visualpython-users

[Visualpython-users] ubuntu 9.10 installation for dummies...please

[<b2t...@uc...>]

Hi,

I've used python on windows vista for a year now, but I just switched over
to Ubuntu 9.10.  I've read the instructions in Hackers.txt and I can't
figure it out.  Is there any thread that has thoroughly addressed this for
true beginners of Ubuntu?

Line by line terminal commands would be helpful!

Thanks,
Benjamin Thompson
UCSD Dept. of Structural Engineering
619-792-0925

[Visualpython-users] Latest VPython works on Ubuntu 10.04

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

Duh. The reason why the 3D text object didn't work on Ubuntu 10.04 was 
simply that I hadn't installed the font-related modules FontTools, 
ttfquery, and Polygon! All works now.

Bruce Sherwood

Re: [Visualpython-users] Compiling on Ubuntu 10.04

[Guy K. K. <g....@ma...>]

On Sat, 29 May 2010 10:14:26 Eric Ayars wrote:
> They give me vpython 5.12, which I know is not the latest version but after
> the absurd amount of time I've blown on this problem I really don't care
> whether it's the latest or not!

If you're then just using a binary packaged version of python-visual, you do 
not need the "*-dev" packages. These are *only* required for 
building/compiling. So you may want to try to chuck these out and see if it 
still works (it should).

On a side note, I've found that aptitude instead of apt-get is better at 
resolving dependencies, and it keeps the system cleaner, as it knows and 
tracks what packages were installed purely as a dependency, and it kicks them 
out automatically again as soon as they're orphaned. It should be for most 
purposes a drop in replacement for apt-get.

Guy

-- 
Guy K. Kloss
Institute of Information and Mathematical Sciences
Te Kura Pūtaiao o Mōhiohio me Pāngarau
Massey University, Albany (North Shore City, Auckland)
473 State Highway 17, Gate 1, Mailroom, Quad B Building
voice: +64 9 414-0800 ext. 9266   fax: +64 9 441-8181
G....@ma... http://www.massey.ac.nz/~gkloss

Re: [Visualpython-users] Compiling on Ubuntu 10.04

[Eric A. <Ay...@ma...>]

I'm going through the same problems with 10.04: 
	apt-get install python-visual
by itself appears to work but any attempts to create any visual objects crash python with a random assortment of gtkgl/opengl errors.

Here's the method I've found that works:

	apt-get install libboost-python-dev libboost-signals-dev libboost-thread-dev
	apt-get install libgtkglextmm-x11-1.2-0 libgtkglextmm-x11-1.2-dev
	apt-get install gtkgl-dev
	apt-get install python-gtkglext1
	apt-get install python-visual

Some of that may be redundant, and the order may or may not be important; but I am now reasonably certain that on a fresh 64-bit install of 10.04 on a Core2Duo, those commands in that order will give me a working sphere(). They give me vpython 5.12, which I know is not the latest version but after the absurd amount of time I've blown on this problem I really don't care whether it's the latest or not!

-ea

-- --- ----- ------- ----------- -------------
Dr. Eric Ayars
Associate Professor of Physics
California State University, Chico
ay...@ma...

On May 24, 2010, at 9:44 PM, Bruce Sherwood wrote:

> I did a clean install of Ubuntu 10.04 on a Windows machine and tried to 
> compile Visual. I'm stuck in the configure phase and wonder whether 
> someone can help me get unstuck.
> 
> gtkglextmm depends on gtkmm-2.4, which the configure machinery finds 
> okay (/usr/lib/libgtkmm-2.4) despite there being nothing in 
> /usr/lib/pkgconfig about gtkmm-2.4.
> 
> gtkglextmm also depends on gdkglextmm, which in turn depends on 
> gdkmm-2.4, which the configure machinery claims doesn't exist despite 
> the existence of /usr/lib/libgdkmm-2.4 (as with gtkmm, there's nothing 
> about gdkmm in /usr/lib/pkgconfig).
> 
> So my question is, how does the configure machinery find 
> /usr/lib/libgtkmm-2.4 but not /usr/lib/libgdkmm-2.4? And what should I 
> do to compile the latest source?
> 
> Whoever packaged the working python-visual package for Ubuntu 10.04 
> presumably didn't have my problem, or got around it somehow. When I 
> examine the Ubuntu source used to create the package, I don't see any 
> difference in the configure machinery.
> 
> Bruce
> 
> P.S. I should comment that some auxiliary files, such as the cactus 
> photo in stonehenge.py, are missing from the Ubuntu package. That's my 
> fault; I discovered only rather recently that the make procedure for 
> Linux didn't include a couple of these auxiliary files.
> 
> 
> 
> ------------------------------------------------------------------------------
> 
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

[Visualpython-users] Ubuntu

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

I managed to build the latest VPython on the latest Ubuntu (10.04), both 
32-bit and 64-bit.

As I reported earlier, there was a problem that the linker objected to 
-lboost_python-mt. The solution was to change the reference in the src 
Makefile to -lboost_python. Apparently there has been some change in the 
Boost machinery that made this necessary.

There is at least one remaining problem. 3D text fails for all choices 
of font, with the error message that something is wrong with the 
specified font.

