MPI2007 Flag Description
IBM Corporation IBM Power 575

This result has been formatted using multiple flags files. The "default header section" from each of them appears next.

Default header section from MPI2007_flags.0

IBM XL Compiler Flags and Common Unix Commands and Environment Settings

Compilers: IBM XL C/C++ Enterprise Edition Version 8.0 for AIX

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

Last updated: 03-Dec-2007

Default header section from MPI2007_flags.1

IBM XL Compilers with AIX 5L: Compiler Flags, Environment Settings and Utilities

Compilers: IBM XL C/C++ Enterprise Edition Version 8.0 for AIX

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

Last updated: 03-Dec-2007

Implicitly Included Flags

This section contains descriptions of flags that were included implicitly by other flags, but which do not have a permanent home at SPEC.

• • -O3
  • 

  • -O3 Performs additional optimizations that are memory intensive, compile-time intensive, and may change the semantics of the program slightly, unless -qstrict is specified. We recommend these optimizations when the desire for run-time speed improvements outweighs the concern for limiting compile-time resources.

    -O3 is equivalent to the following flags

    • -O2
    • -qhot=level=0

  • Includes:
    • -O2
      • -O
        • -O2
    • -qhot=level=0
• • -O2
  • 

  • -O2 Performs a set of optimizations that are intended to offer improved performance without an unreasonable increase in time or storage that is required for compilation.

  • Includes:
    • -O
      • -O2
        • -O
• • -O
  • 

  • -O enables the level of optimization that represents the best tradeoff between compilation speed and run-time performance. If you need a specific level of optimization, specify the appropriate numeric value. Currently, -O is equivalent to -O2.

  • Includes:
    • -O2
      • -O
        • -O2
• • -qhot=level=0
  • 

  • Performs high-order transformations on loops during optimization. The supported values for suboption are:

    • arraypad
    The compiler will pad any arrays where it infers that there may be a benefit.
    • level=0
    The compiler performs a limited set of high-order loop transformations.
    • level=1
    The compiler performs its full set of high-order loop transformations.
    • simd
    Replaces certain instruction sequences with vector instructions.
    • vector
    Replaces certain instruction sequences with calls to the MASS library.

    Specifying -qhot without suboptions implies -qhot=nosimd, -qhot=noarraypad, -qhot=vector and -qhot=level=1. The -qhot option is also implied by -O4, and -O5.

• • -qipa=level=1
  • 

  • Enhances optimization by doing detailed analysis across procedures (interprocedural analysis or IPA). The level determines the amount of interprocedural analysis and optimization that is performed.

    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

• • -qarch=auto
  • 

  • Produces object code containing instructions that will run on the specified processors. "auto" selects the processor the compile is being done on. "pwr5x" is the POWER5+ processor.

    Supported values for this flag are

    • auto
    Use the processor on which the program is compiled.
    • pwr6e
    The POWER6 processor in "Enhanced" mode based systems.
    • pwr6
    The POWER6 processor based systems.
    • pwr5x
    The POWER5+ processor based systems.
    • pwr5
    The POWER5 processor based systems.
    • pwr4
    The POWER4 processor based systems.
    • ppc970
    The PPC970 processor based systems.
• • -qtune=auto
  • 

  • Specifies the system architecture for which the executable program is optimized. This includes instruction scheduling and cache setting. The supported values for suboption are:

    • auto
    Use the processor on which the program is compiled.
    • pwr6e
    The POWER6 processor in "Enhanced" mode based systems.
    • pwr6
    The POWER6 processor based systems.
    • pwr5x
    The POWER5+ processor based systems.
    • pwr5
    The POWER5 processor based systems.
    • pwr4
    The POWER4 processor based systems.
    • ppc970
    The PPC970 processor based systems.

System and Other Tuning Information

This result has been formatted using multiple flags files. The "platform settings" from each of them appears next.

Platform settings from MPI2007_flags

AIX 5L with IBM XL Compilers MP Utility Descriptions

MPI is provided as part of the IBM AIX offering package "Parallel Operating Environment" (POE).

poe: MPI driver for AIX.

