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hypre/CHANGELOG
kolev b75528f0b4 Added a note for AMS solver options.
2008-05-07 20:45:18 +00:00

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#BHEADER**********************************************************************
# Copyright (c) 2007, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
# Written by the HYPRE team. UCRL-CODE-222953.
# All rights reserved.
#
# This file is part of HYPRE (see http://www.llnl.gov/CASC/hypre/).
# Please see the COPYRIGHT_and_LICENSE file for the copyright notice,
# disclaimer, contact information and the GNU Lesser General Public License.
#
# HYPRE is free software; you can redistribute it and/or modify it under the
# terms of the GNU General Public License (as published by the Free Software
# Foundation) version 2.1 dated February 1999.
#
# HYPRE is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the IMPLIED WARRANTY OF MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the terms and conditions of the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# $Revision$
#EHEADER**********************************************************************
#=============================================================================
# This file chronicles user-level changes to hypre, beginning with the most
# recent release.
#=============================================================================
#====================================
Version 2.3.2a released, 2008/05/08.
- Fixed a couple of bugs associated with SStructGridSetNeighborPart.
- Added absolute convergence tolerance stopping criteria to GMRES, CG, and
BiCGStab (See HYPRE_GMRESSetAbsoluteTolerance, HYPRE_PCGSetAbsoluteTolerance,
or HYPRE_BiCGSTABSetAbsoluteTolerance in the reference manual for details).
- Updated error checking for CG and BiCGStab.
- Fixed a bug in AMG when the maximum number of levels is set to 1.
- Added two new solver types to AMS: a Hiptmair-like smoother (type 0), and
one based on a block 4x4 coarse-grid matrix (type 20).
#====================================
Version 2.3.1a released, 2008/01/31.
- A bug fix (uninitialized variables introduced when AMS was added to
the FEI preconditioner list).
- Fixed a memory allocation bug in new SStruct SetNeighborPart feature.
- Added a new option for the Schwarz smoothers
(HYPRE_BoomerAMGSetSchwarzUseNonSymm and HYPRE_SchwarzSetNonSymm) to use LU
instead of Cholesky LAPACK functions to invert the matrix blocks.
- Fixed a bug with the Schwarz smoothers and the ESSL compile.
#====================================
Version 2.3.0a released, 2008/01/28.
- Completed the implementation of SStructGridSetNeighborBox to work for all
variable types (not just cell-centered). In the process, we discovered that
the interface design for this routine can result in ambiguous coordinate
transformations between parts, so the new SetNeighborPart routine (below)
should be used instead.
- Introduced the SStructGridSetNeighborPart routine. Users migrating from
SetNeighborBox to this new routine only need to change the name ("Box" to
"Part") and append an additional argument 'index_dir'. See the reference
manual for details.
- The SStructSplit solver can now be used as a standalone solver (before, it
could only be used as a preconditioner). Added HYPRE_Jacobi as an option to
SetStructSolver.
- Added Get(Box)Values routines for Struct/SStruct Matrix.
- Added nodal interpolation schemes to BoomerAMG for systems problems.
- Added capability to change Euclid runtime parameters using individual
functions.
- Improved use of Euclid as smoother in BoomerAMG.
- Fixed two potential bugs in BoomerAMG.
- Fixed a major bug with the OpenMP code in hypre (beginning with v1.7.5b,
OpenMP support was effectively disabled in the code). Also made several
additional OpenMP changes/fixes.
#====================================
Version 2.2.0b released, 2007/09/20.
- Renovate the FEI block preconditioner which will be useful for ALE3D
simulation of mixed variable type problem
#====================================
Version 2.1.0a released, 2007/06/25.
- Added the CGC and CGC-E coarsening algorithms, which have been developed
and implemented by Michael Griebel, Bram Metsch and Alex Schweitzer of
the University of Bonn.
- Added several new solver types to AMS and improved the AMS/FEI integration.
- Better handling of the relative change test in GMRES.
- Improved weights for Struct and SStruct weighted Jacobi.
- Added a 'make check' target that does a simple code verification test.
- Added truncation for interpolation according to the number of elements to the
ParCSR Hybrid AMG Solver.
- Renovated the hypre fei implementation for use in ARES.
#====================================
Version 2.0.0 released, 2006/12/15.
- Minor documentation updates.
#====================================
Version 1.14.0b released, 2006/11/30.
- Added python support to Babel interface.
- Changed the name of several internal header files to use the '_hypre_' prefix.
This should not affect most users, since these are internal headers.
- Added AME, a new Maxwell eigensolver based on AMS and LOBPCG.
- Changes to Struct code to hopefully improve efficiency of MG solver setup.
