sage-support Google Group

Re: [sage-support] Out of memory allocating triangulation (implicit_plot3d)

2009-11-15T03:29:34Z

Yes, see
[link]
which means malloc or realloc returned NULL. Other than running out of
memory, I'm not sure of anything that would make (re|m)alloc return
NULL. (FYI, sage_malloc is just malloc, see [link]

Out of memory allocating triangulation (implicit_plot3d)

2009-11-15T03:00:58Z

Can anyone tell me if this is really an out of memory error?

MemoryError: Out of memory allocating triangulation for <type
'sage.plot.plot3d.implicit_sur face.ImplicitSurface'>

This happens when I'm calling implicit_plot3d(). I aplogize for not
posting more context, but it will take some work to come up with a

Re: [sage-support] Re: arithmetic in python

2009-11-14T21:23:48Z

On Sat, Nov 14, 2009 at 12:29 PM, Jason Grout
I've added this to the FAQ:
[link]
William

Re: arithmetic in python

2009-11-14T20:29:21Z

pong wrote:

Sage "preparses" the input and transforms it like this:

sage: preparse('0.6**2')
"RealNumber('0.6')**Integer(2) "

So what is *actually* run is:

RealNumber('0.6')**Integer(2)

These are Sage-specific things, so you wouldn't be able to just type the
above into python and expect it to work without importing and using Sage.

Re: arithmetic in python

2009-11-14T20:22:51Z

Thanks for the suggestion. I understand it now.

Just curious, so what exactly does SAGE do when I type 0.6**2 then?
I tried a quick search with SAGE tutorial this time, but didn't seem
to find what I'm looking for.

Thanks in advance

Re: Problem with plot3d in VirtualBox

2009-11-14T18:44:13Z

William, There is a sage-notebook icon. It brings up sea monkey
browser that I could not hook up to sage either using local host or
the ip address. Mike

Re: [sage-support] Re: Problem with plot3d in VirtualBox

2009-11-14T18:33:42Z

On Sat, Nov 14, 2009 at 10:32 AM, Michael Madison

What happens if you try running firefox in VirtualBox? I'm just
curious. There should be a Firefox icon in there at the top, I think.

--
William Stein
Associate Professor of Mathematics
University of Washington
[link]

Re: Problem with plot3d in VirtualBox

2009-11-14T18:32:36Z

William, The FireFox is running in Windows. It is Fire fox 3.5.5.
Mike

Re: [sage-support] Problem with plot3d in VirtualBox

2009-11-14T18:22:20Z

On Sat, Nov 14, 2009 at 3:21 AM, Michael Madison

I you running Firefox under *Windows* or directly inside the virtual machine?

William

--
William Stein
Associate Professor of Mathematics
University of Washington
[link]

Re: [sage-support] arithmetic in python

2009-11-14T18:06:30Z

I highly recommend that you read
[link]
to understand why Python does what it does.
William

arithmetic in python

2009-11-14T17:17:08Z

I apologize in advance that this is essentially a question about
python instead of sage.

When I type 0.6**2 in python, it returns
0.35999999999999999

When I do the same in SAGE
0.360000000000000

It gives the correct answer. Why so? And can I make python gives the
"correct" answer as well?

Re: [sage-support] Re: Server Wars!

2009-11-14T17:16:25Z

Well, currently, the ftp server has only root on it so I can upload
materials for my lovelies. Then they download via anonymous ftp. I
used slackware and proftpd to set up that server eons ago.

HTH,
A. Jorge Garcia
[link]

Teacher & Professor
Applied Mathematics, Physics & Computer Science

Re: [sage-support] Re: Server Wars!

2009-11-14T16:03:35Z

Yes, but I personally would drop the ftp and only use ssh/sftp and
Sage. In any case, those services operate through different ports
so you can use the same physical server for all 3.

Re: Server Wars!

2009-11-14T15:52:15Z

BTW, I currently have 3 Linux servers at school. One is an ftp server
to share files with my students. Another is an sftp server where my
students can login to save their work. And another is down right now
and was an apache server. I should be getting that last one repaired
soon and am thinking of making it a SAGE server.

Server Wars!

2009-11-14T14:57:53Z

Ever have one of those days where all your servers went down???
Take a look at the latest updates on my blog for more info!
Just surf on over to [link] and click on the link
near the top of my home page.
Enjoy,
A. Jorge Garcia
[link]
Teacher & Professor
Applied Mathematics, Physics & Computer Science