Investigate GC on long runs #75

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a2ray opened this issue Oct 7, 2024 · 1 comment

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a2ray commented Oct 7, 2024 •

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upto 8,320 cpus for 2-5 hours works ok, but less workers for more time may still have GC issues.

Look at

https://discourse.julialang.org/t/garbage-collection-not-aggressive-enough-on-slurm-cluster
or lazy addprocs in Memory leak for lazy worker to worker connections JuliaLang/julia#28887
https://itensor.github.io/ITensors.jl/dev/faq/HPC.html
heap_size_hint with -exeflags on workers Interaction between addprocs and --heap-size-hint JuliaLang/julia#50673

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a2ray commented Mar 26, 2025 •

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And also,

it gets worse with some v1.11 releases of julia see here on discourse.
backport fix at gc: improve mallocarrays locality JuliaLang/julia#56801

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