Return-Path: Delivered-To: apmail-hadoop-common-user-archive@www.apache.org Received: (qmail 16422 invoked from network); 12 Apr 2010 12:43:48 -0000 Received: from unknown (HELO mail.apache.org) (140.211.11.3) by 140.211.11.9 with SMTP; 12 Apr 2010 12:43:48 -0000 Received: (qmail 82525 invoked by uid 500); 12 Apr 2010 12:43:46 -0000 Delivered-To: apmail-hadoop-common-user-archive@hadoop.apache.org Received: (qmail 82493 invoked by uid 500); 12 Apr 2010 12:43:45 -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 82485 invoked by uid 99); 12 Apr 2010 12:43:45 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 12 Apr 2010 12:43:45 +0000 X-ASF-Spam-Status: No, hits=3.0 required=10.0 tests=AWL,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,HTML_MESSAGE,SPF_PASS,T_TO_NO_BRKTS_FREEMAIL X-Spam-Check-By: apache.org Received-SPF: pass (athena.apache.org: domain of lamfeeling2@gmail.com designates 74.125.82.48 as permitted sender) Received: from [74.125.82.48] (HELO mail-ww0-f48.google.com) (74.125.82.48) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 12 Apr 2010 12:43:39 +0000 Received: by wwb29 with SMTP id 29so1548052wwb.35 for ; Mon, 12 Apr 2010 05:43:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:received:message-id :subject:from:to:content-type; bh=uek0pxboCyOy/yUC8o+qtbfEt/HTX6gpW2+t2vgV2kY=; b=YlUf8KmXLyzB5DT1tpaTMauZaSLwW9BcRjH7to2JD+Kw+BfTps/3tkYEs91/Cac8Hf 8nc5KirKinBnJXZxMnYmrLRQ6amV3c62603FiDP2Bk7ZWh+92gDJlym363n9XKt+AKkj u6Pt0sNbEmsKgtOCofJpozzawHws98vmApcXA= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:content-type; b=viwxdHbcjmSJALxEc+O9fN1PleFjG4ZqoNw6nSWVs+pzIrILqrOtl5qd6CF0aRWMvs z6cTPTG852AZa9+XmrGmT16oBB2tVTypn1gOJiM75qpvZXdzojugpBNJvMptjAlooszB N/6ctbj/1/CLYloWXTlBLTSuMw6i5bL1Mc1N0= MIME-Version: 1.0 Received: by 10.216.169.209 with HTTP; Mon, 12 Apr 2010 05:43:18 -0700 (PDT) Date: Mon, 12 Apr 2010 13:43:18 +0100 Received: by 10.216.184.132 with SMTP id s4mr2405380wem.122.1271076198068; Mon, 12 Apr 2010 05:43:18 -0700 (PDT) Message-ID: Subject: Specify Number of Cores in HOD From: Song Liu To: common-user@hadoop.apache.org Content-Type: multipart/alternative; boundary=00163641828f44b42b0484097d96 --00163641828f44b42b0484097d96 Content-Type: text/plain; charset=ISO-8859-1 Dear all, I'm running HOD (.20.2) on my cluster. Each machine in my cluster has more than one processor. How can I make use of them? I can see there is a argument which can control the number nodes to allocate, but I cant see any parameters which can specify the number of processors per machine. Can HOD control the number of cores we use on each machine? I think it may be very important because it's strongly related to the capacity of mappers or reducers. Best Wishes Song Liu --00163641828f44b42b0484097d96--