Platform settings from MPI2007_flags.0

IBM XL Compiler Flags and Common Unix Commands and Environment Settings

• ulimit

Controls resources allowed to be used by processes. All resource are set to unlimited, of primary importance is the "stack" and "data/heap" settings for SPEC CPU2006.
• chsyscfg -m system -r prof -i name=profile,lpar_name=partition,lpar_proc_compat_mode=POWER6_enhanced

This command enables the POWERPC architecture optional instructions supported on POWER6.

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)

• XLFRTEOPTS=intrinthrds=1

Causes the Fortran runtime to only use a single thread.
• fdpr -q -O4 -A 32 -bldcg -shci 90 -sdp 9

Usage:
fdpr [options] -p program [-x invocation]
where -p specifies the input program, in a form of executable, shared object
or archive file
-x specifies how to invoke the program
[options] can be one or more of the following:

  Action Options:

  -123  Specifies which actions/phases to run, where:
        -1  generates instrumented program for profile gathering
        -2  runs the instrumented program and updates profile data (requires -x <invocation>)
        -3  generates optimized program
        Default is set to run all three phases (-123)

  -a/--action [action]  Specifies customized actions
  where [action] can be one of the following:
        anl          analyze program
        instr        generate instrumented program for profile gathering (same as -1)
        opt          generate optimized program (same as -3)
        check_sign   check fdpr signature in the input program


  Analysis Options:

  -esa, --extra-safe-analysis
                         Do not attempt to analyze unconventional CSects
                         containing hand-written assembly code (when used, must
                         be specified at both instrumentation and optimization
                         phases)
  -aawc/-noaawc, --analyze-assembly-written-csects/--noanalyze-assembly-written-csects
                         Analyze/Do not analyze objects written in assembly (when
                         used/not used, must be specified at both
                         instrumentation and optimization phases). The default
                         is set to analyze assembly written modules
  -iinf, --ignore-info   Ignore .info sections produced with the -qfdpr option
                         during compile time
  -fca, --funcsect-analysis
                         Apply special analysis for an input executable that was
                         compiled with the -qfuncsect compiler option
  -ff <string>, --file-format <string>
                         Input file format: can be LM (load module) or PO
                         (program object)


  Instrumentation Options:

  -ei, --embedded-instrumentation
                         Perform embedded instrumentation. Profile will be
                         collected into global variables
  -infp, --ignore-not-found-procedures
                         Ignore not found procedures
  -fd <Fdesc>, --file-descriptor <Fdesc>
                         Set file descriptor number to be used when opening the
                         profile file that is mapped to the shared memory area
                         during profiling. The default of <Fdesc> is set to the
                         maximum-allowed open files
  -M <addr>, --profile-map <addr>
                         Set shared memory segment address for profiling.
                         Alternate shared memory addresses are needed when the
                         instrumented program application creates a conflict
                         with the shared-memory addresses preserved for the
                         profiling. Typical alternative values are 0x40000000,
                         0x50000000, ... up to 0xC0000000. Default is set to
                         0x3000000
  -ri/-nori, --register-instrumentation/--noregister-instrumentation
                         Instrument/Do not instrument the input program file to
                         collect profile information about indirect branches via
                         registers (applicable only with the -a instr option).
                         The default is set to collect the profile information
  -sfp/-nosfp, --save-floating-point-registers/--nosave-floating-point-registers
                         Save/Do not save floating point registers in
                         instrumented code (the default is set to save floating
                         point registers)
  -ipnvr, --instrumentation-preserve-non-volatile-registers
                         Preserve non volatile registers while calling stubs
  -iplr/-noiplr, --instrumentation-preserve-link-register/--noinstrumentation-preserve-link-register
                         Preserve/Do not preserve link register while calling
                         stubs
  -ipcr/-noipcr, --instrumentation-preserve-condition-register/--noinstrumentation-preserve-condition-register
                         Preserve/Do not preserve Condition Register while
                         calling stubs
  -ipctr/-noipctr, --instrumentation-preserve-count-register/--noinstrumentation-preserve-count-register
                         Preserve/Do not preserve Count Register while calling
                         stubs
  -ipxer/-noipxer, --instrumentation-preserve-fixed-point-exception-register/--noinstrumentation-preserve-fixed-point-exception-register
                         Preserve/Do not preserve Fixed-Point Exception Register
                         while calling stubs
  -ipspr/-noipspr, --instrumentation-preserve-special-registers/--noinstrumentation-preserve-special-registers
                         Preserve/Do not preserve special purpose registers while
                         calling stubs
  -ipvr/-noipvr, --instrumentation-preserve-volatile-registers/--noinstrumentation-preserve-volatile-registers
                         Preserve/Do not preserve volatile registers while
                         calling stubs. -noipvr implies -noipnvr and -nosfp
  -ipe/-noipe, --instrumentation-preserve-environment/--noinstrumentation-preserve-environment
                         Do not preserve registers that are not overwritten while
                         calling stubs. -noipe implies -noipvr -noipspr
  -spescr <0-127>, --spe-scratch-register <0-127>
                         Specify a global SPE scratch register, decreasing
                         instrumenation overhead, in order to minimize
                         possibility of local store overflow


