[petsc-users] Building with MKL 10.3

[Preston, Eric - IS]

Greetings,

I had some difficulty compiling PETSc with MKL 10.3 (on 64-bit linux). The config system definitely wasn't able to deal with this version. For a sequential, 32-bit integer compile the Intel link advisor tells me to use the following:

-Wl,--start-group $(MKLROOT)/lib/intel64/libmkl_intel_lp64.a $(MKLROOT)/lib/intel64/libmkl_sequential.a $(MKLROOT)/lib/intel64/libmkl_core.a -Wl,--end-group -lpthread

So I added this line to BlasLapack.py (in generateGuesses, around line 210):

yield ('User specified MKL10.3 Linux-intel64 installation root', None, [os.path.join(dir,'lib','intel64','libmkl_lapack95_lp64.a'),'mkl_intel_lp64', 'mkl_sequential', 'mkl_core', 'pthread'], 1) #efp

Note in this distribution the LAPACK libs are called libmkl_lapack95_ilp64.a and libmkl_lapack95_lp64.a (for 64 and 32-bit integers, respectively). Also note this version uses /lib/intel64 instead of /lib/emt64. It came with Intel ComposerXE 2011 (the icc version is 12.0.2).

I was able the build the PETSC libraries in this way, however to use the multi-threaded MKL I had to change 'libmkl_sequential.a' to 'libmkl_intel_thread.a' AND add the compiler option -openmp. To get this to work I had to add CFLAGS=-openmp.

Now on to adding mpi...

Eric Preston


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