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2019-01-03 Version 5.46

Compilation:

* C++11 required

Model Interface

* LinkProduct* removal and addition of
fillModelLinks with its documentation

Engine

* Operator has fermionOrBoson member
instead of fermionSign

TestSuite:

* ci accepts -e regex

* sanityRig started

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2018-12-19 Version 5.44

Developer's interface:

* Changes to Model interface; see the manual for details

User visible:

* Hubbard and related models: sz has correct 0.5 factor now

New features:

* ChebyshevTargeting added but not yet ready (Alberto)

Documentation:

* Operator Expressions now documented in manual
(only canonical ones supported for now)

Build system:

* boost-devel is now a dependency. Only header
files are used; the boost runtime(s) aren't used

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2018-12-10 Version 5.42

Bug fixes:

* WARNs about unsupported movements

Features

* Echoes input file in base64 and cmd line

* ModelHeisenberg: anisotropyE added

* Model instrospection via operator executable

Docs

* documentation updated

Scripts

* getInSitu.pl script added

* OmegaUtils: prints also pgfplots

Build System

* configure.pl: can use default config via env

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2018-10-25 Version 5.40

Bug fixes:

* minimizeDisk is incompatible with RecoverySave
(reported by Wael)

Performance:

* CorrectionVectorSkeleton: better calR (contributed by Ed)

* coutAnalysis improvements

* timing matrixVectorKron

New defaults:

* KrylovNoAbridge SolverOptions added (KrylovAbridge now the default)

New features:

* shinkStacksOnDisk SolverOptions feature to reduce RAM usage
(requested by Nivav)

* deltaEnergies script added to help convergence studies

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2018-09-27 Version 5.38

Bug fixes:

* Recovery: bug fixed. Recovery granularity is N-2

* ModelHubbardMultiBand needed sorting of one-site basis

Performance:

* ArrayOfMatStruct performance work by Ed

* NotReallySort with unordered_map

* NotReallySort with on-the-fly for tensor product of Qns

* Using Array instead of std::vector in some cases to
avoid fill overhead

* Basis::setToProduct performance work

New features:

* Git revision printed if available

* coutAnalysis corrected improved

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2018-09-11 Version 5.36

Bug fixes:

* TargetingMetts bug fix

Performance

* Qn::operator== improved

* KronUseLowerPart now default except for BatchedGemm
this should decrease RAM usage

Refactor:

* WFT uses directly the stacks

* NotReallySort: work started to parallelize it

New features:

* Now checks restart consistency for useComplex

* ProgressInUseconds SolverOptions

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2018-08-30 Version 5.34

Bug fixes:

* bug fix for 1801

* bug fix for HubbardHolsteinSSH

* bug fix for METTS

* discovered bug in restart for signs which
was fixed in PsimagLite 2.34

Refactor:

* WFT: in preparation for SVD use

* Truncation: in preparation for SVD use in WFT

New features

* Option -S for both dmrg and observe

TestSuite:

* postCi compares RAM usage

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2018-08-21 Version 5.32

Bug fixes:

* HubbardHolsteinSSH bug fix

* Kondo bug fix

* AdjustQuantumNumbers bug fix

Refactor:

* Geometry AdditionalData simplified

* Hamiltonian Connections restricted to i < j

New features:

* observe can measure multiple data sets

* Engine supports fermion models not conserving
Ne

TestSuite:

* postCi: default gold directory

* ci 113: like 2 but measures 2 data sets

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2018-08-09 Version 5.30

Bug fixes:

* FeAsJzSymmetry: matrix resize fixed

* FeAs model adjustQns fixed (Nitin)

* Truncation: cout printing fixed (Nirav)

* Qn.h saves modal at least once

New features:

* option KronUseLowerPart added (Ed)

* Model=KitaevExtended added (Alberto)

* option saveDensityMatrixEigenvalues added (Nirav)

New defaults:

* option useSvd deleted, option truncationNoSvd added

Build system:

* ConfigBase.psiTag: can override default compiler

* Compiles on a MAC

TestSuite:

