From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms0.migadu.com with LMTPS id ANwEFXeH/mEhaAEAgWs5BA (envelope-from ) for ; Sat, 05 Feb 2022 15:19:35 +0100 Received: from aspmx1.migadu.com ([2001:41d0:2:bcc0::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id WHBxEXeH/mFKcgAAauVa8A (envelope-from ) for ; Sat, 05 Feb 2022 15:19:35 +0100 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id E632F34CE7 for ; Sat, 5 Feb 2022 15:19:34 +0100 (CET) Received: from localhost ([::1]:40486 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nGLuY-0008I8-4B for larch@yhetil.org; Sat, 05 Feb 2022 09:19:34 -0500 Received: from eggs.gnu.org ([209.51.188.92]:50236) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nGLuG-0008I0-UV for guix-devel@gnu.org; Sat, 05 Feb 2022 09:19:16 -0500 Received: from [2a0c:e300::1] (port=36314 helo=hera.aquilenet.fr) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nGLuB-0004IU-Ib for guix-devel@gnu.org; Sat, 05 Feb 2022 09:19:16 -0500 Received: from localhost (localhost [127.0.0.1]) by hera.aquilenet.fr (Postfix) with ESMTP id CCC5A9DD; Sat, 5 Feb 2022 15:19:08 +0100 (CET) X-Virus-Scanned: Debian amavisd-new at aquilenet.fr Received: from hera.aquilenet.fr ([127.0.0.1]) by localhost (hera.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id teqholhlSZ1y; Sat, 5 Feb 2022 15:19:08 +0100 (CET) Received: from ribbon (91-160-117-201.subs.proxad.net [91.160.117.201]) by hera.aquilenet.fr (Postfix) with ESMTPSA id 9252061; Sat, 5 Feb 2022 15:19:07 +0100 (CET) From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: Maxime Devos Subject: Re: weird OpenBLAS time-machine References: <87k0ed9pb2.fsf@gmail.com> <86r18k1ylf.fsf@gmail.com> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 17 =?utf-8?Q?Pluvi=C3=B4se?= an 230 de la =?utf-8?Q?R=C3=A9volution?= X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Sat, 05 Feb 2022 15:19:07 +0100 In-Reply-To: (Maxime Devos's message of "Thu, 03 Feb 2022 10:21:13 +0100") Message-ID: <87pmo1gzvo.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Spamd-Bar: ++ X-Rspamd-Server: hera X-Rspamd-Queue-Id: CCC5A9DD X-Spamd-Result: default: False [2.11 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FREEMAIL_CC(0.00)[gmail.com,gnu.org]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TO_MATCH_ENVRCPT_ALL(0.00)[]; TAGGED_RCPT(0.00)[]; MIME_GOOD(-0.10)[text/plain]; TO_DN_SOME(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; R_MIXED_CHARSET(0.71)[subject]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; SUSPICIOUS_RECIPS(1.50)[] X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a0c:e300::1 (failed) Received-SPF: softfail client-ip=2a0c:e300::1; envelope-from=ludo@gnu.org; helo=hera.aquilenet.fr X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, RDNS_NONE=0.793, SPF_HELO_PASS=-0.001, SPF_SOFTFAIL=0.665, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: guix-devel@gnu.org, maxim.cournoyer@gmail.com, zimoun 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=1644070774; 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; bh=2kb1bsweopSRHUWI9GthXj2iFZjBtWQOwf1NUeqC5ZQ=; b=CHc1RL8nJOATJ0GsflyVz0nEJ05idoL8XcwAg/lnPhzKciWcjxsyG15ENcub2sNZ9HMSUN aX3SuUqGvm/GHSfT3FCPfO8UU41ZdVhKk6C9iPGEWA86Xj1eBPzu3nPlVkznkPujZtL12L lPW7ksfPewVN6jsCr1c0m7pzaV3CRrpLeb5X8FeurNB2cjtFkG+HnkdMtoIw8G8dUp0kij 2NJWX/cujKKdQNogkiPdPcweRDNe8XrLxeg6LjdERSuvEofq6cSBHTO5WhWZUFte59d8C0 2reErcNc4SBqC7cb0Wchitv9bKex5f9AEUjSEZXST/sLwd8OIG6W/0+XWWzXBQ== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1644070774; a=rsa-sha256; cv=none; b=igOXTSk5pH9aS2PxmeKaPwGEJdUqMB7zSMur6KDEId8dY/etqrOCylPzJDqK7MxcRHok1K HrIDamTK9rUAQfLejnE3lyihE1iDpMsny2kkH6sFddqFdKO8rSTe5zbeP+EqcpZy6OFBKB P0rwMaAKiMtKFVtaIqK+BWymffob9OlZznxbEToh0obMBlK07BGjJuk61uUIvopA7/Vh25 Pih0Gb9i8g99Cw3fe/zeSrHQa8U3NdjjeD1sLyqTvT6TOp9FInEpIP9+SeQQmTv8oarXFN 8Jx18xs4zaCUcTjzVt/nb/I1MZU+Yy85k+UtDm7F7fR1255GPBhHQZ4xFfJGag== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; 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: -2.13 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; 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: E632F34CE7 X-Spam-Score: -2.13 X-Migadu-Scanner: scn1.migadu.com X-TUID: PW0C+wCrNI7A Hi, Maxime Devos skribis: > zimoun schreef op do 03-02-2022 om 03:19 [+0100]: >> The issue is because concurrency.=C2=A0 If two time-machines are run >> concurrently, they both update ~/.cache/guix/checkouts/ and the end >> result is hard to predict. Ah, glad you found out the culprit! > FWIW it's a known issue but I can't find it on issues.guix.gnu.org. > The (unimplemented) fix is to use worktrees, or don't checkout and use > the libgit2 / (guix git) equivalent of > "git show 46fc72b2bfee2a30a3c3f3320e7d84b4b2fd646e some-file". Hmm I cannot find it either. But yeah, probably better than worktrees would be reading blobs directly off Git. Thanks, Ludo=E2=80=99.