- Efficiency improvements for new long-range interpolation algorithms in
BoomerAMG, including:
* extended interpolation is now like modified, i.e no absolute values
* added an extended interpolation which only extends when there are no
common coarse neighbors
* changed standard interpolation to only extend at strong F neighbors
(instead of all neighbors) for better efficiency
#====================================
Version 1.13.0b released, 2006/10/03.
- Babel-based interface updated to Babel version 1.0.0, plus various
improvements, such as an interface to the hypre error handler. Pre-built
interfaces are included for C, Fortran, and C++.
- Various modifications to BoomerAMG:
* Eliminated the possibility to set relaxation on the finest grid
* Added various new long-range interpolation algorithms: standard (with and
without weight separation), extended, and F-F interpolation. These routines
will improve convergence for the low complexity coarsening algorithms PMIS
and HMIS.
* Added the possibility to set a maximal number of weights per row <n> when
truncating the interpolation operator. When this option is used, only the
absolutely largest <n> weights per row are kept.
- Modifications to the fac user interface to permit easier problem set up.
- Shared libraries can be built by using the --enable-shared option when
configuring. NOTE: the directory where the shared libraries reside MUST be
defined in the LD_LIBRARY_PATH variable.
- Incorporated the GNU Lesser General Public License.
- Now using Roundup for issue tracking; send email to hypre-support@llnl.gov
#====================================
Version 1.12.0a released, 2006/07/26.
- First release of AMS, a new solver for (semi)definite Maxwell problems.
- First release of Maxwell, a semi-structured Maxwell solver.
- Modifications to the fac user interface to permit easier set up of the problem.
#====================================
Version 1.11.1b released, 2006/05/30.
- Corrected FEI build to allow user to specify a system FEI and build internal
HYPRE routines.
#====================================
Version 1.11.0b released, 2006/04/24.
- Added configure option --without-FEI to disable build of internal FEI
routines.
- Added a new system for handling error codes in hypre.
- Added configure option --print-errors to enable printing of HYPRE error
messages.
- Modified configure to only depend on having a C compiler available.
- Added compatible relaxation on one processor.
- Updated all F90_HYPRE_* files to be consistent with HYPRE_* files.
- Updated ex5.c to include:
* an option to print the system matrix and rhs
* a description of how to read in a matrix and rhs in IJ format.
- Corrected error that occured when more than one Euclid solver object is used
at the same time
- Added Maxwell capabilities via Sandia's ML solvers; see details in
FEI_mv/fei-hypre/CHANGELOG.
- Replaced PILUT with Euclid in test code sstruct.c.
#====================================
Version 1.10.0b released, 2005/12/19.
- configure updates
* always runs --without-blas --without-lapack unless otherwise specified
* cross-compiling enabled
* added --with-no-global-partition option
- makefile updates
* changed eigensolvers subdirectory to multivector
- Added a set of simple example codes covering the Struct, SStruct and IJ
interfaces. See README.html in the examples subdirectory for more details.
- The --with-no-global-partition option was added to reduce storage and improve
run times on very large numbers of processors (such as BlueGene/L). Currently
only the IJ interface solvers have been optimized. For small or modest
numbers of processors (typically < 1000-5000 depending on the machine), this
option is not needed (and will likely be slower).
- Added aggressive coarsening, which can be applied to all available coarsening
schemes (via HYPRE_BoomerAMGSetNumAggLevels and HYPRE_BoomerAMGSetNumPaths)
- Added multipass interpolation and direct interpolation.
- Added the capability of nodal coarsening for systems AMG.
- expanded coverage of Babel-based interface
#====================================
Version 1.9.0b released, 2005/02/10.
- Added updated LOBPCG source code and test files.
- Added a vector Laplace problem for testing systems AMG.
- Added FAC to semi-struct
#====================================
Version 1.9.0a released, 2005/01/18.
- NOTE: Link lines may need to be changed depending on configure options used.
- The build system introduced in v1.8.3a was too difficult to maintain, so we
have reverted to a system similar to the previous one. In particular, all of
the new automake and libtool stuff was removed. In the new system, each
directory (except 'config') has ONLY a 'Makefile' (no more 'Makefile.in' or
'Makefile.am' files). When the 'configure' script is run, the single file
'config/Makefile.config' is created. This file is included in all Makefiles
in all sub-directories. Shared libraries CANNOT be created with this system.
- The makefile targets are now more inline with GNU standards. To get details,
type 'make help'.
- The makefile target 'nofei' has been removed and is now run by default.
- The library files 'libHYPRE_blas.a' and 'libHYPRE_lapack.a' are no longer
created when 'configure' is run '--without-blas' and/or '--without-lapack'.
This created confusion before and really didn't make sense anyway. These
options are now consistent with the '--without-MPI' option. Also, there is
no longer any danger of name conflicts with external blas or lapack libraries
as was the case before.
- Added new parallel coarsening schemes PMIS and HMIS with reduced complexities
as well as the option of using one pass of Ruge-Stueben only.