  Profile Files Options:

  -af <prof_file>, --ascii-profile-file <prof_file>
                         Set the name of an ASCII profile file containing profile
                         information given by three different XML entry options:
                         <Simple .. >, <Cond .. > and <Reg .. > for profiling
                         data on regular, conditional or branch via registers
                         instructions accordingly
  -aop, --accept-old-profile
                         Accept old profile file collected on previous versions
                         of the input program file (requires the -f flag)
  -f <prof_file>, --profile-file <prof_file>
                         Set the profile file name. The profile file is created
                         during the instrumentation phase when issued with -a
                         instr option. The file is read by fdpr when issued with
                         the -a opt or -a anl options. Note, the profile file is
                         updated automatically when running the instrumented
                         program
  -spefdir <directory>, --spe-profile-directory <directory>
                         Set the directory where SPE profiles are located in
                         integrated mode (see -cell). Default is where <program>
                         is located


  Optimization Options:

  -A <num_of_bytes>, --align-code <num_of_bytes>
                         Align program code according to given <num_of_bytes>
  -bldcg, --build-dcg    Build a DCG (data connectivity graph) for enhanced data
                         reordering (applicable only with the -RD flag)
  -btcar, --branch-table-csect-anchor-removal
                         Eliminate load instructions related to the usage of
                         branch tables in the code
  -cRD, --conservativeRD
                         Perform conservative static data reordering by packing
                         all frequently referenced static variables together
  -cbtd, --convert-bss-to-data
                         Convert bss section into a data section (useful for more
                         aggressive tocload and RD optimizations)
  -dce, --dead-code-elimination
                         Eliminate instructions related to unused local variables
                         within frequently executed functions (useful mainly
                         after applying function inlining optimization)
  -dp, --data-prefetch   Insert dcbt instructions to improve data-cache
                         performance
  -dpht <threshold>, --data-placement-hotness-threshold <threshold>
                         Set data placement algorithm hotness threshold between
                         (0,1), where 0 will reorder the static variables in
                         large groups based on the control flow, and 1 reorders
                         the variables in very small groups based on their
                         access frequency. (applicable only with the -RD flag)
  -dpnf <factor>, --data-placement-normalization-factor <factor>
                         Set data placement algorithm normalization factor
                         between (0,1), where 0 causes static variables to be
                         reordered regardless of their size, and 1 locates only
                         small sized variables first. (applicable only with the
                         -RD flag)
  -ece, --epilog-code-eliminate
                         Reduce code size by grouping common instructions in
                         functions' epilogs, into a single unified code
  -fc, --function-cloning
                         Enable only function cloning phase during function
                         inlining optimizations (applicable only with function
                         inlining flags: -i, -si, -ihf, -isf, -shci)
  -hr, --hco-reschedule  Relocate instructions from frequently executed code to
                         rarely executed code areas, when possible
  -hrf <factor>, --hco-resched-factor <factor>
                         Set the aggressiveness of the -hr optimization option
                         according to a factor value between (0,1), where 0 is
                         the least aggressive factor (applicable only with the
                         -hr option)
  -i, --inline           Same as --selective-inline with --inline-small-funcs 12
  -ihf <pct>, --inline-hot-functions <pct>
                         Inline all function call sites to functions that have a
                         frequency count greater than the given <pct> frequency
                         percentage
  -isf <size>, --inline-small-funcs <size>
                         Inline all functions that are smaller or equal to the
                         given <size> in bytes
  -kr, --killed-registers
                         Eliminate stores and restores of registers that are
                         killed (overwritten) after frequently executed function
                         calls
  -lap, --load-address-propagation
                         Eliminate load instructions of variables' addresses by
                         re-using pre-loaded addresses of adjacent variables
  -las, --load-after-store
                         Add NOP instructions to place each load instruction
                         further apart following a store instruction that
                         reference the same memory address
  -lro, --link-register-optimization
                         Eliminate saves and restores of the link register in
                         frequently-executed functions
  -lu <aggressiveness_factor>, --loop-unroll <aggressiveness_factor>
                         Unroll short loops containing of one to several basic
                         blocks according to an aggressiveness factor between
                         (1,9), where 1 is the least aggressive unrolling option
                         for very hot and short loops
  -lun <unrolling_number>, --loop-unrolling-number <unrolling_number>
                         Set the number of unrolled iterations in each unrolled
                         loop. The allowed range is between (2,50). Default is
                         set to 2. (applicable only with the -lu flag)
  -O                     Switch on basic optimizations only. Same as -RC -nop -bp
                         -bf
  -O2                    Switch on less aggressive optimization flags. Same as -O
                         -hr -pto -isf 8 -tlo -kr
  -O3                    Switch on aggressive optimization flags. Same as -O2 -RD
                         -isf 12 -si -dp -lro -las -vro -btcar -lu 9 -rt 0
  -O4                    Switch on aggressive optimization flags together with
                         aggressive function inlining. Same as -O3 -sidf 50 -ihf
                         20
  -pc, --preserve-csects
                         Preserve CSects' boundaries in reordered code
  -pca, --propagate-constant-area
                         Relocate the constant variables area to the top of the
                         code section when possible
  -pfb, --preserve-first-bb
                         Preserve original location of the entry point basic
                         block in program
  -pp, --preserve-functions
                         Preserve functions' boundaries in reordered code
  -pr/-nopr, --ptrgl-r11/--noptrgl-r11
                         Perform/Do not perform removal of R11 load instruction
                         in _ptrgl csect (the default is to perform the
