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| Subject: |
NAG SMP 64-bit library available for evaluation on Seaborg |
| Author: |
Harsh Anand <harsh_at_nersc.gov> |
| Date: |
2002-02-05 14:21:25 |
| Dear SP Users,
NERSC is considering buying license for the NAG SMP library for the
IBM SP (seaborg.nersc.gov). We have obtained the library for a one
month evaluation . Please test it and send your feedback/comments to
Harsh Anand (hanand@lbl.gov).
The NAG SMP Library is a library of Fortran 77 routines optimised for
use on Symmetric Multi-processor (SMP) machines which are
multi-processor platforms with a (virtual or real) shared memory (such
as a single node of the SP). It contains all the routines contained
in the NAG Fortran Library. The subroutine interfaces of the SMP
version are identical to those of the NAG Fortran library; this makes
porting from NAG Fortran library to NAG SMP library trivial -- just
recompile and relink your code to the SMP Library to take advantage of
the capabilities of the architecture IBM SP Power3.
To use the NAG SMP library:
1. First load the module "nag_smp64"
%module load nag_smp64
2. Then compile and link with the library, e.g.
xlf_r -q64 -qsmp=omp -qnosave -o driver.exe driver.f $NAG_SMP64
where driver.f is your application program.
3. Set the environment variable OMP_NUM_THREADS to the number of
available processors. E.g. for C-shell:
setenv OMP_NUM_THREADS 16
3. Then execute the program in the "normal" way:
./driver.exe
To run example program, (say) c06eaf, do the following:
%nagsmpexample c06eaf
It will copy the example program and its data into the files c06eafe.f
and c06eafe.d in the current directory and process them to produce the
example program results.
Please note 32-bit version of this library is not yet available for
AIX. You cann't use the supported MPI libraries with nag_smp64.
For implementation-specific detail see "Users' Note" at:
http://hpcf.nersc.gov/software/libs/math/nag_smp/un.html
General Description: http://www.nag.com/numeric/fl/FSdescription.asp
Link to full documentation:
http://www.nag.com/numeric/FL/manual/html/FSlibrarymanual.asp
List of routines that are enhanced:
http://www.nag.com/numeric/FL/manual19/pdf/genint/news_fs20.pdf
Regards,
Harsh Anand
User Services Group email: harsh@nersc.gov
NERSC Division phone: (510) 486-5575
Berkeley Lab fax: (510) 486-7520
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