* ci: fixed 5800 and 5810 data file

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2018-07-31 Version 5.28

* modulo symmetry or k-symmetry
now supported in Engine

* TargetExtra now a vector

* HubbardModelMultiBand uses modulo symmetry and
simulates a ladder as a chain with orbitals

* Kondo Model added

* configure.pl uses PsiTag

* DmrgSerializer saves transform as a BlockDiagonalMatrix

* DmrgSolver saves electrons of one site

* observe: fixed fermionic operators when growing environ

* observe: performance improved

* Term labels can be added to input file.
They must be in order with Term0= as the first one,
Term1= as the second one, etc.

* ci: 112 added like 2 but observe when growing environ

* ci: 1600-1601 trivial tests for Kondo

* postCi: CollectBrakets improved

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2018-07-24 Version 5.26

* ci/postci: -su2 instead of -nosu2

* ci: for Holstein and HolsteinSSH

* Changes due to changes to PsimagLite indexOrMinusOne
and Matrix interface

* build system: improvements due to PsiTag improvements

* ModelHelper now inside HamiltonianConnection

* RIXS changes by Alberto

* HubbardHolstein model added by Alberto

* LinkProductStruct now called CachedHamiltoniansLinks

* Qn improvements, no more full sort, only equal/unequal
operator between Qn objects

* Model Interface changed, basis of one-site no longer exposed
basis of one site no longer needs ordering
But backward compatibility order preserved for most models

* LinkProduct* interface changed with virtual base LinkProductBase

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2018-07-12 Version 5.24

* ci: 6005 for Kitaev

* postCi: CollectBrakets implemented

* new build system

* KompileRig updated

* fixLegacyBugs SolverOptions added

* MODEL written to data file by IoNg

* Chemicals: work started

* LinkProductBase virtual base

* refactoring HamiltonianConnection
and added ParallelHamiltonianConnection


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2018-06-28 Version 5.22

* VectorWithOffsets reads only non-zero sectors

* IoSimple no longer used in DMRG++

* operator driver now prints JMVALUES 2 jtilde mtilde

* ci: 5802 added (JzSymmetry)

* ci: bug fixes

* kompile rig to compile with various setups

* DiskStack now has better implementation

* recovery feature implemented but needs tests and docs

* coutAnalysis counts number of times each item appears


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2018-06-19 Version 5.20

* ci: ./dmrg -f input.inp 'n$.txt' feature

* ci: collect brakets implemented

* ci: postCi fixes

* Hybrid space-momentum model added;
but not k-symmetry yet

* Basis: qns indexed by partition not state

* Basis: electronsOld only by sign now

* Qn or QnType traps all quantum number logic

* Model interface changed to accomodate
new quantum number logic

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2018-05-21 Version 5.18

* IoNg works except for Recovery

* ci: RIXS tests added

* ci: infrastructure changed

* USE_IO_NG enabled by default

* Kitaev: Magnetic field in x,y,z

* mtune and march compiler switches

* hdf5 -L flag for Ubuntu

* addHamiltonianConnection acceleration
in ModelCommon

* Starting to use PsimagLite::Profiling

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2018-05-08 Version 5.16

* IoNg works with observe

* JMVALUES and AngularFactor
no longer read unless using SU(2)

* changes due to PsimagLite's Parallelizer 
API changes

* DenseSparseThreshold= line used
also inside KronUtil

* coutAnalysis with cutoff=0 by default

* VerySparseMatrix updated

* ModelCommon prints time for
addHamiltonianConnection

* IoNg can write NGSTs

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2018-04-24 Version 5.14

* IoNg: OutFile= will be rootname only

* IoNg: can restart GS with WFT

* Correction Vector with useComplex
now possible

* advanceOnlyAtBorder is now the default
say advanceUnrestricted not to
restrict advance at borders

