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IV07702: 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

    IV07702

  • Reported component name

    XL FORTRAN FOR

  • Reported component ID

    5724X1500

  • Reported release

    D10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-09-14

  • Closed date

    2011-11-02

  • Last modified date

    2011-11-03

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

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

    LI76634

Fix information

  • Fixed component name

    XL FORTRAN FOR

  • Fixed component ID

    5724X1500

Applicable component levels

  • RD10 PSY U848520

       UP A

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Document Information

Modified date:
03 November 2011