[sage-support] On best way to use plot() with functions...
def g(x): return numerical_integral(sin(t),0,x)[0] For the function g, this works: sage: plot(g,x,2,4) but not this sage:plot(g(x), x, 2, 4) If I'm not mistaken, the first form of plot above works with ALL functions right? So is there any reason to ever bother with second form just because I *can* use it with symbolic functions? Chris --~--~-~--~~~---~--~~ 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: Plotting from linux console mode?
It turned out not to be a Sage issue at all, but a file association issue. My desktop (xfce) associated images with gqview; I changed the association to ImageMagick's display, and got what I wanted. -Alasdair On Apr 4, 4:26 pm, William Stein wst...@gmail.com wrote: 2009/4/3 Alasdair amc...@gmail.com: Thanks - in which file in the sage tree is this variable set? You might have been asking how to set it yourself. In linux (well, bash) do e.g., export SAGE_BROWSER=firefox -- 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] Security problem...
I am always preparing me Sage University wide server..
I think I have a big security problem:
Sage create users (looking for this in my ldap server, but this changes
nothing from a public server where every one can create an account).
One an account is created, I can access and *destroy* all other
accounts; it is sufficient for this to log in on the notebook, then to
launch the python interpreter; at is point I can do:
system('ls -l /scratch/sage/.sage/sage_notebook/worksheets/')
and worse:
system('rm -rf /scratch/sage/.sage/sage_notebook/worksheets/foo')
Mmmpf...
Is there any way to avoid this ?
Yours
t.d.
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begin:vcard
fn:Thierry Dumont
n:Dumont;Thierry
org;quoted-printable;quoted-printable:Universit=C3=A9 Lyon 1 CNRS.;Institut Camille Jordan -- Math=C3=A9matiques / Mathematics.
adr:;;43 Bd du 11 Novembre.;Villeurbanne;;69621;France
email;internet:tdum...@math.univ-lyon1.fr
title;quoted-printable:Ing=C3=A9nieur de Recherche / Research Engineer.
tel;work:04 72 44 85 23.
tel;fax:04 72 44 80 53
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url:http://math.univ-lyon1.fr/~tdumont
version:2.1
end:vcard
[sage-support] Re: Security problem...
2009/4/4 Thierry Dumont tdum...@math.univ-lyon1.fr:
I am always preparing me Sage University wide server..
I think I have a big security problem:
Sage create users (looking for this in my ldap server, but this changes
nothing from a public server where every one can create an account).
One an account is created, I can access and *destroy* all other
accounts; it is sufficient for this to log in on the notebook, then to
launch the python interpreter; at is point I can do:
system('ls -l /scratch/sage/.sage/sage_notebook/worksheets/')
and worse:
system('rm -rf /scratch/sage/.sage/sage_notebook/worksheets/foo')
Mmmpf...
Is there any way to avoid this ?
Type
sage: notebook?
and read:
-
server_pool -- (default: None) list; this option specifies that
worksheet processes run as a separate user (chosen
from the list in the server_pool -- see below).
4. I want to create a Sage notebook server that is open to anybody in
the world to create new accounts. To run the Sage notebook publically
(1) at a minimum run it from a chroot jail or inside a virtual
machine (see wiki.sagemath.org/StartingTheNotebook and the Sage
install guide) and (2) use a command like
notebook(address='', server_pool=['sa...@localhost'],
ulimit='-v 50', accounts=True)
The server_pool option specifies that worksheet processes run as a
separate user. The ulimit option restricts the memory available to
each worksheet processes to 500MB. See help on the `accounts' option
above.
Be sure to make that the sage_notebook/nb.sobj and contents of
sage_notebook/backups is chmod og-rwx, i.e., only readable by the
notebook process, since otherwise any user can read nb.sobj, which
contains user email addresses and account information (password are
stored hashed, so fewer worries there). You will need to use the
`directory' option to accomplish this.
-
To make things more secure you should have a bunch (e.g., 100)
accounts in the server_pool and not just one as it shows above.
We currently don't have something to 1:1 map users to accounts in the
server pool, but this would make it so nobody could touch anybody
else's files at all. Nobody has found the time to implement this,
though I think it would be quite easy.
William
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[sage-support] Re: Security problem...
On Apr 4, 2009, at 12:43 AM, Thierry Dumont wrote:
I am always preparing me Sage University wide server..
I think I have a big security problem:
Sage create users (looking for this in my ldap server, but this
changes
nothing from a public server where every one can create an account).
