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Posted to issues@spark.apache.org by "Xiangrui Meng (JIRA)" <ji...@apache.org> on 2014/12/03 15:34:12 UTC

[jira] [Updated] (SPARK-4717) Optimize BLAS library to avoid de-reference multiple times in loop

     [ https://issues.apache.org/jira/browse/SPARK-4717?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xiangrui Meng updated SPARK-4717:
---------------------------------
    Assignee: DB Tsai

> Optimize BLAS library to avoid de-reference multiple times in loop
> ------------------------------------------------------------------
>
>                 Key: SPARK-4717
>                 URL: https://issues.apache.org/jira/browse/SPARK-4717
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>            Reporter: DB Tsai
>            Assignee: DB Tsai
>             Fix For: 1.2.0
>
>
> Have a local reference to `values` and `indices` array in the `Vector` object so JVM can locate the value with one operation call. See `SPARK-4581` for similar optimization, and the bytecode analysis. 



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