Bruce Sherwood

Re: [Visualpython-users] Compiling on Ubuntu 10.04

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

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content="text/html;charset=UTF-8" http-equiv="Content-Type">
  <title></title>
</head>
<body bgcolor="#ffffff" text="#000000">
Thanks much, Guy. Your help got me most of the way through compiling,
though I'm currently stopped in the final linking phase with "cannot
find -lboost_python-mt", which puzzles me.<br>
<br>
Some time ago I found the following on the web, which turns out to be
relevant for Boost 1.40 on Ubuntu 10.04: "Furthermore building pyrap
with boost-1.37 and gcc-4.3.2 gave an error due to a missing include.
The following patch has to be applied to boost:"<br>
<br>
    In /usr/include (probably), change
/boost/python/detail/translate_exception.hpp<br>
    ===================================================================<br>
    --- boost/python/detail/translate_exception.hpp (revision 50228)<br>
    +++ boost/python/detail/translate_exception.hpp (working copy)<br>
    @@ -9,6 +9,7 @@<br>
 <br>
    # include &lt;boost/call_traits.hpp&gt;<br>
     # include &lt;boost/type_traits/add_const.hpp&gt;<br>
    +# include &lt;boost/type_traits/add_reference.hpp&gt;<br>
 <br>
    # include &lt;boost/function/function0.hpp&gt;<br>
<br>
I'm more and more curious about how someone built the python-visual
package for Ubuntu 10.04, using ostensibly the same source and build
procedures.<br>
<br>
Bruce<br>
<br>
P.S. Yeah, I misspoke about "clean" install. What I meant was I'd done
a dual-boot install on a Windows machine, and by "clean" I meant that I
started from scratch rather than upgrading from an earlier version of
Ubuntu.<br>
<br>
Guy K. Kloss wrote:
<blockquote cite="mid:201...@ma..."
 type="cite">
  <pre wrap="">On Tue, 25 May 2010 16:44:34 Bruce Sherwood wrote:
  </pre>
  <blockquote type="cite">
    <pre wrap="">I did a clean install of Ubuntu 10.04 on a Windows machine and tried to
compile Visual. I'm stuck in the configure phase and wonder whether
someone can help me get unstuck.
    </pre>
  </blockquote>
  <pre wrap=""><!---->
What is a "clean install on a Windows machine"? In my books, when installing 
Linux on a box, it's not a Windows box anymore ...

  </pre>
  <blockquote type="cite">
    <pre wrap="">gtkglextmm depends on gtkmm-2.4, which the configure machinery finds
okay (/usr/lib/libgtkmm-2.4) despite there being nothing in
/usr/lib/pkgconfig about gtkmm-2.4.

gtkglextmm also depends on gdkglextmm, which in turn depends on
gdkmm-2.4, which the configure machinery claims doesn't exist despite
the existence of /usr/lib/libgdkmm-2.4 (as with gtkmm, there's nothing
about gdkmm in /usr/lib/pkgconfig).

So my question is, how does the configure machinery find
/usr/lib/libgtkmm-2.4 but not /usr/lib/libgdkmm-2.4? And what should I
do to compile the latest source?
    </pre>
  </blockquote>
  <pre wrap=""><!---->
Usually the headers are in specific "-dev" packages on Debian/Ubuntu systems, 
as they're not strictly needed for execution, but only for building 
(development). If I search on my system for a libgdkmm header, this is what I 
get:

$ dpkg -S /usr/lib/gdkmm-2.4/include/gdkmmconfig.h
libgtkmm-2.4-dev: /usr/lib/gdkmm-2.4/include/gdkmmconfig.h

Same with this one:

$ dpkg -S /usr/include/gdkmm-2.4/gdkmm.h
libgtkmm-2.4-dev: /usr/include/gdkmm-2.4/gdkmm.h

So, try installing the package "libgtkmm-2.4-dev".


One thing I often found useful in getting the right packages in was to do an 
"apt-get build-dep &lt;package name&gt;". So in this case "apt-get build-dep python-
visual". This resolved the build dependencies of the python-visual packages as 
it is in the repositories, but as changes were often incremental, most of the 
-dev packages were pulled in this way already, and I've had a whole lot less 
to worry about.

HTH,

Guy
_______________________________________________
Visualpython-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Vis...@li...">Vis...@li...</a>
<a class="moz-txt-link-freetext" href="https://lists.sourceforge.net/lists/listinfo/visualpython-users">https://lists.sourceforge.net/lists/listinfo/visualpython-users</a>
  </pre>
</blockquote>
</body>
</html>

Re: [Visualpython-users] Compiling on Ubuntu 10.04

[Guy K. K. <g....@ma...>]

On Tue, 25 May 2010 16:44:34 Bruce Sherwood wrote:
> I did a clean install of Ubuntu 10.04 on a Windows machine and tried to
> compile Visual. I'm stuck in the configure phase and wonder whether
> someone can help me get unstuck.

What is a "clean install on a Windows machine"? In my books, when installing 
Linux on a box, it's not a Windows box anymore ...

> gtkglextmm depends on gtkmm-2.4, which the configure machinery finds
> okay (/usr/lib/libgtkmm-2.4) despite there being nothing in
> /usr/lib/pkgconfig about gtkmm-2.4.
> 
> gtkglextmm also depends on gdkglextmm, which in turn depends on
> gdkmm-2.4, which the configure machinery claims doesn't exist despite
> the existence of /usr/lib/libgdkmm-2.4 (as with gtkmm, there's nothing
> about gdkmm in /usr/lib/pkgconfig).
>
> So my question is, how does the configure machinery find
> /usr/lib/libgtkmm-2.4 but not /usr/lib/libgdkmm-2.4? And what should I
> do to compile the latest source?

Usually the headers are in specific "-dev" packages on Debian/Ubuntu systems, 
as they're not strictly needed for execution, but only for building 
(development). If I search on my system for a libgdkmm header, this is what I 
get:

$ dpkg -S /usr/lib/gdkmm-2.4/include/gdkmmconfig.h
libgtkmm-2.4-dev: /usr/lib/gdkmm-2.4/include/gdkmmconfig.h

Same with this one:

$ dpkg -S /usr/include/gdkmm-2.4/gdkmm.h
libgtkmm-2.4-dev: /usr/include/gdkmm-2.4/gdkmm.h

So, try installing the package "libgtkmm-2.4-dev".


