CPU2006 Flag Description
Supermicro Motherboard X7DB8

Base Optimization Flags

C benchmarks

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

C++ benchmarks

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qcxx_features
  • 
  • CXXOPTIMIZE

  • Enable C++ Exception Handling and RTTI
    This option has the same effect as specifying /GX /GR.

  • Includes:
    • -GX
    • -GR
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

Fortran benchmarks

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

Benchmarks using both Fortran and C

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

Peak Optimization Flags

C benchmarks

433.milc

• • -Qprof_gen
  • 
  • PASS1_CFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qunroll2
  • 
  • OPTIMIZE

  • Tells the compiler the maximum number of times to unroll loops.

• • -Oa
  • 
  • OPTIMIZE

  • Tells the compiler to assume there is no aliasing.

• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

470.lbm

• • -Qprof_gen
  • 
  • PASS1_CFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qunroll2
  • 
  • OPTIMIZE

  • Tells the compiler the maximum number of times to unroll loops.

• • -Qscalar-rep-
  • 
  • OPTIMIZE

  • This option enables scalar replacement performed during loop transformation. To use this option, you must also specify O3. -Qscalar-rep- disables this optimization.

• • -Qprefetch
  • 
  • OPTIMIZE

  • Enable/disable(DEFAULT) the compiler to generate prefetch instructions to prefetch data.

• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

482.sphinx3

• • -Qprof_gen
  • 
  • PASS1_CFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qunroll2
  • 
  • OPTIMIZE

  • Tells the compiler the maximum number of times to unroll loops.

• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

C++ benchmarks

444.namd

• • -Qprof_gen
  • 
  • PASS1_CXXFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CXXFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Oa
  • 
  • OPTIMIZE

  • Tells the compiler to assume there is no aliasing.

• • -Qcxx_features
  • 
  • CXXOPTIMIZE

  • Enable C++ Exception Handling and RTTI
    This option has the same effect as specifying /GX /GR.

  • Includes:
    • -GX
    • -GR
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

447.dealII

• • -Qprof_gen
  • 
  • PASS1_CXXFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CXXFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qprefetch
  • 
  • OPTIMIZE

  • Enable/disable(DEFAULT) the compiler to generate prefetch instructions to prefetch data.

• • -Qcxx_features
  • 
  • CXXOPTIMIZE

  • Enable C++ Exception Handling and RTTI
    This option has the same effect as specifying /GX /GR.

  • Includes:
    • -GX
    • -GR
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

450.soplex

• • -Qprof_gen
  • 
  • PASS1_CXXFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CXXFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qcxx_features
  • 
  • CXXOPTIMIZE

  • Enable C++ Exception Handling and RTTI
    This option has the same effect as specifying /GX /GR.

  • Includes:
    • -GX
    • -GR
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

453.povray

• • -Qprof_gen
  • 
  • PASS1_CXXFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CXXFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qansi-alias
  • 
  • OPTIMIZE

  • Enable/disable(DEFAULT) use of ANSI aliasing rules in optimizations; user asserts that the program adheres to these rules.

• • -Qcxx_features
  • 
  • CXXOPTIMIZE

  • Enable C++ Exception Handling and RTTI
    This option has the same effect as specifying /GX /GR.

  • Includes:
    • -GX
    • -GR
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

• • shlw32m.lib
  • 
  • EXTRA_LIBS

  • MicroQuill SmartHeap Library available from http://www.microquill.com/

• • -link /FORCE:MULTIPLE
  • 
  • LDOUT

  • Enable SmartHeap library usage by forcing the linker to ignore multiple definitions

Fortran benchmarks

410.bwaves

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

416.gamess

• • -Qprof_gen
  • 
  • PASS1_FFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_FFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Qunroll2
  • 
  • OPTIMIZE

  • Tells the compiler the maximum number of times to unroll loops.

• • -Ob0
  • 
  • OPTIMIZE

  • Specifies the level of inline function expansion.

    Ob0 - Disables inlining of user-defined functions. Note that statement functions are always inlined.

    Ob1 - Enables inlining when an inline keyword or an inline attribute is specified. Also enables inlining according to the C++ language.

    Ob2 - Enables inlining of any function at the compiler's discretion.

• • -Qansi-alias
  • 
  • OPTIMIZE

  • Enable/disable(DEFAULT) use of ANSI aliasing rules in optimizations; user asserts that the program adheres to these rules.

• • -Qscalar-rep-
  • 
  • OPTIMIZE

  • This option enables scalar replacement performed during loop transformation. To use this option, you must also specify O3. -Qscalar-rep- disables this optimization.

• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

434.zeusmp

• • -Qprof_gen
  • 
  • PASS1_FFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_FFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -QxT
  • 
  • OPTIMIZE

  • Code is optimized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3. The resulting code may contain unconditional use of features that are not supported on other processors. This option also enables new optimizations in addition to Intel processor-specific optimizations including advanced data layout and code restructuring optimizations to improve memory accesses for Intel processors.

    Do not use this option if you are executing a program on a processor that is not an Intel processor. If you use this option on a non-compatible processor to compile the main program (in Fortran) or the function main() in C/C++, the program will display a fatal run-time error if they are executed on unsupported processors.

