message: needed a cudaDeviceSynchronize in the raw cuda variant -- otherwise timing was off, now RAJA cuda seems to be 10% faster
diff: @@ -398,6 +398,7 @@ void POLYBENCH_2MM::runKernel(VariantID vid)
  grid_size = RAJA_DIVIDE_CEILING_INT(m_ni * m_nl, block_size);
  polybench_2mm_cuda_2<<<grid_size,block_size>>>(tmp,A,B,C,D,alpha,beta,m_ni,m_nj,m_nk,m_nl);
  }
  + cudaDeviceSynchronize();
  stopTimer();
  POLYBENCH_2MM_TEARDOWN_CUDA;
  break;
  