One thing I often found useful in getting the right packages in was to do an 
"apt-get build-dep <package name>". So in this case "apt-get build-dep python-
visual". This resolved the build dependencies of the python-visual packages as 
it is in the repositories, but as changes were often incremental, most of the 
-dev packages were pulled in this way already, and I've had a whole lot less 
to worry about.

HTH,

Guy

-- 
Guy K. Kloss
Institute of Information and Mathematical Sciences
Te Kura Pūtaiao o Mōhiohio me Pāngarau
Massey University, Albany (North Shore City, Auckland)
473 State Highway 17, Gate 1, Mailroom, Quad B Building
voice: +64 9 414-0800 ext. 9266   fax: +64 9 441-8181
G....@ma... http://www.massey.ac.nz/~gkloss

[Visualpython-users] Compiling on Ubuntu 10.04

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

I did a clean install of Ubuntu 10.04 on a Windows machine and tried to 
compile Visual. I'm stuck in the configure phase and wonder whether 
someone can help me get unstuck.

gtkglextmm depends on gtkmm-2.4, which the configure machinery finds 
okay (/usr/lib/libgtkmm-2.4) despite there being nothing in 
/usr/lib/pkgconfig about gtkmm-2.4.

gtkglextmm also depends on gdkglextmm, which in turn depends on 
gdkmm-2.4, which the configure machinery claims doesn't exist despite 
the existence of /usr/lib/libgdkmm-2.4 (as with gtkmm, there's nothing 
about gdkmm in /usr/lib/pkgconfig).

So my question is, how does the configure machinery find 
/usr/lib/libgtkmm-2.4 but not /usr/lib/libgdkmm-2.4? And what should I 
do to compile the latest source?

Whoever packaged the working python-visual package for Ubuntu 10.04 
presumably didn't have my problem, or got around it somehow. When I 
examine the Ubuntu source used to create the package, I don't see any 
difference in the configure machinery.

Bruce

P.S. I should comment that some auxiliary files, such as the cactus 
photo in stonehenge.py, are missing from the Ubuntu package. That's my 
fault; I discovered only rather recently that the make procedure for 
Linux didn't include a couple of these auxiliary files.

[Visualpython-users] Curve radius segmentation fault

[Pablo G. C. <ozr...@gm...>]

Hi.

I need to define curves with a variable radius.

I have this simple code:

c=curve()
c.append(pos=(0,0,0), radius=0.1)
c.append(pos=(1,0,0), radius=0.1)
c.append(pos=(1,1,0), radius=0.2)

When I try, it crashes with a segmentation fault.

I just want to know if this was supposed to work so there's something wrong
with my installation or if I have to look for another sollution to my
problem.

Thank you very much!

    Pablo.

Re: [Visualpython-users] 10.04 installation problem

[Guy K. K. <g....@ma...>]

On Fri, 14 May 2010 10:50:45 Eric Ayars wrote:
> If anyone has any suggestions, I'd love to hear them. I'm at a complete
> loss on this one.

Somehow sounds like your VM cannot take advantage of hardware accelerated 
OpenGL. Maybe a driver issue, or something along the borderline of 
virtualisation using Parallels.

HTH,

Guy

-- 
Guy K. Kloss
Institute of Information and Mathematical Sciences
Te Kura Pūtaiao o Mōhiohio me Pāngarau
Massey University, Albany (North Shore City, Auckland)
473 State Highway 17, Gate 1, Mailroom, Quad B Building
voice: +64 9 414-0800 ext. 9266   fax: +64 9 441-8181
G....@ma... http://www.massey.ac.nz/~gkloss

Re: [Visualpython-users] 10.04 installation problem

[Danny C. <dan...@gm...>]

Sounds like a video driver issue. Have you tried building the source?

On Thursday, May 13, 2010, Eric Ayars <Ay...@ma...> wrote:
> Hello,
> I've been refreshing computers in my teaching lab, and I've hit a bit of a snag that has me stumped. On a fresh install of Ubuntu 10.04LTS, installing vpython is as easy as 	sudo apt-get install python-visualand IT WORKS!
> However, when I try installing the same Ubuntu 10.04LTS under Parallels Desktop on my Mac, the same apt-get seems to work, but then when I import visual and try something like x=sphere() I get this:
> VPython ***CRITICAL ERROR***: /build/buildd/python-visual-5.12/./src/gtk2/render_surface.cpp:88: render_surface: failed to initialize any OpenGL configuration, Aborting.
> I have exhausted my expertise on this one. I don't think it's a package issue, as I've done this:	dpkg -l > virtual	# on the VM that does not work	dpkg -l > native	# on the non-VM that works	diff virtual native	# shows no differences
> If anyone has any suggestions, I'd love to hear them. I'm at a complete loss on this one.
>
> -- --- ----- ------- ----------- -------------Dr. Eric AyarsAssociate Professor of PhysicsCalifornia State University, Chi...@ma...
>
>
>
>

[Visualpython-users] 10.04 installation problem

[Eric A. <Ay...@ma...>]

Hello,

I've been refreshing computers in my teaching lab, and I've hit a bit of a snag that has me stumped. On a fresh install of Ubuntu 10.04LTS, installing vpython is as easy as 
	sudo apt-get install python-visual
and IT WORKS!

However, when I try installing the same Ubuntu 10.04LTS under Parallels Desktop on my Mac, the same apt-get seems to work, but then when I import visual and try something like x=sphere() I get this:

VPython ***CRITICAL ERROR***: /build/buildd/python-visual-5.12/./src/gtk2/render_surface.cpp:88: render_surface: failed to initialize any OpenGL configuration, Aborting.