* ci: entangles with MatrixVectorOnTheFly

* ci: JMVALUES updated format

* Kitaev Model: corrected connection to 0.5

* no more print() for targets

* tar support and related options deleted

* compiles with clang++

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2018-04-16 Version 5.12

* SolverOptions diskstacks and wftStacksInDisk deleted

* Targetting is now Targeting

* manual updated

* IoNg: work in progress

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2018-04-06 Version 5.10

* Kitaev model implemented

* Kitaev.tex and input6000.inp

* IoNg serialization work in progress

* compilation with float

* MatrixVectorKron is the default now

* Compiler options printed to cout

* When Lanczos fails prints why

* -Werror no longer a default
  But please keep reporting compilation warnings

* bug fix for complex hoppings
  This only affected useComplex for geometry
  terms with dofs=2 (spin up and spin down with 1 orbital)

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2018-03-22 Version 5.08

* i/o API changes

* nFromAkw.pl improvements

* VerySparseMatrix improvements

* Anisotropy in Hubbard model added (optional)

* Needed MaxMatrixRankStored now printed on failure

* omega scripts for open boundary conditions

* tst fix: border sites were printed twice

* correction targeting: bug fix

* wftInPatches is switched to wftInBlocks
  when twositedmrg is used

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2018-02-27 Version 5.06

* On February 1st, 2018 a massive
  overuse of RAM was introduced.
  This has been fixed now.

* Basis.h : small memory improvements

* Changes due to CRS improvements

* added coutAnalysis.pl script to analyze output
  to .cout produced by DMRG++

* SU(2) no longer built by default, making
  compilation faster

* DMRG++ now warns if TruncationTolerance
  is used without twositedmrg

* Various improvements to Observables by Nirav

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2018-02-20 Version 5.04

* jzSymmetry checks

* SU(2) factors allocated only when using SU(2)

* IoNg work started

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2018-02-08 Version 5.02

* ci: added inputs for papers 58, 62, 66 and 68

* wftInBlocks now works for all targets

* wftInPatches acceleration now works
  for onesitedmrg

* BatchedGemm now needs pluginSc

* faster changeOfBasis but older changeOfBasis
  still used when JzSymmetry=1

* KrylovAbridge option added, Abridgement printed

* BatchedGemmPluginSc uses dense or sparse 

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2018-01-25 Version 5.00 

* BatchedGemm is ready

* observe 4-point at borders corrected

* nFromAkw script added

* Renyi entropy added

* correction vector: spurious tridiag deleted

* Lanczos reortho

* use lib "." in scripts

* VectorWithffset(s) load/save fixes

* WFT check due to symmetry sector leaks

* 2 regression fixes

* wftInPatches now disallowed
 
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2018-01-03 Version 4.70

* InitKronBase: threshold bug fix

* BatchedGemm: PLUGIN_SC implementation
  almost done

* BatchedGemm: mainstream implementation
  needs more work

* Scripts for dynamics added and updated

* Border 4-point marked buggy in some cases
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2017-12-20 Version 4.68

* BatchedGemm option added
  Needs PluginSc, work in progress

* wftInBlocks only for ground state

* WFT for twositedmrg is now parallel

* RIXS patches

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2017-12-12 Version 4.66

* Wft files in Engine/Wft directory

* wftInBlocks: only with twositedmrg, and
               still doesn't work with NGSTs

* baseStack files are now deleted on normal completion

* Interface to PLUGIN_SC: work in progress

* toolboxdmrg supports -o option

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2017-11-30 Version 4.64

* observe compilation fix

* TargetingCorrection, crash fixed

* ci: EnergyAncilla

* ci: test 1801 fixed

* VectorWithOffsets: bug fix for load/save

* WFT: Acceleration with temporary possible

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2017-11-27 Version 4.62

- Bug fixes

* bug fix in minimize read/write

- Features

* initKronBase/Hamiltonian/Wft

* observe supports -o

* RIXS static and dynamic

* WftOptions struct

* WFT in patches: tons of work; still not done

- Clean up

* TargetingCorrectionVector uses 
  CorrectionVectorSkeleton

* AFTER/BEFORE_TRANSFORM minimized usage

- TestSuite 

* ci: test 467 fixed

* ci supports -o

* ci.pl: Now copies executables correctly

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2017-11-09 Version 4.60

* IMPORTANT: Compilation fix for new gcc

* Ainur related change

* postCi fix

* RIXS Statics and Dynamics improvements
  RIXS is still a feature in development