                         optimization)
  -pto, --ptrgl-optimization
                         Perform optimization of indirect call instructions via
                         registers by replacing them with conditional direct
                         jumps
  -ptosl <limit_size>, --ptrgl-optimization-size-limit <limit_size>
                         Set the limit of the number of conditional statements
                         generated by -pto optimization. Allowed values are
                         between 1..100. Default value set to 3. (applicable
                         only with the -pto flag)
  -ptoht <heatness_threshold>, --ptrgl-optimization-heatness-threshold <heatness_threshold>
                         Set the frequency threshold for indirect calls that are
                         to be optimized by -pto optimization. Allowed range
                         between 0..1. Default is set to 0.8. (applicable only
                         with -pto flag)
  -rcaf <aggressiveness_factor>, --reorder-code-aggressivenes-factor <aggressiveness_factor>
                         Set the aggressiveness of code reordering optimization.
                         Allowed values are 1 and 2, where 1 is less aggressive.
                         Default is set to 1. (applicable only with the -RC
                         flag)
  -rcctf <termination_factor>, --reorder-code-chain-termination-factor <termination_factor>
                         Set the threshold fraction which determines when to
                         terminate each chain of basic blocks during code
                         reordering. Allowed input range is between 0.0 to 1.0
                         where 0.0 generates long chains and 1.0 creates single
                         basic block chains. Default is set to 0.05. (applicable
                         only with the -RC flag)
  -rccrf <reversal_factor>, --reorder-code-condition-reversal-factor <reversal_factor>
                         Set the threshold fraction which determines when to
                         enable condition reversal for each conditional branch
                         during code reordering. Allowed input range is between
                         0.0 to 1.0 when 0.0 tries to preserve original
                         condition direction and 1.0 ignores it. Default is set
                         to 0.8 (applicable only with the -RC flag)
  -RD, --reorder-data    Perform static data reordering
  -rmte, --remove-multiple-toc-entries
                         Remove multiple TOC entries pointing to the same
                         location in the input program file
  -rt <removal_factor>, --reduce-toc <removal_factor>
                         Perform removal of TOC entries according to a removal
                         factor between (0,1), where 0 removes non-accessed TOC
                         entries only, and 1 removes all possible TOC entries
  -sdp <aggressiveness_factor>, --stride-data-prefetch <aggressiveness_factor>
                         Perform data prefetching within frequently executed
                         loops based on stride analysis, according to an
                         aggressiveness factor between (1,9), where 1 is least
                         aggressive
  -sdpla <iterations_number>, --stride-data-prefetch-look-ahead <iterations_number>
                         Set the number of iterations for which data is
                         prefetched into the cache ahead of time. Default value
                         is set to 4 iterations. (applicable only with the -sdp
                         flag)
  -sdpms <stride_min_size>, --stride-data-prefetch-min-size <stride_min_size>
                         Set the minimal stride size in bytes, for which data
                         will be considered as a candidate for prefetching.
                         Default value is set to 128 bytes. (applicable only
                         with the -sdp flag)
  -shci <pct>, --selective-hot-code-inline <pct>
                         Perform selective inlining of functions in order to
                         decrease the total execution counts
  -si, --selective-inline
                         Perform selective inlining of dominant hot function
                         calls
  -sll <Lib1:Prof1,...,LibN:ProfN>, --static-link-libraries <Lib1:Prof1,...,LibN:ProfN>
                         Statically link hot code from specified dynamically
                         linked libraries to the input program. The parameter
                         consists of comma-separated list of libraries and their
                         profiles. IMPORTANT: licensing rights of specified
                         libraries should be observed when applying this copying
                         optimization
  -sllht <hotness_threshold>, --static-link-libraries-hotness-threshold <hotness_threshold>
                         Set hotness threshold for the --static-link-libraries
                         optimization. The allowed input range is between 0
                         (least aggressive) to 1, or -1, which does not require
                         profile and selects all code that might be called by
                         the input program from the given libraries. Default is
                         0.5
  -sidf <percentage_factor>, --selective-inline-dominant-factor <percentage_factor>
                         Set a dominant factor percentage for selective inline
                         optimization. The allowed range is between (0,100).
                         Default is set to 80 (applicable only with the -si and
                         -pbsi flags)
  -siht <frequency_factor>, --selective-inline-hotness-threshold <frequency_factor>
                         Set a hotness threshold factor percentage for selective
                         inline optimization to inline all dominant function
                         calls that have a frequency count greater than the
                         given frequency percentage. Default is set to 100
                         (applicable only with the -si -pbsi flags)
  -so, --stack-optimization
                         Reduce the stack frame size of functions which are
                         called with a small number of arguments
  -stf, --stack-flattening
                         Merge the stack frames of inlined functions with the
                         frames of the calling functions
  -tb, --preserve-traceback-tables
                         Force the restructuring of traceback tables in reordered
                         code. If -tb option is omitted, traceback tables are
                         automatically included only for C++ applications which
                         use the Try & Catch mechanism
  -rtb, --remove-traceback-tables
                         Remove traceback tables in reordered code
  -tlo, --tocload-optimization
                         Replace each load instruction that references the TOC
                         with a corresponding add-immediate instruction via the
                         TOC anchor register, when possible
  -ucde, --unreachable-code-data-elimination
                         Remove unreachable code and non-accessed static data
  -vro, --volatile-registers-optimization
                         Eliminate stores and restores of non-volatile registers
                         in frequently executed functions by using available
                         volatile registers


