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

Britton Smith brittonsmith at gmail.com
Mon Mar 31 11:33:57 PDT 2014


Hi Geoffrey,

Only PhasePlot and ProfilePlot have been affected.

Britton


On Mon, Mar 31, 2014 at 7:32 PM, Geoffrey So <gsiisg at gmail.com> wrote:

> Hi,
>
> Thanks for the quick fix.  My question is did the bug affect anything else
> besides PhasePlot (ProjectionPlot, SlicePlot etc)?  My old results using
> PlotCollection and add_phase in parallel should be OK right?
>
> From
> G.S.
>
>
> On Mon, Mar 31, 2014 at 10:13 AM, Britton Smith <brittonsmith at gmail.com>wrote:
>
>> 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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