Return-Path: Delivered-To: apmail-incubator-hama-commits-archive@minotaur.apache.org Received: (qmail 74255 invoked from network); 15 Feb 2011 23:50:09 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 15 Feb 2011 23:50:09 -0000 Received: (qmail 95488 invoked by uid 500); 15 Feb 2011 23:50:09 -0000 Delivered-To: apmail-incubator-hama-commits-archive@incubator.apache.org Received: (qmail 95455 invoked by uid 500); 15 Feb 2011 23:50:09 -0000 Mailing-List: contact hama-commits-help@incubator.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: hama-dev@incubator.apache.org Delivered-To: mailing list hama-commits@incubator.apache.org Received: (qmail 95447 invoked by uid 99); 15 Feb 2011 23:50:09 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 15 Feb 2011 23:50:09 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=5.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.131] (HELO eos.apache.org) (140.211.11.131) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 15 Feb 2011 23:50:09 +0000 Received: from eosnew.apache.org (localhost [127.0.0.1]) by eos.apache.org (Postfix) with ESMTP id C8F4E1C9 for ; Tue, 15 Feb 2011 23:49:38 +0000 (UTC) MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Apache Wiki To: Apache Wiki Date: Tue, 15 Feb 2011 23:49:38 -0000 Message-ID: <20110215234938.99568.14419@eosnew.apache.org> Subject: =?utf-8?q?=5BHama_Wiki=5D_Trivial_Update_of_=22Architecture=22_by_edwardy?= =?utf-8?q?oon?= Dear Wiki user, You have subscribed to a wiki page or wiki category on "Hama Wiki" for chan= ge notification. The "Architecture" page has been changed by edwardyoon. http://wiki.apache.org/hama/Architecture?action=3Ddiff&rev1=3D153&rev2=3D154 -------------------------------------------------- <> = + Hama consists of three major components: BSPMaster, GroomServers and Zook= eeper. It is very similar with Hadoop architecture, only except the portion= of communication and synchronization mechanisms. - =3D=3D Introduction =3D=3D - = - HAMA is a distributed computing framework based on BSP (Bulk Synchronous = Parallel) computing techniques for massive scientific computations (e.g., m= atrix, graph, network, ..., etc), Currently being incubated as one of the i= ncubator project by the Apache Software Foundation. - = - =3D=3D HAMA Architecture =3D=3D - = - Hama is consists of three major components: BSPMaster, !GroomServers and = Zookeeper. = = =3D=3D=3D BSPMaster =3D=3D=3D = @@ -34, +28 @@ = A Zookeeper is used to manage the efficient barrier synchronisation of th= e BSPPeers. Later, it will also be used for the area of a fault tolerance s= ystem. = - =3D=3D BSP Programming Model =3D=3D - = - A BSP program consists of a sequence of supersteps. Each superstep consis= ts of the three phases below: - = - * Local computation - * Process communication - * Barrier synchronization - = - After all processes have entered the barrier using sync() method, the Ham= a proceeds to the next superstep. You can send one more messages on to any = other processes in bsp() method. The whole job will be finished automatical= ly when all processes have no more local and outgoing queues entries, or fi= nished normally. -=20