Difference between revisions of "Intel Compiler 2016"
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== Compiler Flags == | |||
Here are some compiler flags which may increase the performance of your code | |||
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! Flag | |||
!Description | |||
|- | |||
| ''-O2'', ''-O3'', ''-fast'' | |||
| Enable optimization to maximise speed. ''-O3'' and ''-fast'' is more agressive. | |||
|- | |||
| ''-xHost'' | |||
| Enables the usage SIMD extensions of host which allows vectorizing of floating point operations. | |||
|- | |||
| ''-fp-model'' '''MODEL''' | |||
| Defines the consistency level of floating point operations. Allowed '''MODEL''' are: ''fast'', ''precise'', ''strict'', ''except'' | |||
|- | |||
| ''-[no-]prec-div'', ''-[no-]prec-sqrt'', ''-[no-]fast-transcendentals'' | |||
| Enables faster computations of divisions, square roots and transcendental functions with a reduced accruacy, respectively. | |||
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== Advantages == | == Advantages == | ||
Revision as of 09:38, 16 February 2017
The Intel compiler is available as a module and is currently installed in version 2016.3.210. To find out which versions are installed you can use the command
module av icc
which currently shows
-------------------- /cm/shared/uniol/modulefiles/COMPILER --------------------- intel/2016.3.210
To load the module of your choice type e.g.
module load intel/2016.3.210
The commands for the available languages are
| Name | Description |
|---|---|
| icc | C compiler |
| icpc | C++ compiler |
| ifort | Fortran compiler |
Compiler Flags
Here are some compiler flags which may increase the performance of your code
| Flag | Description |
|---|---|
| -O2, -O3, -fast | Enable optimization to maximise speed. -O3 and -fast is more agressive. |
| -xHost | Enables the usage SIMD extensions of host which allows vectorizing of floating point operations. |
| -fp-model MODEL | Defines the consistency level of floating point operations. Allowed MODEL are: fast, precise, strict, except |
| -[no-]prec-div, -[no-]prec-sqrt, -[no-]fast-transcendentals | Enables faster computations of divisions, square roots and transcendental functions with a reduced accruacy, respectively. |
Advantages