I have exhausted my expertise on this one. I don't think it's a package issue, as I've done this:
	dpkg -l > virtual	# on the VM that does not work
	dpkg -l > native	# on the non-VM that works
	diff virtual native	# shows no differences

If anyone has any suggestions, I'd love to hear them. I'm at a complete loss on this one.

-- --- ----- ------- ----------- -------------
Dr. Eric Ayars
Associate Professor of Physics
California State University, Chico
ay...@ma...

Re: [Visualpython-users] Crash on py2exe

[Davidmh <dav...@gm...>]

Where? In the setup for py2exe or in the original source code?

Thanks for your help.

On Wed, May 12, 2010 at 8:41 PM, Stef Mientki <ste...@gm...> wrote:
>
> On 12-05-2010 18:04, Davidmh wrote:
> > Hello.
> >
> > I have compiled successfully several programs to Windows binaries usin
> > py2exe, but when I try to execute a working program depending on
> > VPython, I get the following error:
> >
> > Traceback (most recent call last):
> >   File "mirage.py", line 2, in <module>
> >   File "visual\__init__.pyc", line 66, in <module>
> >   File "visual\ui.pyc", line 3, in <module>
> >   File "visual\materials.pyc", line 151, in <module>
> >   File "visual\materials.pyc", line 129, in loadTGA
> > IOError: [Errno 2] No such file or directory:
> > 'C:\\pyex\\dist\\library.zip\\visual/turbulence3.tga'
> >
> > I use Python 2.5, and as I have seen, there have been more people with
> > the same problem. The only solution reported I have found is simply
> > deleting the definition on the module source code. Although inelegant,
> > it could work, as long I am not using any materials in my program; but
> > I don't like editing that kind of source.
> >
> > I think the option "excludes" could be used, but after several tries I
> > haven't been successful.
> >
> > Any ideas?
> >
> >
> I always include all the tga files explicitly:
>  if Include_VPython :
>    Data_Files.append ( ( r'visual', glob.glob (
>      r'P:\Python\Lib\site-packages\visual\*.tga' )))
> chers,
> Stef
> > Thank you;
> >
> > David Menéndez.
> >
> > ------------------------------------------------------------------------------
> >
> > _______________________________________________
> > Visualpython-users mailing list
> > Vis...@li...
> > https://lists.sourceforge.net/lists/listinfo/visualpython-users
> >
>
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users

Re: [Visualpython-users] Crash on py2exe

[Stef M. <ste...@gm...>]

On 12-05-2010 18:04, Davidmh wrote:
> Hello.
>
> I have compiled successfully several programs to Windows binaries usin
> py2exe, but when I try to execute a working program depending on
> VPython, I get the following error:
>
> Traceback (most recent call last):
>   File "mirage.py", line 2, in <module>
>   File "visual\__init__.pyc", line 66, in <module>
>   File "visual\ui.pyc", line 3, in <module>
>   File "visual\materials.pyc", line 151, in <module>
>   File "visual\materials.pyc", line 129, in loadTGA
> IOError: [Errno 2] No such file or directory:
> 'C:\\pyex\\dist\\library.zip\\visual/turbulence3.tga'
>
> I use Python 2.5, and as I have seen, there have been more people with
> the same problem. The only solution reported I have found is simply
> deleting the definition on the module source code. Although inelegant,
> it could work, as long I am not using any materials in my program; but
> I don't like editing that kind of source.
>
> I think the option "excludes" could be used, but after several tries I
> haven't been successful.
>
> Any ideas?
>
>   
I always include all the tga files explicitly:
  if Include_VPython :
    Data_Files.append ( ( r'visual', glob.glob (
      r'P:\Python\Lib\site-packages\visual\*.tga' )))
chers,
Stef
> Thank you;
>
> David Menéndez.
>
> ------------------------------------------------------------------------------
>
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>   

[Visualpython-users] Crash on py2exe

[Davidmh <dav...@gm...>]

Hello.

I have compiled successfully several programs to Windows binaries usin
py2exe, but when I try to execute a working program depending on
VPython, I get the following error:

Traceback (most recent call last):
  File "mirage.py", line 2, in <module>
  File "visual\__init__.pyc", line 66, in <module>
  File "visual\ui.pyc", line 3, in <module>
  File "visual\materials.pyc", line 151, in <module>
  File "visual\materials.pyc", line 129, in loadTGA
IOError: [Errno 2] No such file or directory:
'C:\\pyex\\dist\\library.zip\\visual/turbulence3.tga'

I use Python 2.5, and as I have seen, there have been more people with
the same problem. The only solution reported I have found is simply
deleting the definition on the module source code. Although inelegant,
it could work, as long I am not using any materials in my program; but
I don't like editing that kind of source.

I think the option "excludes" could be used, but after several tries I
haven't been successful.

Any ideas?


Thank you;

David Menéndez.

Re: [Visualpython-users] possible memory leak?

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

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <meta content="text/html;charset=ISO-8859-1" http-equiv="Content-Type">
</head>
<body bgcolor="#ffffff" text="#000000">
This is interesting and may be important. You might be the only user of
Visual who routinely runs a program for "a day or so", which would
explain why no one else has reported a problem.<br>
<br>
Is it possible that you could winnow down to a much simpler test case
that still demonstrates the problem?<br>
<br>
As to the status of numpy, on the Windows download page at vpython.org
is the following information:<br>
<br>
<span class="Apple-style-span"
 style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Times New Roman'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; font-size: medium;">The
VPython installer installs the Visual 3D module, example programs, the
Visual documentation, and VIDLE, an improved version of the IDLE
program editor, into Lib/site-packages/visual in the Python folder. It
also installs if necessary the numpy module, which Visual requires. A
shortcut to VIDLE is placed on the desktop which references the VPython
example programs.<br>
<br>
Bruce Sherwood<br>
</span><br>
Beracah Yankama wrote:
<blockquote cite="mid:4BE...@mi..." type="cite">
  <pre wrap="">Hi all,
Having visited the site and the buglist, which appears to be old/not in 
use anymore, I figured that I would just email this list.  I'm concerned 
about a possible memory leak, which I've traced down to be either the 
way vpython keeps numpy ndarray position objects around or numpy failing 
to deallocate them properly.  I'm using windows, so I'm assuming that 
the vpython lib on windows is statically linked since the main page 
didn't tell me anything about downloading numpy.

