Sparse matrices are used by people who --like me-- solve PDEs
discretized by, say finite elements or finite volumes on irregular
meshes. In these case the matrix is sparse, that is to say it has O(n)
non zero terms, for a matrix of size n. In real computations, n can be
much more than 10^6
Le 07/04/2023 à 23:53, John H Palmieri a écrit :
Some recent versions of Singular don't seem to work with Sage. You could
try "make distclean" (to start over) and "./configure
--with-system-singular=no" to force Sage to build its own Singular. Then
"make".
Yes, I had the same problem on
When doing numérical computations, you must use RDF floats, except for
very special purpose. RDF is your processor's float. The default Real
Field, based on MPFR (which by default as the same precision as RDF) is
slow as it is based on MPFR, a very good library, but MPFR is a software
based
You should start by installing "build-essential" and gfortran. To do
this you have to do:
sudo apt update
sudo apt install build-essential gfortran
sudo is mandatory (rivileged (root) access).
build-essential contains gcc and g++ compilers as well as some libraries
and tools, but not the
Le 08/10/2018 à 12:56, Dima Pasechnik a écrit :
> On Mon, Oct 8, 2018 at 11:34 AM Thierry Dumont
> wrote:
>>
>> I do:
>>
>> N= 10^8
>> theta= RDF(2*pi/N)
>> phi=[i*theta for i in range(0,N)]
>>
>> not something sophisticated...!
>>
I do:
N= 10^8
theta= RDF(2*pi/N)
phi=[i*theta for i in range(0,N)]
not something sophisticated...!
Also: it is not a good idea do do that: better use numpy. BUT
looking at "top" during the computation of
phi=[i*theta for i in range(0,N)],
the memory used jumps to 3Gb and then grows, grows...
Let's do this:
sage: R = PolynomialRing(AA,"x")
sage: x = R.gen()
sage: n=3
Then:
sage: chebyshev_T(n,x).parent()
Univariate Polynomial Ring in x over Algebraic Real Field
Ok. But:
sage: legendre_P(n,x).parent()
Symbolic Ring
why that ?
Yours,
t.
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Le 27/07/2018 à 01:11, rudolf ordoyne a écrit :
> my guess is that i'm unable to install sage since the most recent
> release of sage is for 16.04. after unpacking the .tar, running "sudo
> ./sage" gives "sudo: ./sage: command not found"
>
> has anyone else been using ubuntu 18.04?
>
Yes,
Many people like me like emacs but in the "new generation" of developers
many (some?) have switched to VisualStudio, which is now available on
Linux.
What about Sage and VisualStudio ? There is a python environment which
seems good:
Hi,
I am doing some performances measurements with Sage/scipy.
It's matrix x matrix multiplication (not a very new benchmark).
It appears that, on the same computer Sage version 8.0 uses Openblas
with multithreading, but not Sage version 8.1.beta3:
-Example (4 core, broadwell, 3.4ghz.
Le 31/01/2017 à 12:30, Jeroen Demeyer a écrit :
> On 2017-01-31 12:24, Thierry Dumont wrote:
>> I just git clone sage, then checkout origin/develop and make.
>> Then after some time, Python 3 is installed and compiled.
>
> Are you really sure about that? Did you set the SAG
Le 31/01/2017 à 11:49, Jeroen Demeyer a écrit :
> On 2017-01-31 09:42, Thierry Dumont wrote:
>> When trying to compile 7.6.beta1, which installed Python3, I got a
>> cython problem (cmp...):
>
> That's not news... Nobody ever said that Sage works with Python 3.
>
When trying to compile 7.6.beta1, which installed Python3, I got a
cython problem (cmp...):
[sagelib-7.6.beta1] [353/465] Cythonizing sage/rings/morphism.pyx
[sagelib-7.6.beta1]
[sagelib-7.6.beta1] Error compiling Cython file:
[sagelib-7.6.beta1]
Le 17/01/2017 à 00:09, Volker Braun a écrit :
> You can force a particular architecture with
>
> OPENBLAS_CONFIGURE="TARGET=PRESCOTT" make -p openblas
>
>
Yes! it works, thanks.
