[yt-users] Not able to read 2D BoxLib files

[Matthew Turk]

Hi Mani,

Nathan and Andrew's suggestions are about right -- the boxlib frontend
rewrite is definitely going to be the best way to do this, as I think
it's much more generic than the current fragmented state.  I've been
bandwidth limited on that front, but if you look in the main PR you'll
see the outstanding issues.  I think the last one that was presenting
a problem was the issue of varying refinement factors between levels,
but I think Chris Malone and I have figured that out.  I hope to be
able to implement it soon, but I'm going to be on vacation for a few
weeks starting Friday and so I won't be able to look at it during that
time.

Best,

Matt

On Tue, Jul 23, 2013 at 10:41 PM, Mani Chandra <mc0710 at gmail.com> wrote:
> Thanks Nathan! That looks like a good place to start.
>
>
> On Wed, Jul 24, 2013 at 12:29 AM, Nathan Goldbaum <nathan12343 at gmail.com>
> wrote:
>>
>> Hi Mani,
>>
>> Take a look at this pull request from Matt:
>> https://bitbucket.org/yt_analysis/yt/pull-request/501/consolidation-of-boxlib-frontends
>>
>> I suspect it will be a lot easier to write a frontend using this new
>> framework.  I think there are still a few minor issues to work out (that's
>> why it's not in the codebase yet) but it should be a good place to start.
>>
>> Andrew and Matt should have more information about this.
>>
>> -Nathan
>>
>>
>> On Tue, Jul 23, 2013 at 10:27 PM, Mani Chandra <mc0710 at gmail.com> wrote:
>>>
>>> Hi Andrew,
>>>
>>> This is a code which I'm writing now using the BoxLib framework, so it is
>>> not exactly any of Nyx, Castro, Maestro or Orion. But I thought that since
>>> they all use BoxLib, I could simply use any of those frontends (although
>>> those frontends require a lot of parameters specific to those codes, which I
>>> just commented out).
>>>
>>> So I guess I'll have to write a frontend then.
>>>
>>> Thanks,
>>> Mani
>>>
>>>
>>> On Wed, Jul 24, 2013 at 12:21 AM, Andrew Myers <atmyers2 at gmail.com>
>>> wrote:
>>>>
>>>> Hi Mani,
>>>>
>>>> To my knowledge, no one has ever used yt with 2D Orion data. I'm not
>>>> sure if any of the other BoxLib codes support 2D. I think the reason the
>>>> Orion code is getting called is because yt can tell your dataset uses
>>>> BoxLib, but not that it belongs to any of the other BoxLib-based codes (Nyx,
>>>> Castro, or Maestro), so it falls back to Orion.
>>>>
>>>> What simulation code generated this dataset? If it's not one of Nyx,
>>>> Castro, Maestro, or Orion, then you'll probably need to write a new frontend
>>>> for your data.
>>>>
>>>> -Andrew Myers
>>>>
>>>> On Tue, Jul 23, 2013 at 7:50 PM, Mani Chandra <mc0710 at gmail.com> wrote:
>>>>>
>>>>> Hi Everyone,
>>>>>
>>>>> I'm trying to load a 2D BoxLib file into yt. It looks like it is using
>>>>> the same code as the Orion frontend and it fails with the following error:
>>>>>
>>>>>
>>>>> /home/mc/Downloads/yt/yt-x86_64/src/yt-hg/yt/data_objects/static_output.pyc
>>>>> in hierarchy(self)
>>>>>     191                 raise RuntimeError("You should not instantiate
>>>>> StaticOutput.")
>>>>>     192             self._instantiated_hierarchy =
>>>>> self._hierarchy_class(
>>>>> --> 193                 self, data_style=self.data_style)
>>>>>     194         return self._instantiated_hierarchy
>>>>>     195     h = hierarchy  # alias
>>>>>
>>>>>
>>>>> /home/mc/Downloads/yt/yt-x86_64/src/yt-hg/yt/frontends/orion/data_structures.py
>>>>> in __init__(self, pf, data_style)
>>>>>     119         self.data_style = data_style
>>>>>     120
>>>>> --> 121
>>>>> self.readGlobalHeader(header_filename,self.parameter_file.paranoid_read) #
>>>>> also sets up the grid objects
>>>>>     122         self.__cache_endianness(self.levels[-1].grids[-1])
>>>>>     123         AMRHierarchy.__init__(self,pf, self.data_style)
>>>>>
>>>>>
>>>>> /home/mc/Downloads/yt/yt-x86_64/src/yt-hg/yt/frontends/orion/data_structures.py
>>>>> in readGlobalHeader(self, filename, paranoid_read)
>>>>>     194         self.dimension =
>>>>> int(self.__global_header_lines[counter])
>>>>>     195         if self.dimension != 3:
>>>>> --> 196             raise RunTimeError("Orion must be in 3D to use
>>>>> yt.")
>>>>>     197         counter += 1
>>>>>     198         self.Time = float(self.__global_header_lines[counter])
>>>>>
>>>>> Has anyone managed to load 2D Orion files into yt?
>>>>>
>>>>> Thanks,
>>>>> Mani
>>>>>
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