I create and destroy hundreds of thousands of objects in the vpython 
window lifetime, and I notice that the memory slowly grows until the 
application crashes after a day or so.  I made a test script, that only 
creates objects in the window, then deletes them over and over, and I 
found the long-term memory use/growth to be related linearly to the .pos 
attribute.  For instance, a curve with 20 points leads to unreleased 
memory that grows 10x as fast as curves with only 2 points.  Similarly, 
if I assign the .pos attribute as a numpy ndarray directly, the leak 
grows twice as fast as if assign the individual xyz values.

I've upgraded my numpy without any change.  Also, in aug 2009, numpy 
users of v1.3.0 noticed a memory leak in the ndarray subclass:
<a class="moz-txt-link-freetext" href="http://www.mail-archive.com/num...@sc.../msg19776.html">http://www.mail-archive.com/num...@sc.../msg19776.html</a>

I included the test code here -- please let me know if I've just missed 
something totally obvious about the way the objects/positions should be 
deallocated.

Thanks!
Beracah

//------------------------------------------------------
import visual.crayola
import visual
import random
import thread
import sys

import time

win=800

L = 16		# should correspond to the radius of the smallest tree

width=1000
height=700
scene = visual.display(title="3D Relational Viz Engine", width=1000, 
height=700, range=2*L, forward=(0,-.2,-1))

scene.fullscreen = 0

scene.autocenter = 0
scene.autoscale = 0
scene.userzoom = 1


rootframe = visual.frame()


globjects = []
# this is the test;  loop infinitely creating objects
# drestroy them every X times

# pretty stuff.
def rotateit():
	global rootframe
	ir=0
	
	
	while 1:
		if (ir % 120 ) == 0:
			x = 1 if (random.random() &lt; .1) else 0
			y = 1 if (random.random() &lt; .1) else 0
			z = 1 if (random.random() &lt; .1) else 0
			
			z = 1 if ((x + y + z) == 0) else z
			# print (x,y,z)
			
			# chang direction randomly
			direction = -1.0 if (random.random() &lt; .1) else 1.0
			speed = 4.0 if (random.random() &lt; .1) else 1.0

		if rootframe:
			rootframe.rotate(angle=(speed*direction*visual.pi/2160.), 
axis=(x,y,z), origin=(0,0,0))
			# rootframe.rotate(angle=visual.pi/360., axis=(1,0,0), origin=(0,0,0))
			ir+=1
			
			#print ir
			# rotate by Z every hundred or so.
			if (ir % 5) == 0:
				rootframe.rotate(angle=(speed*direction*visual.pi/1080.), 
axis=(x,y,z), origin=(0,0,0))
		visual.rate(90)
		

rotatethread = thread.start_new_thread(rotateit, ())

totalobjects = 0


# for i in xrange(100):
while 1:
	# print len(globjects), totalobjects
	
	
	if 0: # len(globjects) % 2 == 0:
		globjects.append(
			visual.label(
				pos=(
					random.uniform(-10,10),
					random.uniform(-10,10),
					random.uniform(-10,10)),
				# text=str(random.uniform(0,100000000)) + 
str(random.uniform(0,100000000)) + str(random.uniform(0,100000000)),
				# memory is DEF a f(string length)
				text = 'a',		# now lets see if somehow the number of objects is not 
being freed...
				frame=rootframe,
				linecolor=(255,0,0),
				height=10,
				opacity=.125,
				border=0,
				box=0,
				color=(255,0,0))
				)
			
	else:
		globjects.append(
			visual.curve(
					pos=[
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
						(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10))

						],
					color=(0,0,255),
					frame=rootframe))																
	
	# time.sleep(1.0)
	
	if len(globjects) &gt;= 1000:
		totalobjects += len(globjects)
		print totalobjects
		
		for i in reversed(xrange(len(globjects))):
			globjects[i].visible = 0
			# globjects[i].remove(0)
			for p in xrange(len(globjects[i].pos)):
				# print p, type(globjects[i].pos[p])
				# print point
				""
			del globjects[i]
		
		
		del globjects
		globjects = []
		
	
	
	visual.rate(1000)		

------------------------------------------------------------------------------

_______________________________________________
Visualpython-users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Vis...@li...">Vis...@li...</a>
<a class="moz-txt-link-freetext" href="https://lists.sourceforge.net/lists/listinfo/visualpython-users">https://lists.sourceforge.net/lists/listinfo/visualpython-users</a>
  </pre>
</blockquote>
</body>
</html>

[Visualpython-users] possible memory leak?

[Beracah Y. <be...@MI...>]

Hi all,
Having visited the site and the buglist, which appears to be old/not in 
use anymore, I figured that I would just email this list.  I'm concerned 
about a possible memory leak, which I've traced down to be either the 
way vpython keeps numpy ndarray position objects around or numpy failing 
to deallocate them properly.  I'm using windows, so I'm assuming that 
the vpython lib on windows is statically linked since the main page 
didn't tell me anything about downloading numpy.

