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The "RunningOverInfiniBand" page has been changed by edwardyoon: http://wiki.apache.org/hama/RunningOverInfiniBand Comment: Add SDP enabiling guide New page: == Running Hama Over InfiniBand == === Create an SDP configuration file === Each BSP peer (task) will have its own port number for communicating with others. For example, if you set {{{set bsp.peer.port}}} to 61000 and set {{{bsp.tasks.maximum}}} to 5, BSP peers will use the port range from 61000 to 61005. To enable SDP support for BSP peers, create a configuration file like the following sample: {{{ [[email protected] ~]# cat {$HAMA_HOME}/conf/sdp.conf # Use SDP when binding to bind 192.168.10.1 61000-61010 # Use SDP when connecting to connect 192.168.10.0/24 61000-61010 }}} NOTE: This configuration file must reside on every node. === Set the system property that specifies the location of the configuration file === And then, set the location of the configuration file by adding {{{-Dcom.sun.sdp.conf}}} to the {{{bsp.child.java.opts}}} property as following: {{{ <property> <name>bsp.child.java.opts</name> <value>-Dcom.sun.sdp.conf={$HAMA_HOME}/sdp.conf -Xmx1024m</value> <description>Java opts for the groom server child processes. The following symbol, if present, will be interpolated: @taskid@ is replaced by current TaskID. Any other occurrences of '@' will go unchanged. For example, to enable verbose gc logging to a file named for the taskid in /tmp and to set the heap maximum to be a gigabyte, pass a 'value' of: -Xmx1024m -verbose:gc -Xloggc:/tmp/@[email protected] The configuration variable bsp.child.ulimit can be used to control the maximum virtual memory of the child processes. </description> </property> }}} If everything is OK, you will see the following logs. {{{ CONNECT to 192.168.10.2:61005 (socket converted to SDP protocol) CONNECT to 192.168.10.5:61002 (socket converted to SDP protocol) CONNECT to 192.168.10.4:61003 (socket converted to SDP protocol) CONNECT to 192.168.10.1:61006 (socket converted to SDP protocol) ... }}} 1. http://en.wikipedia.org/wiki/Sockets_Direct_Protocol
