WuZeyi created SPARK-29553:
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Summary: 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: 2.4.4, 2.3.0
Reporter: WuZeyi
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 OPENBLAS_NUM_THREADS=1，and
the performance improve.
I think MKL_NUM_THREADS is the same.
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