Otherwise there are solutions when the vitual machine is run by KVM/libvirt:
1) if you add
in the
I tried to install 7.5.1 from source on an Ubuntu 14.04 (yes, I have no
choice).
This fails when compiling openblas-0.2.19.p0, when building
libopenblas_banias-r0.2.19.a.
ar -ru ../libopenblas_banias-r0.2.19.a samax_k.o samin_k.o
.
.
ar: sgemm_kernel.o: No such file or directory.
In
Le 13/01/2017 à 11:09, Dima Pasechnik a écrit :
> IMHO you should be able to finish build by (repeatedly) running make.
> (It would in the end give you working Sage, although make will report an
> error in the end)
>
> Just in case, coxeter3 installs in 7.5 just fine for me (on a gentoo
> linux
Today, I have tried to upgrade from 7.4 to 7.5 (git pull; make ...)
I have a problem with the optional package coxeter3 (it does not compile).
Before trying to solve this problem with coxeter, I would like to know
if there is a canonical way to remove coxeter3 from sage tree to finish
the build
Le 08/11/2016 à 11:05, Vincent Delecroix a écrit :
> On 8 November 2016 at 10:17, Thierry Dumont <tdum...@math.univ-lyon1.fr>
> wrote:
>> Le 08/11/2016 à 08:43, Vincent Delecroix a écrit :
>>> Concerning representation of algebraic numbers, it is printed as an
>
Le 08/11/2016 à 08:43, Vincent Delecroix a écrit :
> Concerning representation of algebraic numbers, it is printed as an
> exact rational if and only if it is stored as an exact rational. It
> will be if the method exactify has been called on the underlying
> representation of the number. Here is
Something strange (at least for me).
I am computing with polynomials in QQbar[z]. So I do:
sage: P.=QQbar[]
And I define 2 polynomials N and D. Coefficients of N and D are all
real, algebraic numbers (say like QQbar(sqrt(3))) and I consider the
rational fraction R=N/D
sage: R.parent()
Le 01/09/2016 à 21:29, Pierre-Yves Bienvenu a écrit :
> Hi, I'm trying to use Sage 7.3 on Ubuntu. I've downloaded the archive,
> used archive manager to extract it and got a directory SageMath. Inside
> I double click the sage executable. The terminal opens and after a lot
> of lines starting
Le 31/08/2016 à 00:19, Volker Braun a écrit :
> On Tuesday, August 30, 2016 at 11:03:39 PM UTC+2, leif wrote:
>
> 48 GB claimed by *every* Sage process here
>
>
> Its a tiny fraction of the 128TB address space. We are not talking about
> used RAM here.
>
> which is *total* (not free!)
Le 30/08/2016 à 19:06, William Stein a écrit :
> On Tue, Aug 30, 2016 at 9:56 AM, Thierry Dumont
> <tdum...@math.univ-lyon1.fr> wrote:
>> I have two computers, and sage installed on both:
>>
>> 1) Ubuntu 12.04 , sage-7.3 on an nfs mount,y
>>
>> 2)
I have two computers, and sage installed on both:
1) Ubuntu 12.04 , sage-7.3 on an nfs mount,y
2) Ubuntu 16.04, sage-7.3 on a local system, on a ssd.
With the first one, sage starts slowly (as could be expected!), and I
have time to look at sage starting with "top". And during the starting
Le 20/08/2016 à 08:09, HG a écrit :
> I am testing jupyter lab, all my kernels are recognized except one : sage ?
> Is there a way to config it manually to be used in jupyterlab ?
> Regards
> Henri
>
THis is the first time I heard about jupyter lab ! (things evoluate very
fast...). But, in my
Le 21/04/2016 19:35, Volker Braun a écrit :
Linking with gsl is a known problem for the binary, should be fixed in 7.2
Actually, using a compiled buymyself 7.2 version, I have no problem.
No other solution than compiling?
t.d.
