Modifications with tile and unroll for GridMini #5
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This PR contains tile and unroll modifications to the OpenMP target loop on 137-140 in Benchmark_su3.cc.
It contains a version of manual tiling and unrolling and version with using the LLVM/clang OpenMP loop transformation directives 'tile' and 'unroll'.
The unroll factor and the tile size for both versions can be set through a #define at the top of Benchmark_su3.cc.
Note that the OpenMP loop transformations aren't available in other OpenMP C implementations, e.g., Cray-llvm. Also, the loop transformations haven't been added to LLVM/flang OpenMP though there are plans to in the future.