I create and destroy hundreds of thousands of objects in the vpython 
window lifetime, and I notice that the memory slowly grows until the 
application crashes after a day or so.  I made a test script, that only 
creates objects in the window, then deletes them over and over, and I 
found the long-term memory use/growth to be related linearly to the .pos 
attribute.  For instance, a curve with 20 points leads to unreleased 
memory that grows 10x as fast as curves with only 2 points.  Similarly, 
if I assign the .pos attribute as a numpy ndarray directly, the leak 
grows twice as fast as if assign the individual xyz values.

I've upgraded my numpy without any change.  Also, in aug 2009, numpy 
users of v1.3.0 noticed a memory leak in the ndarray subclass:
http://www.mail-archive.com/num...@sc.../msg19776.html

I included the test code here -- please let me know if I've just missed 
something totally obvious about the way the objects/positions should be 
deallocated.

Thanks!
Beracah

//------------------------------------------------------
import visual.crayola
import visual
import random
import thread
import sys

import time

win=800

L = 16		# should correspond to the radius of the smallest tree

width=1000
height=700
scene = visual.display(title="3D Relational Viz Engine", width=1000, 
height=700, range=2*L, forward=(0,-.2,-1))

scene.fullscreen = 0

scene.autocenter = 0
scene.autoscale = 0
scene.userzoom = 1


rootframe = visual.frame()


globjects = []
# this is the test;  loop infinitely creating objects
# drestroy them every X times

# pretty stuff.
def rotateit():
	global rootframe
	ir=0
	
	
	while 1:
		if (ir % 120 ) == 0:
			x = 1 if (random.random() < .1) else 0
			y = 1 if (random.random() < .1) else 0
			z = 1 if (random.random() < .1) else 0
			
			z = 1 if ((x + y + z) == 0) else z
			# print (x,y,z)
			
			# chang direction randomly
			direction = -1.0 if (random.random() < .1) else 1.0
			speed = 4.0 if (random.random() < .1) else 1.0

		if rootframe:
			rootframe.rotate(angle=(speed*direction*visual.pi/2160.), 
axis=(x,y,z), origin=(0,0,0))
			# rootframe.rotate(angle=visual.pi/360., axis=(1,0,0), origin=(0,0,0))
			ir+=1
			
			#print ir
			# rotate by Z every hundred or so.
			if (ir % 5) == 0:
				rootframe.rotate(angle=(speed*direction*visual.pi/1080.), 
axis=(x,y,z), origin=(0,0,0))
		visual.rate(90)
		

rotatethread = thread.start_new_thread(rotateit, ())

totalobjects = 0


# for i in xrange(100):
while 1:
	# print len(globjects), totalobjects
	
	
	if 0: # len(globjects) % 2 == 0:
		globjects.append(
			visual.label(
				pos=(
					random.uniform(-10,10),
					random.uniform(-10,10),
					random.uniform(-10,10)),
				# text=str(random.uniform(0,100000000)) + 
str(random.uniform(0,100000000)) + str(random.uniform(0,100000000)),
				# memory is DEF a f(string length)
				text = 'a',		# now lets see if somehow the number of objects is not 
being freed...
				frame=rootframe,
				linecolor=(255,0,0),
				height=10,
				opacity=.125,
				border=0,
				box=0,
				color=(255,0,0))
				)
			
	else:
		globjects.append(
			visual.curve(
					pos=[
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
					 
(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10)),
						(random.uniform(-10,10),random.uniform(-10,10),random.uniform(-10,10))

						],
					color=(0,0,255),
					frame=rootframe))																
	
	# time.sleep(1.0)
	
	if len(globjects) >= 1000:
		totalobjects += len(globjects)
		print totalobjects
		
		for i in reversed(xrange(len(globjects))):
			globjects[i].visible = 0
			# globjects[i].remove(0)
			for p in xrange(len(globjects[i].pos)):
				# print p, type(globjects[i].pos[p])
				# print point
				""
			del globjects[i]
		
		
		del globjects
		globjects = []
		
	
	
	visual.rate(1000)		

Re: [Visualpython-users] Experimental PPC build of VPython 5.32 Available....

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

Thanks, Steve!

Bruce Sherwood

On 5/3/2010 6:37 AM, Steve Spicklemire wrote:
> FYI... there is a new build of the PPC installer for 5.32 that has
> been reported to work on Mac OS X "Tiger" 10.4.
>
> If you tried the old PPC 5.32 installer and found it didn't work on
> 10.4 (it didn't) please give this one a try!
>
> http://www.spvi.net/VPython-PPC/Welcome.html
>
> thanks,
> -steve
>
> On Apr 15, 2010, at 3:14 PM, Steve Spicklemire wrote:
>
>    
>> Hi Folks,
>>
>> Well... with Bruce's hints I was able to build a PPC Mac version of
>> VPython 5.32. I only have one PPC machine running OS X 10.5.8. If
>> you're interested in testing I'd appreciate it! You can get the
>> build at:
>>
>> http://www.spvi.net/VPython-PPC/Welcome.html
>>
>> Let me know if you try this and have any trouble... or if you find
>> it works!
>>
>> thanks,
>> -steve
>>
>>      
>
> ------------------------------------------------------------------------------
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>    

Re: [Visualpython-users] Experimental PPC build of VPython 5.32 Available....

[Steve S. <st...@sp...>]

FYI... there is a new build of the PPC installer for 5.32 that has  
been reported to work on Mac OS X "Tiger" 10.4.

If you tried the old PPC 5.32 installer and found it didn't work on  
10.4 (it didn't) please give this one a try!

http://www.spvi.net/VPython-PPC/Welcome.html

thanks,
-steve

On Apr 15, 2010, at 3:14 PM, Steve Spicklemire wrote:

> Hi Folks,
>
> Well... with Bruce's hints I was able to build a PPC Mac version of  
> VPython 5.32. I only have one PPC machine running OS X 10.5.8. If  
> you're interested in testing I'd appreciate it! You can get the  
> build at:
>
> http://www.spvi.net/VPython-PPC/Welcome.html
>
> Let me know if you try this and have any trouble... or if you find  
> it works!
>
> thanks,
> -steve
>

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
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> _______________________________________________
>>> Visualpython-users mailing list
>>> Vis...@li...
>>> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>>>
>>>        
>    

[Visualpython-users] is profiling possible?

