• Added "options" input argument for the driver routines. This structure contains all the parameter settings.
  You can call the routine

  set_default_options()

  to set the default values.
• Added "stat" output argument for the driver routines. This structure contains all the statistics collected at run-time.
• The driver routines xGSSV/xGSSVX have new interfaces reflecting the above changes.
  See an example EXAMPLE/dlinsol.c
• Added more examples in EXAMPLE/ directory. See README in that directory.
• Added a "symmetric mode" which gives better performance when the matrix is or diagonally heavy, or symmetric and/or positive definite, or nearly so. In this mode, the algorithm attempts to select pivots on the diagonal.
  See an example in EXAMPLE/dlinsol1.c
• Better Fortran interface. See FORTRAN/ directory, and README in that directory.
  
  
• 06/14/05 :   fixed a bug in the complex drivers sgssvx/zgssvx when the input matrix is stored in compressed row format.
  
  
• 08/01/05 :
  • Prefixed the header files by "slu_".
  • Fixed a memory leak in get_perm_c() when bnz=0.
  • Changed "abs" to "fabs" in izmax1.
  • Upgraded COLAMD to the latest version (2.3).
  
  
• 01/02/06 :
  • Changed the argument of SUPERLU_MALLOC from "int" to "size_t".
    Otherwise the computation of the argument to SUPERLU_MALLOC may cause 32-bit integer overflow.
  • In TESTING/[cdsz]drive.c, moved the forward declaration of the prototype to the top of the file before main().
  • Used standard name for library archive: libsuperlu_3.0.a.

2. SuperLU 3.1 (released August 1, 2008)

• Remove recursive DFS for postordering elimination tree in sp_coletree.c
  (The nonrecursive routine nr_etdfs() was contributed by Cedric Doucet, CEDRAT Group, Meylan, France.)
• Make supermatrix.h the same for all three libraries
• Include an on-line HTML documentation for the source code
• Bug fixes:
  • corrected backward error BERR formula when a component of the RHS and the residual are exactly zero
  • change parameter "delta" to genmmd() from 1 to 0 in get_perm_c
  • remove "static" declaration in EXAMPLE/xlinsolx*.c

3. SuperLU 4.0 (released June 30, 2009)

• Include threshold-based incomplete factorization (ILU)
  
• Removed the static global variables so that it is thread-safe.

4. SuperLU 4.1 (released November 25, 2010)

• Make superlu_options_t{} structure and enum constants the same for both superlu & superlu_dist.
• Replace qsort by "quick select" (qselect) in ILU's secondary dropping.
• Replace mc64ad.f by mc64ad.c using f2c.
• Bug fixes, including:
  • ilu_sdrop_row.c.
  • xgsisx.c, so that when mc64 permutation is used in ILU, the right-hand side is permuted properly.
• Add parameter #7 in sp_ienv(), setting as the maxsuper for ILU code (smaller than parameter #3).
• Update Users Guide.
• Update doxygen code documentation.

5. SuperLU 4.2 (released August 25, 2011)

• Fix a bug in ILU driver routine dgsisx.c, so that on return, the initial row permutation is combined with perm_r[] from partial pivoting.
• Modify 2 ILU examples: EXAMPLE/ditersol.c, EXAMPLE/ditersol1.c
• Update superlu_timer.c

6. SuperLU 5.0 (released July 26, 2015)

• Modified for thread-safety
  • Remove 'static' variable 'Glu' in *gstrf.c, instead, pass it as an argument.
  • dlacon.c --> dlacon2.c, replace 'static' variables used for reverse communication by an array of size 3, passed as argument.
  • Replace dlamch.c by dmach.c (C99 standard, table lookup in float.h), no 'static' variables.

6. SuperLU 5.1 (released December 3, 2015)

• Rename many routines to avoid name conflicts with other libraries.
• Allow real and complex to be linked together.
• Fix a bug in iterative refinement routine xGSRFS(), related to complex trans=CONJ case.

