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https://issues.apache.org/jira/browse/SPARK-41188?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17635632#comment-17635632
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Apache Spark commented on SPARK-41188:
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User 'WeichenXu123' has created a pull request for this issue:
https://github.com/apache/spark/pull/38699
> Set executorEnv OMP_NUM_THREADS to be spark.task.cpus by default for spark
> executor JVM processes
> -------------------------------------------------------------------------------------------------
>
> Key: SPARK-41188
> URL: https://issues.apache.org/jira/browse/SPARK-41188
> Project: Spark
> Issue Type: Improvement
> Components: ML, Spark Core
> Affects Versions: 3.3.1
> Reporter: Weichen Xu
> Assignee: Weichen Xu
> Priority: Major
> Fix For: 3.4.0
>
>
> Set executorEnv OMP_NUM_THREADS to be spark.task.cpus by default for spark
> executor JVM processes, this is for limiting the thread number for OpenBLAS
> routine to the number of cores assigned to this executor because some spark
> ML algorithms calls OpenBlAS via netlib-java
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