message: fix ell's advanced spmv
diff: @@ -217,7 +217,7 @@ void advanced_spmv(std::shared_ptr<const CudaExecutor> exec,
  }
  }
  const dim3 block_size(default_block_size, 1, 1);
  - const dim3 grid_size(ceildiv(a->get_size()[0], block_size.x),
  + const dim3 grid_size(ceildiv(nrows * subwarp_size, block_size.x),
  b->get_size()[1], 1);
  switch (subwarp_size) {
  