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https://issues.apache.org/jira/browse/SYSTEMML-1550?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias Boehm updated SYSTEMML-1550:
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Description: In addition to our traditional memory estimates (based on
exact or worst-case dimensions and sparsity), operator selection also performs
a check for valid integer dimensions and maximum dense size. However, this
dimension/size check does not take worst-case estimates into account.
Therefore, we currently compile unnecessary distributed operations for
operations that produce ultra-sparse outputs without exactly known sparsity
such as rexpand.
> Missing worst-cased estimates on valid dimension/size checks
> ------------------------------------------------------------
>
> Key: SYSTEMML-1550
> URL: https://issues.apache.org/jira/browse/SYSTEMML-1550
> Project: SystemML
> Issue Type: Bug
> Reporter: Matthias Boehm
>
> In addition to our traditional memory estimates (based on exact or worst-case
> dimensions and sparsity), operator selection also performs a check for valid
> integer dimensions and maximum dense size. However, this dimension/size check
> does not take worst-case estimates into account. Therefore, we currently
> compile unnecessary distributed operations for operations that produce
> ultra-sparse outputs without exactly known sparsity such as rexpand.
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