7. SuperLU 5.2.0 (released April 8, 2016)

• First xSDK release, added copyright notice in each file.

8. SuperLU 5.2.1 (May 22, 2016)

• Update License.txt to include mc64 license
• MATLAB/, remove nonfree code spypart.m, time.m
• SRC/, use GNUInstallDirs module to Define GNU standard installation directories
• Add macro-defined version string in SRC/slu_util.h

9. SuperLU 5.2.2 (October 17, 2020)

• Provide pkg-config and superluConfig.cmake
• Remove m library on Windows
• Include user guide ug.pdf in tarball
• Minor fixes

10. SuperLU 5.3.0 (September 29, 2021)

• Add CI with GitHub Actions
• Remove warnings; fix a bug in xgsisx.c (mc64 & equil).
• CBLAS/ cleanup
• Update supermatrix.h and superlu_enum_const.h to the new ones in superlu_dist

11. SuperLU 6.0.0 (April 5, 2023)

• Add 64-bit indexing support, with mixed int and int64_t types.
  Use cmake definition to install: -DXSDK_INDEX_SIZE=64
• Add METIS ordering option: In code, set: options->ColPerm = METIS_ATA;

• 09/10/07 :
  • Included support for complex data types. (now has four types: single and double precision / real and complex.)
  • Included OpenMP, in addition to POSIX threads.
  • Removed an explicit recursion in a subroutine, which often causes stack overflow for large problems.
  • A number of bug fixes.
  
  
• 01/15/08 :
  • enable detailed profiling by compiling with -DPROFILE.
  • a number of bug fixes.
  
  
• 12/12/12 :
  • add comments in various MAKE_INC/make.inc -- NOOPTS needs to be defined as C compiler's no optimization level, to prevent optimization of some routines.
  • bug fix in EXAMPLE/pxlinsolx.c

• Fixed a race condition bug in the OpenMP version.
• Fixed a char string bug in TESTING/ drivers.

• Updates to work on Windows.

• Fixed bugs in "Symmetric Mode".
• Update to use latest COLAMD from SuiteSparse.

• Replace a static PTHREAD_MUTEX_INITIALIZER by call to pthread_mutex_init().
• Suppress unnessary printing.

• Support 64-bit integer for indices in sparse data structure.
• renamed p*sp_defs.h -> slumt_*defs.h
• fixed a bug in expert driver p*gssvx.c, for repeated factorization.
  Interface change for P*GSSVX():

       Must pre-allocate the following 3 arrays in the structure
       superlumt_options-> {
           - etree [ size n ]
           - colcnt_h [ size n ]
           - part_super_h [ size n ]
         }
       These 3 arrays are re-used (cannot be freed) between the calls to P*GSSVX() for repeated factorizations.
  
       See example EXAMPLE/p*linsolx.c 
      

• Add {c,z}matvec2() routines in {c,z}myblas2.c

• 03/15/03 :   Included the distributed input interface
  • The driver routine for the distributed interface is pdgssvx()
  • The driver routine for the global interface is pdgssvx_ABglobal()
  
  
• 02/23/05 :   Improved the time of the redistribution routines.
  
  
• 08/01/05 :
  • In pdgsrfs_ABXglobal.c / pzgsrfs_ABXglobal.c, put the "static" function prototypes at file scope.
  • Fixed a memory leak in get_perm_c() when bnz=0.
  • Fixed a memory leak in superlu_grid.c: added a call MPI_Group_free( &superlu_grp ).
  • Removed COLAMD ordering option.
  
  
• 01/02/06:
  • Added prototypes to the BLAS routines, in superlu_ddefs.h/superlu_zdefs.h.
  • CBLAS/ directory: made a symbolic link Cnames.h -> ../SRC/Cnames.h
  • Fixed memory leaks related to MPI, in supelu_grid.c
    
    • added MPI_Group_free(&mpi_base_group);
    • added MPI_Type_free( &SuperLU_MPI_DOUBLE_COMPLEX );
  • Added "slamch" in Cnames.h.
  • Use standard name for library archive: libsuperlu_dist_2.0.a.
  • Restricted the length of Fortran names (in FORTRAN/ directory) not exceeding 31 characters.