* VectorWithOffset(s) stores qn

* TSPUseQns no longer needed, easier to
  guess symmetry sector for WFT

* DONT_MIX deleted

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2017-09-20 Version 4.58

* rixs static bug fixes

* diskstacks option to store
  stacks to disk and use less RAM

* Ainur related changes and added samples

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2017-09-05 Version 4.56

* bug fix: braket names for NGSTs

* tests 4600 and 4601 added

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2017-08-28 Version 4.54

679
* Targeting common: printing fixed
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* dmrg driver accepts -o solver_options

* operator driver accepts -e canonical_expression

* observe: 2-points fixed for complex numbers

* WFT transform in block diagonal form

* correlationsSymmetry.pl added to check
  symmetry of correlation matrix

* continuous integration (ci) improvements

* fixed assert in encodeQuantumNumber

* rows() and cols() for most matrix types

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2017-08-07 Version 4.52

* Kron optimizations

* useSvd should work now

* operator driver bug fixed

* TestSuite: improvements to ci and postCi

* TestSuite: new tests for papers

* KMH model regression is marked but not fixed

* toolboxdmrg action analysis

* BlockDiagonalMatrix improvements

* $ character in operator specs

* HeisenbergAnisotropic implemented

* TargetingInSitu added

* Feature Proposal: Tracking Unnatural Operators

* manual: Braket specifications

* Operator Expressions: canonical expr. implemented

* Preparation for WFT in patches

* Ainur input system: very early usage

* enums become named

* Rixs is ready for tests


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2017-06-15 Version 4.50

* Standalone input label DenseSparseThreshold

* DensityMatrix: Returns BlockDiagonalMatrix

* KronUtil: more function in same compilation unit
  to improve inlining

* MatrixDenseOrSparse.h now in KronUtil

* linker time optimizations for gcc

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2017-06-08 Version 4.48

* DenseSparseThreshold label

* useSvd supports vectorwithoffsets

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2017-05-25 Version 4.46

* useSvd (but not yet for vectorWithOffsets or
  more than 1 target)

* useSvd pthreads

* Lanczos: saves LanczosVectors by the default
    
    Internally lotaMemory=true is the default
    prefix + NoSaveLanczosVectors=1
    should be used to have Lanczos not save vectors

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2017-05-18 Version 4.44

* bug fix in printing

* changes in preparation for useSvd option

* Kron: KronNoLoadBalance SolverOptions added

* PTHREAD_ASSIGN_AFFINITIES removed, now a runtime option

* KronUtil: supports useComplex

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2017-05-11 Version 4.42

* extendedPrint SolverOptions added

* SolverOptions useSvd added, but not working yet

* SuperExtendedHubbard1Orb: includes spin orbit

* configure.pl does not generate sources
  by default anymore. All DmrgDriver*.cpp files
  are now commited

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2017-05-04 Version 4.40

795
* Kron:
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	- bug fix for fermion sign
	- changes to KronUtil
	- KronUtil Makefile created by configure.pl
	- does not support SU(2)
	- weights for load balancing

* MatrixDenseOrSparse: 50% cutoff

* PsiApp used by dmrg and observe drivers

* observe: compilation in parallel

* option printmatrix

* ci: -nosu2 option added


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2017-04-24 Version 4.38
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816
* observe:
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	- bug fix when <bra|operators|ket>
	- 5 or more points supported with
	  fixed sites

* postCi: detects energy changes, no files

* ci: -S option allows to run on command line
      or batch

* Makefile: -lblas -llapack

* announce when ifdef OPERATORS_CHANGE_ALL

* Kron and KronUtil:
	- additional checks
	- bug fix in offsets
	- bug fix for in and out vectors
	- bug fix in estimate_kron_cost