[GitHub] sxjscience commented on issue #3257: Multiple `ResourceRequest::kTempSpace` in a single operator

[gi...@git.apache.org]

sxjscience commented on issue #3257: Multiple `ResourceRequest::kTempSpace` in a single operator
URL: https://github.com/apache/incubator-mxnet/issues/3257#issuecomment-332723522
 
 
   We can achieve the feature by initialising a workspace with `char` type and cast it to get the other types.
   For example:
   ```c++
   // The following example allocates space for both a array with int type and an array with real_t type
   workspace_size =  sizeof(int) * int_array_size + sizeof(real_t) * float_array_size;
   workspace = resource.get_space_typed<xpu, 1, char>(Shape1(workspace_size), s);
   char* ptr = workspace.dptr_;
   int_array = Tensor<xpu, 1, int>(reinterpret_cast<int*>(ptr), Shape1(int_array_size), s);
   ptr += sizeof(int) * int_array_size;
   float_array = Tensor<xpu, 1, real_t>(reinterpret_cast<real_t*>(ptr), Shape1(float_array_size), s);
   ```
 
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