[yt-users] Loading RAMSES Data into yt.

Matthew Turk matthewturk at gmail.com
Wed Oct 30 10:35:04 PDT 2013


Hi Kearn,

Did you update yt?  If so, it should have given at least a better error message.

cd $YT_DEST/src/yt-hg
hg pull -r tip http://bitbucket.org/yt_analysis/yt-3.0
hg up -C yt-3.0


-Matt

On Wed, Oct 30, 2013 at 1:29 PM,  <k.grisdale at surrey.ac.uk> wrote:
> Hi,
>
> I completed a new run in RAMSES using the new version of the code and go the same results again.
>
>>>> from yt.mods import *
>>>> pf =  load("output_00001/info_00001.txt") Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
>   File "/Applications/Code/yt/yt-x86_64/src/yt-hg/yt/convenience.py", line 76, in load
>     if c._is_valid(*args, **kwargs): candidates.append(n)
>   File "/Applications/Code/yt/yt-x86_64/src/yt-hg/yt/frontends/art/data_structures.py", line 427, in _is_valid
>     amr_header_vals = read_attrs(fh, amr_header_struct, '>')
>   File "/Applications/Code/yt/yt-x86_64/src/yt-hg/yt/utilities/fortran_utils.py", line 62, in read_attrs
>     vals = list(struct.unpack(net_format, f.read(size)))
> struct.error: unpack requires a string argument of length 892
>
> Is there anything else I can try?
>
> Thanks
>
> Kearn
> On 30 Oct 2013, at 17:02, Matthew Turk <matthewturk at gmail.com> wrote:
>
>> Hi Kearn,
>>
>> I think Romain's suggestion is likely going to fix the issue, but I
>> also just pushed a change that will show the error differently and in
>> a more informative way.  ("hg pull
>> http://bitbucket.org/yt_analysis/yt-3.0 && hg up" in your yt-hg
>> directory will fix it.)
>>
>> -Matt
>>
>> On Wed, Oct 30, 2013 at 12:39 PM,  <k.grisdale at surrey.ac.uk> wrote:
>>> Hi,
>>>
>>> I have been trying to load RAMSES data into yt 2.5. Orginaly it was loading
>>> in but the graphs I was able to produce didn’t make sense.  So I tried to
>>> change to yt3 using the commands
>>>
>>> cd $YT_DEST/src/yt-hg/
>>> hg pull http://bitbucket.org/yt_analysis/yt-3.0
>>> hg up -C yt-3.0
>>> python2.7 setup.py build_ext -i -f
>>>
>>> The commands appear to have worked. But when I try to use yt to load in
>>> RAMSES data I now get this error:
>>>
>>>
>>> Traceback (most recent call last): File
>>> "/Applications/Code/yt/yt-x86_64/src/yt-hg/yt/gui/reason/basic_repl.py",
>>> line 81, in execute exec code in self.locals File "", line 1, in File
>>> "/Applications/Code/yt/yt-x86_64/src/yt-hg/yt/convenience.py", line 76, in
>>> load if c._is_valid(*args, **kwargs): candidates.append(n) File
>>> "/Applications/Code/yt/yt-x86_64/src/yt-hg/yt/frontends/art/data_structures.py",
>>> line 427, in _is_valid amr_header_vals = read_attrs(fh, amr_header_struct,
>>> '>') File
>>> "/Applications/Code/yt/yt-x86_64/src/yt-hg/yt/utilities/fortran_utils.py",
>>> line 62, in read_attrs vals = list(struct.unpack(net_format, f.read(size)))
>>> error: unpack requires a string argument of length 892
>>>
>>>
>>> Any idea what I need to do?
>>>
>>> Thanks
>>>
>>> Kearn
>>>
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