2. SuperLU_DIST 2.1 (released November 1, 2007)

• 11/01/07 :
  • Included parallel symbolic factorization, which depends on the ParMeTiS parallel ordering code.
    To use this, you need to set one field in the "options" structure as:
    • options.ParSymbFact = YES;
    
    
  • Corrected backward error BERR formula when a component of the RHS and the residual are exactly zero.
  • Made "supermatrix.h" identical for serial SuperLU, SuperLU_MT, and SuperLU_DIST.
  • Fixed a memory leak of the equilibration factors R/C, when Equil and SamePattern_SameRowPerm are set at the same time.

3. SuperLU_DIST 2.2 (released February 20, 2008)

• 02/20/08 :
  • Fixed a number of memory leaks and other bugs related to parallel symbolic factorization.
    
  • Updated files in SRC/ directory:
    • superlu_defs.h
    • psymbfact.c
    • get_perm_c_parmetis.c
    • pdgssvx.c, pzgssvx.c
    • pdsymbfact_distdata.c, pzsymbfact_distdata.c

4. SuperLU_DIST 2.3 (October 15, 2008)

• Improved panel factorization: 20-25% faster overall.
• Improved triangular solve: 60-80% faster.
• Updated the Cnames.h with BLAS name mangling [UPCASE].
• Included an on-line HTML documentation for the source code.
• Fixed a few bugs.
• No change of calling sequences.
• Fixed a few bugs related to 64-bit long long int. (04/04/10)

5. SuperLU_DIST 2.4 (June 9, 2010)

• Updated several headers which are used by a new hybrid solver.
• No change of calling sequences.

6. SuperLU_DIST 2.5 (November 25, 2010)

• Make superlu_options_t{} structure and enum constants the same for both superlu & superlu_dist.
• Update several header files which are needed by a new hybrid solver PDSLin: superlu_defs.h, superlu_ddefs.h.
• Replace mc64ad.f by mc64ad.c using f2c.
• Update Fortran90 interface to handle 64-bit integers properly.
• Update Users Guide.
• Update doxygen code documentation.

7. SuperLU_DIST 3.0 (October 18, 2011)

• Use better task scheduling strategy for LU factorization, which resulted in 2-3x faster than V2.5, especially when using large number of processors.
• Fixed a bug with METIS(A'+A), when the input A is diagonal matrix.
• Add a few options in options_t {...} structure.
• Rename enum constants SINGLE, DOUBLE, EXTRA to SLU_SINGLE, SLU_DOUBLE, SLU_EXTRA, to avoid name clash in Windows.
• Update Users Guide.
• Update doxygen code documentation.

8. SuperLU_DIST 3.1 (May 20, 2012)

• Update interface to (par)metis to be compatible with new 64-bit ParMetis 4.0.2.
• Fix a bug in the factorization routine of V3.0 when using 64-bit integer.

9. SuperLU_DIST 3.2 (Oct. 24, 2012)

• Fix a bug in look-ahead factorization.
• Allow three orderings: PARMETIS, NATURAL, MY_PERMC when the user chooses ParSymbFact = YES.
• Fortran90 wrapper for "double complex" datatype.

10. SuperLU_DIST 3.3 (March 31, 2013)

• Fix a bug related to MPI tag numbering in the look-ahead factorization. (The bug may cause deadlock or wrong answer.)
• Use own quick-sort routine (#define ISORT); work-around qsort() bug on Mac.

11. SuperLU_DIST 4.0 (October 1, 2014)

• Include support for OpenMP and GPU (CUDA).
• bug fixes.

