HPC/Applications/mkl

Vendor Documentation

• Intel Math Kernel Library - Full Documentation
  • Release notes, User guides etc.
• since v10 includes the formerly separate Cluster MKL (providing ScaLapack et al.)
• provides BLAS, Lapack, ScaLapack, FFTs (including an FFTW interface)
• Link line advisor
  • alternate (static text)

Carbon specifics

• Avoid specifying absolute library paths in your Makefile unless you wish to select a specific version. The user environment is normally correctly set up.
• Loading the MKL module does not yet tell the linker where to find the library. The most convenient place is to modify the Makefile similar to the following:

LDFLAGS += -L$MKLROOT/lib/em64t

or, starting with 10.3.x:

LDFLAGS += -L$MKLROOT/lib/intel64

• Link examples:

 # Sequential:
   -lmkl_intel_lp64 -lmkl_sequential -lmkl_core -lpthread

 # OpenMP multi-threaded:
   -lmkl_intel_lp64 -lmkl_intel_thread -lmkl_core -liomp5 -lpthread

• The FFTW interface of the MKL can be linked by prefixing the above options with one of:

-lfftw2xc_intel
-lfftw2xf_intel
-lfftw3xc_intel
-lfftw3xf_intel

Choose the appropriate version between bindings for FFTW v2 vs. v3 and C vs. Fortran.

• see HPC/Carbon_Cluster_-_Getting_started#Example_job_file for controlling OpenMP execution.