On Thu, Feb 19, 2015 at 1:59 PM, Garth N. Wells <[email protected]> wrote:
> I'm trying to use Hashdist to build FEniCS inside a Docker container.
> I have a few comments and questions:
>
> - The script at http://fenicsproject.org/fenics-install.sh takes an
> incredibly long time to run because it builds *so* many libraries,
> e.g. do we really need to be building openssl, freetype, zlib,
> libtiff, libxml2, sqlite, ncurses, png, etc?
>
> - Can I skip building the loads of libraries that I can get as
> binaries from my package manager?
Yes, you can do that. See for instance the
install/profiles/fenics.host-debian.yaml profile. Some of the packages
above does not have a host-package in hashstack yet, but it should be
relatively easy to add.
> - Building ParMETIS, SCOTCH, MUMPS, etc, and then configuring with
> PETSc is guaranteed to end in tears (there has already been a bug
> report). PETSc should download and configure these because PETSc picks
> (and sometimes patches) compatible versions. If PETSc doesn't do the
> picking, then solvers will seg fault.
In hashdist we are trying to build these libraries in the same way as
PETSc builds them, but you can can let PETSc build them by adding them
to the 'download' argument in the profile, like this:
petsc:
download: |
parmetis, scotch, mumps, scalapack, blacs, superlu_dist
...
> - If the objective is a consistent 'stack', then using a Linux
> container is a better approach.
>
> - For decent performance, the Hashdist installer should install an
> optimised BLAS library, not reference BLAS.
It should be relatively easy to switch to OpenBLAS.
> - While writing this message, Hashdist has crashed on petsc4py:
>
> File
> "/home/garth/.local/lib/python2.7/site-packages/Cython-0.21-py2.7-linux-x86_64.egg/Cython/Compiler/Main.py",
> line 22, in <module>
> 2015/02/19 12:56:05 - INFO: [package:run_job] from .Scanning
> import PyrexScanner, FileSourceDescriptor
> 2015/02/19 12:56:05 - INFO: [package:run_job] ImportError:
> /home/garth/.local/lib/python2.7/site-packages/Cython-0.21-py2.7-linux-x86_64.egg/Cython/Compiler/Scanning.so:
> undefined symbol: PyUnicodeUCS4_DecodeUTF8
> 2015/02/19 12:56:05 - ERROR: [package:run_job] Command '[u'/bin/bash',
> '_hashdist/build.sh']' returned non-zero exit status 1
> 2015/02/19 12:56:05 - ERROR: [package:run_job] command failed (code=1);
> raising
I haven't seen this before. Could you report an issue for hashstack at
https://github.com/hashdist/hashstack/?
Johannes
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