From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp12.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms0.migadu.com with LMTPS id 0GK3GuKe+2F1sgAAgWs5BA (envelope-from ) for ; Thu, 03 Feb 2022 10:22:42 +0100 Received: from aspmx1.migadu.com ([2001:41d0:8:6d80::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp12.migadu.com with LMTPS id WGGOF+Ke+2HFmwAAauVa8A (envelope-from ) for ; Thu, 03 Feb 2022 10:22:42 +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 03CEF23D87 for ; Thu, 3 Feb 2022 10:22:42 +0100 (CET) Received: from localhost ([::1]:49080 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nFYK9-0003OS-1H for larch@yhetil.org; Thu, 03 Feb 2022 04:22:41 -0500 Received: from eggs.gnu.org ([209.51.188.92]:39474) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nFYJA-0003NY-9M for guix-devel@gnu.org; Thu, 03 Feb 2022 04:21:40 -0500 Received: from [2a02:1800:110:4::f00:18] (port=47976 helo=michel.telenet-ops.be) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nFYJ3-0004Y3-19 for guix-devel@gnu.org; Thu, 03 Feb 2022 04:21:39 -0500 Received: from ptr-bvsjgyhxw7psv60dyze.18120a2.ip6.access.telenet.be ([IPv6:2a02:1811:8c09:9d00:3c5f:2eff:feb0:ba5a]) by michel.telenet-ops.be with bizsmtp id qZMK260044UW6Th06ZMKKq; Thu, 03 Feb 2022 10:21:19 +0100 Message-ID: Subject: Re: weird OpenBLAS time-machine From: Maxime Devos To: zimoun , guix-devel@gnu.org Date: Thu, 03 Feb 2022 10:21:13 +0100 In-Reply-To: <86r18k1ylf.fsf@gmail.com> References: <87k0ed9pb2.fsf@gmail.com> <86r18k1ylf.fsf@gmail.com> Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-Gv/F9r8BXbBJqvaoEBxr" User-Agent: Evolution 3.38.3-1 MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=telenet.be; s=r22; t=1643880079; bh=buupFP2pm4qAmdhQOgaNI5TycywkhoMYmxh8V1D6Zr4=; h=Subject:From:To:Cc:Date:In-Reply-To:References; b=Ukjjsb4dXIIGIkeky4p6cmumxWL7viCfrY/lqh3ZJjovjnMCiYIhF41G/ir4syujB pBYEvbaE0F0HEPAEJ0yahfK8raz5blOI0ye1Y2Y+SEnkeYoZtoDIIVX1qBBezYln0b eaKJTvgmEre0hMFLx0Sl91Zh91KsNjhFRhYCnIKX8YaN2W2GRlOKrOLMnL7p0qBa3y cbrrQKsHsQWYScXwnnZyNBp60dMXTh7CtPFiLROWOSfk4XCJzhjT+lV6UnbymIkmAA KnDpXgQ2yCIqtONWAtdSc7cFc4Bhm4T82VDhXzkDbaCs6TqR0nseE2OG9S0BOp55BS dKr5FsaMsSQdg== X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a02:1800:110:4::f00:18 (failed) Received-SPF: pass client-ip=2a02:1800:110:4::f00:18; envelope-from=maximedevos@telenet.be; helo=michel.telenet-ops.be X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, 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: maxim.cournoyer@gmail.com 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=1643880162; 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:in-reply-to:in-reply-to: references:references:list-id:list-help:list-unsubscribe: list-subscribe:list-post:dkim-signature; bh=buupFP2pm4qAmdhQOgaNI5TycywkhoMYmxh8V1D6Zr4=; b=G4xp+cLVpIrhcqQsUJk7aZurgsx8BAbNDIZvdmm13xE1wSO+v9GGLn61PDOPNdO6GU+RV+ PmWedBRejDVZ480StX/4Ndk38dEkdOD6+9dwbDleB3LDsFRczQt2RwnjZE4xTu75CLwumx VotVfRKet5EXAFKKXU6MzV+qO72lpQdcoFOWiyMPDsqShcHaYAKylm5lAnI9g+yYPa5bHu Wg74jpkDRWoYfrz6rijF2GpiD5a39+eDNfmAVy7AjMNz3y7V9CEnC+bsINjxprk2WG9qjw ZqyUPoEsHS4zR6/9dkYyuaYlEzV0+bmQw18XK+KZh71YpSbfkX73OI/fU2pZcQ== ARC-Seal: i=1; s=key1; d=yhetil.org; t=1643880162; a=rsa-sha256; cv=none; b=r4ensNpIRroMhRhar7vBCoQ0+lVBR0olusvAwDbeH678QtrgZcVXFqR+XWH834lNBW3iFt vUYZwAEIVknDP9zEXa+/XJI/jelnH9XkeXa9qaKKT4+rrQcGYlFh/kToDxcvVODxZY+cv6 QveiXhemcT02pMawwChAQp90X7MhgivCKZF5ma0xKP7TS9vzDma9RKlKVUMlkEyQYj6omr VKi7nOhQkPyN9lAE5SC7+HtJxrrJFCDNXuQLco87AkVJDUQI2hyWqvmrm7uWrmE+lgZe/Q JqNAUwtZZLqkdWdJHS5P/xBaXW2L2UabHlwcPSY3qaIRFsahmM4ydNqrfjTc3g== ARC-Authentication-Results: i=1; aspmx1.migadu.com; dkim=pass header.d=telenet.be header.s=r22 header.b=Ukjjsb4d; dmarc=pass (policy=none) header.from=telenet.be; 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: -6.53 Authentication-Results: aspmx1.migadu.com; dkim=pass header.d=telenet.be header.s=r22 header.b=Ukjjsb4d; dmarc=pass (policy=none) header.from=telenet.be; 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: 03CEF23D87 X-Spam-Score: -6.53 X-Migadu-Scanner: scn1.migadu.com X-TUID: 0keQ4OBFmeya --=-Gv/F9r8BXbBJqvaoEBxr Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable 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. >=20 > Well, I probably ran inside one terminal =E2=80=9Cguix time-machine > --commit=3DXXXX -- help=E2=80=9D where XXXX a commit with openblas@0.3.9;= and in > the same time inside another terminal, =E2=80=9Cguix time-machine > --commit=3D4b1538e6ef -- help=E2=80=9D.=C2=A0 Depending on =E2=80=9Cthe s= ame time=E2=80=9D, the state > of the checkout > ~/.cache/guix/checkouts/pjmkglp4t7znuugeurpurzikxq3tnlaywmisyr27shj7apsna= lwq > used by the time-machine at 4b1538e6ef was the state for the commit > XXXX. >=20 > Then, all is messed! 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". Greetings, Maxime --=-Gv/F9r8BXbBJqvaoEBxr Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part Content-Transfer-Encoding: 7bit -----BEGIN PGP SIGNATURE----- iI0EABYKADUWIQTB8z7iDFKP233XAR9J4+4iGRcl7gUCYfueiRccbWF4aW1lZGV2 b3NAdGVsZW5ldC5iZQAKCRBJ4+4iGRcl7ow7AP9SWLWOhZcvpgbatX/R6JSWLV9B nGsfmOJ8zjCagiQqwgEA5e6/JnGx3diJYdIjrjos63jzJhkGd/AlrgDRYLeg8gM= =XeJB -----END PGP SIGNATURE----- --=-Gv/F9r8BXbBJqvaoEBxr--