topic Is there very simple ScaLapack sample like "Hello World" ? in Intel® oneAPI Math Kernel Library

Is there very simple ScaLapack sample like "Hello World" ?

Takuya_Sekikawa — Tue, 07 Aug 2012 09:38:15 GMT

Hi,

I wrote simple test program like HelloWorld of ScaLapack, then tried to compile withwith MKL 10.3 (C++ Composer XE-2011)
but unknown link error occurred.

ipo: warning #11021: unresolved symbol: for_write_seq_fmt
1> Referenced in mkl_scalapack_lp64.lib(pxerbla.obj)
1>ipo: warning #11021: unresolved symbol: for_write_seq_fmt_xmit
1> Referenced in mkl_scalapack_lp64.lib(pxerbla.obj)

link libraries are:
mkl_core.lib mkl_intel_lp64.lib mkl_intel_thread.lib mkl_blas95_lp64.lib mkl_lapack95_lp64.lib mkl_scalapack_lp64.lib mkl_blacs_mpich2_lp64.lib libiomp5md.lib mpi.lib cxx.lib

Seems mkl_scalapack_lp64.lib uses for_write_seq_fmt funciton, but I cannot found out which library contains this symbol.

my question is:
[1] how to avoid link error using ScaLapack on MKL?
[2] Is there any sample code of ScaLapack on MKL?

Thanks in advance

Is there very simple ScaLapack sample like "Hello World" ?

Gennady_F_Intel — Tue, 07 Aug 2012 12:16:33 GMT

for linking - pls use MKL Linker Adviser.

for example - you can find some examples into \examples\pblasc.

Is there very simple ScaLapack sample like "Hello World" ?

Takuya_Sekikawa — Wed, 08 Aug 2012 03:58:41 GMT

Thanks for reply.

I tried both MKL Linker Adviser and exmplaes you mentioned.

I used output of MKL Linker Adviser, but results was same.
(still causes link error)

Also, I tried to compleexamples/pblasc like following, but seems that it needs fortran compiler (ifort)

---------------------
C:\tmp\scalapack>nmake arch=intel64 mpi=mpich2 mpidir=C:\MPICH2 libdir="c:\Program Files (x86)\intel\ComposerXE-2011\mkl" libtype=static exe
---------------------

I installed MPICH2 on C:\MPICH2 directory and it works with no problem.
then, nmake stopped with following error message:

---------------------

Microsoft Program Maintenance Utility Version 6.00.9782.0

if not exist "obj_intel64_static_mpich2_lp64" mkdir "obj_intel64_static_mpich2_lp64"

ifort /c /O3 /w .\psludriver.f /object:obj_intel64_static_mpich2_lp64\psludriver.obj
(here reports error like "cannot found ifort")
---------------------

I bought C/C++ version of Compose XE-2011. (no fortran compiler included version)

this means to compile those example,it needs ifort.Am I wrong?
(Actually, the subdirectories under examples/pblasc directory, there are lots of .f files)

Takuya

Is there very simple ScaLapack sample like "Hello World" ?

Takuya_Sekikawa — Wed, 08 Aug 2012 07:29:47 GMT

> (Actually, the subdirectories under examples/pblasc directory, there are lots of .f files)

Sorry. I got confused.

there was no .f files under mkl/examples/pblasc/source directory.
(the above .f I mentioned is under mkl/tests/scalapack directory)

I'll try pblasc exmple.

Takuya

Is there very simple ScaLapack sample like "Hello World" ?

Takuya_Sekikawa — Thu, 09 Aug 2012 04:22:23 GMT

Once I uninstalled ComposerXE 2011, then re-installed latest version (ComposerXE 2011, update 11),
everythings work with no problem. (link error disappeared)

and also pblasc example has successfully compiled and executed.

Thanks.

Takuya