[ https://issues.apache.org/jira/browse/SYSTEMML-1915?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matthias Boehm closed SYSTEMML-1915. ------------------------------------ Resolution: Not A Problem Assignee: Matthias Boehm Fix Version/s: SystemML 1.0 marked as not a problem because with the used of shared dictionaries, the overhead with small 1k x 1k blocks is acceptable. > Increase default block size to 2048 > ----------------------------------- > > Key: SYSTEMML-1915 > URL: https://issues.apache.org/jira/browse/SYSTEMML-1915 > Project: SystemML > Issue Type: Sub-task > Reporter: Matthias Boehm > Assignee: Matthias Boehm > Fix For: SystemML 1.0 > > > 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. -- This message was sent by Atlassian JIRA (v6.4.14#64029)