- Added the capability to set values from any processor through the IJ matrix
and vector interfaces.
- Added support to the PFMG solver for matrices with constant coefficients.
- Reverted back to the first approach for setting periodic conditions. The
periodic flag now contains the periodicity value, and is not just a boolean.
#====================================
Version 1.8.3a released, 2004/01/21.
- The build system has been revamped to enable the building of shared
libraries (in addition to static libraries, as before). The new
system more closely follows GNU standards, and will hopefully show
improved flexibility and platform support. Users can build hypre
as before by typing 'configure' followed by 'make'. A few makefile
target changes to note are:
* 'make clean' replaces 'make veryclean'
* 'make all' no longer builds the drivers in the 'test' directory.
If needed, build them from within the 'test' directory or
use the 'make test' target.
Technical notes: We are now using GNU automake-1.8.2 to support
Makefile.in generation; autoconf-2.59 to generate configure; and
libtool-1.5 to provide shared library support. The GNU tools,
autoheader, libtoolize, and aclocal are also used. These tools are
only used by hypre developers and are *not* needed to build hypre.
- Separated the lapack and blas routines into two libraries. Blas and
lapack support (whether to use the routines distributed with hypre or
use already installed libraries) is determined by configure, and can
be overridden with '--with-blas=<lib>' and '--with-lapack=<lib>'.
NOTE: This change affects your link line!
- A new directory 'lib' contains a new Hypre library, 'libHYPRE.a' (and
'libHYPRE.so' if configured for shared libraries) which contain
all of the libHYPRE_*.a objects with in a single library.
- Fixed the PFMG and SMG solvers to work in the case of pure Neumann
boundary conditions.
#====================================
Version 1.8.2b released, 2003/10/22.
- Performance improvements for Struct solvers when there are many
boxes per processor in the grid. For 125 boxes or more in 3D,
the speedup in the setup phases of PFMG and SMG can be significant
(we have seen as much as a factor of 30).
- New non-Galerkin option in PFMG can improve convergence and memory
usage. This option maintains either a 5-pt stencil in 2D or a 7-pt
stencil in 3D on all grid levels.
- New non-symmetric red/black smoother in PFMG can improve
convergence on some problems.
- New optimizations in the smoothers in PFMG lead to as much as 30%
faster times.
- Added a new interpolation option to AMG that is useful for solving
hyperbolic equations. It treats fine weak connections like fine
strong connections.
#====================================
Version 1.8.1b released, 2003/05/21.
- Minor bug fixes and performance improvements.
#====================================
Version 1.8.0b released, 2003/04/08.
- New Babelized HYPRE interface introduced. Babel is a tool that
provides language interoperability. HYPRE will eventually migrate
to using Babel exclusively. See 'docs/babel_transition_info.txt' for
information on how to use the new interface.
- PFMG: bug fix for red/black relaxation.
- Eigenvalue solver LOBPCG has been added. See 'docs/lobpcg_info.txt'
for documentation.
#====================================
Version 1.7.11a released, 2003/03/14.
- BiCGSTAB has been added to struct and sstruct interface
- added automatic determination of relaxation parameters for use with symmetric
smoothers in BoomerAMG
#====================================
Version 1.7.10b released, 2002/12/02.
- New Hybrid solvers available for ParCSR and Struct.
- IJ: Modified the 'GetValues' part of the matrix interface to make
it possible to get matrix values without knowing the nonzero
structure. In particular, added a new option to IJMatrixGetValues,
and added new routines IJMatrixGetRowCounts, IJMatrixGetLocalRange,
and IJVectorGetLocalRange.
- SStruct: Fixed a bug when connecting a part to itself with SetNeighborBox.
- FEI: Added a few more smoothers and amg methods in mli, fixed a few memory
leaks uncovered by running ale3d, added new aggregation coarsening for
handling multiple materials. For more details, see
FEI_mv/fei-hypre/CHANGELOG.
#====================================
Version 1.7.9b released, 2002/10/18.
- SStruct: Added an if around sorting and eliminating duplicate
iUventries so that its only executed when there are at least 2
such entries.
#====================================
Version 1.7.8b released, 2002/09/25.
- SStruct: Changed the MatrixSetSymmetric interface (this was actually
not implemented before anyway). The new interface allows much more
flexibility in controlling which parts of the matrix are symmetric.
#====================================
Version 1.7.7b released, 2002/08/08.
- limited release SStruct optimizations testing
- the krylov library has been renamed to HYPRE_krylov
#====================================
Version 1.7.6b released, 2002/03/27.
- SStruct: Changed SetNeighborBox function to allow the case where the
NeighborBox does not even intersect the grid. This functionality
is convenient in some application situations.
- SStruct: Made additional changes to the SetNeighborBox function to
allow NeighborBox information to be redundantly declared by users.
