07/24/2013: Elemental 0.81¶

Documentation: [HTML] [PDF]

Features¶

Matrix sign and square-root functions
Reverse Cholesky and RQ factorizations
Progress towards general-purpose spectral divide and conquer
Lyapunov, Sylvester, and (algebraic) Ricatti solvers
{Hermitian,Normal}FromEVD routines
Greatly simplified packed Householder application, e.g., qr::ApplyQ
“[o ,o ]”, or “CIRC,CIRC” distribution for easily moving between sequential and distributed matrices
MakeConsistent() allows non-owning processes to synchronize after the distributed matrix state changed
An instrumented Gemm example driver to benchmark Allgather and local Gemm performance
Improved experimental F90 interface

Git SHA1 now stored in config file, and relevant version and build information can be printed with –version and –build command-line arguments
Print and Write are now members of io/
Modularized SWIG interface (Michael Grant)
Extended set of view types so that local matrix manipulations are safer (Michael Grant)
EnsurePMRRR() is now used so that stubs are always available
std::bad_alloc’s are now handled a bit more carefully
Eliminated elem-dummy-lib, experimental-c, and experimental-f90
Greatly simplified exception handling
Greatly simplified Householder transform usages
FreeAlignments() is now almost-never needed
Simplified MpiMap
Include guards are now prefixed with “ELEM” in order to avoid collisions

The cmake/elemvariables Makefile include is still behind and is known to not yet work when Qt5 support is enabled (as well as in various other corner cases). There would be value in laying out precisely what development cycle is expected of Elemental users (e.g., if/how to install with CMake, what the easiest way to compile and link a new executable is).