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Parallelize position pickling #9619

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merged 5 commits into from Aug 25, 2020

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odersky
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@odersky odersky commented Aug 21, 2020

Run position pickling in parallel with other middle-end transformations. Only force in backend.

Run position pickling and byte array assembly in a separate task
# Conflicts:
#	compiler/src/dotty/tools/dotc/transform/Pickler.scala
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odersky commented Aug 21, 2020

test performance please

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performance test scheduled: 16 job(s) in queue, 1 running.

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Performance test finished successfully:

Visit http://dotty-bench.epfl.ch/9619/ to see the changes.

Benchmarks is based on merging with master (387c562)

pickled
}(using ExecutionContext.global)
def force(): Array[Byte] = Await.result(pickledF, Duration.Inf)
if ctx.settings.YtestPickler.value || ctx.mode.is(Mode.Interactive) then force()
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I tried removing the special-case for Interactive mode here and the CI passed: https://github.com/smarter/dotty/actions/runs/219013322, are you still able to reproduce the issue you saw that lead to that change?

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If the CI passes I assume it's OK, and we can do without the restriction.

@odersky odersky merged commit 0246f72 into scala:master Aug 25, 2020
@odersky odersky deleted the parallel-position-pickler branch August 25, 2020 13:22
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nicolasstucki commented Aug 26, 2020

@oderky it looks like this PR broke master. There is some issue when running the REPL tests.
https://github.com/lampepfl/dotty/runs/1029579877?check_suite_focus=true#step:10:967

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smarter added a commit that referenced this pull request Aug 26, 2020
This disables #9619 as it lead to CI failures.
smarter added a commit that referenced this pull request Aug 26, 2020
This disables #9619 as it lead to CI failures.
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5 participants