[yt-users] parallel computation

Naiman, Jill jill.naiman at cfa.harvard.edu
Wed Jan 14 10:48:55 PST 2015


Hi Yuxiang,

Quick question below:

On Wed, Jan 14, 2015 at 3:46 AM, Nathan Goldbaum <nathan12343 at gmail.com>
wrote:

>
>
> On Tue, Jan 13, 2015 at 4:29 PM, Yuxiang Qin <
> yuxiangq at student.unimelb.edu.au> wrote:
>
>> Dear YT-Users,
>>
>> I am a fresh man to YT-project. I got a few questions for parallel
>> computation on yt. May I ask for help?
>>
>
> of course, that's what the mailing list is for :)
>
>
>>
>> I tried to do *mpirun -np 4 myscript.py *, but it always failed even
>> when I used very simple script like
>>
>

I think there is a "python" missing from this mpirun call, it should
read: *mpirun
-np 4 python myscript.py  *



>
> In what way does it fail?  If there is an error, can you send a copy/paste
> of the full error?  We have paste.yt-project.org set up to share error
> and code snippets like this.
>
>
>> #!/usr/bin/env python
>> import yt
>>
>>
>> yt.enable_parallelism()
>>
>>
>> fname=('
>> ../../Smaug/NOZCOOL_LateRe_L010N0512/data/snapshot_103/snap_103.0.hdf5')
>>
>> ds = yt.load(fname)
>> pz = yt.ProjectionPlot(ds, 'z', ('gas', 'temperature'),weight_field='
>> density')
>> pz.save()
>>
>> I am using the data from Dr. Alan Duffy. His data is similar to OWLS. So
>> when I tried to run a similar script with sample data downloaded from yt
>> website, it works. Does anyone know what’s going on here? Is anything wrong
>> with my data format or script? How to check it?
>>
>
> If you feel comfortable sharing the data file, one of us could try loading
> your data file on our local machine. If you don't feel comfortable sharing
> the data file publicly, I'm happy to work with you off-list to get a copy
> of the data file.
>
> Best,
>
> Nathan
>
>
>>
>> Warmest sincerely,
>>
>> --
>> Yuxiang Qin
>> PhD Student
>> School of Physics
>> The University of Melbourne
>> VIC, Australia, 3010
>>
>>
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>>
>>
>
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