[yt-users] mpi4py

[Britton Smith]

Hi G.S.,

You should be fine with:
python setup.py install
without the --home flag.
As long as the python you're calling is the one you want mpi4py installed
on, it will be fine.  You just need to make sure that the mpi.cfg file in
the mpi4py source directory is pointing to the right mpi installation.

Britton

On Mon, Mar 21, 2011 at 8:41 PM, <gso at physics.ucsd.edu> wrote:

> In my .bashrc
> export PYTHONPATH=/home/gso/TritonYT/lib/python2.7/site-packages
>
> but the mpi4py was found in /home/gso/TritonYT/lib/python/mpi4py
>
> Should I reinstall mpi4py with
> python setup.py install
> --home=/home/gso/TritonYT/lib/python2.7/site-packages
>
> instead of just:
> python setup.py install --home=/home/gso/TritonYT
> ?
>
> From
> G.S.
>
> > Hi G.S.,
> >
> > For whatever reason, the python you're using doesn't think it has mpi4py
> > installed.  If you installed yt from the install script, you should have
> > set
> > the PYTHONPATH environment variable.  One way you can verify whether you
> > actually have mpi4py installed with that python is by going into the
> > PYTHONPATH directory and checking if there is anything in there named
> > mpi4py.  Can you verify this?
> >
> > Britton
> >
> > On Mon, Mar 21, 2011 at 7:52 PM, <gso at physics.ucsd.edu> wrote:
> >
> >> Just had a revelation, I just had to get rid of the yt.func part for it
> >> to
> >> work since they're already imported from yt.mods... so first issue
> >> resolved
> >>
> >> but the mpi4py issue remains.
> >>
> >> From
> >> G.S.
> >>
> >> > Hi all,
> >> >
> >> > I was trying to use a script that calls yt.func.only_on_root to write
> >> the
> >> > results to an output file if my script is ran in parallel, when it
> >> gave
> >> me
> >> > the following:
> >> >
> >> > Traceback (most recent call last):
> >> >   File "QuantityTotal.py", line 127, in <module>
> >> >     yt.funcs.only_on_root(flush, "frames/StarFormationRate.txt",
> >> "%12.12e
> >> > %12.12e %12.12e %12.12i %12.12e %12.12i %12.12i %12.12i %12.12i\n" %
> >> > (yr, TotEmis, redshift, num_sources, 0, Ion10, IonE3, IonE5,
> >> > num_star))
> >> > NameError: name 'yt' is not defined
> >> >
> >> > I was wondering if either I messed up an import or something similar
> >> since
> >> > this script was from an older version of yt... with
> >> > #from yt.config import ytcfg
> >> > #ytcfg["lagos","serialize"] = "False"
> >> > commented out at the top.  I also thought that maybe because I was
> >> using
> >> > only 1 processor so I tried this on multiple processors on Triton
> >> after
> >> > installing mpi4py by hand, instead I got:
> >> >
> >> >     from mpi4py import MPI
> >> > ImportError: No module named mpi4py
> >> > Traceback (most recent call last):
> >> >   File "QuantityTotal.py", line 6, in <module>
> >> >     from yt.mods import *
> >> >   File "/home/gso/TritonYT/src/yt-hg/yt/mods.py", line 44, in <module>
> >> >     from yt.data_objects.api import \
> >> >   File "/home/gso/TritonYT/src/yt-hg/yt/data_objects/api.py", line 34,
> >> in
> >> > <module>
> >> >     from hierarchy import \
> >> >   File "/home/gso/TritonYT/src/yt-hg/yt/data_objects/hierarchy.py",
> >> line
> >> > 40, in <module>
> >> >     from yt.utilities.parallel_tools.parallel_analysis_interface
> >> import \
> >> >   File
> >> >
> >>
> "/home/gso/TritonYT/src/yt-hg/yt/utilities/parallel_tools/parallel_analysis_interface.py",
> >> > line 47, in <module>
> >> >
> >> > I used the same directory for both my YT installation and mpi4py, so I
> >> > shouldn't have to change anything for my environment variables such as
> >> > where the /lib and /bin are (dev yt 2.1 works fine in serial), so I'm
> >> not
> >> > sure what's going on now.  Has anyone else encountered anything
> >> similar?
> >> > Are they two different problems or one of the same?
> >> >
> >> > From
> >> > G.S.
> >> >
> >> >
> >> > _______________________________________________
> >> > yt-users mailing list
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> >> >
> >>
> >>
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