Added comment to Adaptive CSR kernel about finetunning of CUDA block size...

Added comment to Adaptive CSR kernel about finetunning of CUDA block size depending on the size of Value type.

src/TNL/Algorithms/Segments/details/CSRAdaptiveKernelParameters.h

@@ -15,6 +15,8 @@ namespace TNL {
       namespace Segments {
          namespace details {
 
+// This can be used for tunning the number of CUDA threads per block depending on the size of Value
+// TODO: Perform some tests
 static constexpr int CSRAdaptiveKernelParametersCudaBlockSizes[] = { 256, 256, 256, 256, 256, 256 };
 
 template< int SizeOfValue = 1,