[Yt-dev] possible bug?

Matthew Turk matthewturk at gmail.com
Mon Apr 5 13:50:26 PDT 2010


Actually, Eric, if you don't know where it's hanging, the yt docs have  
a section on debugging and driving that describes how to instigate a  
stack printout at any time as well as how to force the code to raise a  
runtime error, which you can catch with pdb. Try that first. :)



On Apr 5, 2010, at 12:57 PM, Eric Hallman <hallman13 at gmail.com> wrote:

> I'll try those.  Not sure how to tell bisect which version is "good"  
> though.  How do I specify versions?  How do I know which one worked?
>
>
> On Apr 5, 2010, at 3:01 PM, Britton Smith wrote:
>
>> I'm a bit more confused that it's also happening in serial, but  
>> that will make debugging easier.  Let us know when you track down  
>> the last working version.  In fact, if you just want to insert a  
>> couple print statements into the write_filtered_list routine in  
>> HaloProfiler.py, you might be able to figure out just where it's  
>> hanging up.
>>
>> Britton
>>
>> On Mon, Apr 5, 2010 at 12:43 PM, Eric Hallman <hallman13 at gmail.com>  
>> wrote:
>> Guys,
>>   thanks for the help.  I was stuck on where to go next.
>>
>> This is breaking in the same way in serial or parallel.  Don't know  
>> if that helps in diagnosing or not.  It is apparently writing the  
>> virial_filter.out file.
>>
>> I will go back to a working version.  For sure it was working as  
>> recently as about a month ago.
>>
>>
>> On Apr 5, 2010, at 1:49 PM, Britton Smith wrote:
>>
>>> Hi Eric,
>>>
>>> Matt's suggestion would be helpful.  If you were running the code  
>>> successfully at any time recently, it should be simple to track  
>>> down the revision where it breaks.
>>> Does the halo filter list actually get written out?  I assume this  
>>> is only hanging when running in parallel, but correct me if I'm  
>>> wrong on that.  Looking at the light cone and halo profiler code,  
>>> the function where the hang occurs is called from functions that  
>>> have various parallel decorators around them, which are probably  
>>> adding a number of barriers.
>>>
>>> Britton
>>>
>>> On Mon, Apr 5, 2010 at 11:35 AM, Matthew Turk  
>>> <matthewturk at gmail.com> wrote:
>>> Eric, if you can run "hg bisect" (see the hg book online) to  
>>> identify the revision this started at, that would be very handy. I  
>>> would start b going back only a dozen or so. Does this problem  
>>> occur on smaller datasets on, say your laptop or desktop?
>>>
>>>
>>>
>>>
>>> On Apr 5, 2010, at 10:14 AM, Eric Hallman <hallman13 at gmail.com>  
>>> wrote:
>>>
>>> I am getting a hang when I run the lightcone tools on ranger, and  
>>> no debug info is coming out at the hang. this is in the hg version  
>>> (current) of yt.
>>>
>>> The routines I'm running is called test_vel_mask.py, which is  
>>> creating a lightcone with a halo map that includes the bulk line  
>>> of sight halo velocity.  It includes  a slight modification of  
>>> HaloMask.py to include velocities.  However, I removed my changes,  
>>> and ran again with the same hang. The routine below is copied  
>>> nearly directly from the yt docs, with minor changes.
>>>
>>> Routine is attached as test_wo_vel.py
>>> <test_wo_vel.py>
>>>
>>>
>>>
>>> Hang occurs with text line:
>>> yt.lagos   INFO       2010-04-05 12:06:15,657 Writing filtered  
>>> halo list to /scratch/00688/tg458377/box_size_study/50Mpc_1024/ 
>>> run_12_cl_5D/RD0004/virial_filter.out.
>>>
>>> traceback is attached as test_vel_traceback.out
>>>
>>> <test_vel_traceback.out>
>>>
>>>
>>>
>>>
>>> Thanks for any help...
>>>
>>> cheers
>>>
>>> Eric Hallman
>>> Google Voice: (774) 469-0278
>>> hallman13 at gmail.com
>>>
>>>
>>>
>>>
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>>
>> Eric Hallman
>> Google Voice: (774) 469-0278
>> hallman13 at gmail.com
>>
>>
>>
>>
>>
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>>
>>
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>
> Eric Hallman
> Google Voice: (774) 469-0278
> hallman13 at gmail.com
>
>
>
>
> _______________________________________________
> Yt-dev mailing list
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> http://lists.spacepope.org/listinfo.cgi/yt-dev-spacepope.org
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