Return-Path: X-Original-To: apmail-commons-issues-archive@minotaur.apache.org Delivered-To: apmail-commons-issues-archive@minotaur.apache.org Received: from mail.apache.org (hermes.apache.org [140.211.11.3]) by minotaur.apache.org (Postfix) with SMTP id B4D4E9A5F for ; Mon, 13 Feb 2012 21:45:22 +0000 (UTC) Received: (qmail 37710 invoked by uid 500); 13 Feb 2012 21:45:22 -0000 Delivered-To: apmail-commons-issues-archive@commons.apache.org Received: (qmail 37335 invoked by uid 500); 13 Feb 2012 21:45:21 -0000 Mailing-List: contact issues-help@commons.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: issues@commons.apache.org Delivered-To: mailing list issues@commons.apache.org Received: (qmail 37309 invoked by uid 99); 13 Feb 2012 21:45:20 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 13 Feb 2012 21:45:20 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=5.0 tests=ALL_TRUSTED,T_RP_MATCHES_RCVD X-Spam-Check-By: apache.org Received: from [140.211.11.116] (HELO hel.zones.apache.org) (140.211.11.116) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 13 Feb 2012 21:45:19 +0000 Received: from hel.zones.apache.org (hel.zones.apache.org [140.211.11.116]) by hel.zones.apache.org (Postfix) with ESMTP id E7A9E1B5F6E for ; Mon, 13 Feb 2012 21:44:59 +0000 (UTC) Date: Mon, 13 Feb 2012 21:44:59 +0000 (UTC) From: "Leandro Ariel Pezzente (Commented) (JIRA)" To: issues@commons.apache.org Message-ID: <944934528.33647.1329169499950.JavaMail.tomcat@hel.zones.apache.org> In-Reply-To: <2023849140.30454.1329097739814.JavaMail.tomcat@hel.zones.apache.org> Subject: [jira] [Commented] (MATH-745) up to 5x Performance Improvement on FasFourierTransformer.java by using a recursive iterative sumation Approach MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 [ https://issues.apache.org/jira/browse/MATH-745?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13207242#comment-13207242 ] Leandro Ariel Pezzente commented on MATH-745: --------------------------------------------- Hmmm ... maybe i made a mistake. I probably run both test at different processor load instances. I should probably resolve this as a Won't Fix and stop trying until I learn how to this properly. > up to 5x Performance Improvement on FasFourierTransformer.java by using a recursive iterative sumation Approach > --------------------------------------------------------------------------------------------------------------- > > Key: MATH-745 > URL: https://issues.apache.org/jira/browse/MATH-745 > Project: Commons Math > Issue Type: Improvement > Affects Versions: 3.0 > Reporter: Leandro Ariel Pezzente > Labels: FFT, Fast, Fourier, Transform > Attachments: FastFourierTransformer.patch.txt > > > By swithinch form a loop iterative approach to a recursive iterative approach on fastFourierTransformer.java a Perfomance Improvement of up to 5x is gained. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira