Fixes are available
XL C/C++ for Linux Fix Pack 9 (August 2013 Update) for 11.1
October 2011 Update for XL C/C++ for Linux, V11.1
October 2011 Update for XL Fortran for Linux, V13.1
June 2012 Update for XL C/C++ for Linux, V11.1
June 2012 Update for XL Fortran for Linux, V13.1
October 2012 Update for XL C/C++ for Linux, V11.1
October 2012 Update for XL Fortran for Linux, V13.1
XL C/C++ for Linux Fix Pack 8 (June 2013 Update) for 11.1
XL Fortran for Linux Fix Pack 8 (June 2013 Update) for 13.1
APAR status
Closed as program error.
Error description
Performance issues with MASS POWER7 libraries compared to POWER5/POWER6 equivalents on POWER7 hardware in applications where input and output data is commonly not aligned to 16-byte boundaries.
Local fix
N/A
Problem summary
PROBLEM DESCRIPTION: Poor performance of single-precision MASS routines in libmassvp7 compared to libmassvp5,vp6 on misaligned data. USERS AFFECTED: Users of single-precision MASS with -lmassvp7 or -qhot=vector -qtune=pwr7 .
Problem conclusion
Tuned POWER7 implementations to improve performance for misaligned data.
Temporary fix
Comments
APAR Information
APAR number
LI76358
Reported component name
XL MASS LIB COM
Reported component ID
5724X1602
Reported release
610
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2011-08-05
Closed date
2011-10-28
Last modified date
2011-10-28
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
LI76647
Fix information
Fixed component name
XL MASS LIB COM
Fixed component ID
5724X1602
Applicable component levels
R610 PSY
UP
[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSAT4T","label":"XL Fortran for Linux"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"610","Line of Business":{"code":"LOB57","label":"Power"}}]
Document Information
Modified date:
17 October 2021