From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (from majordomo@localhost) by pauillac.inria.fr (8.7.6/8.7.3) id XAA32635; Sat, 8 May 2004 23:21:45 +0200 (MET DST) X-Authentication-Warning: pauillac.inria.fr: majordomo set sender to owner-caml-list@pauillac.inria.fr using -f Received: from concorde.inria.fr (concorde.inria.fr [192.93.2.39]) by pauillac.inria.fr (8.7.6/8.7.3) with ESMTP id XAA31136 for ; Sat, 8 May 2004 23:21:43 +0200 (MET DST) Received: from smtp.mbg.ocn.ne.jp (mbg.ocn.ne.jp [210.190.142.181]) by concorde.inria.fr (8.12.10/8.12.10) with ESMTP id i48LLgSH004634 for ; Sat, 8 May 2004 23:21:43 +0200 Received: from localhost (p18223-adsau14honb7-acca.tokyo.ocn.ne.jp [220.106.131.223]) by smtp.mbg.ocn.ne.jp (Postfix) with ESMTP id 2D4B96201; Sun, 9 May 2004 06:21:41 +0900 (JST) Date: Sun, 09 May 2004 06:21:38 +0900 (JST) Message-Id: <20040509.062138.71082875.yoriyuki@mbg.ocn.ne.jp> To: briand@aracnet.com Cc: caml-list@inria.fr Subject: Re: [Caml-list] interesting array efficiency observations From: Yamagata Yoriyuki In-Reply-To: <16541.9013.181806.9426@soggy.deldotd.com> References: <16541.9013.181806.9426@soggy.deldotd.com> X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Miltered: at concorde with ID 409D4F66.000 by Joe's j-chkmail (http://j-chkmail.ensmp.fr)! X-Loop: caml-list@inria.fr X-Spam: no; 0.00; caml-list:01 observations:01 yamagata:01 yoriyuki:01 yoriyuki:01 caml-list:01 observations:01 2004:99 slower:01 inlined:01 yamagata:01 bigarray:01 layout:04 array:04 array:04 Sender: owner-caml-list@pauillac.inria.fr Precedence: bulk From: briand@aracnet.com Subject: [Caml-list] interesting array efficiency observations Date: Sat, 8 May 2004 11:13:09 -0700 > I was investigating the use of 1-D bigarray's vs Array and noticed > that the 1-D bigarray using c_layout seems to be slower than Array. > > Is this an expected result ? Yes, it is expected, since a.{j} expands a call of a C function, while a.(j) expands inlined assembly codes. -- Yamagata Yoriyuki ------------------- To unsubscribe, mail caml-list-request@inria.fr Archives: http://caml.inria.fr Bug reports: http://caml.inria.fr/bin/caml-bugs FAQ: http://caml.inria.fr/FAQ/ Beginner's list: http://groups.yahoo.com/group/ocaml_beginners