  Output Options:
  -d, --disassemble-text
                         Print the disassembled text section of the output
                         program into <output_file>.dis_text file
  -dap, --dump-ascii-profile
                         Dump profile information in ASCII format into
                         <program>.aprof (requires the -f flag)
  -db, --disassemble-bss
                         Print the disassembled bss section of the output program
                         into <output_file>.dis_bss file
  -dd, --disassemble-data
                         Print the disassembled data section of the output
                         program into <output_file>.dis_data file
  -diap, --dump-initial-ascii-profile
                         Dump initial profile information in ASCII format into
                         <program>.aprof.init (requires the -f flag)
  -dim, --dump-instruction-mix
                         Dump instruction mix statistics based on gathered
                         profile information
  -dm, --dump-mapper     Print a map of basic blocks and static variables with
                         their respective new -> old addresses into a
                         <program>.mapper file
  -o <output_file>, --output-file <output_file>
                         Set the name of the output file. The default
                         instrumented file is <program>.instr. The default
                         optimized file is <program>.fdpr
  -pif, --print-inlined-funcs
                         Print the list of inlined functions along with their
                         corresponding calling functions, in ASCII format into a
                         <program>.inlined file (requires the -si or -i or -isf
                         flags)
  -ppcf, --print-prof-counts-file
                         Print the profiling counters in ASCII format into a
                         <program>.counts file (requires the -f flag)
  -simo, --single-input-multiple-outputs
                         Optimize in parallel into multiple outputs as specified
                         by option sets read from stdin
  -sf, --strip-file      Strip the optimized output file
  -spe, --speculative-profile-enhancement
                         Complements given partial profile information of basic
                         blocks' frequencies, i.e., transforms basic block
                         profile to a complete edge profile
  -spedir <directory>, --spe-directory <directory>
                         Set the directory into which SPE executables will be
                         extracted and from which they will be encapsulated
  -enc, --encapsulate    Encapsulate SPE executables present in the PPE input
                         (see --spe-directory)


