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From "Andrew Palumbo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MAHOUT-1934) OpenMP jars aren't being picked up in distributed Spark
Date Sat, 25 Feb 2017 22:15:44 GMT

    [ https://issues.apache.org/jira/browse/MAHOUT-1934?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15884407#comment-15884407
] 

Andrew Palumbo commented on MAHOUT-1934:
----------------------------------------

[~rawkintrevo] this is good to go correct?  

> OpenMP jars aren't being picked up in distributed Spark
> -------------------------------------------------------
>
>                 Key: MAHOUT-1934
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1934
>             Project: Mahout
>          Issue Type: Improvement
>    Affects Versions: 0.13.0
>            Reporter: Trevor Grant
>            Assignee: Andrew Palumbo
>            Priority: Blocker
>             Fix For: 0.13.0
>
>
> When executing the following:
> ```
> import org.apache.mahout.math.decompositions._
> drmX.checkpoint() 
> val (U, V, s) = dspca(drmX, k = 30, q = 1)
> ```
> I see the following:
> ```
> import org.apache.mahout.math.decompositions._
> res1: org.apache.mahout.math.drm.CheckpointedDrm[Int] = org.apache.mahout.sparkbindings.drm.CheckpointedDrmSpark@2e8dd198
> [INFO] Creating org.apache.mahout.viennacl.opencl.GPUMMul solver
> [WARN] Unable to create class GPUMMul: attempting OpenMP version
> [INFO] Creating org.apache.mahout.viennacl.openmp.OMPMMul solver
> org.apache.mahout.viennacl.openmp.OMPMMul$
> [INFO] Unable to create class OMPMMul: falling back to java version
> drmReduxX: org.apache.mahout.math.drm.DrmLike[Int] = 
> OpMapBlock(OpTimesRightMatrix(org.apache.mahout.s...
> ```
> The code executes fine, but it seems the OpenMP is not getting picked up.
> To be clear I build these jars with -Pviennacl-omp
> I the issue persists through other operations as well.  I am running on a 3 node Yarn
cluster/ spark 1.6.3



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