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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SYSTEMML-1915) Increase default block size
Date Sat, 16 Sep 2017 02:23:00 GMT
Matthias Boehm created SYSTEMML-1915:
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             Summary: Increase default block size
                 Key: SYSTEMML-1915
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1915
             Project: SystemML
          Issue Type: Sub-task
            Reporter: Matthias Boehm


So far we use a default blocksize of 1000 x 1000. This task aims to increase the default blocksize
to 2048 x 2048 in order to increase the default compression potential. 

Other advantages are reducing partial aggregation, increasing the applicability of physical
operators with blocksize constraints, and reducing the overhead for ultra-sparse matrices.



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