The
Watson Sparse Matrix Package
is proprietary software. Use of this Julia
interface requires that the library libwsmp64.a be downloaded and
installed in the directory
Pkg.dir("WSMP","deps","usr","lib")and that a valid wsmp.lic license file be available in the same
directory.
The library is shipped as a static library. It must be converted to a
dynamic library before use. A rudimentary build.jl file is available
to accomplish this.
Note that libwsmp.so must be linked against a BLAS compiled with
the environment variable USE_BLAS set to 0. An easy way to
accomplish this is to add the line
USE_BLAS64=0
in the Make.user file in the Julia home directory and run
make cleanall
make
make testall
Check that BLAS are compiled to use 32-bit integers with
julia> Base.LinAlg.BlasInt
Int32
The Wssmp type represents a symmetric sparse matrix. A constructor
that takes a symmetric SparseMatrixCSC is available.
By default the Wssmp type uses a CSC (compressed sparse column) representation of the lower triangle of the original matrix. The MSC (modified compressed sparse column) representation, in which the diagonal is stored separately from the strict lower triangle in CSC format, is also available.