OMP2012 Flag Description
Bull SAS Bull bullx R421 E4

Base Optimization Flags

C benchmarks

• • -openmp
  • 
  • OPTIMIZE

  • Enables the parallelizer to generate multithreaded code based on OpenMP* directives.

• • -O3
  • 
  • OPTIMIZE

  • Enables O2 optimizations plus more aggressive optimizations, such as prefetching, scalar replacement, and loop and memory access transformations. Enables optimizations for maximum speed.

• • -xCORE-AVX2
  • 
  • OPTIMIZE

  • Optimizes for Intel processors with Advanced Vector Extensions 2 (AVX2).

• • -mcmodel=medium
  • 
  • OPTIMIZE

  • Defines the memory model. Possible values are: - small: restrict code and data to the first 2GB of address space. All accesses of code and data can be done with Instruction Pointer (IP)-relative addressing. - medium: restrict code to the first 2GB, places no memory restriction on data. Accesses of code can be done with IP-relative addressing, but accesses of data must be done with absolute addressing. - large: Places no memory restriction on code or data. All accesses of code and data must be done with absolute addressing.

• • -shared-intel
  • 
  • OPTIMIZE

  • Causes Intel-provided libraries to be linked in dynamically.

C++ benchmarks

• • -openmp
  • 
  • OPTIMIZE

  • Enables the parallelizer to generate multithreaded code based on OpenMP* directives.

• • -O3
  • 
  • OPTIMIZE

  • Enables O2 optimizations plus more aggressive optimizations, such as prefetching, scalar replacement, and loop and memory access transformations. Enables optimizations for maximum speed.

• • -xCORE-AVX2
  • 
  • OPTIMIZE

  • Optimizes for Intel processors with Advanced Vector Extensions 2 (AVX2).

• • -mcmodel=medium
  • 
  • OPTIMIZE

  • Defines the memory model. Possible values are: - small: restrict code and data to the first 2GB of address space. All accesses of code and data can be done with Instruction Pointer (IP)-relative addressing. - medium: restrict code to the first 2GB, places no memory restriction on data. Accesses of code can be done with IP-relative addressing, but accesses of data must be done with absolute addressing. - large: Places no memory restriction on code or data. All accesses of code and data must be done with absolute addressing.

• • -shared-intel
  • 
  • OPTIMIZE

  • Causes Intel-provided libraries to be linked in dynamically.

Fortran benchmarks

• • -openmp
  • 
  • OPTIMIZE

  • Enables the parallelizer to generate multithreaded code based on OpenMP* directives.

• • -O3
  • 
  • OPTIMIZE

  • Enables O2 optimizations plus more aggressive optimizations, such as prefetching, scalar replacement, and loop and memory access transformations. Enables optimizations for maximum speed.

• • -xCORE-AVX2
  • 
  • OPTIMIZE

  • Optimizes for Intel processors with Advanced Vector Extensions 2 (AVX2).

• • -mcmodel=medium
  • 
  • OPTIMIZE

  • Defines the memory model. Possible values are: - small: restrict code and data to the first 2GB of address space. All accesses of code and data can be done with Instruction Pointer (IP)-relative addressing. - medium: restrict code to the first 2GB, places no memory restriction on data. Accesses of code can be done with IP-relative addressing, but accesses of data must be done with absolute addressing. - large: Places no memory restriction on code or data. All accesses of code and data must be done with absolute addressing.

• • -shared-intel
  • 
  • OPTIMIZE

  • Causes Intel-provided libraries to be linked in dynamically.