Hi, I am still using Giraph-1.1.0 and I will upgrade soon. Thanks a lot for your suggestions. This is the exact command I used
hadoop jar myjar.jar org.apache.giraph.GiraphRunner MyBetweenness.BetweennessComputation -vif MyBetweenness.VertexDataInputFormat -vip /user/$USER/inputbc/wiki-Vote -vof MyBetweenness.VertexDataOutputFormat -op /user/$USER/outputBC 1.0 -w 2 -yj myjar.jar -ca giraph.useOutOfCoreMessages=true -ca giraph.maxMessagesInMemory=10000 -ca giraph.useOutOfCoreGraph=true -ca giraph.waitTaskDoneTimeoutMs=450000 -ca giraph.logLevel=debug -ca giraph.isStatic=true I checked the memory information. After Superstep -1, Free memory is 907mb, Total is 987 mb. mapreduce.map.memory.mb is 10240mb. Sai Ganesh
