Return-Path: Delivered-To: apmail-hadoop-common-user-archive@www.apache.org Received: (qmail 83463 invoked from network); 13 Nov 2009 14:40:08 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 13 Nov 2009 14:40:08 -0000 Received: (qmail 40629 invoked by uid 500); 13 Nov 2009 14:40:02 -0000 Delivered-To: apmail-hadoop-common-user-archive@hadoop.apache.org Received: (qmail 40462 invoked by uid 500); 13 Nov 2009 14:40:02 -0000 Mailing-List: contact common-user-help@hadoop.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: common-user@hadoop.apache.org Delivered-To: mailing list common-user@hadoop.apache.org Received: (qmail 40443 invoked by uid 500); 13 Nov 2009 14:40:02 -0000 Delivered-To: apmail-hadoop-core-user@hadoop.apache.org Received: (qmail 40438 invoked by uid 99); 13 Nov 2009 14:40:02 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 13 Nov 2009 14:40:02 +0000 X-ASF-Spam-Status: No, hits=3.3 required=10.0 tests=DATE_IN_FUTURE_12_24,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: domain of zjffdu@gmail.com designates 209.85.220.215 as permitted sender) Received: from [209.85.220.215] (HELO mail-fx0-f215.google.com) (209.85.220.215) by apache.org (qpsmtpd/0.29) with ESMTP; Fri, 13 Nov 2009 14:39:51 +0000 Received: by fxm7 with SMTP id 7so3519070fxm.29 for ; Fri, 13 Nov 2009 06:39:31 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:references :in-reply-to:subject:date:message-id:mime-version:content-type :content-transfer-encoding:x-mailer:thread-index:content-language; bh=mSO9oZkg5iac5OyxrlPbKcnVhMUHjOmaECS5FQzPWMg=; b=MhCasPfG1xc0rmbQiBnjv5ZYpN/BxJYJFhBZjNAW8CAwgJvLxHkgR4fR7DD9tcU2Vf L9Knr8v9dwhTGf+uezzzdAKiRr1rnOJh7SPZst5L1XAOtzt1SR+IH5Cemm5mo0FbBKZx PYUD8xvWsvdhRaFGxbvOndgPqVw1qQkBjyEGU= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:references:in-reply-to:subject:date:message-id:mime-version :content-type:content-transfer-encoding:x-mailer:thread-index :content-language; b=C5cUV21FeJ87lobC3kaej22RlNegTyCJnlc9WM2O7AOyoSpgLQXUJNxvvwirxTdnZP DGIC6IRRNeeUcdmY9mU/M4Le70TcoZ5LD5HrHYFXLEVYXjRH/T3sU3I92X7uoQ9KTSVU /oiXMnOdG7Ic+qtREBZnSUQhGOsi0IrHIUQ/o= Received: by 10.204.8.145 with SMTP id h17mr5188916bkh.156.1258123169693; Fri, 13 Nov 2009 06:39:29 -0800 (PST) Received: from zjf ([112.65.50.226]) by mx.google.com with ESMTPS id 16sm1284595fxm.0.2009.11.13.06.39.25 (version=TLSv1/SSLv3 cipher=RC4-MD5); Fri, 13 Nov 2009 06:39:28 -0800 (PST) From: "zjffdu" To: , References: <26332382.post@talk.nabble.com> In-Reply-To: <26332382.post@talk.nabble.com> Subject: RE: Using hadoop for Matrix Multiplication in NFS? Date: Fri, 13 Nov 2009 22:42:38 -0800 Message-ID: <00bc01ca64f5$ac720880$05561980$@com> MIME-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: AcpkMgZHWt/ao3vYS3GlVo+XZIJSxQAwyfoA Content-Language: zh-cn X-Virus-Checked: Checked by ClamAV on apache.org See my comments -----Original Message----- From: Gimick [mailto:gimmickivek@gmail.com]=20 Sent: 2009=C4=EA11=D4=C212=C8=D5 23:22 To: core-user@hadoop.apache.org Subject: Using hadoop for Matrix Multiplication in NFS? Hi, I am new to hadoop. I am planning to do matrix multiplication(of = order millions) using hadoop. =20 I have a few queries regarding the above. i) Will using hadoop be a fix for this or should I try some other approaches? --- Hama maybe such a tool that fit for your requirement, http://incubator.apache.org/hama/ ii) I will be using it in NFS. Will using hadoop still be a good = option? --- If you want to use NFS, I guess you have to provide your own InputFormat. So you'd better put your data into hdfs, it will make your = work easy and improve your program's performance If I can use hadoop for this problem, could you plz send links to = configure hadoop-site.xml file for a nfs system. P.S. I tried a few setup instructions via search, but everything seems = to give "Unable to connect to ...." error. --=20 View this message in context: http://old.nabble.com/Using-hadoop-for-Matrix-Multiplication-in-NFS--tp26= 332 382p26332382.html Sent from the Hadoop core-user mailing list archive at Nabble.com.