Gpu pingpong test#556

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therault wants to merge 3 commits intoICLDisco:masterfrom

therault:gpu_pingpong_test

Commits on Nov 6, 2023

Add a simple ping-pong test for GPU accelerators
therault
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Commits on Nov 7, 2023

Adapt spack list to current runners
therault
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According to https://github.com/spack/spack/issues/29350 llvm (required by hip) can only compile if we install binutils+headers?
therault
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