• • -O2
  • 
  • OPTIMIZE

  • Enables optimizations for speed. This is the generally recommended optimization level. This option also enables:
    - Inlining of intrinsics
    - Intra-file interprocedural optimizations, which include:
    - inlining
    - constant propagation
    - forward substitution
    - routine attribute propagation
    - variable address-taken analysis
    - dead static function elimination
    - removal of unreferenced variables
    - The following capabilities for performance gain:
    - constant propagation
    - copy propagation
    - dead-code elimination
    - global register allocation
    - global instruction scheduling and control speculation
    - loop unrolling
    - optimized code selection
    - partial redundancy elimination
    - strength reduction/induction variable simplification
    - variable renaming
    - exception handling optimizations
    - tail recursions
    - peephole optimizations
    - structure assignment lowering and optimizations
    - dead store elimination
    

    On IA-32 Windows platforms, -O2 sets the following:

    /Og, /Oi-, /Os, /Oy, /Ob2, /GF (/Qvc7 and above), /Gf (/Qvc6 and below), /Gs, and /Gy.

  • Includes:
    • -Oi-
    • -Gs
    • -Oy
    • -Gy
    • -Os
    • -GF
    • -Gf
    • -Ob_n
    • -Og
    • -O1
      • -unroll_n
      • -Oi-
      • -Op-
      • -Oy
      • -Gy
      • -Os
      • -GF
      • -Gf
      • -Ob_n
      • -Og
• • -Qprec_div-
  • 
  • OPTIMIZE
  • (disable/enable[default] -Qprec-div[-])

    -Qprec-dev improves precision of floating-point divides. It has a slight impact on speed. -Qprec-dev- disables this option and enables optimizations that give slightly less precise results than full IEEE division.

    When you specify -Qprec-dev- along with some optimizations, such as -xN and -xB (Linux) or /QxN and /QxB (Windows), the compiler may change floating-point division computations into multiplication by the reciprocal of the denominator. For example, A/B is computed as A * (1/B) to improve the speed of the computation.

    However, sometimes the value produced by this transformation is not as accurate as full IEEE division. When it is important to have fully precise IEEE division, do not use -Qprec-dev- which will enable the default -Qprec-dev and the result is more accurate, with some loss of performance.

• • -Qunroll0
  • 
  • OPTIMIZE

  • Tells the compiler the maximum number of times to unroll loops.

• • -Qscalar-rep-
  • 
  • OPTIMIZE

  • This option enables scalar replacement performed during loop transformation. To use this option, you must also specify O3. -Qscalar-rep- disables this optimization.

• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

437.leslie3d

• • -Qprof_gen
  • 
  • PASS1_FFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_FFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

459.GemsFDTD

• • basepeak = yes

465.tonto

• • Same as 437.leslie3d

Benchmarks using both Fortran and C

435.gromacs

• • -Qprof_gen
  • 
  • PASS1_CFLAGS, PASS1_FFLAGS, PASS1_LDFLAGS

  • Instrument program for profiling for the first phase of two-phase profile guided otimization. This instrumentation gathers information about a program's execution paths and data values but does not gather information from hardware performance counters. The profile instrumentation also gathers data for optimizations which are unique to profile-feedback optimization.

• • -Qprof_use
  • 
  • PASS2_CFLAGS, PASS2_FFLAGS, PASS2_LDFLAGS

  • Instructs the compiler to produce a profile-optimized executable and merges available dynamic information (.dyn) files into a pgopti.dpi file. If you perform multiple executions of the instrumented program, -prof-use merges the dynamic information files again and overwrites the previous pgopti.dpi file.
    Without any other options, the current directory is searched for .dyn files

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • -Oa
  • 
  • OPTIMIZE

  • Tells the compiler to assume there is no aliasing.

• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

436.cactusADM

• • basepeak = yes

454.calculix

• • -fast
  • 
  • OPTIMIZE

  • The -fast option enhances execution speed across the entire program by including the following options that can improve run-time performance:

    -O3   (maximum speed and high-level optimizations)

    -ipo (enables interprocedural optimizations across files)

    -xT  (generate code specialized for Intel(R) Core(TM)2 Duo processors, Intel(R) Core(TM)2 Quad processors and Intel(R) Xeon(R) processors with SSSE3)

    -Qprec-div- (disable -prec-div) where -Qprec-div improves precision of FP divides (some speed impact)

    To override one of the options set by /fast, specify that option after the -fast option on the command line. The exception is the xT or QxT option which can't be overridden. The options set by /fast may change from release to release.

  • Includes:
    • -O3
      • -GF
      • -Gf
      • -Ob_n
      • -O2
        • -Oi-
        • -Gs
        • -Oy
        • -Gy
        • -Os
        • -GF
        • -Gf
        • -Ob_n
        • -Og
        • -O1
          • -unroll_n
          • -Oi-
          • -Op-
          • -Oy
          • -Gy
          • -Os
          • -GF
          • -Gf
          • -Ob_n
          • -Og
    • -Qipo
    • -QxT
    • -Qprec-div
• • /F950000000
  • 
  • EXTRA_LDFLAGS

  • set the stack reserve amount specified to the linker

481.wrf

• • Same as 454.calculix