One an account is created, I can access and *destroy* all other
accounts; it is sufficient for this to log in on the notebook,
then to
launch the python interpreter; at is point I can do:
system('ls -l /scratch/sage/.sage/sage_notebook/worksheets/')
and worse:
system('rm -rf /scratch/sage/.sage/sage_notebook/worksheets/foo')
Mmmpf...
Is there any way to avoid this ?
See the server_pool option, which can be used to mitigate this kind
of abuse. I think the only real security will come by assigning a one-
to-one correspondence between notebook users and unix accounts, but
as of yet there's not a way to do that. Or it would be cool if one
could create restricted ephemeral uids to run the worksheets
processes under.
We mostly rely on the benevolence of 99% of the users out there, and
the fact that there's little to gain by taking the notebook down.
(Also, as it's in a VMware image, it's easy to restore so it's not
like you can seriously hurt us).
- Robert
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[sage-support] plotjoined='True'
I am learning how to plot in sage and tried the following example: x=srange(0, 4, 0.2) y=srange(0, 4, 0.2) xy = zip(x,y) list_plot(xy,pointsize=40,faceted='True',rgbcolor='white') This works perfect, but if I add the option plotjoined='True' I got a mistake and then I have to plot this option as unique parameter: list_plot(xy,plotjoined='True') Is there any way to plot the points joined with the line with an unique plot_list function? I guess I could use matplotlib, but I have to get use to the easy way to plot just before start with PS: list_plot() --~--~-~--~~~---~--~~ 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] How to test?
I have have uploaded and installed Sage(the CentOS version) on my Linux server. I have configured the sage script to point at the sage directory. Should it now start from a browser? If so how? The docs talk about ./sage to start. Is this in Linux. I am a novice. I have the Windows version on my PC and works great. What do I have to do to get it functioning on the server. Thanks --~--~-~--~~~---~--~~ 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] Install on CentOS
I have put all the files on the Linux server(CentOSv4.7). Modified the sage script to point to the sage dir. Now what? What does ./ sage mean. I am a novice. --~--~-~--~~~---~--~~ 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] Printing a worksheet with plots does not work
Hi, I don't know if I am doing something wrong, but if a worksheet has a command like show(plot(cos(x),x,-3,3)) And then I try to print (say to a file), the output shows nothing starting at the plot. Any ideas? Am I the only one? Peace. -Adrian. --~--~-~--~~~---~--~~ 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: How to test?
Mikie wrote: I have have uploaded and installed Sage(the CentOS version) on my Linux server. I have configured the sage script to point at the sage directory. Should it now start from a browser? If so how? The docs talk about ./sage to start. Is this in Linux. I am a novice. I have the Windows version on my PC and works great. What do I have to do to get it functioning on the server. Thanks I suppose you can login to the server. In order to run sage the script has to be in your $PATH. One way to test this is to 'cd' (chdir) to the directory you installed sage in. Now type ./sage and sage will start up in command line mode: [j...@paix sage-3.4]$ ./sage -- | Sage Version 3.4, Release Date: 2009-03-10 | | Type notebook() for the GUI, and license() for information.| -- sage: 1+1 2 sage: (exit with cntrl-D) To run sage as notebook you can type from the sage prompt: sage: notebook() or from the shell ./sage -notebook Good luck! Jaap --~--~-~--~~~---~--~~ 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] Is newton-raphson already in SAGE?
Is newton-raphson already in SAGE? Thanks, Brian --~--~-~--~~~---~--~~ 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: How to test?
How do I test if from a browser? On Apr 4, 11:07 am, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I have have uploaded and installed Sage(the CentOS version) on my Linux server. I have configured the sage script to point at the sage directory. Should it now start from a browser? If so how? The docs talk about ./sage to start. Is this in Linux. I am a novice. I have the Windows version on my PC and works great. What do I have to do to get it functioning on the server. Thanks I suppose you can login to the server. In order to run sage the script has to be in your $PATH. One way to test this is to 'cd' (chdir) to the directory you installed sage in. Now type ./sage and sage will start up in command line mode: [j...@paix sage-3.4]$ ./sage -- | Sage Version 3.4, Release Date: 2009-03-10 | | Type notebook() for the GUI, and license() for information. | -- sage: 1+1 2 sage: (exit with cntrl-D) To run sage as notebook you can type from the sage prompt: sage: notebook() or from the shell ./sage -notebook Good luck! Jaap --~--~-~--~~~---~--~~ 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: Is newton-raphson already in SAGE?
Sort of. Look in the examples/calculus subdirectory. On Sat, Apr 4, 2009 at 1:57 PM, Brian medo...@gmail.com wrote: Is newton-raphson already in SAGE? Thanks, Brian --~--~-~--~~~---~--~~ 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: How to test?