[Thomas S. <to...@fe...>]

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

Re: [Visualpython-users] Kubuntu Lucid Visual Python works

[Guy K. K. <g....@ma...>]

On Sat, 24 Apr 2010 04:32:24 Bruce Sherwood wrote:
> After importing visual, "print version". I guess I should look into why 
> visual.__version__ has the strange value of 1.3.0.

I think that's a result of the wild card imports from NumPy. On my system it's 
the same, and NumPy is installed in version 1.3.0. So doing this

In [1]: import numpy

In [2]: numpy.__version__ 
Out[2]: '1.3.0'

Gives me exactly the same thing.

Another reason to resolve the wild card imports, I'd say. All kinds of 
strangenesses happening due to that.

Guy

-- 
Guy K. Kloss
Institute of Information and Mathematical Sciences
Te Kura Pūtaiao o Mōhiohio me Pāngarau
Room 2.63, Quad Block A Building
Massey University, Auckland, Albany
Private Bag 102 904, North Shore Mail Centre
voice: +64 9 414-0800 ext. 9266   fax: +64 9 441-8181
eMail: G....@ma...  http://iims.massey.ac.nz

Re: [Visualpython-users] Kubuntu Lucid Visual Python works

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

After importing visual, "print version". I guess I should look into why 
visual.__version__ has the strange value of 1.3.0.

See the "Recent developments" section of vpython.org to see the history 
of versions of Visual.

Bruce Sherwood

On 4/23/2010 12:17 PM, Gary Pajer wrote:
> On Thu, Apr 22, 2010 at 11:30 PM, Bruce Sherwood 
> <Bru...@nc... <mailto:Bru...@nc...>> wrote:
>
>     Is this the python-visual package? What Visual version is it?
>
>     Bruce
>
>
> Yes, the Ubuntu package python-visual.  The package reports to be 
> version 5.12-1.   Is there someway to tell programatically?   
> visual.__version__ returns 1.3.0
>
> If it its 5.12, do you have some idea of what's been added since then?
>
> Just in time, by the way.  This morning our campus network was down so 
> I had to bring my laptop to class.  This wouldn't have been possible 
> yesterday morning.
>
>
>
>
>
>
>
>
>
>
>
>     On 4/22/2010 9:35 PM, Gary Pajer wrote:
>
>         Kubuntu 10.04 Release Candidate came out today.
>
>         Finally, Vpython is working for me as it should !!!
>
>         -gary
>
>         On Sun, Apr 11, 2010 at 11:49 PM, Gary Pajer
>         <gar...@gm... <mailto:gar...@gm...>
>         <mailto:gar...@gm... <mailto:gar...@gm...>>>
>         wrote:
>
>            It does, and may be.  But I did run it in a VirtualBox
>         without 3D
>            hardware acceleration, so if I understand how that's
>         supposed to
>            work, VirtualBox does software emulation.      I am far from
>            certain about that.  I also ran it "native" from LiveCD,
>         and got
>            almost but not quite exactly the same error.  Also, I've
>         seen this
>            error pop up in other bug reports ... I'm trying to sort
>         that out,
>            and I'll file yet another bug report if I can make sense out of
>            anything.
>
>            But the Linux drivers for my video hardware (Radeon
>         Mobility 7500)
>            has had problems recently.  I was able to stir the pot on
>         that one
>            (in addition to rattling cages about boost) and got one of them
>            fixed.  A bug in the driver exposed a bug in the *kernel*.
>
>            I've had lots of problems with bugs in Kubuntu 9.10.   In
>         addition
>            to the boost bug, the video driver bug, and the kernel bug,
>         I've
>            been bitten by more than one Amarok bug, and what seems to be a
>            libmtp bug, and a video (as in YouTube) bug.  I think they shot
>            themselves in the foot with 9.10.  I hope 10.04 is better.
>          Since
>            my WinXP seems to be permanently broken, I've switched my
>         laptop
>            to Linux full time.
>
>
>            On Sun, Apr 11, 2010 at 6:34 PM, Bruce Sherwood
>         <Bru...@nc... <mailto:Bru...@nc...>
>         <mailto:Bru...@nc...
>         <mailto:Bru...@nc...>>> wrote:
>
>                This sounds suspiciously like a problem with your
>         graphics driver.
>
>                Bruce Sherwood
>
>                On 4/11/2010 6:05 PM, Gary Pajer wrote:
>
>         > I'm not so fortunate.  I've tried 10.04 beta2 and the 4/10 daily
>         > build.  The result is below.  At least it didn't segfault.
>                 Any idea
>         > what this means?
>         >
>         >
>         >
>         >>>> sphere()
>         >>>>
>         > (<unknown>:3064): GdkGLExt-WARNING **: Cannot open \x98\xad.
>         > L.so
>         >
>         > (<unknown>:3064): GdkGLExt-WARNING **: Cannot open \x98\xad.
>         > L.so
>         >
>         > glibmm-ERROR **:
>         > unhandled exception (type std::exception) in signal handler:
>         > what: Unable to get extension function:
>                glCreateProgramObjectARB even
>         > though the extension is advertised.
>         >
>         > aborting...
>         > Aborted (core dumped)
>         >
>         >
>
>              
>          ------------------------------------------------------------------------------
>                Download Intel&#174; Parallel Studio Eval
>                Try the new software tools for yourself. Speed
>         compiling, find
>                bugs
>                proactively, and fine-tune applications for parallel
>         performance.
>                See why Intel Parallel Studio got high marks during beta.
>         http://p.sf.net/sfu/intel-sw-dev
>                _______________________________________________
>                Visualpython-users mailing list
>         Vis...@li...
>         <mailto:Vis...@li...>
>         <mailto:Vis...@li...
>         <mailto:Vis...@li...>>
>
>         https://lists.sourceforge.net/lists/listinfo/visualpython-users
>
>
>
>
>
> ------------------------------------------------------------------------------
>    
>
>
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users
>    

