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Posted to issues@systemml.apache.org by "Matthias Boehm (JIRA)" <ji...@apache.org> on 2017/10/28 04:54:03 UTC
[jira] [Updated] (SYSTEMML-1976) Slow codegen outer left/right mm
w/ ultra-sparse inputs
[ https://issues.apache.org/jira/browse/SYSTEMML-1976?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Matthias Boehm updated SYSTEMML-1976:
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Description: Recent ALS-CG experiments with the ultra-sparse amazon reviews dataset (sparsity 1.2e-6) have show unnecessarily slow codegen outer (especially left mm) operations. This task aims to fix this by better cache blocking to ensure blocking itself does not introduce overhead for ultra-sparse matrices.
> Slow codegen outer left/right mm w/ ultra-sparse inputs
> -------------------------------------------------------
>
> Key: SYSTEMML-1976
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1976
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
>
> Recent ALS-CG experiments with the ultra-sparse amazon reviews dataset (sparsity 1.2e-6) have show unnecessarily slow codegen outer (especially left mm) operations. This task aims to fix this by better cache blocking to ensure blocking itself does not introduce overhead for ultra-sparse matrices.
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