mboehm7 commented on pull request #1078: URL: https://github.com/apache/systemds/pull/1078#issuecomment-706680533
well, for now I would recommend to properly maintain the non-zeros. It can only become a moderate overhead if the output is large compared to the compute (cubic compute and linear write vs linear counting). What usually helps is to do the nnz maintenance at the end of each multi-threaded computation task, which gives locality. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
