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Changelog. A lot less detailed than usual, at least for past
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history.
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2022/05/20: Restart ChangeLog. Updated to new name AMG4PSBLAS, now using PSB3.8
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2018/10/28: Fix interface to MUMPS and configry machinery. Require PSB 3.6.
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2018/10/10: ICTXT argument in prec%init().
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2018/07/30: Fixes for Intel compilers. BootCMatch interface in examples.
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2018/05/14: Interface for extension of aggregation methods.
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2018/02/28: New cartesian distribution for sample programs.
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2017/12/15: New WRK component of preconditioner levels, preallocation.
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2017/10/25: New example input file formats. Added sample matrices.
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2017/10/02: New CBIND in PSBLAS 3.5.0
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2017/07/30: Refactored examples. Change default thresholds.
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2017/05/31: New internal description of ML.
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2017/05/16: Improve build process.
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2017/04/20: Force %set interface. Update docs.
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2017/04/03: Remove obsolete stuff.
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2017/03/17: Fixed level%cnv; add coarse _solver tracker.
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2017/02/18: Take out clean_zeros; changed NOFILTER; defined FBGS; take out
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n_prec_levs.
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2017/02/12: Updated mat_dist usage, dubious SP shell for UMFPACK, fixes
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for RPM packaging.
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2017/02/02: Fix superlu configury
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2016/11/12: Fix hierarchy/smoothers build to handle 1 level.
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2016/10/03: Merged changes to hierearchy building.
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2016/08/20: Reimplemented decoupled aggregation
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2016/07/20: Refactored application of multilevel. Defined V,W and
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K-cycles.
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2016/05/18: Reworked internals of PRECSET. Defined Forward-Backward
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Gauss-Seidel solver. Now available separate PRE and POST smoother
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objects.
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2016/03/30: MUMPS interface.
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2016/02/28: Hybrid Gauss-Seidel method.
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2016/02/03: unify integer argument checks.
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2015/12/15: defaults single vs. double precision. Use clean_zeros.
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2015/12/08: new matdist interface
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2015/10/17: configry fixes
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2015/10/13: Fixes for SLUDIST versions 3 and 4
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2015/05/03: New heap interface
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2015/04/21: INTENT fixes
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2014/12/21: New error handling
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2014/10/27: Added versioncheck to configure.
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2014/03/31: New get_diag.
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2013/11/07: Merged changes from experimental branch. Fix INCDIR in
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makefiles.
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2013/07/15: Fixes for UMFPACK 5.4, SuperLU 4.3, SuperLU_Dist 3.3
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2013/04/05: CLONE method.
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2013/03/08: Reworked SET routines.
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2012/12/10: Enable long_integers.
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2012/12/05: Split smoother/solver objects.
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2012/04/30: New scheme to find dynamically the number of level based on
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the size of the coarse matrix
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2012/01/10: Done split interface/implementation, plus subdir restructure.
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2011/12/13: Start split interface/implementation to improve build time.
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2011/11/25: Now works with _vect methods from PSBLAS.
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2011/10/24: New test generation methods.
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2011/06/15: Dump prolongator/restrictor
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2011/04/14: Added MOLD argument(s) to precbld.
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2011/03/30: Fixed: descriptive methods, example programs.
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2011/03/08: Re-factored modules for ILU methods.
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2011/03/04: Make X intent(inout) in APPLY to allow for preconditioners
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using SPMM.
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2011/03/02: New set methods.
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2011/01/07: Fixed UMF interfacing for Z data.
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2011/01/04: Added UMF inteface for D data.
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2011/01/02: Fix usage of DESC_DATA. Switched all names to F90 ending.
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2010/12/16: Fix usage of replicated space descriptor.
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2010/11/16: Fix Jacobi smoother in case of empty off-diagonal.
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2010/11/04: Defined and tested single real and complex.
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2010/11/02: Aligned usage of sparse data type with psblas3.
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2009/12/22: Aligned constants with mld2p4 v1.2
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2009/12/11: First working version of double multilevel.
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2009/12/05: Inttroduction of Smoother/Solver object hierarchy.
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2009/09/23: Initial F2003 version.
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2009/01/28: Changed names from XbaseprcY to XbaseprecY.
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2009/01/27: Changed names from mld_transfer to mld_move_alloc.
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2009/01/13: Repackaged the one-level preconditioners. Reorganized the
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build routines, taking out mlprec_bld, and switching the
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number of levels when needed.
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2008/10/27: Changed the definition of prec_type: repackaged with a
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onelev-prec-type, containing a baseprec and maps between
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index spaces. No performance impact; no changes to
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user-level interfaces.
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2008/09/18: Changed mld_sizeof to integer(8); updated samples.
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2008/08/26: Fixed matrix generation in sample programs.
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2008/07/25: missing implicit none in mld_prec_type.
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2008/07/23: added HTML documentation
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2008/06/13: Fixed aggregation for replicated index spaces.
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2008/06/02: Threshold into decoupled aggregation algorithm.
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2008/05/27: Single precision version.
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2008/03/09: Introduced configure script.
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2008/02/08: Merged changes from intermesh branch: we now have an
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inter_desc_type object. Cleaned up data allocation and
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variable initialization in multilevel prec application.
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2008/01/10: Merged various fixes for: prologues, unused variables,
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interface details.
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2007/12/21: Merge version with prologues and internal docs.
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2007/11/15: Created pargen example.
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2007/11/14: Fix INTENT(IN) on X vector in preconditioner routines.
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2007/10/19: Merged in ILU(P,T). To be tested extensively.
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2007/10/17: Merged ILU(K) into trunk.
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2007/10/16: Fixed ILU(K), it now performs satisfactorily. Also updated
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ILU(0) to be more legible.
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2007/10/11: First working version of ILU(K). Still slow, there should
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be room for improvement.
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2007/10/09: Added benchmark code.
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2007/10/09: Added MILU_N_. Beware: values for UMF_ etc. have been
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shifted.
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2007/10/02: To do: decide whether to name MLD_KRYLOV_MOD or
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PSB_KRYLOV_MOD.
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2007/10/01: Start of this changelog. MLD2P4 now has a different
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structure, to enable a build not embedded in PSBLAS.
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