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=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,5c4627b775acf6be X-Google-Attributes: gid103376,public From: Gautier Subject: Re: SIMD extensions in Ada :-(. Was: Re: The Ada Scalar, Vector, Matrix and Tensor arithmetic library? Date: 1999/12/07 Message-ID: <384C4E43.AB4B0D3@maths.unine.ch>#1/1 X-Deja-AN: 557478095 Content-Transfer-Encoding: 7bit References: <38497235.D8339C38@netwood.net> <82btoo$8201@news.cis.okstate.edu> <82buhr$8q61@news.cis.okstate.edu> <38498EB1.306427C8@netwood.net> <82c7mu$a2g1@news.cis.okstate.edu> <3849E314.6281FC6D@netwood.net> <82cors$9281@news.cis.okstate.edu> <82dk7t$5ka$1@birch.prod.itd.earthlink.net> <01bf3f36$43ebbd50$022a6282@dieppe> <82e6pv$79q1@news.cis.okstate.edu> X-Accept-Language: en Content-Type: text/plain; charset=us-ascii MIME-Version: 1.0 Newsgroups: comp.lang.ada Date: 1999-12-07T00:00:00+00:00 List-Id: * What about MIMD that Ada95 can provide (e.g. GNAT) ? I may be wrong, but MIMD can be much more efficient than data parallelisation in SIMD. A link about it... http://fedelma.astro.univie.ac.at/web/ * Another question is: could one day Ada compilers admit that implementing A:= (others=> (others=> 0.0) ); by filling directly the matrix A with 0.0 is as safe as creating a matrix in the stack, zeroing it, then copying it to A ... Generally, when direct filling or copy is obiously safe, it should be implemented as such. (IMHO) -- Gautier _____\\________________\_______\ http://members.xoom.com/gdemont/