Vcpkg: Add PETSc

[vmaks]

Hi!

It would be great if you add PETSc.

Link:
https://bitbucket.org/petsc/petsc

Thanks in advance!

[fcooper8472]

+1 for this!

If it's of any help, the Microsoft Innovation Centre Rapperswil used to distribute PETSc for Windows:
http://www.msic.ch/Downloads/Software

This download provides the files and a Visual Studio project template for compiling PETSc:
http://www.msic.ch/Portals/0/downloads/PETScForWindows.zip

Unfortunately it doesn't work past VS2013. It would be fantastic to have PETSc available via vcpkg.

[albertziegenhagel]

Building PETSc requires a Fortran compiler (in general). See #485 and #1098 for progress regarding Fortran support in vcpkg.

Whenever #1098 reaches a status where it can be merged I will provide port files for PETSc including BLAS/LAPACK, ScaLAPACK, METIS, ParMETIS, HYPRE, MUMPS and SuperLU_dist.

[fcooper8472]

Sounds great - thanks.

Since the options for Fortran seem to be intel and pgi, neither of which are (in general) free, would it be worth (and possible) having a non-Fortran PETSc option in addition?

I think on that list you would only lose HYPRE and MUMPS.

[albertziegenhagel]

PGI introduced a free version of it's Fortran compiler for windows a few months ago [1].

I have never build PETSc without Fortran support, so I am not 100% sure what you will lose, but you are right, HYPRE and MUMPS will definitely be missing.

When we get the feature packages (#1205) Fortran could be made an optional dependency.

[1] http://www.pgroup.com/products/community.htm

[fcooper8472]

Thanks for the update, and for all your work on this!

[Voskrese]

https://github.com/Microsoft/vcpkg/pull/1098#issuecomment-320438120

[vmaks]

In my opinion, it's possible to compile PETS without Fortran support and it would be great too have both versions (with Fortran and C++ only).

[Voskrese]

add options in port for petsc, no fortran

[albertziegenhagel]

I tried to build PETSc without Fortran once and I failed at some point because some important dependency was missing. Though this is a long time ago and I am not sure what exactly the reason was and whether things have changed in recent versions of PETSc.

Anyway I have a port of PETSc in a branch at https://github.com/albertziegenhagel/vcpkg/tree/fortran-ports. The port is already written to have Fortran as optional feature, though I have never tried to build it without Fortran.

Edit: in the portfile one would have to exchange the dependency to reference-lapack by just lapack to switch from the original Fortran implementation to the one that is available in the regular set of vcpkg ports.

[Voskrese]

Albert, add please port scotch, pastix

And the question is how real to use in your fork compiler from Intel ICL instead of CL from MSVC, or from pgi pgcc

[fcooper8472]

I tried to build PETSc without Fortran once and I failed at some point because some important dependency was missing. Though this is a long time ago and I am not sure what exactly the reason was and whether things have changed in recent versions of PETSc.

I have built PETSc often without Fortan (on Linux), so I think it should be straightforward, at least for the basic functionality (would have to leave out things like hypre).

@albertziegenhagel I'm fairly unfamiliar with vcpkg; how easy would it be to get a non-fortran package of PETSc into the main vcpkg? Or, do you think fortran support might be added officially soon anyway? (Do you know what is holding that up?)

[albertziegenhagel]

I don't thing it should be to difficult. Based on my port one would just need to remove everything related to fortran and the dependencies that require fortran. Additionally I had to update the MSYS2 version that is downloaded by vcpkg. The commit for that could just be cherry-picked from my branch.

I don't think Fortran support will be integrated in main vcpkg soon. Although my current implementation works, there are multiple issues with it (e.g. problems with the fortran runtime libraries).

[Voskrese]

@albertziegenhagel
configure, no fortran, norm

--with-fortran=0 --with-fc=0 --with-windows-graphics=0 --with-x11=0