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Posted to issues@spark.apache.org by "Sean R. Owen (Jira)" <ji...@apache.org> on 2019/11/22 02:16:00 UTC
[jira] [Resolved] (SPARK-29553) This problemis about using native
BLAS to improvement ML/MLLIB performance
[ https://issues.apache.org/jira/browse/SPARK-29553?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sean R. Owen resolved SPARK-29553.
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Resolution: Not A Problem
> This problemis about using native BLAS to improvement ML/MLLIB performance
> --------------------------------------------------------------------------
>
> Key: SPARK-29553
> URL: https://issues.apache.org/jira/browse/SPARK-29553
> Project: Spark
> Issue Type: Improvement
> Components: ML, MLlib
> Affects Versions: 2.3.0, 2.4.4
> Reporter: WuZeyi
> Priority: Minor
> Labels: performance
> Attachments: image-2019-11-19-16-11-43-130.png, image-2019-11-19-16-13-30-723.png, image-2019-11-21-17-08-15-797.png
>
>
> I use {color:#ff0000}native BLAS{color} to improvement ML/MLLIB performance on Yarn.
> The file {color:#ff0000}spark-env.sh{color} which is modified by SPARK-21305 said that I should set {color:#ff0000}OPENBLAS_NUM_THREADS=1{color} to disable multi-threading of OpenBLAS, but it does not take effect.
> I modify {color:#ff0000}spark.conf{color} to set {color:#FF0000}spark.executorEnv.OPENBLAS_NUM_THREADS=1{color}，and the performance improve.
>
>
> I think MKL_NUM_THREADS is the same.
>
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