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From Apache Wiki <wikidi...@apache.org>
Subject [Hama Wiki] Update of "Benchmarks" by edwardyoon
Date Wed, 15 Apr 2015 06:38:15 GMT
Dear Wiki user,

You have subscribed to a wiki page or wiki category on "Hama Wiki" for change notification.

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 

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