Compilers: IBM XL Fortran Enterprise Edition Version 10.1 for AIX
Compilers: IBM XL C/C++ Enterprise Edition Version 9.0 for AIX
Compilers: IBM XL Fortran Enterprise Edition Version 11.1 for AIX
OS: IBM AIX 5L V5.3
OS: IBM AIX V6
Last updated: 29-Jan-2008
]]>Usage: chsyscfg -r lpar | prof | sys | sysprof | frame -m <managed system> | -e <managed frame> -f <configuration file> | -i "<configuration data>" [--help] Changes partitions, partition profiles, system profiles, or the attributes of a managed system or a managed frame. -r - the type of resource(s) to be changed: lpar - partition prof - partition profile sys - managed system sysprof - system profile frame - managed frame -m <managed system> - the managed system's name -e <managed frame> - the managed frame's name -f <configuration file> - the name of the file containing the configuration data for this command. The format is: attr_name1=value,attr_name2=value,... or "attr_name1=value1,value2,...",... -i "<configuration data>" - the configuration data for this command. The format is: "attr_name1=value,attr_name2=value,..." or ""attr_name1=value1,value2,...",..." --help - prints this help The valid attribute names for this command are: -r prof required: name, lpar_id | lpar_name optional: ... lpar_proc_compat_mode (default | POWER6_enhanced)
Environment variables set before the run:
The fdpr command (Feedback Directed Program Restructuring) is a performance-tuning utility that may help improve the execution time and the real memory utilization of user-level application programs. The fdpr program optimizes the executable image of a program by collecting information on the behavior of the program while the program is used for some typical workload, and then creating a new version of the program that is optimized for that workload. The new program generated by fdpr typically runs faster and uses less real memory. -q, --quiet Set quiet output mode, suppressing informational messages -O Switch on basic optimizations only. -O2 Switch on less aggressive optimization flags. -O3 Switch on aggressive optimization flags. -O4 Switch on aggressive optimization flags together with aggressive function inlining. -A]]>, --align-code Align program code according to given -bldcg, --build-dcg Build a DCG (data connectivity graph) for enhanced data reordering (applicable only with the -RD flag) -shci , --selective-hot-code-inline Perform selective inlining of functions in order to decrease the total execution counts -sdp , --stride-data-prefetch Perform data prefetching within frequently executed loops based on stride analysis, according to an aggressiveness factor between (1,9), where 1 is least aggressive
-O5 is equivalent to the following flags
-O4 is equivalent to the following flags
-O3 is equivalent to the following flags
Supported values for this flag are
level=0 Does only minimal interprocedural analysis and optimization
level=1 turns on inlining , limited alias analysis, and limited call-site tailoring
level=2 turns on full interprocedural data flow and alias analysis
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