Elemental version 0.87.2

Minor changes since 0.87.0

• Fixed UpdatedMappedDiagonal prototype in El/blas_like/level1/decl.hpp (to avoid undefined references)
• Fixed call to lin_solve::ScaLAPACKHelper in src/lapack_like/solve/Linear.cpp

Notable functionality additions

• (Arbitrary-precision) real and complex Lenstra/Lenstra/Lovasz (LLL) lattice reduction
• (Arbitrary-precision) real and complex Block Korkine-Zolotarev (BKZ) and various enumeration heuristic extensions (BKZ 2.0 and y-sparse enumeration)
• (Arbitrary-precision) distributed divide-and-conquer real symmetric tridiagonal EVD
• (Arbitrary-precision) distributed divide-and-conquer bidiagonal SVD
• (Arbitrary-precision) distributed Aggressive Early Deflation Hessenberg QR algorithms
• (Arbitrary-precision) distributed high-performance level 3 BLAS complex triangular eigenvector computation
• (Arbitrary-precision) distributed high-performance pseudospectra
• (Arbitrary-precision) distributed real and complex sparse linear solvers (including a special interface for symmetric quasi-semidefinite matrices)
• (Arbitrary-precision) distributed real and complex generalized sparse least squares solvers (including LSE and GLM)
• (Arbitrary-precision) distributed dense and sparse Linear, Quadratic, and Second-Order Cone Programming

Packaging additions

• Ubuntu packages with a PPA at https://launchpad.net/~libelemental/+archive/ubuntu/ppa
• Redhat/Fedora packages https://copr.fedorainfracloud.org/coprs/rhl/elemental/

Relevant toolchain bugs

• GCC Release builds are (by default) blocked on OSX due to -O3 optimizations leading to a stack_not_16_byte_aligned_error error. Please see #181 for a more detailed discussion. The CMake flag -D EL_IGNORE_OSX_GCC_ALIGNMENT_PROBLEM=ON will prevent the error for OSX GCC Release builds.
• OpenMPI versions before 1.8.1 are prevented by the CMake configuration due to bugs in OpenMPI 1.6.5's handling of complex datatypes

Major contributors for this release

• Haim Avron [email protected]
  • Contributed towards the current Debian packaging process
  • Numerous useful bug reports (including one effecting 0.87.0)
• David Blom [email protected]
  • Added MaxAbs implementations
• Jake Bolewski [email protected]
  • Made Python support much more robust
  • Fixed CMake OSX RPATH handling
  • Helped introduce Travis CI
• Rodrigo Canales [email protected]
  • Fixed bugs in mkl::Trrk and xgemmt calls
• Jiahao Chen [email protected]
  • Set up the CMake testing framework
  • Helped introduce Travis CI
• Martin Copik [email protected]
  • Fixed PMRRR double lock free bug
  • Fixed ScaLAPACK GFORTRAN_LIB configuration bug
  • Fixed METIS and ParMETIS configuration bugs
• Ron Estrin [email protected]
  • Substantially improved the LLL performance
• Jeff Hammond [email protected]
  • Help with numerous toolchain issues (especially the Intel compilers)
• Yves Ineichen [email protected]
  • Contributed towards the current Debian packaging process
  • Numerous useful bug reports
• Ryan Lewis [email protected]
  • Spearheaded the Fedora packaging
  • Setting up the (soon-to-be-integrated) Jenkins CI
• Yingzhou (Ryan) Li [email protected]
  • Added proper CMake project exports
  • Several bug reports on process grids with viewing processes
• Tim Moon [email protected]
  • Added the high-performance complex triangular eigensolver (see https://arxiv.org/abs/1607.01477)
• Andreas Noack [email protected]
  • Helped introduce Travis CI
• Jack Poulson [email protected]
  • Added Aggressive Early Deflation Hessenberg QR implementation
  • Added Divide and Conquer bidiagonal SVD
  • Added Divide and Conquer real symmetric tridiagonal EVP
  • Added lattice reduction functionality
  • Added Interior Point Methods and sparse generalized least squares methods
  • Extended El::Complex class to support DoubleDouble, QuadDouble, Quad, and BigFloat
  • Added MPI support for BigFloat
  • Introduced LaunchPad PPA
  • Adminstrivia and making the build system more robust
• Mukundhan Selvam [email protected]
  • Bug reports for sparse-direct solvers
  • Bug reports for the Intel compilers