add support for withnvptx easyconfig parameter, to enable GPU offloading, in GCC easyblock #2235
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GCC supports offloading to NVidia GPUs via OpenMP and OpenACC. To allow this via the easyblock the following strategy is used: an iterative build with 3 steps: 0. build and install GCC as usual except adding --without-cuda-driver --enable-offload-targets=nvptx-none to configopts. 1. build nvptx-tools with this GCC, install in the same location 2. build and install GCC with target nvptx-none so it can compile NVPTX code. Thanks to https://gist.github.com/matthiasdiener/e318e7ed8815872e9d29feb3b9c8413f https://sources.debian.org/src/gcc-10/10.2.0-17/debian/rules2/ https://github.com/eth-cscs/production/blob/master/easybuild/easyconfigs/g/GCCcore/GCCcore-7.3.0-cuda-9.1-offload.eb for inspiration. Closes easybuilders#2232
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Test report by @boegel Overview of tested easyconfigs (in order)
Build succeeded for 5 out of 5 (5 easyconfigs in total) |
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Test report by @boegel Overview of tested easyconfigs (in order)
Build succeeded for 3 out of 3 (3 easyconfigs in total) |
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GCC supports offloading to NVidia GPUs via OpenMP and OpenACC.
To allow this via the easyblock the following strategy is used:
an iterative build with 3 steps:
0. build and install GCC as usual except adding --without-cuda-driver
--enable-offload-targets=nvptx-none to configopts.
NVPTX code.
Thanks to
https://gist.github.com/matthiasdiener/e318e7ed8815872e9d29feb3b9c8413f
https://sources.debian.org/src/gcc-10/10.2.0-17/debian/rules2/
https://github.com/eth-cscs/production/blob/master/easybuild/easyconfigs/g/GCCcore/GCCcore-7.3.0-cuda-9.1-offload.eb
for inspiration.
Closes #2232