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Parallelism issues with Julia 1.12 #165

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@gottacatchenall

In Julia 1.12, Omniscape parallelism doesn't behave as expected. When running with e.g. julia -t 4, Omniscape fails when running by trying access an [N,M,5] array, where the array only has dimensions [N,M,4].

We (@tpoisot and I) think this is because Omniscape believes there are 5 available threads (or generally N+1 threads when N are available) because Julia 1.12 changed how the interactive thread is counted.

Happy to open a PR if this the correct diagnosis.

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