Mikie wrote: How do I test if from a browser? Which browser? From where? We definitely need more info. Jaap On Apr 4, 11:07 am, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I have have uploaded and installed Sage(the CentOS version) on my Linux server. I have configured the sage script to point at the sage directory. Should it now start from a browser? If so how? The docs talk about ./sage to start. Is this in Linux. I am a novice. I have the Windows version on my PC and works great. What do I have to do to get it functioning on the server. Thanks I suppose you can login to the server. In order to run sage the script has to be in your $PATH. One way to test this is to 'cd' (chdir) to the directory you installed sage in. Now type ./sage and sage will start up in command line mode: [j...@paix sage-3.4]$ ./sage -- | Sage Version 3.4, Release Date: 2009-03-10 | | Type notebook() for the GUI, and license() for information.| -- sage: 1+1 2 sage: (exit with cntrl-D) To run sage as notebook you can type from the sage prompt: sage: notebook() or from the shell ./sage -notebook Good luck! Jaap --~--~-~--~~~---~--~~ 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] configuring y-axis in plot
How can I set things like ymax, ymin, and ystep in my plot? Also, sometimes my plots have ticks on the y axis but only 1 and sometimes ZERO labels. I'd like to configure that too. Thanks in advance for the tips, Brian --~--~-~--~~~---~--~~ 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: Is newton-raphson already in SAGE?
On Apr 4, 2009, at 11:24 AM, David Joyner wrote: Sort of. Look in the examples/calculus subdirectory. The algorithm is used all over--e.g. square roots of power series are computed via newton-raphson. I am pretty sure many of the numerical optimization/root finding algorithms use it as well. What are you trying to use it for? On Sat, Apr 4, 2009 at 1:57 PM, Brian medo...@gmail.com wrote: Is newton-raphson already in SAGE? Thanks, Brian --~--~-~--~~~---~--~~ 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: How to test?
FireFox. I host is BlueHost. Can't I enter a url to start Sage? On Apr 4, 12:21 pm, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: How do I test if from a browser? Which browser? From where? We definitely need more info. Jaap On Apr 4, 11:07 am, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I have have uploaded and installed Sage(the CentOS version) on my Linux server. I have configured the sage script to point at the sage directory. Should it now start from a browser? If so how? The docs talk about ./sage to start. Is this in Linux. I am a novice. I have the Windows version on my PC and works great. What do I have to do to get it functioning on the server. Thanks I suppose you can login to the server. In order to run sage the script has to be in your $PATH. One way to test this is to 'cd' (chdir) to the directory you installed sage in. Now type ./sage and sage will start up in command line mode: [j...@paix sage-3.4]$ ./sage -- | Sage Version 3.4, Release Date: 2009-03-10 | | Type notebook() for the GUI, and license() for information. | -- sage: 1+1 2 sage: (exit with cntrl-D) To run sage as notebook you can type from the sage prompt: sage: notebook() or from the shell ./sage -notebook Good luck! Jaap- Hide quoted text - - Show quoted text - --~--~-~--~~~---~--~~ 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: How to test?
On Sat, Apr 4, 2009 at 3:18 PM, Mikie thephantom6...@hotmail.com wrote: FireFox. I host is BlueHost. Can't I enter a url to start Sage? You should not be using a shared inexpensive web host to run the notebook. BlueHost has low cpu limits and their firewall may prevent you from accessing your notebook. You might want to look into virtual private servers from slicehost.com and linode.com On Apr 4, 12:21 pm, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: How do I test if from a browser? Which browser? From where? We definitely need more info. Jaap On Apr 4, 11:07 am, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I have have uploaded and installed Sage(the CentOS version) on my Linux server. I have configured the sage script to point at the sage directory. Should it now start from a browser? If so how? The docs talk about ./sage to start. Is this in Linux. I am a novice. I have the Windows version on my PC and works great. What do I have to do to get it functioning on the server. Thanks I suppose you can login to the server. In order to run sage the script has to be in your $PATH. One way to test this is to 'cd' (chdir) to the directory you installed sage in. Now type ./sage and sage will start up in command line mode: [j...@paix sage-3.4]$ ./sage -- | Sage Version 3.4, Release Date: 2009-03-10 | | Type notebook() for the GUI, and license() for information. | -- sage: 1+1 2 sage: (exit with cntrl-D) To run sage as notebook you can type from the sage prompt: sage: notebook() or from the shell ./sage -notebook Good luck! Jaap- Hide quoted text - - Show quoted text - --~--~-~--~~~---~--~~ 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: Is newton-raphson already in SAGE?
Finding the yield of a bond given a price. You can see a demonstration here: http://www.sagenb.org/home/pub/423/ The newton-raphson usage starts after the 3d plot. Brian On Apr 4, 1:06 pm, Robert Bradshaw rober...@math.washington.edu wrote: On Apr 4, 2009, at 11:24 AM, David Joyner wrote: Sort of. Look in the examples/calculus subdirectory. The algorithm is used all over--e.g. square roots of power series are computed via newton-raphson. I am pretty sure many of the numerical optimization/root finding algorithms use it as well. What are you trying to use it for? On Sat, Apr 4, 2009 at 1:57 PM, Brian medo...@gmail.com wrote: Is newton-raphson already in SAGE? Thanks, Brian --~--~-~--~~~---~--~~ 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: How to test?
Mikie wrote: FireFox. I host is BlueHost. Can't I enter a url to start Sage? Type notebook? at the sage prompt to get more documentation. sage: notebook? Jaap --~--~-~--~~~---~--~~ 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: jmol problem
My jmol plot at sagenb.org is working for me now: http://www.sagenb.org/home/pub/423/ On Apr 3, 11:14 pm, William Stein wst...@gmail.com wrote: 2009/4/3 Timothy Clemans timothy.clem...@gmail.com: I get the same. This historically has been a problem with the public notebook(s). I 100% disagree. This has *not* historically been a problem with the public notebooks. I have used them millions of times with numerous browsers from many places to draw 3d plots using jmol. I just did the same plot on another public notebook server (on the same machine) and it works fine: http://demo2.sagenb.org/home/pub/3/ There is a serious problem with the Linux install (or vmware virtual machine) that currently hosts sagenb.org, which manifest itself about 2 days ago -- for some reason the OS is randomly killing processes. This could be the result of some sort of attack, or just some other problem; I don't know. That's probably what is responsible for your graph at sagenb.org to not work. I'm actually very surprisedhttp://sagenb.orgis working at all. 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] Inverse in integer mod ring
Hi, I get this: sage: R=IntegerModRing(8) sage: m=matrix(R,2,[2,1,3,3]);m.det() sage: m.inverse() Traceback (most recent call last): ... TypeError: self must be an integral domain. sage: m^-1 Traceback (most recent call last): ... TypeError: self must be an integral domain. Actually, R(3)^-1 produces an error message. I use Sage 3.4. Is someone implementing the inverse operation in integer mod rings? --~--~-~--~~~---~--~~ 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: Inverse in integer mod ring
On Apr 4, 2009, at 12:55 PM, Kwankyu wrote: Hi, I get this: sage: R=IntegerModRing(8) sage: m=matrix(R,2,[2,1,3,3]);m.det() sage: m.inverse() Traceback (most recent call last): ... TypeError: self must be an integral domain. sage: m^-1 Traceback (most recent call last): ... TypeError: self must be an integral domain. Actually, R(3)^-1 produces an error message. I use Sage 3.4. Is someone implementing the inverse operation in integer mod rings? You could try lifting, computing the inverse there, then reducing. sage: m.change_ring(ZZ).inverse().change_ring(R) [1 5] [7 6] sage: m.change_ring(ZZ).inverse().change_ring(R) * m [1 0] [0 1] The problem is that the inverse is typically defined over the fraction field, and so it must be an integral domain to have one. - Robert --~--~-~--~~~---~--~~ 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: How to test?
I am in linux on BlueHost. ./sage and I get error shar libraies: requires glibc 2.5 or later. On Apr 4, 1:29 pm, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: FireFox. I host is BlueHost. Can't I enter a url to start Sage? Type notebook? at the sage prompt to get more documentation. sage: notebook? Jaap --~--~-~--~~~---~--~~ 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: Inverse in integer mod ring
Thanks Robert. But inverse operation in non integral domain is not supposed to be implemented in Sage? or is it just a missing feature yet? --~--~-~--~~~---~--~~ 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: Inverse in integer mod ring
On Sat, Apr 4, 2009 at 1:12 PM, Kwankyu ekwan...@gmail.com wrote: Thanks Robert. But inverse operation in non integral domain is not supposed to be implemented in Sage? or is it just a missing feature yet? Missing feature. Somebody should *definitely* implement this. A first reasonable thing would be lift to ZZ, invert, reduce. Make a trac ticket. 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: How to test?
Mikie wrote: I am in linux on BlueHost. ./sage and I get error shar libraies: requires glibc 2.5 or later. I'm sorry. Here you are on your own. See the answer of Timothy. Cheers, Jaap --~--~-~--~~~---~--~~ 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] Server for Sage
Is anyone running Sage a non-dedicated server such as BlueHost, Godaddy, etc? --~--~-~--~~~---~--~~ 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: Server for Sage
I am not using the notebooks. I want it to check answers to math problems in Moodle. On Apr 4, 2:35 pm, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: Is anyone running Sage a non-dedicated server such as BlueHost, Godaddy, etc? As far as I know: no! This is probably a bad idea. Jaap --~--~-~--~~~---~--~~ 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: Server for Sage
Mikie wrote: I am not using the notebooks. I want it to check answers to math problems in Moodle. I'm very sorry. Can't help you. Jaap --~--~-~--~~~---~--~~ 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: Inverse in integer mod ring
In the example above, R(3)^-1 produces the right answer (my mistake). Anyway the ticket for inverse operation for matrices over integer mod ring is now in Ticket #5683. Kwankyu --~--~-~--~~~---~--~~ 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: Server for Sage
On Sat, Apr 4, 2009 at 4:57 PM, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I am not using the notebooks. I want it to check answers to math problems in Moodle. I'm very sorry. Can't help you. Jaap You're welcome to use sagenb.org --~--~-~--~~~---~--~~ 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: How to test?
On Sat, Apr 4, 2009 at 4:27 PM, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I am in linux on BlueHost. ./sage and I get error shar libraies: requires glibc 2.5 or later. I'm sorry. Here you are on your own. See the answer of Timothy. You're likely stuck. I'm sure if you try to build Sage on their server that your account will get automatically suspended due to cpu load limits. Cheers, Jaap --~--~-~--~~~---~--~~ 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: Server for Sage
Timothy Clemans wrote: On Sat, Apr 4, 2009 at 4:57 PM, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I am not using the notebooks. I want it to check answers to math problems in Moodle. I'm very sorry. Can't help you. Jaap You're welcome to use sagenb.org I know :)! But maybe your words were for Mikie. Jaap --~--~-~--~~~---~--~~ 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: How to test?
Timothy Clemans wrote: On Sat, Apr 4, 2009 at 4:27 PM, Jaap Spies j.sp...@hccnet.nl wrote: Mikie wrote: I am in linux on BlueHost. ./sage and I get error shar libraies: requires glibc 2.5 or later. I'm sorry. Here you are on your own. See the answer of Timothy. You're likely stuck. I'm sure if you try to build Sage on their server that your account will get automatically suspended due to cpu load limits. Please be careful in your answers :)! I'm not stuck. Jaap --~--~-~--~~~---~--~~ 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: jmol problem
On Apr 3, 10:14 pm, William Stein wst...@gmail.com wrote: 2009/4/3 Timothy Clemans timothy.clem...@gmail.com: I get the same. This historically has been a problem with the public notebook(s). I 100% disagree. This has *not* historically been a problem with the public notebooks. I have used them millions of times with numerous browsers from many places to draw 3d plots using jmol. I just did the same plot on another public notebook server (on the same machine) and it works fine: http://demo2.sagenb.org/home/pub/3/ There is a serious problem with the Linux install (or vmware virtual machine) that currently hosts sagenb.org, which manifest itself about 2 days ago -- for some reason the OS is randomly killing processes. This could be the result of some sort of attack, or just some other problem; I don't know. That's probably what is responsible for your graph at sagenb.org to not work. I'm actually very surprisedhttp://sagenb.orgis working at all. One reason for the OS to randomly kill processes is the Linux out-of- memory killer (OOM killer for short). Is there any chance that sagenb.org is running out of RAM? Are there any interesting messages if you log in and type dmesg? Actually, I just realized I could check this for myself, so I did... I don't see anything about the OOM killer, but there is a recurring, strange error message about BUG: soft lockup - CPU#0 stuck for 11s! [python:8525]. I don't know what this means, or if it has anything to do with this problem. Carl --~--~-~--~~~---~--~~ 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: jmol problem
On Apr 4, 3:12 pm, Carl Witty carl.wi...@gmail.com wrote: On Apr 3, 10:14 pm, William Stein wst...@gmail.com wrote: SNIP Actually, I just realized I could check this for myself, so I did... I don't see anything about the OOM killer, but there is a recurring, strange error message about BUG: soft lockup - CPU#0 stuck for 11s! [python:8525]. I don't know what this means, or if it has anything to do with this problem. Looks like a bug in the Ubuntu kernel. According to http://muffinresearch.co.uk/archives/2008/08/20/ubuntu-bug-soft-lockup-cpu0-stuck-for-11s/ updating to the latest kernel for 8.04LTS should make this go away. Carl 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 -~--~~~~--~~--~--~---
