systemml-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Created] (SYSTEMML-1754) Performance removeEmpty w/ shallow copy if unmodified
Date Sun, 09 Jul 2017 04:24:00 GMT
Matthias Boehm created SYSTEMML-1754:
----------------------------------------

             Summary: Performance removeEmpty w/ shallow copy if unmodified
                 Key: SYSTEMML-1754
                 URL: https://issues.apache.org/jira/browse/SYSTEMML-1754
             Project: SystemML
          Issue Type: Task
            Reporter: Matthias Boehm


Often removeEmpty is used to guard against special cases with entirely empty rows or columns.
In case of no removed rows or columns the full copy into the output is unnecessarily inefficient.
This task aims to modify removeEmpty rows/cols for both dense and sparse matrices to leverage
a shallow copy if determined output dimensions match the input dimensions.



--
This message was sent by Atlassian JIRA
(v6.4.14#64029)

Mime
View raw message