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shallow water benchmark fails if I run it with high core counts #659

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lslusarczyk opened this issue Nov 28, 2023 · 0 comments

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bug

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lslusarczyk commented Nov 28, 2023 •

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(on cpu)

Example with sycl version:

mpirun -n 112 ./shallow_water --sycl -f -t -n 1024
shallow_water: [...]/distributed-ranges/include/./dr/detail/sycl_utils.hpp:124: 
sycl::event dr::__detail::parallel_for(sycl::queue &, sycl::range<2>, Fn &&)
[Fn = (lambda at [...]/distributed-ranges/include/./dr/mhp/algorithms/md_for_each.hpp:142:29) &]:
Assertion `global[0] < max && global[1] < max' failed.

For 1024 problem size 48 cores is sufficient to reproduce. happens with non sycl build as well

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lslusarczyk added the bug label

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