Date: Sun, 28 Aug 2016 17:16:35 +0200 From: =?UTF-8?Q?Fernando_Herrero_Carr=C3=B3n?= <elferdo@gmail.com> To: Dimitry Andric <dim@freebsd.org> Cc: "K. Macy" <kmacy@freebsd.org>, freebsd-stable <freebsd-stable@freebsd.org>, Johannes Dieterich <dieterich.joh@gmail.com>, Lars Engels <lars.engels@0x20.net>, Erich Dollansky <erichsfreebsdlist@alogt.com>, Andrea Brancatelli <abrancatelli@schema31.it>, Kubilay Kocak <koobs@freebsd.org> Subject: Re: Benchmarks results for FreeBSD 11 Message-ID: <CAMwkeZxevR8UR9Vn2_5F7KR%2BTR5a5EdSbv=d8qkU%2BhunTv2zDQ@mail.gmail.com> In-Reply-To: <79F32FFD-BBDF-4359-A4CB-C80A3FC59EAD@FreeBSD.org> References: <20160819073422.4292997b@X220.alogt.com> <af0fefab-69d7-f0a9-3d6d-4a9891d5a156@FreeBSD.org> <20160821144505.27c0f55d@X220.alogt.com> <827183a944ee4052649c152d65204444@schema31.it> <20160822101423.GF18643@e-new.0x20.net> <CAHM0Q_My2otDtVSzTiQMHE=ty%2B7kEBP%2BwfFofBvOzoz8ro%2B-sQ@mail.gmail.com> <79F32FFD-BBDF-4359-A4CB-C80A3FC59EAD@FreeBSD.org>
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El 28/8/2016 14:56, "Dimitry Andric" <dim@freebsd.org> escribi=C3=B3: > > On 28 Aug 2016, at 02:10, K. Macy <kmacy@freebsd.org> wrote: > > > >> The problem here is that Phoronix took a Beta version of FreeBSD 11. > >> Beta versions have a lot of debugging (malloc, invariants, witness) > >> options enabled which make it significantly slower than release > >> versions. This is even obviously when you run a Beta as a desktop. It > >> just feels much slower. > > > > > > I don't know what was going on in these particular tests, but in a > > more recent benchmarking run > > - https://www.phoronix.com/scan.php?page=3Darticle&item=3Dfreebsd11-clang-gcc= &num=3D1 > > - you're seeing the result of openmp being disabled in base. The clang > > maintainer for src refuses to include libomp as required for -fopenmp > > because nothing in base requires it. > > Come on, this is nonsense. I have indicated earlier that I would have > liked to import openmp into base, but this was shot down precisely for > that reason: nothing in base uses it. > > So for now, the solution is simply: install one of the llvm ports, and > use it. These have configuration setting to install every optional > component from the LLVM project. > > -Dimitry > How does the port infrastructure handle openmp-enabled ports (those with an openmp option) then? Is an omp-capable compiler automatically pulled in or is openmp ignored unless the port explicitely requests one from ports? Fernando
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