[petsc-dev] no module named cmakegen

[Matthew Knepley]

Can you explain the logPrint() problem? It is not quite clear. I tried to be
careful
that Framework was picklable.

   Matt

On Mon, Aug 23, 2010 at 9:37 PM, Jed Brown <jed at 59a2.org> wrote:

> On Mon, 23 Aug 2010 16:18:27 -0500 (CDT), Satish Balay <balay at mcs.anl.gov>
> wrote:
> > Well currently configure is to be invoked in PETSC_DIR - and the py
> scripts
> > generally use relative paths to find each other. For eg:
> config/configure.py has:
> >
> >   # Should be run from the toplevel
> >   configDir = os.path.abspath('config')
> >   bsDir     = os.path.join(configDir, 'BuildSystem')
>
> Right, and self.petscdir is set regardless of whether the environment
> variable PETSC_DIR has been set.  The trouble comes when you invoke a
> script (that could be run stand-alone, even if that is advanced usage).
> Even if you didn't mind requiring that PWD be chosen carefully before
> calling the maintenance script (which I find ugly), we still don't want
> to copy all the environment checks and error handling from configure.py,
> but we can't find *any* PETSc modules without knowing PETSC_DIR or using
> the relative path hacks.
>
> In this case, the script has to be able to "import script" before the
> PETScMaker type can be declared.  Maybe the right thing to do is to move
> the whole class definition into cmakeboot.main() which acquires petscdir
> as an explicit argument, and can thus set things up correctly.
>
> Any comments/suggestions on what I currently have in cmakeboot.py?
>
>  def main(petscdir, petscarch, argDB=None, framework=None,
> logPrint=printFunction, args=[]):
>    # This can be called as a stand-alone program, or by importing it from
>    # python.  The latter functionality is needed because argDB does not
>    # get written until the very end of configure, but we want to run this
>    # automatically during configure (if CMake is available).
>    #
>    # Strangely, we can't store logPrint in the PETScMaker because
>    # (somewhere) it creeps into framework (which I don't want to modify)
>    # and makes the result unpickleable.  This is not a problem when run
>    # as a standalone program (because the database is read-only), but is
>    # not okay when called from configure.
>    PETScMaker(petscdir,petscarch,argDB,framework).cmakeboot(args,logPrint)
>
> Note that cmakeboot.py can be called independently after configure, it
> does not modify argDB at all, but I have it running during configure
> just so that users of the cmake build don't have any extra steps to
> remember (just configure as usual, the run make from the build
> directory).
>
> Jed
>



-- 
What most experimenters take for granted before they begin their experiments
is infinitely more interesting than any results to which their experiments
lead.
-- Norbert Wiener
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