IBM Support

LI76634: PERFORMANCE DEGRADATION WITH -QHOT

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Potential performance degradation for 64-bit programs with
    32-bit loop control variables compared to previous versions of
    the compiler while using -qhot compile option.
    

Local fix

  • N/A
    

Problem summary

  • Function call/ builtins in the loop were not commoned which
    resulted in performance degradation.
    

Problem conclusion

  • The problem had been fixed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI76634

  • Reported component name

    XL FORTRAN LINU

  • Reported component ID

    5724X1600

  • Reported release

    D10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2012-02-06

  • Closed date

    2012-02-06

  • Last modified date

    2012-02-06

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

    IV07702

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

Fix information

  • Fixed component name

    XL FORTRAN LINU

  • Fixed component ID

    5724X1600

Applicable component levels

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSAT4T","label":"XL Fortran for Linux"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"D10","Line of Business":{"code":"LOB57","label":"Power"}}]

Document Information

Modified date:
17 October 2021