12. SuperLU_DIST 4.1 (July 17, 2015)

• Piyush fixed some bugs in xSchCompUpt-2Ddynamic.c: - array access out of bound.
• printing of 64 bit integer.
• Patches from Satish Balay. (March 14, and May 22, 2015)

13. SuperLU_DIST 4.2 (September 25, 2015)

• replace xLAMCH by xMACH, using C99 standard.

14. SuperLU_DIST 4.3 (December 31, 2015)

• Fix a bug in parallel symbolic factorization, related to dense separator.
• Resolve name conflicts with serial SuperLU and LAPACK.
• Driver routines return proper INFO error flag, instead of exiting.

15. SuperLU_DIST 5.0.0 (April 8, 2016)

• Cleaned up many valgrind reported memory errors, especially for the buffers used by MPI.
• First xSDK release, added copyright notice in each file.

16. SuperLU_DIST 5.1.0 (May 15, 2016)

• Add p?GetDiagU() routines to extract the diagonal entries of the U factor. This can be useful for computing the determinant of matrix A.

17. SuperLU_DIST 5.1.1 (October 4, 2016)

• Fix a bug in calculating the size of U panel buffer.
• Some optimizations in L block search in dlook_ahead_update.c, and using parallel regions with omp for loop in dSchCompUdt-2Ddynamic.c

18. SuperLU_DIST 5.1.3 (December 31, 2016)

• Bug fix for repeated factorization using SamePattern or DOFACT.
• In FORTRAN/, modified superlu_options_t to use struct superlu_dist_options_t.
• Corrected detailed timings in Schur update: Gather, GEMM, Scatter.

19. SuperLU_DIST 5.2.0 (September 30, 2017)

• Performed a number of optimizations for the factorization routines, targeted at the Intel KNL manycore node. The optimizations include aggregated larger GEMM calls, vectorized scatter operations. For best performance, should like with a multithreaded BLAS library..
• Include a new SRC/superlu_dist_config.h, which contains the important CPP defs used when the library was build.
• Remove USUB and LSUB memory type defs in psymbfact.h, because they are already defined in superlu_enum_const.h.

20. SuperLU_DIST 5.2.2 (October 29, 2017)

• Add a query function superlu_dist_GetVersionNumber.
• Update top-level Makefile to compile library first, then install.
• Tested and fixed some issues with 64-bit index size.

21. SuperLU_DIST 5.3.0 (January 28, 2018)

• Add Windows support.
• Allow superlu_dist to build without (Par)Metis.
• Support building shared and static libraries simultaneously.
• Redefine MemType_t in superlu_enum_consts.h, so that USUB=0, LSUB=1. This is required in psymbfact.c.

22. SuperLU_DIST 5.4.0 (June 1, 2018)

• Incorporate a parallel approximate max-weight matching as numerical pre-pivoting.
  • options.LargeDiag_MC64 matches the old LargeDiag.
  • options.LargeDiag_AWPM is the new parallel code (Approximate Weight Bipartite Matching).
• Fixed bugs associated with static scheduling and look-ahead, which caused deadlock for certain process grid.

23. SuperLU_DIST 6.0.0 (September 18, 2018)

• Improved strong scaling for the triangular solve -- up to 4x faster than the Version 5.x on 4000+ cores.
• Add several utility routines in dutil_dist.c, per request from SUNDIALS.
• Change "long long int" to int64_t (C99 standard); include stdint.h.

24. SuperLU_DIST 6.1.0 (December 8, 2018)

• Improved OpenMP threading performance in triangular solve.
• Bug fix in factorization: bigV memory size is insufficient.
• Add declarations of "full", "gemm_timer", "scatter_timer" in xSchCompUdt-cuda.c
• Fixed couple of bugs in triangular solve:
  • In repeated factorization options, diagonal block need be re-inverted.
  • Added new trisolve features in pxdrive_ABglobal (modified xdistribute.c).
• In EXAMPLE/ drivers, change MPI_init() to MPI_init_thread().

