From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on yquem.inria.fr X-Spam-Level: * X-Spam-Status: No, score=1.1 required=5.0 tests=AWL,SPF_NEUTRAL autolearn=disabled version=3.1.3 X-Original-To: caml-list@yquem.inria.fr Delivered-To: caml-list@yquem.inria.fr Received: from discorde.inria.fr (discorde.inria.fr [192.93.2.38]) by yquem.inria.fr (Postfix) with ESMTP id CFC89BC0A for ; Fri, 6 Apr 2007 09:00:10 +0200 (CEST) Received: from wr-out-0506.google.com (wr-out-0506.google.com [64.233.184.231]) by discorde.inria.fr (8.13.6/8.13.6) with ESMTP id l36709PL019599 for ; Fri, 6 Apr 2007 09:00:10 +0200 Received: by wr-out-0506.google.com with SMTP id i3so547659wra for ; Fri, 06 Apr 2007 00:00:09 -0700 (PDT) DKIM-Signature: a=rsa-sha1; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=gO4BUpPpGHYRiZjL1sLNvVMbbZCh66zfUvUt4CLhtKXwmTy8dsj6PO1F20purcUlsJr1C7ZH0shR0mKcS2mbg1zBbdh3cTdTOHAj4JgkxnrUMXgZ1mMPjIJOS4OONs0DC9F8pqHVRR9DVXtmcHJfOllr1H1ethyeTQTLoWLCf9k= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:reply-to:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=h8RAJBLtAJfUq/X3AvQ9tcVMXpIaMdnmK49nOYXD4QG9tf6aDyjqs/EBn2jo9FfxMf7rODUbkG2BrJlQNzBUfqBRLfrCfXge+6IGuiRW/7UBjoNrdXglWkZeF8p/u7aUw6g8OCjd6AUUFUn8VYsPevRk8QcSi5ZezZDpd//7Tzc= Received: by 10.114.126.1 with SMTP id y1mr1122785wac.1175842809188; Fri, 06 Apr 2007 00:00:09 -0700 (PDT) Received: by 10.114.211.2 with HTTP; Fri, 6 Apr 2007 00:00:09 -0700 (PDT) Message-ID: <53c655920704060000w2a768362q38848be3cf263031@mail.gmail.com> Date: Fri, 6 Apr 2007 09:00:09 +0200 From: "David Baelde" Reply-To: david.baelde@ens-lyon.org To: "Florian Weimer" Subject: Re: [Caml-list] Optimizing Array.blit Cc: Tom , "OCaml Mailing List" In-Reply-To: <87r6qy5vxn.fsf@mid.deneb.enyo.de> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <53c655920704041519t77930d38y52003888139b9d2c@mail.gmail.com> <87r6qy5vxn.fsf@mid.deneb.enyo.de> X-j-chkmail-Score: MSGID : 4615EFF9.001 on discorde : j-chkmail score : X : 0/20 1 0.000 -> 1 X-Miltered: at discorde with ID 4615EFF9.001 by Joe's j-chkmail (http://j-chkmail . ensmp . fr)! X-Spam: no; 0.00; blit:01 frisch:01 bug:01 blit:01 unboxed:01 flags:01 unboxed:01 arrays:01 cheers:01 caml-list:01 alain:01 optimizing:02 floats:02 seems:03 float:03 Hi, According to Alain (Frisch I guess), in the bug report that I pointed, Array.blit causes checks for unboxed floats for every check, and also has to update GC flags. I don't master the second point but he seems to suggest that it can be optimized. In the case of non-overlapping unboxed float arrays, I believe a simple function similar to mine should work. But I'm not very confident in mine yet. Cheers. -- David