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From "Matthias Boehm (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SYSTEMML-2395) IPA hanging on large compiling large JMLC prepared script
Date Thu, 14 Jun 2018 05:18:00 GMT

     [ https://issues.apache.org/jira/browse/SYSTEMML-2395?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matthias Boehm updated SYSTEMML-2395:
-------------------------------------
    Description: The new rewrite for IPA dead code elimination has an issue of marking hops
as visited leading to a combinatorical explosion when traversing large and complex DAGs. 
(was: The constant folding rewrite hangs on a complex JMLC application after SYSTEMML-2390
has been introduced.

{code}
CP°exp°-9.25·SCALAR·DOUBLE·true°_Var161·SCALAR·DOUBLE
CP°mvvar°_Var161°__cf_tmp
# hanging
{code})
        Summary: IPA hanging on large compiling large JMLC prepared script  (was: Constant
folding hanging after instruction execution)

> IPA hanging on large compiling large JMLC prepared script
> ---------------------------------------------------------
>
>                 Key: SYSTEMML-2395
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-2395
>             Project: SystemML
>          Issue Type: Bug
>            Reporter: Matthias Boehm
>            Priority: Major
>
> The new rewrite for IPA dead code elimination has an issue of marking hops as visited
leading to a combinatorical explosion when traversing large and complex DAGs.



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