  General Options:
  -gro, --generate-relinkable-output
                         Generate relinkable output
  -h, --help             Print online usage help
  -m <machine-model>, --machine <machine-model>
                         Generate code for the specified machine model. Target
                         machine can be one of the following models: power2,
                         power3, ppc405, ppc440, power4, ppc970, power5, power6,
                         spe, spe_edp. Default is set to no machine
  -q, --quiet            Set quiet output mode, suppressing informational
                         messages
  -st <stat_file>, --statistics <stat_file>
                         Output statistics information to <stat_file>. If
                         <stat_file> is '-', output goes to standard output. See
                         --verbose for the default
  -V, --version          Print version
  -v <level>, --verbose <level>
                         Set verbose output mode level. When set, various
                         statistics about the target optimized program are
                         printed into file <program>.stat. Allowed level range
                         is between (0,3). Default is set to 0
  -cell, --cell-supervisor
                         Integrated PPE/SPE processing. Perform SPE extraction,
                         processing, and encapsulation automatically prior to
                         PPE processing
  -armember              For archive files - list of archive members to be
                         optimized, if -armember is not specified, all members
                         will be optimized

Platform settings from MPI2007_flags.1

IBM XL Compilers with AIX 5L: Compiler Flags, Environment Settings and Utilities

• drmgr -r -c cpu
Deconfigures one core from the active partition. Use it N times to deconfigure N cores.
• smtctl -m on|off -w now|boot

Controls the enabling and disabling of processor simultaneous multi-threading mode.
• vmo -r -o lgpg_regions=n -o lgpg_size=16777216

Sets the size of large pages to 16M, and set the number to use, with -r, takes effect on the next IPL.
• bosboot -q

Regenerates the IPL boot to set the options specified with smtctl and vmo.
• bindprocessor $$ <n>

The next program is to be bound to the specified processor.

Environment variables set before the run:

• MEMORY_AFFINITY=MCM

Cause the OS to alloc memory "closest" to the chip that first requests it.
• MALLOCOPTIONS=POOL

Selects the OS malloc option that allocates/frees small objects very quickly.

Flag description origin markings:

	Indicates that the flag description came from the user flags file.
	Indicates that the flag description came from the suite-wide flags file.
	Indicates that the flag description came from a per-benchmark flags file.

For questions about the meanings of these flags, please contact the tester.
For other inquiries, please contact webmaster@spec.org
Copyright 2006-2010 Standard Performance Evaluation Corporation
Tested with SPEC MPI2007 v1.0.
Report generated on Tue Jul 22 13:34:38 2014 by SPEC MPI2007 flags formatter v1445.