LI77135: COMPILATION HANGS AT -O3 IN IPA

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Compiling the provided test case hangs with -O3.
    -V shows that the hang is in IPA step.
    
    xlf95_r -F:mpxlf95_r -q64 -WF,-q64 -qsuffix=cpp=f90
    -qsuppress=1500-036 -O3 -qlist -qreport
    -qarch=pwr6 -qtune=balanced -qcache=auto
    -qfloat=fltint -qzerosize -qessl -bdatapsize:64k
    -bstackpsize:64k -qsmp=omp -qdirective -qextname
    -WF,-D__AIX,-D_AIX,-Dextname,-D_EXTNAME,-D__prism,-Duse_comm_MPI
    1,-D__cpl_mpiom,-D__cpl_co2  -c mo_midatm.f90
    
    -O2 works.
    

Local fix

  • Use -O2 instead.
    

Problem summary

  • PROBLEM DESCRIPTION: Compiling user programs containing
    consecutive MEM_DELAY directives with -O3 hangs during
    compilation.
    
    USERS AFFECTED: Fortran programs containing consecutive
    MEM_DELAY directives and compiles at -O3.
    

Problem conclusion

  • Added the code to handle the consecutive calls to mem_dealy to
    avoid the splitting of them during loop distribution.
    problem is fixed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI77135

  • Reported component name

    XL FORTRAN LINU

  • Reported component ID

    5725C7500

  • Reported release

    E10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-12-17

  • Closed date

    2012-12-17

  • Last modified date

    2012-12-17

  • APAR is sysrouted FROM one or more of the following:

    IV30070

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    XL FORTRAN LINU

  • Fixed component ID

    5725C7500

Applicable component levels

  • RE10 PSY

       UP



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Document information


More support for:

XL Fortran for Linux
Compiler

Software version:

14.1

Reference #:

LI77135

Modified date:

2012-12-17

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