[yt-users] PhasePlot give inconsistent results with different core count and fieldc

[Britton Smith]

Hi again,

The pull request has been accepted.  You can do "yt update" and you should
be all set.

Britton


On Mon, Mar 31, 2014 at 4:03 PM, Britton Smith <brittonsmith at gmail.com>wrote:

> Hi Geoffrey,
>
> The operation to combine profile and phase plot data after running in
> parallel was missing, so what you were seeing was the results from only one
> of the processors.  I have just filed a pull request to fix this.  Now, I
> get the same results independent of processor number.  Please. have a look
> at the PR here<https://bitbucket.org/yt_analysis/yt/pull-request/782/adding-parallel-support-to-profilend/diff> and
> test it out if you can.
>
> Britton
>
>
> On Mon, Mar 31, 2014 at 2:14 PM, Matthew Turk <matthewturk at gmail.com>wrote:
>
>> Hi Geoffrey,
>>
>> Britton and I verified you are correct, there is a problem with the
>> ProfileND objects not conducting their parallel reduction operation.
>> A fix is forthcoming.
>>
>> -Matt
>>
>> On Mon, Mar 31, 2014 at 5:31 AM, Geoffrey So <gsiisg at gmail.com> wrote:
>> > The following script gives me different results in the 2d phase plot
>> when I
>> > use multiple cores and switch the fieldc parameter.  The results are
>> > consistent if I only use a single core.  Some of the plots produced
>> seems
>> > like it is missing data points or under-sampled, so I'm guessing maybe
>> not
>> > all the data from all the cores were collected at the end.
>> >
>> > From
>> > G.S.
>> >
>> >
>> #-----------------------------------------------------------------------------------
>> > from yt.mods import *
>> >
>> > i=2
>> > file = "RD%04i" % i
>> > fn = file+"/"+file
>> > pf=load(fn)
>> > dd=pf.h.all_data()
>> >
>> > fieldx='Density'
>> > fieldy='Temperature'
>> > fieldc='CellVolumeCode'
>> > #fieldc='CellVolume'
>> > #fieldc='CellMassMsun'
>> > #fieldc='CellMass'
>> > #fieldc='Ones'
>> >
>> > pplot = PhasePlot(dd, fieldx, fieldy, [fieldc],weight_field=None)
>> > pplot.save('example/'+file)
>> >
>> #---------------------------------------------------------------------------------------
>> >
>> >
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