From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham autolearn_force=no version=3.4.4 X-Google-Thread: a07f3367d7,222ed89632aabb93 X-Google-Attributes: gida07f3367d7,public,usenet X-Google-NewGroupId: yes X-Google-Language: ENGLISH,ASCII-7-bit Received: by 10.205.130.14 with SMTP id hk14mr3248339bkc.5.1342044544766; Wed, 11 Jul 2012 15:09:04 -0700 (PDT) Path: m12ni31bkm.0!nntp.google.com!news2.google.com!goblin1!goblin.stu.neva.ru!eternal-september.org!feeder.eternal-september.org!mx04.eternal-september.org!.POSTED!not-for-mail From: Simon Wright Newsgroups: comp.lang.ada Subject: Re: Free AMD Core Math Library (BLAS/LAPACK) + Ada Date: Wed, 11 Jul 2012 20:30:45 +0100 Organization: A noiseless patient Spider Message-ID: References: <41b74e89-f112-4791-883d-236080652dbf@googlegroups.com> <2565f27a-48d1-4000-978d-c3946154ea32@googlegroups.com> <212027fd-e3a3-45cc-b594-df6a4ae96138@googlegroups.com> <0c159836-b4b9-4861-85cd-e3e61e94f8bc@googlegroups.com> <99901f55-e61a-4808-a442-1a62e625cd2e@googlegroups.com> <37b4ba31-245e-44d1-9183-5c3367c88101@googlegroups.com> <2db42c1b-cfd4-4a6f-9e0c-ce269ddf00c5@googlegroups.com> Mime-Version: 1.0 Injection-Info: mx04.eternal-september.org; posting-host="77deb14aadc54f7e5248011e65bf9740"; logging-data="23319"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX1/7dD3Wr5nZXk5Wer5DSwtf+cLd5+qG2BA=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (darwin) Cancel-Lock: sha1:alCjYGUqZXswHy7QqLPShKv9+MY= sha1:cV+GmkNt8wJLqGkT7tIbMnczdmA= Content-Type: text/plain Date: 2012-07-11T20:30:45+01:00 List-Id: Ken Thomas writes: > Perhaps we should remember the motivation of the BLAS/LAPACK. A > standard specification that is implemented by hardware companies such > as Intel, AMD using all the wizardry to obtain high performance. A > related question is given the Ada .Numerics package > Generic_Real_Arrays how do we modify the build to link in the high > performance tools? Well, with GNAT GPL 2012/GCC 4.7 you can't, because Generic_Real_Arrays has been rewritten in pure Ada (using Jacobi, which I gather is not known to be fast) in order not to use BLAS because of a feeling that some BLAS's might use an unacceptable numeric approximation. Personally I think this was daft.