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The "Benchmarks" page has been changed by edwardyoon: https://wiki.apache.org/hama/Benchmarks?action=diff&rev1=65&rev2=66 The major improvement changes are in the queue and messaging systems. We now use own outgoing/incoming message manager instead of using Java's built-in queues. It stores messages in serialized form in a set of bundles (or a single bundle) to reduce the memory usage and RPC overhead. Kryo serializer is used to serialize objects more quickly. Another important improvement is the enhanced graph package. Instead of sending each message individually, we package the messages per vertex and send a packaged message to their assigned destination nodes. The thread-pool executor service also used for each vertex computation. With this, we achieve better performance. + {{https://lh6.googleusercontent.com/-C2a7xlwPLdo/VS4HBRzkt1I/AAAAAAAAE9U/VG5ShajJSyo/w795-h609-no/hama.png}} + == Graph Package: PageRank Benchmarks 0.6.4 vs 0.7.0-SNAPSHOT == * In 0.7.0-SNAPSHOT, the sender-side sends a list of messages per Vertex, the receiver-side uses normal Queue instead of Sorted Queue
