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README
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This directory contains the PSBLAS library, version 3.5.
The architecture of the Fortran 2003 sparse BLAS is described in
S. Filippone, A. Buttari:
The architecture of the Fortran 2003 sparse BLAS is described in:
S. Filippone, A. Buttari
Object-Oriented Techniques for Sparse Matrix Computations in Fortran
2003,
ACM Trans. on Math. Software, vol. 38, No. 4, 2012.
2003, ACM Trans. on Math. Software, vol. 38, No. 4, 2012.
The ideas are explored further with the paper:
V. Cardellini, S. Filippone and D. Rouson
Design Patterns for sparse-matrix computations on
hybrid CPU/GPU platforms,
Scientific Programming, 22(2014), pp.1-19.
Design Patterns for sparse-matrix computations on hybrid CPU/GPU
platforms, Scientific Programming, 22(2014), pp.1-19.
Version 1.0 of the library was described in:
Version 1.0 of the library is described in:
S. Filippone, M. Colajanni
PSBLAS: A library for parallel linear algebra computation on sparse matrices
ACM Trans. on Math. Software, 26(4), Dec. 2000, pp. 527-550.
PSBLAS: A library for parallel linear algebra computation on sparse
matrices, ACM Trans. on Math. Software, 26(4), Dec. 2000, pp. 527-550.
UTILITIES
@ -30,23 +25,20 @@ Harwell-Boeing and MatrixMarket file formats.
DOCUMENTATION
See docs/psblas-3.5.pdf; an HTML version of the same document is
available in docs/html.
Please consult the sample programs, especially
available in docs/html. Please consult the sample programs, especially
test/pargen/psb_[sd]_pde[23]d.f90
OTHER SOFTWARE CREDITS
We originally included a modified implementation of some of the
Sparker (serial sparse BLAS) material; this has been completely
rewritten, way beyond the intention(s) and responsibilities of the
original developers.
We originally included a modified implementation of some of the Sparker
(serial sparse BLAS) material; this has been completely rewritten, way
beyond the intention(s) and responsibilities of the original developers.
The main reference for the serial sparse BLAS is:
Duff, I., Marrone, M., Radicati, G., and Vittoli, C.
Level 3 basic linear algebra subprograms for sparse matrices: a user
level interface
ACM Trans. Math. Softw., 23(3), 379-401, 1997.
level interface, ACM Trans. Math. Softw., 23(3), 379-401, 1997.
INSTALLING
@ -56,8 +48,8 @@ prerequisites (see also SERIAL below):
1. A working version of MPI
2. A version of the BLAS; if you don't have a specific version for
your platform you may try ATLAS available from
2. A version of the BLAS; if you don't have a specific version for your
platform you may try ATLAS available from
http://math-atlas.sourceforge.net/
3. We have had good results with the METIS library, from
@ -68,49 +60,49 @@ prerequisites (see also SERIAL below):
4. If you have the AMD package of Davis, Duff and Amestoy, you can
specify --with-amd (see ./configure --help for more details).
The configure script will generate a Make.inc file suitable for
building the library.
The script is capable of recognizing the needed libraries with their
default names; if they are in unusual places consider adding the paths
with --with-libs, or explicitly specifying the names in --with-blas, etc.
Please note that a common way for the configure script to fail is to
specify inconsistent MPI vs. plain compilers, either directly or
indirectly via environment variables; e.g. specifying the Intel
compiler with FC=ifort while at the same time having an MPIFC=mpif90
which points to GNU Fortran.
The best way to avoid this situation is (in our opinion) to use the
environment modules package (see http://modules.sourceforge.net/), and
load the relevant variables with (e.g.)
The configure script will generate a Make.inc file suitable for building
the library. The script is capable of recognizing the needed libraries
with their default names; if they are in unusual places consider adding
the paths with --with-libs, or explicitly specifying the names in
--with-blas, etc. Please note that a common way for the configure script
to fail is to specify inconsistent MPI vs. plain compilers, either
directly or indirectly via environment variables; e.g. specifying the
Intel compiler with FC=ifort while at the same time having an
MPIFC=mpif90 which points to GNU Fortran. The best way to avoid this
situation is (in our opinion) to use the environment modules package
(see http://modules.sourceforge.net/), and load the relevant
variables with (e.g.)
module load gnu46 openmpi
This will delegate to the modules setup to make sure that the version
of openmpi in use is the one compiled with the gnu46 compilers.
After the configure script has completed you can always tweak the
Make.inc file yourself.
This will delegate to the modules setup to make sure that the version of
openmpi in use is the one compiled with the gnu46 compilers. After the
configure script has completed you can always tweak the Make.inc file
yourself.
After you have Make.inc fixed, run
make
to compile the library; go to the test directory and its
subdirectories to get test programs done.
If you specify --prefix=/path you can do make install and the
libraries will be installed under /path/lib, while the module files
will be installed under /path/include.
to compile the library; go to the test directory and its subdirectories
to get test programs done. If you specify --prefix=/path you can do make
install and the libraries will be installed under /path/lib, while the
module files will be installed under /path/include.
SERIAL
Configuring with --enable-serial will provide a fake MPI stub library
that enables running in pure serial mode; no MPI installation is
needed in this case (but note that the fake MPI stubs are only
guaranteed to cover what we use internally, it's not a complete
replacement).
that enables running in pure serial mode; no MPI installation is needed
in this case (but note that the fake MPI stubs are only guaranteed to
cover what we use internally, it's not a complete replacement).
LONG INTEGERS
We have an experimental flag --enable-long-integers that will enable having
8-byte integer data, allowing an index space larger than 2G; some
We have an experimental flag --enable-long-integers that will enable
having 8-byte integer data, allowing an index space larger than 2G; some
small cases have been tested but we do not offer full guarantee (yet).
TODO:
Fix all reamining bugs. Bugs? We dont' have any ! ;-)
@ -119,9 +111,9 @@ The PSBLAS team.
RELATED SOFTWARE
If you are looking for more sophisticated preconditioners, you may be
interested in the package MLD2P4 from http://github.com/sfilippone/mld2p4-2
interested in the package MLD2P4 from
http://github.com/sfilippone/mld2p4-2
Contact: https://github.com/sfilippone/psblas3

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