This functionality is also convenient in some application situations.
- SStruct: Optimized the implementation of MatrixSetBoxValues.
#====================================
Version 1.7.5b released, 2002/01/16.
- SStruct: Modified SetNeighborBox boxes to reach off of the global grid.
- krylov solvers (PCG, GMRES, BiCGSTAB and CGNR ) are the first
solvers to use the new definitions for logging, which are
logging = 0: no printout, no storing of norms or rel. res. norms
logging = 1: no printout, norms (and relative residual norms for PCG)
are stored
logging > 1: norms (and relative residual norms for PCG) are stored
and printed out to standard output during each iteration
step.
#====================================
Version 1.7.0b released, 2001/11/12.
- Bug fixes: SStruct interface under threads was producing incorrect
results. That is now fixed.
#====================================
Version 1.6.0 released, 2001/07/27.
- The Euclid PILU preconditioning library has been added to the release.
See Section 7.7.5 of the user manual and Section 6.6.4 of the reference
manual for details.
#====================================
Version 1.5.0b released, 2001/07/18.
- New draft of the IJ interface: This new draft is not backward compatible
with the previous draft. See the file `docs/V1.5.0b.IJ_transition_info'
for details on transitioning to the new interface. See the User's Manual
and Reference Manual for usage information.
- Added SetRelChange option to GMRES solver.
#====================================
Version 1.4.0b released, 2001/01/10.
- Changed SStruct interface: The SStructGraphAddEntries routine now
only sets one graph entry at a time. See the reference manual for
details on the new prototype and usage.
- Both PCG and GMRES are available now when using the Struct or SStruct
matrix classes (only one or the other was previously available).
#====================================
- First working multiprocessor version of SStruct interface.
- Fixed a bug in PILUT that effected multiprocessor runs.
- Additional interface for Krylov solvers: most function calls are
available with more generic naming, e.g. HYPRE_PCGSetPrecond
may be called instead of HYPRE_ParCSRPCGSetPrecond or
HYPRE_StructPCGSetPrecond.
#====================================
Version 1.3.1b released, 2000/10/12.
#====================================
Version 1.3.0b released, 2000/10/11.
- The number of threads to use in an OpenMP run can now be specified via
either the OMP_NUM_THREADS environment variable, or by the routine
omp_set_num_threads().
- Added fortran interface support for compilers that mangle names with
all capitals (e.g., Cray fortran compilers). To use, specify the
'--with-CFLAGS=-DHYPRE_CRAY' option on the 'configure' line.
#====================================
Version 1.2.0 released, 2000/09/22.
#====================================
Version 1.1.0 released, 2000/09/07.
- Setup time for PILUT has been dramatically reduced in the case of
very small drop tolerances, and memory problems that were causing
coredumps on >2 processors have been fixed.
- Changed Struct interface include file names to be consistent with
the rest of the library. They are now:
HYPRE_struct_mv.h
HYPRE_struct_ls.h
The Struct library names have also changed similarly.
- Removed the `stencil' argument from `HYPRE_StructVectorCreate'.
- Added a new interface for semi-structured grids. This is still very
much a beta implementation, and should be used with extreme caution
until further notice.
- The main header files have been restructured to be more readable.
They will soon include full documentation for their interfaces.
#====================================
New internal installation: V1.0.0, 2000/07/06
- Now installing both optimized and debugging versions of the library.
The optimized library is in the usual place; the debugging library
is in the subdirectory 'debug'.
- Added support for the FEI v1.4, with additional capabilities for handling
parallel slide surface reduction and general Schur complement reduction.
- Using a new version numbering scheme. The C macro HYPRE_Version()
may be used to retrieve version information.
#====================================
New internal installation: V2000-05-31
- OpenMP threading added to BoomerAMG.
to convert code to use the new names.
- Changed default coarsening type for BoomerAMG. This version does
Ruge/Stueben coarsening on the interior of each processor to generate
an initial independent set for the CLJP coarsening algorithm.
- Various BoomerAMG optimizations.
#====================================
New internal installation: V2000-03-30
- New AddToValues and AddToBoxValues routines for Struct interface.
- Fairly extensive changes to SMG/PFMG codes to fix setup phase
scalability problems. These changes should result in slightly
slower setup phase times for small-scale problems, but much
improved setup phase times for very large-scale (greater than
1000 processors) problems.
- AMG and GMRES solvers have minor fixes for reproducibility under
restart.
- A subtle coarse grid operator bug in AMG was removed. AMG no longer
frees from an uninitialized pointer to an empty domain coarse grid
operator.
- Minimum iteration count controls have been installed for AMG, GMRES,
and CGNR.
- Fortran interface wrappers have been made for ParCSRMatrixMatvec and
ParCSRMatrixMatvecT calls
#====================================
New internal installation: V2000-01-14
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