VTune

Intel® VTune™ Profiler is a performance analysis tool for serial and multithreaded applications. Use VTune Profiler: to determine the most time-consuming (hot) functions in your application to discover on very fine-grained level which section of code (loop, source code line or even data field) do not effectively utilize available processor time to analyse communication behavior that affects threaded performance for accurate analysis with low overhead for serial and multithreaded applications MPI (MPT, OpenMPI) OpenMP, Intel® oneAPI Threading Building Blocks, native threads Languages: C/C++/C#, Fortran, Python and others

Developer: Intel Platforms: Hawk, Vulcan Category: Performance Analyzer License: Commercial Website: Intel® VTune™ Profiler homepage

Using Intel VTune

To perform the performance analyse of your application with VTune you don’t need special compiler wrapper or libraries. Just recompile and relink your code with extra –g option in order to include debug information. VTune works well for dynamically linked binaries. Here you can find some tips for statically linked binaries Example:

module load compiler/intel 
module load performance/vtune # set up VTune environment
module load mpi/impi          # if MPI needed 

Compilation example:

ifort -g -O2 prog.f90

Analyzing MPI applications:

 mpirun –n4 amplxe-cl -c hotspots –r my_result -- path_to_my_app

Using Intel VTune on Cray machines

Load the necessary module. For example:

module swap PrgEnv-cray PrgEnv-intel # set up MPI environment too 
module load performance/vtune        # set up VTune environment

Compilation example:

ftn -dynamic -g -O2 prog.f90

Analyzing MPI applications:

 aprun –n4 amplxe-cl -c hotspots –r myResult-@@@{at} -- path_to_my_app

See also

• Software Development Tools, Compilers & Libraries

External links

• Intel® VTune™ Amplifier XE homepage