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  1. ROOT
  2. ROOT-8802

problem with parallel build on a ppc64le machine

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    • Bug
    • Status: Closed (View Workflow)
    • Medium
    • Resolution: Duplicate
    • 6.08/06
    • None
    • CINT
    • None
    • LSB Version: :core-4.1-noarch:core-4.1-ppc64le
      Distributor ID: RedHatEnterpriseServer
      Description: Red Hat Enterprise Linux Server release 7.3 (Maipo)
      Release: 7.3
      Codename: Maipo

    Description

      We have been making test builds on a machine with 128 cores of the IBM ppc chip. We find that the build fails when the parallelism is too high. For instance we find this problem with, make -j128 (and sometimes with -j40):
      [ 56%] Generating G__XML.cxx, ../../lib/libXMLIO_rdict.pcm, ../../lib/libXMLIO.rootmap
      ...
      [ 57%] Built target G__ProofDraw
      Error: Cannot find G__XML.cxx_tmp!
      Error: Renaming G_XML.cxx_tmp into G_XML.cxx!
      [ 57%] Built target G__EG
      [ 57%] Built target G__XML
      make[2]: *** [io/xml/G__XML.cxx] Error 1
      make[2]: *** Deleting file `io/xml/G__XML.cxx'
      make[1]: *** [io/xml/CMakeFiles/XMLIO.dir/all] Error 2
      make[1]: *** Waiting for unfinished jobs....

      There is no problem if we do not attempt a parallel build. We presume that the build dependencies are not fully specified. The failure always seems to be for io/xml/G__XML.cxx.

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              axel Axel Naumann
              garren Lynn Garren
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