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List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Guix Devel Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-Country: US ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=yhetil.org; s=key1; t=1637806977; h=from:from:sender:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:list-id:list-help: list-unsubscribe:list-subscribe:list-post:dkim-signature; bh=MR69QeWoIB6KIWku5JQF+zrUN24FYmXz9Yvy3A0hoDI=; b=Gw7aHc/IEmLfHAhlA/Kfw/23MsMeB1liiavFe2bQkrZ9PWFlF2DNaoUa0RCwEreJ1lFAtb a8wP9X3P0jL/T8FC0/omPkeHhL2mrRRhjvaTwlcQAhx9byvehInjoaOaVCrODwRwnv/F36 mA3eyC8hW4MBsNvKH+rvH8vHalo/FCPT+fvohow7WS+keddKkGJFhA7kkZxXAHATscI//c 9xxZ+F3jadsseOTGx8dfZ7uybchMvj67Tqgshs+9Kbvi1EDqtkxi4iD0IDik8Hy+6SRfDc ma59mpy1HTK0dfOUynKxIr4KWu5TpChLgvuFdOU4AsA/xCWhqWA+DkvfXDlk7g== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1637806977; a=rsa-sha256; cv=none; b=g5A6ZJK4VIfb4GNHVZphcyKkle85ZMYnuz0Yv+Dtj2V5zv7D8azTmUftj6pNB61+jijQoq D6yqLZVEUpuKLMFtPG17kFBXYLaJLML5yrJW9kF5NDwGCQLIx688QerxBLBDOE4cTpx0IK 1n+HOfCfl7jkYfyRjDinWw4/TaV1vEygCE4pappeyYE8vEg3lXyz5t6c+MWfJAVfaVOk0T 4GeacBUa6JOggLgGTr2ScEjwryFXhO7/aLsPDn/JyrUmSAFtD9+WQJZWdJtpR2YvA7exwy 8FpFRbkck4TcZOxlwALLJVfKeS7NqCa+JassddeSfVvjyP2hmT+BxcN4uBYWuA== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20210112 header.b=VfECVgdo; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Spam-Score: -1.79 Authentication-Results: aspmx1.migadu.com; dkim=fail ("headers rsa verify failed") header.d=gmail.com header.s=20210112 header.b=VfECVgdo; dmarc=fail reason="SPF not aligned (relaxed)" header.from=gmail.com (policy=none); spf=pass (aspmx1.migadu.com: domain of "guix-devel-bounces+larch=yhetil.org@gnu.org" designates 209.51.188.17 as permitted sender) smtp.mailfrom="guix-devel-bounces+larch=yhetil.org@gnu.org" X-Migadu-Queue-Id: AFFAB2F5EB X-Spam-Score: -1.79 X-Migadu-Scanner: scn0.migadu.com X-TUID: KA4r1Ou5CKEt Hi, On Mon, 22 Nov 2021 at 15:13, Maxim Cournoyer w= rote: > zimoun writes: >> Julia is annoying, Because the test suite sometimes passes, sometimes >> not. Well, I am not even sure it is the same part that fails. I >> notice that "guix build julia --without-tests=3Djulia" then "guix build >> julia" tends to works. :-) >> >> Any idea to debug this? > > No idea how to debug this, but when faced with nondeterministic tests, > here's how I proceed: > > 1. Report them upstream. > 2. Disable the problematic tests. You may need to disable a whole test s= uite of > similarly faulted tests, if they all behave the same. After this hacking day, Julia builds deterministically* on core-updates-frozen. Along the way, now the test suite runs in parallel which reduces a lot the feedback loop. :-) And a variant of the current patch of julia source is upstream PR. *deterministically: at least on 2 machines. ;-) One or two failing tests randomly failing should be investigated and probably reported upstream. The test suite of julia-* packages supports also (more or less) some parallelism. From my understanding, the limitation comes from the script 'test/runtests.jl' from each package; each implements more or less some parallelism. Now, the environment variable JULIA_CPU_THREADS is set but Julia does not always honor it as its doc specifies =E2=80=93 se= e the patch fixing the parallelism of Julia test suite ;-). Therefore, the test suite of each package is launched with '--procs=3D(parallel-job-count)' and Julia exploits at best the available workers. I am currently rebuilding all the julia-* packages. It is high probable some are now broken. But it appears to me not a blocker for the merge. On a side note, Julia is not currently reproducible [1] and 'julia-build-system' neither [2]. Therefore, probable non-reproducible build introduced by parallelism is currently not the point, IMHO. Thanks Maxim for the help and the good vibes to tackle that. Cheers, simon 1: 2: