[sage-support] Re: Why this numerical integral bombs?
On Apr 26, 1:36 am, mabshoff michael.absh...@mathematik.uni- dortmund.de wrote: I do not see how that rules out clisp 2.47 - or am I just not getting what you are driving at :) I meant if I can recreate the problem from 3.4 source as well as 3.4.1 source then doesn't that mean I can recreate the problem in both version of clisp? Hence clisp is innocent? cs --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Why this numerical integral bombs?
On Apr 26, 11:05 pm, Chris Seberino cseber...@gmail.com wrote: On Apr 26, 1:36 am, mabshoff michael.absh...@mathematik.uni- dortmund.de wrote: I do not see how that rules out clisp 2.47 - or am I just not getting what you are driving at :) I meant if I can recreate the problem from 3.4 source as well as 3.4.1 source then doesn't that mean I can recreate the problem in both version of clisp? Hence clisp is innocent? No, my guess is that either clisp release triggers the same problem. Any recent clisp source release is incredibly easy to miscompile and we are building it with -O0 with any compiler to maximize our chances to make it work. But no clisp release since 2.41 has ever even build on the build farm or SkyNet, much less various OSX releases or Solaris (at least not with anything beyond gcc 4.x). That is the reason we are switching and numerous other projects have prevented me from doing the clisp - ecl switch, but finally its time has come since that is the only way to support Solaris properly. cs Cheers, Michael --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: bug is subs_expr() ?
On Apr 26, 9:10 pm, Alex Raichev tortoise.s...@gmail.com wrote:
Hi all:
Hi Alex,
It looks like there's a tiny bug in subs_expr(): it hangs when given
the empty dictionary.
Alex
--
| Sage Version 3.4, Release Date: 2009-03-11 |
| Type notebook() for the GUI, and license() for information. |
--
sage: x.subs_expr({x:1})
1
sage: x.subs_expr({})
...No response.
Yeah, this is a bug in the Sage - Maxima interface. The new
symbolics code might fix this, but I still put this in trac as #5909.
Cheers,
Michael
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[sage-support] Re: group cohomology for two particular groups
For sage, I do not know, but why not try GAP? It has a package HAP for doing homology computations and it might solve your problem. On Wed, Apr 8, 2009 at 8:16 PM, Ursula Whitcher urs...@math.washington.eduwrote: I'd like to know H^3(G,Z) for two particular finite groups, namely L_2 (7), also known as the Chevalley group PSL(2,F_7), and M_20, a subgroup of the Mathieu group M_24 which is isomorphic to a semidirect product of (Z/2Z)^4 with the alternating group A_5. Is Sage capable of these computations? If so, how do I express these groups (or how should I start trying to express them)? If not, does anyone have a suggestion for a place to look this up, or another computation tool I should use? Thanks! Ursula --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Why this numerical integral bombs?
mabshoff wrote: On Apr 25, 12:23 am, Paul Zimmermann paul.zimmerm...@loria.fr wrote: Michael, Hi Paul, And Sage 3.4: | Sage Version 3.4, Release Date: 2009-03-11 | | Type notebook() for the GUI, and license() for information.| -- sage: numerical_integral(sin(pi*cos(x/2)),0,2)[0] 0.85397903781471396 So I cannot reproduce this. What platform are you on and are you using a binary, build from source, etc? the example that failed has 'exp' instead of 'cos'. However with Sage 3.4 it works for me: -- | Sage Version 3.4, Release Date: 2009-03-11 | | Type notebook() for the GUI, and license() for information.| -- sage: numerical_integral(sin(pi*exp(x/2)),0,2)[0] -0.43734547482524966 Paul Zimmermann I ran this on 3.4, 3.4.1 and a couple other rc releases in between: sage: for i in (0..200): : numerical_integral(sin(pi*exp(x/2)),0,2)[0] : and I could not get a failure. Note that the most likely culprit here is clisp IMHO. Just today I found out that clisp 2.47 doesn't build on the latest Mandriva release in 32 and 64 bit flavors. Oh well ... We should have an Ubuntu 9.04 test image in the not too distant future, so maybe we will hit it there. I just upgraded to Jaunty over the weekend, and then compiled 3.4.1 from scratch. Both expressions work for me: $ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=9.04 DISTRIB_CODENAME=jaunty DISTRIB_DESCRIPTION=Ubuntu 9.04 $ sage -- | Sage Version 3.4.1, Release Date: 2009-04-21 | | Type notebook() for the GUI, and license() for information.| -- sage: numerical_integral(sin(pi*cos(x/2)),0,2)[0] 0.85397903781471396 sage: numerical_integral(sin(pi*exp(x/2)),0,2)[0] -0.4373454748252496 sage: numerical_integral(sin(pi*exp(x/2)),0,2)[0] -0.4373454748252496 sage: numerical_integral(sin(pi*exp(x/2)),0,2)[0] -0.4373454748252496 sage: -Jason --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: sage tutorial on amazon
Finally this is on the amazon site: http://www.amazon.com/Sage-tutorial-version-3-4-Group/dp/1442141948/ref=sr_1_2?ie=UTF8s=booksqid=1240843883sr=8-2 Hope this link comes out okay via email. On Thu, Apr 2, 2009 at 10:37 AM, David Joyner wdjoy...@gmail.com wrote: Hi: The Sage tutorial on amazon is a bit out of date. Amazon requires the online publisher createspace, which uses an extremely finiky automated web-based program to process the manuscript. Any overfull box, if memory serves, will create an immediate rejection. There is an overfull box on page 33. I have in the past just fiddled with the latex file and remove any overfull boxes by hand. If no one objects to this twieeking, or volunteers to update the tutorial themselves, I'll probably get started on that this weekend. Also, I'll try to remember to make detailed notes and post them on the wiki for future reference. - David Joyner --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: sage tutorial on amazon
On Mon, Apr 27, 2009 at 8:04 AM, David Joyner wdjoy...@gmail.com wrote: Finally this is on the amazon site: http://www.amazon.com/Sage-tutorial-version-3-4-Group/dp/1442141948/ref=sr_1_2?ie=UTF8s=booksqid=1240843883sr=8-2 Hope this link comes out okay via email. It did. Can you sign up and make it so users can look inside and search inside the book? Also, can you allow the book to be sold on kindle devices? William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] problem with server_pool.
I am trying to use Sage (3.4) with a server pool *and* ldap identification.
- As user sage I run the notebook with the following parameters:
notebook(port=8001,secure=True,address='',server_pool=['sa...@localhost'],open_viewer=False,accounts=True)
sage1 is an other Unix user, and I can ssh from sage user to sage1
without password.
- Suppose that this is the first time I log in sage; I give my login
and password, look for them in the ldap directory and, if everything is
ok, I proceed exactly as for a public server, that is to say that Sage
creates a new user (a new Sage user).
I can verify that Sage is running as sage1.
But the new user is created in the .sage/sage-notebook/worksheets of the
*sage* user (not the *sage1*).
I can connect to the server, but then, and for me it is not surprising,
I have no rights and can do nothing:
Example:
2+1
(evaluate)
Traceback (click to the left for traceback)
...
IOError: [Errno 13] Permission denied:
'/home/sage/.sage/sage_notebook/worksheets/Thierry.Dumont/2/code/1.py'
---
On the public sage-server (your server), it seems that sage is running
as worksheet (that is what says: system('whoami')), but the home
directories belong to sage. So there is something I do not understand.
An other (small) problem: I had to unsubscribe from sage-support list
for some time. I subscribed again (by mail), but I do not receive
answers to my mails, as before unsubscribing. But this not important, I
can look at the messages on the web.
Yours
t.d.
-
French universities are on a permanent strike!
Have a look at the International Call:
http://math.univ-lyon1.fr/appel
-
begin:vcard
fn:Thierry Dumont
n:Dumont;Thierry
org;quoted-printable:CNRS - Universit=C3=A9 Lyon 1. / Villeurbanne France.;Institut Camille Jordan
adr:;;43 Bd du 11 Novembre;Villeurbanne Cedex;F;69621;France
email;internet:tdum...@math.univ-lyon1.fr
title;quoted-printable:Ing=C3=A9nieur de Recherche/Research Ingineer
tel;work:(33) 4 72 44 85 23
x-mozilla-html:FALSE
url:http://math.univ-lyon1.fr/~tdumont
version:2.1
end:vcard
smime.p7s
Description: S/MIME Cryptographic Signature
[sage-support] Re: sage error 6520
Hi, I just put Sage3.4.1 on and I am getting line 198: 3626 Illegral instruction sage-ip0ython #@ -i.. Do you think I should get the source and recompile it? Mikie On Apr 25, 1:01 am, mabshoff michael.absh...@mathematik.uni- dortmund.de wrote: On Apr 24, 2:55 pm, mabshoff michael.absh...@mathematik.uni- dortmund.de wrote: Hi, Sage 3.4.1 which binaries I should post in the next couple hours has been build to use only SSE2, so that one should work for you. Who would have thought, but it took longer than planned. Anyway, 32 as well as 64 bit SSE2 only Centos binaries are in http://www.sagemath.org/bin/linux/ Cheers, Michael Cheers, Michael --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: sage tutorial on amazon
On Mon, Apr 27, 2009 at 11:12 AM, William Stein wst...@gmail.com wrote: On Mon, Apr 27, 2009 at 8:04 AM, David Joyner wdjoy...@gmail.com wrote: Finally this is on the amazon site: http://www.amazon.com/Sage-tutorial-version-3-4-Group/dp/1442141948/ref=sr_1_2?ie=UTF8s=booksqid=1240843883sr=8-2 Hope this link comes out okay via email. It did. Can you sign up and make it so users can look inside and search inside the book? I think I just did that. Also, can you allow the book to be sold on kindle devices? This seems to be more complicated. Createspace seems happy to write a check to the Sage Foundation. The dtp.amazon.com site (which handles the kindle setup) wants a checking account for an electronic transfer. The UW Sage Foundation site doesn't have that info. (Maybe that info can be filled out during SD15?) Also, you can request that amazon offer a kindle version on the book webpage. William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: paths in graphs
On Mon, Apr 27, 2009 at 7:45 AM, Robert Miller r...@rlmiller.org wrote:
On Mon, Apr 27, 2009 at 6:47 AM, William Stein wst...@gmail.com wrote:
Hi Robert,
Did you guys every write any code to plot *paths* in graphs?
No, but you can color the edges of the path differently.
That is pretty bad, IMHO. E.g., try this:
g = graphs.CompleteGraph(5)
g.plot(edge_colors={'red':[(0,1)]})
If you try to color any edges, then it *deletes* all other edges that
aren't colored.
William
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inline: Picture 2.png
[sage-support] Re: paths in graphs
William Stein wrote:
On Mon, Apr 27, 2009 at 7:45 AM, Robert Miller r...@rlmiller.org wrote:
On Mon, Apr 27, 2009 at 6:47 AM, William Stein wst...@gmail.com wrote:
Hi Robert,
Did you guys every write any code to plot *paths* in graphs?
No, but you can color the edges of the path differently.
That is pretty bad, IMHO. E.g., try this:
g = graphs.CompleteGraph(5)
g.plot(edge_colors={'red':[(0,1)]})
If you try to color any edges, then it *deletes* all other edges that
aren't colored.
Well, deletes is a pretty strong word. More accurately, it doesn't
show any edges for which you didn't specify a color.
I've found this to be a slight annoyance when I wanted to create pretty
edge-colored graphs, as I have to specifically color my other edges black.
Jason
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[sage-support] Re: paths in graphs
On Mon, Apr 27, 2009 at 10:02 AM, Jason Grout
jason-s...@creativetrax.com wrote:
William Stein wrote:
On Mon, Apr 27, 2009 at 7:45 AM, Robert Miller r...@rlmiller.org wrote:
On Mon, Apr 27, 2009 at 6:47 AM, William Stein wst...@gmail.com wrote:
Hi Robert,
Did you guys every write any code to plot *paths* in graphs?
No, but you can color the edges of the path differently.
That is pretty bad, IMHO. E.g., try this:
g = graphs.CompleteGraph(5)
g.plot(edge_colors={'red':[(0,1)]})
If you try to color any edges, then it *deletes* all other edges that
aren't colored.
Well, deletes is a pretty strong word. More accurately, it doesn't
show any edges for which you didn't specify a color.
I've found this to be a slight annoyance when I wanted to create pretty
edge-colored graphs, as I have to specifically color my other edges black.
So do you also consider it a bug? I don't want to report bugs about
graph theory until getting some graph theorists to agree, since I'm
not a graph theorist.
William
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[sage-support] Re: Why this numerical integral bombs?
On Apr 27, 2:33 am, Jason Grout jason-s...@creativetrax.com wrote: I just upgraded to Jaunty over the weekend, and then compiled 3.4.1 from scratch. Both expressions work for me: Hmm. Does Sage leave a log build regarding the compilation? Perhaps my build had some errors yours doesn't have I should look for? cs --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Failure running sage-vmware-sse2-3.4.1
On starting sage-vmware-sse2-3.4.1 I get the text menus in vmware. However, on starting either Sage or Notebook it starts and then returns me to the text menus again. When running Sage from the text menu I don't get any error messages before it fails. My vmware sage worked fine for sage 3.2.3. I am using: sage-vmware-sse2-3.4.1 binary Intel Celeron M 1.5 GHz, 1 GB Ram Microsoft Windows XP Professional 5.1.2600, Service Pack 3 VMWARE 2.5.1 build-126130 Previously I could not get sate 3.4 to work on my windows machine. Thanks Mike Madison --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: DSage on Amazon EC2
As Sage continues to replace commercial and/or hand-rolled distributed numerical applications, this question becomes more and more important. I have neither EC2-specific nor general cloud-oriented comments---my use of Sage on a cluster was limited to very dumb file-based data- sharing. I'm hoping someone can describe a network-based task allocation method/code soon. I would greatly appreciate hearing about what you find with EC2. 20 cents per hour per dual-core 1.7 GB RAM node has applicability for our group's applications. On Apr 25, 2:26 pm, Andrzej Giniewicz ggi...@gmail.com wrote: Hi, I just wonder - does anyone have experience on running DSage on Amazon EC2 (on preferably more than one instance) or similar Cloud-Computing service? I'm preparing to try out the platform but because of it's non- zero cost I'd prefer not go in blind, would be very happy if someone who did it already could share some or any informations about how it runs there, with what optimizations, etc regards, Andrzej. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Failure running sage-vmware-sse2-3.4.1
I typed needed to type: Login Sage su sage and I got: Authentication failure Sorry The above resposes were to login and passward. By the way I also check the MD5 and it was correct. Thanks Mike On Apr 27, 10:27 am, William Stein wst...@gmail.com wrote: On Mon, Apr 27, 2009 at 10:25 AM, madison.mich...@gmail.com wrote: On starting sage-vmware-sse2-3.4.1 I get the text menus in vmware. However, on starting either Sage or Notebook it starts and then returns me to the text menus again. When running Sage from the text menu I don't get any error messages before it fails. My vmware sage worked fine for sage 3.2.3. I am using: sage-vmware-sse2-3.4.1 binary Intel Celeron M 1.5 GHz, 1 GB Ram Microsoft Windows XP Professional 5.1.2600, Service Pack 3 VMWARE 2.5.1 build-126130 Previously I could not get sate 3.4 to work on my windows machine. What happens when you type: login: admin $ su - sage ? --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Failure running sage-vmware-sse2-3.4.1
Sorry I forgot to type sudo I got: /usr/local/sage/local/bin/sage-sage: line 198: 3586 Illegal instruction sage-ipython $@ -i Mike Madison On Apr 27, 10:27 am, William Stein wst...@gmail.com wrote: On Mon, Apr 27, 2009 at 10:25 AM, madison.mich...@gmail.com wrote: On starting sage-vmware-sse2-3.4.1 I get the text menus in vmware. However, on starting either Sage or Notebook it starts and then returns me to the text menus again. When running Sage from the text menu I don't get any error messages before it fails. My vmware sage worked fine for sage 3.2.3. I am using: sage-vmware-sse2-3.4.1 binary Intel Celeron M 1.5 GHz, 1 GB Ram Microsoft Windows XP Professional 5.1.2600, Service Pack 3 VMWARE 2.5.1 build-126130 Previously I could not get sate 3.4 to work on my windows machine. What happens when you type: login: admin $ su - sage ? --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Failure running sage-vmware-sse2-3.4.1
On Mon, Apr 27, 2009 at 10:56 AM, madison.mich...@gmail.com wrote: Sorry I forgot to type sudo I got: /usr/local/sage/local/bin/sage-sage: line 198: 3586 Illegal instruction sage-ipython $@ -i This means you can't run the Sage vmware image on your computer, i.e., it is was built for a processor that is newer than yours. What does the output of cat /proc/cpuinfo say? William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: snapshot saving
Just as a postscript, I was really glad to have the autosave a few minute ago, where I nearly deleted an entire lecture's worth of notes and computations which I hadn't saved, by accidentally brushing against a browser shortcut to a favorites page on the wrong window. (This could happen with reload or other shortcuts, too, I suspect.) When I used the browser back button, I had literally nothing, but the autosave had captured my previous revision! - kcrisman --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: snapshot saving
On Mon, Apr 27, 2009 at 11:29 AM, kcrisman kcris...@gmail.com wrote: Just as a postscript, I was really glad to have the autosave a few minute ago, where I nearly deleted an entire lecture's worth of notes and computations which I hadn't saved, by accidentally brushing against a browser shortcut to a favorites page on the wrong window. (This could happen with reload or other shortcuts, too, I suspect.) When I used the browser back button, I had literally nothing, but the autosave had captured my previous revision! You could have just pressed reload and you would have had your worksheet back entirely. It was still sitting there on the server in RAM. Never use the back button with the sage notebook, unless you immediately press refresh. william --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Failure running sage-vmware-sse2-3.4.1
processor : 0 vendor_id : GenuineIntel cpu family : 6 model: 13 model name : Intel(R) Celeron(R) M processor 1.50GHz stepping: 8 cpu MHz : 1476.382 cache size: 1024 KB fdiv_bug: no hlt_bug : no f00f_bug: no coma_bug : no fpu: yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss nx up bogomips : 3007.50 Thanks Mike Madison On Apr 27, 11:20 am, William Stein wst...@gmail.com wrote: On Mon, Apr 27, 2009 at 10:56 AM, madison.mich...@gmail.com wrote: Sorry I forgot to type sudo I got: /usr/local/sage/local/bin/sage-sage: line 198: 3586 Illegal instruction sage-ipython $@ -i This means you can't run the Sage vmware image on your computer, i.e., it is was built for a processor that is newer than yours. What does the output of cat /proc/cpuinfo say? William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Why this numerical integral bombs?
Chris Seberino wrote: On Apr 27, 2:33 am, Jason Grout jason-s...@creativetrax.com wrote: I just upgraded to Jaunty over the weekend, and then compiled 3.4.1 from scratch. Both expressions work for me: Hmm. Does Sage leave a log build regarding the compilation? Perhaps my build had some errors yours doesn't have I should look for? Yes, in install.log in your root sage directory, if I recall correctly. Do you see any errors in there (it's a *huge* text file, though). Jason --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Accessing a Sage 'instance' over the web; URL=???
I have successfully installed the latest sage on a Fedora Core 9 machine (name of machine: strings358). It seems to work fine. One of my users wishes to access this remotely from his Mac OS laptop. When he runs sage on his laptop, it tells him to open his browser to http://localhost:8000. What do I tell him? How can he access the sage instance on strings358 via his browser over the web? And is there *any* documentation re installation/configuration of Sage? Thanks, -Richard Vaughn --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: snapshot saving
William Stein wrote: On Mon, Apr 27, 2009 at 11:29 AM, kcrisman kcris...@gmail.com wrote: Just as a postscript, I was really glad to have the autosave a few minute ago, where I nearly deleted an entire lecture's worth of notes and computations which I hadn't saved, by accidentally brushing against a browser shortcut to a favorites page on the wrong window. (This could happen with reload or other shortcuts, too, I suspect.) When I used the browser back button, I had literally nothing, but the autosave had captured my previous revision! You could have just pressed reload and you would have had your worksheet back entirely. It was still sitting there on the server in RAM. Never use the back button with the sage notebook, unless you immediately press refresh. Tom or some other javascript ninja: Isn't there some sort of javascript that disables the back button? That's a common problem in web applications, and I'd be very surprised if it isn't a solved problem already. Jason --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: snapshot saving
You could have just pressed reload and you would have had your worksheet back entirely. It was still sitting there on the server in RAM. Never use the back button with the sage notebook, unless you immediately press refresh. william ok, that seems reasonable! But of course accidents do happen. - kcrisman --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: snapshot saving
On Mon, Apr 27, 2009 at 11:45 AM, Jason Grout jason-s...@creativetrax.com wrote: William Stein wrote: On Mon, Apr 27, 2009 at 11:29 AM, kcrisman kcris...@gmail.com wrote: Just as a postscript, I was really glad to have the autosave a few minute ago, where I nearly deleted an entire lecture's worth of notes and computations which I hadn't saved, by accidentally brushing against a browser shortcut to a favorites page on the wrong window. (This could happen with reload or other shortcuts, too, I suspect.) When I used the browser back button, I had literally nothing, but the autosave had captured my previous revision! You could have just pressed reload and you would have had your worksheet back entirely. It was still sitting there on the server in RAM. Never use the back button with the sage notebook, unless you immediately press refresh. Tom or some other javascript ninja: Isn't there some sort of javascript that disables the back button? That's a common problem in web applications, and I'd be very surprised if it isn't a solved problem already. Jason Not, there is no javascript to do that. Also, disabling the back button is irrelevant to the above problem, which would only have been prevented by disabling being able to leave the page by clicking on a favorites. There is javascript to attempt to prevent users from leaving pages -- lots of spam sites use it. Of course it doesn't work well though, and is often extremely annoying. William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: paths in graphs
On Mon, Apr 27, 2009 at 12:06 PM, Jason Grout
jason-s...@creativetrax.com wrote:
William Stein wrote:
On Mon, Apr 27, 2009 at 10:02 AM, Jason Grout
jason-s...@creativetrax.com wrote:
William Stein wrote:
On Mon, Apr 27, 2009 at 7:45 AM, Robert Miller r...@rlmiller.org wrote:
On Mon, Apr 27, 2009 at 6:47 AM, William Stein wst...@gmail.com wrote:
Hi Robert,
Did you guys every write any code to plot *paths* in graphs?
No, but you can color the edges of the path differently.
That is pretty bad, IMHO. E.g., try this:
g = graphs.CompleteGraph(5)
g.plot(edge_colors={'red':[(0,1)]})
If you try to color any edges, then it *deletes* all other edges that
aren't colored.
Well, deletes is a pretty strong word. More accurately, it doesn't
show any edges for which you didn't specify a color.
I've found this to be a slight annoyance when I wanted to create pretty
edge-colored graphs, as I have to specifically color my other edges black.
So do you also consider it a bug? I don't want to report bugs about
graph theory until getting some graph theorists to agree, since I'm
not a graph theorist.
I don't know that it is a bug (i.e., an unintended consequence or
mistake), but it is an interface decision that I think is annoying and
surprising. For that reason, I'd be +1 on changing it.
I think vertex_colors also has the same convention of hiding vertices
that are not specified.
It's even worse. It leaves in the vertex label but forgets to draw
the circle around it. Ouch.
You might also be interested in the highlight function from the bottom
of #2378, which is a first step towards implementing functionality like
the mathematica Highlight and AnimateGraph commands:
http://reference.wolfram.com/mathematica/Combinatorica/ref/Highlight.html
http://reference.wolfram.com/mathematica/Combinatorica/ref/AnimateGraph.html
Jason
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
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[sage-support] Re: Accessing a Sage 'instance' over the web; URL=???
On Apr 27, 2009, at 11:46 , rvaug...@gmail.com wrote: I have successfully installed the latest sage on a Fedora Core 9 machine (name of machine: strings358). It seems to work fine. One of my users wishes to access this remotely from his Mac OS laptop. When he runs sage on his laptop, it tells him to open his browser to http://localhost:8000. What do I tell him? How can he access the sage instance on strings358 via his browser over the web? In order to access the sage instance running on 'string358', from his laptop running somewhere else in the network, he needs to be able to access 'string358'. Normally, this would be something like http://string358.google.edu; for web access. Then just append the :8000:. The :8000 says to use port 8000, instead of the well-known port 80 for http access (we do this to avoid conflicts on systems that already run a webserver). And is there *any* documentation re installation/configuration of Sage? The is a fair amount of documentation that comes with sage and is separately available on the sage website: http://www.sagemath.org/doc The documentation you want may not be there, or it may not be where you expect it to be. If either is the case, send mail to this list indicating the problems you see. HTH Justin -- Justin C. Walker Curmudgeon-at-large Director Institute for the Absorption of Federal Funds 186,000 Miles per Second Not just a good idea: it's the law! --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Accessing a Sage 'instance' over the web; URL=???
On Apr 27, 12:31 pm, Justin C. Walker jus...@mac.com wrote: On Apr 27, 2009, at 11:46 , rvaug...@gmail.com wrote: I have successfully installed the latest sage on a Fedora Core 9 machine (name of machine: strings358). It seems to work fine. One of my users wishes to access this remotely from his Mac OS laptop. When he runs sage on his laptop, it tells him to open his browser tohttp://localhost:8000. What do I tell him? How can he access the sage instance on strings358 via his browser over the web? In order to access the sage instance running on 'string358', from his laptop running somewhere else in the network, he needs to be able to access 'string358'. Normally, this would be something like http://string358.google.edu; for web access. Then just append the :8000:. The :8000 says to use port 8000, instead of the well-known port 80 for http access (we do this to avoid conflicts on systems that already run a webserver). Read notebook? from inside a Sage session. Cheers, Michael --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: Accessing a Sage 'instance' over the web; URL=???
On Apr 27, 12:34 pm, mabshoff michael.absh...@mathematik.uni- dortmund.de wrote: On Apr 27, 12:31 pm, Justin C. Walker jus...@mac.com wrote: On Apr 27, 2009, at 11:46 , rvaug...@gmail.com wrote: I have successfully installed the latest sage on a Fedora Core 9 machine (name of machine: strings358). It seems to work fine. One of my users wishes to access this remotely from his Mac OS laptop. When he runs sage on his laptop, it tells him to open his browser tohttp://localhost:8000. What do I tell him? How can he access the sage instance on strings358 via his browser over the web? In order to access the sage instance running on 'string358', from his laptop running somewhere else in the network, he needs to be able to access 'string358'. Normally, this would be something like http://string358.google.edu; for web access. Then just append the :8000:. The :8000 says to use port 8000, instead of the well-known port 80 for http access (we do this to avoid conflicts on systems that already run a webserver). Read notebook? from inside a Sage session. From a brief look, I think the docstring could be more helpful. For instance, the second sentence refers you to the (as far as I can tell) non-existent chapter Running the SAGE Notebook Securely in the installation guide. I like the examples later on, though. John --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: request for SAGE DVD
Thank you, I've tested it yesterday and it work very fine. I will prepare this Live CD copies, they are quite easy to handle for high school students. BN On 27 Kwi, 03:24, cch cchu...@mail.cgu.edu.tw wrote: We have also made a live Sage DVD (hosted on slax-linux). DVD owns Sage-3.4.1, python-2.6 environment, most open-source CAS (Maxima-5.18, octave-5.0.5, Scilab-5.1) and gcc/libtool. Feel free to download from the following site: http://diffusion.cgu.edu.tw/ftp/TeXmacs-CAS-py26-Sage.iso cch --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: request for SAGE DVD
Thank you, I've tested it yesterday and it work very fine! BN On 27 Kwi, 03:24, cch cchu...@mail.cgu.edu.tw wrote: We have also made a live Sage DVD (hosted on slax-linux). DVD owns Sage-3.4.1, python-2.6 environment, most open-source CAS (Maxima-5.18, octave-5.0.5, Scilab-5.1) and gcc/libtool. Feel free to download from the following site: http://diffusion.cgu.edu.tw/ftp/TeXmacs-CAS-py26-Sage.iso cch --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: DSage on Amazon EC2
Do you intend to build a cluster this way or just want to test/develop dsage ? Serge Andrzej Giniewicz пишет: Hi, I just wonder - does anyone have experience on running DSage on Amazon EC2 (on preferably more than one instance) or similar Cloud-Computing service? I'm preparing to try out the platform but because of it's non- zero cost I'd prefer not go in blind, would be very happy if someone who did it already could share some or any informations about how it runs there, with what optimizations, etc regards, Andrzej. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] SageWorld
Hello, I wonder how it is possible to make a common shared objects space for all of the users on the Sage server ? The idea is to make available the mathematical space to users providing that they all can have access from within their own sessions to a common session. As far as I understand: I propose to install server as multiuser app with unix accounts. Each user runs IPython shell when working with Sage (also from notebook). There is a need to make the user objects accessible to others (say, like to work in the same session). The best would be even to use ACLs for controlling access to objects (say, another user cannot modify object but only read and use it). Could you please point me to the right direction. I suppose I should look for this somewhere in python functionality ? Comments are welcome. Serge --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: problem with server_pool.
I suppose sage user doesn't have rights to create users or Sage itself
doesn't create unix users.
just a comment
Serge
Thierry Dumont пишет:
I am trying to use Sage (3.4) with a server pool *and* ldap identification.
- As user sage I run the notebook with the following parameters:
notebook(port=8001,secure=True,address='',server_pool=['sa...@localhost'],open_viewer=False,accounts=True)
sage1 is an other Unix user, and I can ssh from sage user to sage1
without password.
- Suppose that this is the first time I log in sage; I give my login
and password, look for them in the ldap directory and, if everything is
ok, I proceed exactly as for a public server, that is to say that Sage
creates a new user (a new Sage user).
I can verify that Sage is running as sage1.
But the new user is created in the .sage/sage-notebook/worksheets of the
*sage* user (not the *sage1*).
I can connect to the server, but then, and for me it is not surprising,
I have no rights and can do nothing:
Example:
2+1
(evaluate)
Traceback (click to the left for traceback)
...
IOError: [Errno 13] Permission denied:
'/home/sage/.sage/sage_notebook/worksheets/Thierry.Dumont/2/code/1.py'
---
On the public sage-server (your server), it seems that sage is running
as worksheet (that is what says: system('whoami')), but the home
directories belong to sage. So there is something I do not understand.
An other (small) problem: I had to unsubscribe from sage-support list
for some time. I subscribed again (by mail), but I do not receive
answers to my mails, as before unsubscribing. But this not important, I
can look at the messages on the web.
Yours
t.d.
-
French universities are on a permanent strike!
Have a look at the International Call:
http://math.univ-lyon1.fr/appel
-
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[sage-support] Re: DSage on Amazon EC2
Hi, Do you intend to build a cluster this way or just want to test/develop dsage ? right now just for tests, later for personal use in simulations to get more processing power reserve to speed up some simulation for cost of one beer and who know what more if it will be working - surely will be interested in dsage based algorithms and dsage itself :)... anyway I'm still at research stage, found cpuinfo of EC2 instances - http://www.cloudiquity.com/2009/01/amazon-ec2-instances-and-cpuinfo/ - that's output from inside virtual host that seem to be Xen based. One can upload totally custom OS image so it might be working, still reading message boards and pages though cheers, Andrzej. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: SageWorld
On Mon, Apr 27, 2009 at 5:01 PM, Serge Salamanka salsa-...@tut.by wrote:
Hello,
I wonder how it is possible to make a common shared objects space for
all of the users on the Sage server ?
If X is any object in any Sage session then any user can type
save(X, '/tmp/name.sobj')
and any other user can load X by typing
X = load('/tmp/name.sobj')
That basically accomplishes what you asked for, right?
-- William
The idea is to make available the mathematical space to users providing
that they all can have access from within their own sessions to a common
session.
As far as I understand:
I propose to install server as multiuser app with unix accounts.
Each user runs IPython shell when working with Sage (also from notebook).
There is a need to make the user objects accessible to others (say, like
to work in the same session).
The best would be even to use ACLs for controlling access to objects
(say, another user cannot modify object but only read and use it).
Could you please point me to the right direction.
I suppose I should look for this somewhere in python functionality ?
Comments are welcome.
Serge
--
William Stein
Associate Professor of Mathematics
University of Washington
http://wstein.org
--~--~-~--~~~---~--~~
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URLs: http://www.sagemath.org
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[sage-support] Re: problem with server_pool.
On Apr 27, 2009, at 5:08 PM, Serge Salamanka wrote:
I suppose sage user doesn't have rights to create users or Sage itself
doesn't create unix users.
Sage itself doesn't create the users--thats something that you have
to set up yourself beforehand. (It would be cool if it could, but it
takes a lot of permissions to create users...)
just a comment
Serge
Thierry Dumont пишет:
I am trying to use Sage (3.4) with a server pool *and* ldap
identification.
- As user sage I run the notebook with the following parameters:
notebook(port=8001,secure=True,address='',server_pool=
['sa...@localhost'],open_viewer=False,accounts=True)
sage1 is an other Unix user, and I can ssh from sage user to
sage1
without password.
- Suppose that this is the first time I log in sage; I give my login
and password, look for them in the ldap directory and, if
everything is
ok, I proceed exactly as for a public server, that is to say that
Sage
creates a new user (a new Sage user).
I can verify that Sage is running as sage1.
But the new user is created in the .sage/sage-notebook/worksheets
of the
*sage* user (not the *sage1*).
I can connect to the server, but then, and for me it is not
surprising,
I have no rights and can do nothing:
Example:
2+1
(evaluate)
Traceback (click to the left for traceback)
...
IOError: [Errno 13] Permission denied:
'/home/sage/.sage/sage_notebook/worksheets/Thierry.Dumont/2/code/
1.py'
---
On the public sage-server (your server), it seems that sage is
running
as worksheet (that is what says: system('whoami')), but the home
directories belong to sage. So there is something I do not
understand.
An other (small) problem: I had to unsubscribe from sage-support list
for some time. I subscribed again (by mail), but I do not receive
answers to my mails, as before unsubscribing. But this not
important, I
can look at the messages on the web.
Yours
t.d.
-
French universities are on a permanent strike!
Have a look at the International Call:
http://math.univ-lyon1.fr/appel
-
--~--~-~--~~~---~--~~
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URLs: http://www.sagemath.org
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[sage-support] Re: problem with server_pool.
On Mon, Apr 27, 2009 at 5:02 PM, Robert Bradshaw rober...@math.washington.edu wrote: On Apr 27, 2009, at 5:08 PM, Serge Salamanka wrote: I suppose sage user doesn't have rights to create users or Sage itself doesn't create unix users. Sage itself doesn't create the users--thats something that you have to set up yourself beforehand. (It would be cool if it could, but it takes a lot of permissions to create users...) It would be great if Sage could create users. Then we could finally easily have more than 100,000 Sage users! (Our next goal.) William --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: DSage on Amazon EC2
I have a setup of ten Sage worker nodes with one server. Make experiments with gLite-based Grid. If one could be in BalticGrid virtual organization he could use the worker nodes. As I understand dsage can only submit jobs to worker nodes and get the results without any communication between them. If you need to speed up simulation with parts of code running separately you are better off in Grid with its huge resources. Andrzej Giniewicz пишет: Hi, Do you intend to build a cluster this way or just want to test/develop dsage ? right now just for tests, later for personal use in simulations to get more processing power reserve to speed up some simulation for cost of one beer and who know what more if it will be working - surely will be interested in dsage based algorithms and dsage itself :)... anyway I'm still at research stage, found cpuinfo of EC2 instances - http://www.cloudiquity.com/2009/01/amazon-ec2-instances-and-cpuinfo/ - that's output from inside virtual host that seem to be Xen based. One can upload totally custom OS image so it might be working, still reading message boards and pages though cheers, Andrzej. --~--~-~--~~~---~--~~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~--~~~~--~~--~--~---
[sage-support] Re: SageWorld
I found Pyro with exceptional functionality.
pyro.sourceforge.net
This might be used for the purpose?
I just need to make easily accessible the objects that other user
creates during his session and also share my objects.
Better this would be fully automated rather than loading/saving
William Stein пишет:
On Mon, Apr 27, 2009 at 5:01 PM, Serge Salamanka salsa-...@tut.by wrote:
Hello,
I wonder how it is possible to make a common shared objects space for
all of the users on the Sage server ?
If X is any object in any Sage session then any user can type
save(X, '/tmp/name.sobj')
and any other user can load X by typing
X = load('/tmp/name.sobj')
That basically accomplishes what you asked for, right?
-- William
The idea is to make available the mathematical space to users providing
that they all can have access from within their own sessions to a common
session.
As far as I understand:
I propose to install server as multiuser app with unix accounts.
Each user runs IPython shell when working with Sage (also from notebook).
There is a need to make the user objects accessible to others (say, like
to work in the same session).
The best would be even to use ACLs for controlling access to objects
(say, another user cannot modify object but only read and use it).
Could you please point me to the right direction.
I suppose I should look for this somewhere in python functionality ?
Comments are welcome.
Serge
--~--~-~--~~~---~--~~
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