review comment:
thanks for the timely review. we can let user pass in a "cpu" or "gpu"
string to decide it, just like the forward/backward function
Also I am just wondering if we should make a default choice of device?
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