Github user tsailiming commented on the pull request:

    https://github.com/apache/spark/pull/4448#issuecomment-115091978
  
    I couldn't find any specific information with regards to this change on 
netlib-java instructions.
    
    I thought there was a specific reason that we need to to build OpenBLAS 
that do not use as many threads as cores because of how Spark work in terms of 
N tasks(threads) per executor, to avoid the stampede problem?
    
    Can one of the Spark developers comment on this? 
    
    
    



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