Re: [Visualpython-users] Kubuntu Lucid Visual Python works

[Gary P. <gar...@gm...>]

On Thu, Apr 22, 2010 at 11:30 PM, Bruce Sherwood <Bru...@nc...>wrote:

> Is this the python-visual package? What Visual version is it?
>
> Bruce


Yes, the Ubuntu package python-visual.  The package reports to be version
5.12-1.   Is there someway to tell programatically?   visual.__version__
returns 1.3.0

If it its 5.12, do you have some idea of what's been added since then?

Just in time, by the way.  This morning our campus network was down so I had
to bring my laptop to class.  This wouldn't have been possible yesterday
morning.











>
>
> On 4/22/2010 9:35 PM, Gary Pajer wrote:
>
>> Kubuntu 10.04 Release Candidate came out today.
>>
>> Finally, Vpython is working for me as it should !!!
>>
>> -gary
>>
>> On Sun, Apr 11, 2010 at 11:49 PM, Gary Pajer <gar...@gm...<mailto:
>> gar...@gm...>> wrote:
>>
>>    It does, and may be.  But I did run it in a VirtualBox without 3D
>>    hardware acceleration, so if I understand how that's supposed to
>>    work, VirtualBox does software emulation.      I am far from
>>    certain about that.  I also ran it "native" from LiveCD, and got
>>    almost but not quite exactly the same error.  Also, I've seen this
>>    error pop up in other bug reports ... I'm trying to sort that out,
>>    and I'll file yet another bug report if I can make sense out of
>>    anything.
>>
>>    But the Linux drivers for my video hardware (Radeon Mobility 7500)
>>    has had problems recently.  I was able to stir the pot on that one
>>    (in addition to rattling cages about boost) and got one of them
>>    fixed.  A bug in the driver exposed a bug in the *kernel*.
>>
>>    I've had lots of problems with bugs in Kubuntu 9.10.   In addition
>>    to the boost bug, the video driver bug, and the kernel bug, I've
>>    been bitten by more than one Amarok bug, and what seems to be a
>>    libmtp bug, and a video (as in YouTube) bug.  I think they shot
>>    themselves in the foot with 9.10.  I hope 10.04 is better.  Since
>>    my WinXP seems to be permanently broken, I've switched my laptop
>>    to Linux full time.
>>
>>
>>    On Sun, Apr 11, 2010 at 6:34 PM, Bruce Sherwood
>>    <Bru...@nc... <mailto:Bru...@nc...>> wrote:
>>
>>        This sounds suspiciously like a problem with your graphics driver.
>>
>>        Bruce Sherwood
>>
>>        On 4/11/2010 6:05 PM, Gary Pajer wrote:
>>
>>        > I'm not so fortunate.  I've tried 10.04 beta2 and the 4/10 daily
>>        > build.  The result is below.  At least it didn't segfault.
>>         Any idea
>>        > what this means?
>>        >
>>        >
>>        >
>>        >>>> sphere()
>>        >>>>
>>        > (<unknown>:3064): GdkGLExt-WARNING **: Cannot open \x98\xad.
>>        > L.so
>>        >
>>        > (<unknown>:3064): GdkGLExt-WARNING **: Cannot open \x98\xad.
>>        > L.so
>>        >
>>        > glibmm-ERROR **:
>>        > unhandled exception (type std::exception) in signal handler:
>>        > what: Unable to get extension function:
>>        glCreateProgramObjectARB even
>>        > though the extension is advertised.
>>        >
>>        > aborting...
>>        > Aborted (core dumped)
>>        >
>>        >
>>
>>
>>  ------------------------------------------------------------------------------
>>        Download Intel&#174; Parallel Studio Eval
>>        Try the new software tools for yourself. Speed compiling, find
>>        bugs
>>        proactively, and fine-tune applications for parallel performance.
>>        See why Intel Parallel Studio got high marks during beta.
>>        http://p.sf.net/sfu/intel-sw-dev
>>        _______________________________________________
>>        Visualpython-users mailing list
>>        Vis...@li...
>>        <mailto:Vis...@li...>
>>
>>        https://lists.sourceforge.net/lists/listinfo/visualpython-users
>>
>>
>>
>>

Re: [Visualpython-users] Experimental PPC build of VPython 5.32 Available....

[Lenore H. <lh...@si...>]

Steve,

Thank you very much for accomplishing that.  I just downloaded and  
installed both python 2.6.4 and your vpython 5.32 installer and ran  
the half-dozen or so programs I have written.  No problems arose.

Lenore

G4, 10.5.8


On Apr 15, 2010, at 2:14 PM, Steve Spicklemire wrote:

> Hi Folks,
>
> Well... with Bruce's hints I was able to build a PPC Mac version of
> VPython 5.32. I only have one PPC machine running OS X 10.5.8. If
> you're interested in testing I'd appreciate it! You can get the build
> at:
>
> http://www.spvi.net/VPython-PPC/Welcome.html
>
> Let me know if you try this and have any trouble... or if you find it
> works!
>
> thanks,
> -steve
>
>
>
> ------------------------------------------------------------------------------
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> Visualpython-users mailing list
> Vis...@li...
> https://lists.sourceforge.net/lists/listinfo/visualpython-users