25. SuperLU_DIST 6.1.1 (February 8, 2019) BugFix patch

• For SUNDIALS, remove "clone" in xCopy_CompRowLoc_matrix.
• In zscatter.c and sscatter.c when ACC=GPU is enabled, sp_ienv() is corrected to sp_ienv_dist().
• Unused arguments Urbs2 and send_req cause crashes on Windows.
• log_memory() in pxgstrs causes overflow for multiple solves.
• Merge pull request #39 from bavier/master: Replace deprecated MPI_Attr_get by MPI_Comm_get_attr.

26. SuperLU_DIST 6.2.0 (November 12, 2019)

• Use cmake's FortranCInterface module to automatically handle Fortran-C name mangling. Create a new file superlu_FCnames.h.
• Add initialization of current_buffer and peak_buffer in PStatInit().
• Add LAPACK name {d,z}trtri in superlu_FCnames.h.
• Update superlu_dist.pc.in
• Merge pull request #41 from tristan0x/bug/pkgconfig-libdir

27. SuperLU_DIST 6.3.0 (February 27, 2020)

• Redefine several structures as precision-dependent, so that both real and complex codes can be compiled at the same time.
  • localLU_t -> dlocalLU_t, zlocalLU_t
  • LUstruct_t -> dLUstruct_t, zLUstruct_t
  • SOLVEstruct_t -> dSOLVEstruct_t, zSOLVEstruct_t
  • ScalePermstruct_t -> dScalePermstruct_t, zScalePermstruct_t
• Clean up some valgrind errors.
  • PStatInit(): add stat->gpu_buffer = 0.0; (reported by Hong Zhang 2/18/20)
• A number of fixes for GPU code, Dec. 2019 - Jan. 2020
  • gemm_division_cpu_gpu()
  • dSchCompUdt-cuda.c
• Add a driver pddrive_spawn.c in order to use GPTune.
• Fix a problem in testing code related to SamePattern_SameRowPerm.

28. SuperLU_DIST 6.3.1 (April 2, 2020) BugFix patch

• update interface to CombBLAS, include both real and complex.
• update FORTRAN/ wrapper to include CMakeLists.txt file.

29. SuperLU_DIST 6.4.0 (October 23, 2020) MINOR update

• Improved OpenMP performance in pxgstrs.c, removed threadprivate variables.
• Add Fortran interface file for name mangling; XSDK_ENABLE_Fortran=FALSE.
• Add CUDA build in CMakeLists.txt.
• Use MPI_C_DOUBLE_COMPLEX type in MPI communication, instead of old way of using a derived datatype.

30. SuperLU_DIST 7.0.0 (May 12, 2021) Version-7

• Add communication-avoiding 3D sparse LU factorization algorithm

31. SuperLU_DIST 7.1.0 (October 5, 2021) Version 7.1.0

• Much improved user interface for the 3D algorithm framework:
  • Support uneven block row partition of user matrices {A,B}
  • Allow separate calls to Factorization and Solve routines
• For GPU code, allow OpenMP to be disabled
• Resolved some issues in the complex code using OpenMP, related to 'omp simd' pragma

32. SuperLU_DIST 7.2.0 (December 12, 2021) Version 7.2.0

• Remove cub/ dependency, update xsuperlu_gpu.cu files:
  • Move routines dnextpow2() and incScan() into precision-independent file superlu_gpu_utils.cu
  • Remove the erroneous free() in xfree_LUstruct_gpu() routine.
• Update ComBLAS interface:
  • Add set(CMAKE_CXX_STANDARD 14) for CombBLAS
  • Pass SuperLU's communicator to CombBLAS constructor.
• Set default fortran format to free and preproess all files in MakeLists.txt.

33. SuperLU_DIST 8.0.0 (May 22, 2022) Version 8.0.0

https://github.com/xiaoyeli/superlu_dist/releases/tag/v8.0.0

34. SuperLU_DIST 8.1.0 (July 05, 2022) MINOR update

https://github.com/xiaoyeli/superlu_dist/releases/tag/v8.1.0