For info: TARGET flags for clang-based CCE for OpenMP target

UoB-HPC / BabelStream

STREAM, for lots of devices written in many programming models

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Open tomdeakin opened 4 years ago

tomdeakin commented 4 years ago

To target NVIDIA with OpenMP with the clang-based CCE, we need to do something like this:

make COMPILER=CRAY TARGET=NVIDIA EXTRA_FLAGS="-fopenmp -fopenmp-targets=nvptx64 -Xopenmp-target -march=sm_60"

tomdeakin commented 4 years ago

it also seems to work with just -fopenmp and the right craype-accel module loaded
plain LLVM also works with -fopenmp-targets=nvptx64. CCE won't work with the longer -fopenmp-targets=nvptx64-nvidia-cuda