OpenBLAS performs better than LAPACK, the reference implementation.
This is also consistent with the choice of BLAS/LAPACK implementations
made in most other packages.
* gnu/packages/maths.scm (petsc)[inputs]: Replace LAPACK by OPENBLAS.
[arguments]: Pass "--with-openblas=1".
`(("python" ,python-2)))
(inputs
`(("gfortran" ,gfortran)
- ("lapack" ,lapack)
+ ("openblas" ,openblas)
("superlu" ,superlu)
;; leaving out hdf5 and fftw, as petsc expects them to be built with mpi
;; leaving out opengl, as configuration seems to only be for mac
#:configure-flags
`("--with-mpi=0"
"--with-openmp=1"
+ "--with-openblas=1"
"--with-superlu=1")
#:make-flags
;; Honor (parallel-job-count) for build. Do not use --with-make-np,