Threads per segment in Light CSR can be set by the user.

src/Benchmarks/SpMV/spmv.h

src/TNL/Algorithms/Segments/CSR.h

src/TNL/Algorithms/Segments/CSRView.h

src/TNL/Algorithms/Segments/Kernels/CSRLightKernel.h

src/TNL/Algorithms/Segments/Kernels/CSRLightKernel.hpp

src/TNL/Matrices/SparseMatrix.hpp