Re: [Visualpython-users] is profiling possible?

[Bruce S. <Bru...@nc...>]

Having seen the whole program, I realized that there's a missing "num += 
1" in the while loop in add_points, which meant that you were creating 
an infinite number of spheres. After that correction, however, on my 
machine rotating the view was sluggish until I changed from sphere to 
points, in which case the program runs very fast and rotation is smooth:

def simulate_hyper():
     from visual import rate, points #sphere
     positions = points()

     def add_points():
         num = 0
         while num < 1000:
             positions.append(pos=get_point())
##            sphere(pos=get_point(), radius = 2**55)
             num += 1

On 5/1/2010 8:40 PM, Thomas Spura wrote:
> I didn't want to publish all my whacky code on a mailinglist, that's
> because there was something missing ;)
>
> The huge radius is because in get_point it creates 3 random numbers in
> the range of -2**63-1 to 2**63. With a smaller radius, you don't see
> anything.
>
> Attached is my code (quite experimental, but working).
> "python -m cProfile own_random.py" is working
> "python -m cProfile 3d_test.py" only shows the window, but no profile :(
>
>
> I'll try the points object out later. It would be nice to get a proper
> profile of the run, so we find out the bottleneck, maybe it's in my
> loop, maybe vpython could be speeded up anyhow :)
>
> Thanks for the fast reply.
>
> 	Thomas
>
> Am Samstag, den 01.05.2010, 20:22 -0400 schrieb Bruce Sherwood:
>    
>> I don't know anything about profiling and hope someone else will
>> comment, though I can say that VPython is multithreaded (the graphical
>> rendering thread runs periodically, interrupting the Python
>> computational thread). I don't know whether that matters.
>>
>> The program fragment you provide is incomplete: what is "get_point()"?
>> Why the gigantic sphere radius of 2**55 = 3.6e16?
>>
>> I would guess that the points object would run faster than a bunch of
>> sphere objects.
>>
>> Bruce Sherwood
>>
>> On 5/1/2010 8:02 PM, Thomas Spura wrote:
>>      
>>> Hi list,
>>>
>>> I try to a hyperplane in random generated points, which is atm really
>>> slow (could be, that it can be done faster, when implemented
>>> differently...)
>>>
>>>       from visual import rate, sphere
>>>
>>>       def add_points():
>>>           num = 0
>>>           while num<   1000:
>>>               sphere(pos=get_point(), radius = 2**55)
>>>
>>>       points = 0
>>>       while 1:
>>>           rate(100)
>>>           if points<   10000:
>>>               add_points()
>>>               points += 1000
>>>           print points
>>>
>>> Therefore I tried to profile it with cProfile and ran it as:
>>> "python -m cProfile my_script.py"
>>>
>>> This worked for any other 'usual' script, but not with the script from
>>> above.
>>>
>>> Am I missing something? Is it not possible with vpython by intention?
>>>
>>> 	Thomas
>>>
>>>
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>