On Thursday, April 21, 2016 at 6:12:35 PM UTC+2, tdumont
Le 30/03/2016 22:33, jmarcellopere...@ufpi.edu.br a écrit :
start = time.time()
x = np.linalg.solve(A,B)
end = time.time()
print(end - start)
I have tried this juste now; sage version is 7.0
I get :
1) first version:
CPU times: user 6.88 s, sys: 76 ms, total: 6.95 s
Wall time: 2.03 s
Message transféré
Sujet : Re: Strange behavior with RealField(n)
Date : Mon, 22 Feb 2016 10:17:30 +0100
De : paul zimmermann <paul.zimmerm...@inria.fr>
Pour : Thierry Dumont <tdum...@math.univ-lyon1.fr>
Copie à : nbr...@sfu.ca
[please forward to sage-support, I am
Le 21/02/2016 20:40, John Cremona a écrit :
Try RealField(500).pi() and similar.
Yes, it works... but my small piece of code should also give correct
results...
thanks.
t.
On 21 Feb 2016 18:10, "Thierry Dumont" <tdum...@math.univ-lyon1.fr
<mailto:tdum...@math.univ-lyon1.fr
I have students who want to compute decimals of pi...so, what can we do
with RealField(n) ?
I make the following script (pi.sage):
for p in [2..10]:
R=RealField(10^p)
pii=4*atan(R(1))
print p,R,pii
Then, using sage 7.0 or 7.1.beta4:
Le 30/01/2016 22:49, Paul van Gorsel a écrit :
First I ran a 64 bits Linux Mint Debian Edition, unfortunately the
installation of Sage failed. Than I installed a 32 bit version (Linux
Mint 17.3), the same thing happened.
This is my laptop: HP-ProBook-4520s
Linux pgo-HP-ProBook-4520s
Le 27/01/2016 16:42, Volker Braun a écrit :
On Tuesday, January 26, 2016 at 12:43:28 PM UTC-5, tdumont wrote:
For binary distributions, we can install it at any place we want, no?
What is the difference?
The binary is built with a long path and comes with a script that
search it with
Le 25/01/2016 15:37, Volker Braun a écrit :
The directory path has to match, if its different on server and client
then you have to compile it on the client (or mount on the server in the
same path first).
Ok it's working. But is it something new ?
For binary distributions, we can install it
Hello,
I have tried to switch from 6.10 to 7.0, but... I have some problems.
1) Let me fist explain the architecture of our client/server installation:
-We have a nfs server (Debian + Zfs) which export a directory
(/srv/local64) to a large number of clients (all Ubuntu 14.O4-LTS) but
with
This seems related to the problem I had when running sage under jupyter
hub, and also in jupyter (the later: launching jupyter, then sage
6.0beta1):
-some parts of the documentation (the documentation in the sage tree)
cannot be accessed (FAQs for example).
But now (since 6.0beta1?), jsmol
Le 10/10/2015 22:32, Jeroen Demeyer a écrit :
On 2015-10-10 21:24, Emmanuel Charpentier wrote:
In [2]:
%display simple
solve(x^2+1==0,x,to_poly_solve="force")
Out[2]:
[]
Huh ?
Works for me...
In any case, it would be very unlikely that a Sage command actually
gives different output in the
Hi,
With a colleague well known here (N. T. from Orsay) we started to play
with Jupyterhub and Sage during a rainy social day of the congress of
the French Society for Applied Maths (SMAI).
Actually, building a Jupyterhub server is something easy, and running
Sage in it also. But there remain
Le 01/07/2015 08:23, Ralf Stephan a écrit :
On Tuesday, June 30, 2015 at 1:24:23 PM UTC+2, tdumont wrote:
Why is xxc in Symbolic Ring and not in Algebraic Field?
mxx and xxc are essentialy the same thing, no ?
When you input sqrt(2) it is not clear which object you want,
Sage
I have found something a bit strange for me:
sage: xx=QQ(2)
sage: xx.parent()
Rational Field
ok...
sage: xxc=xx.sqrt()
sage: xxc.parent()
Symbolic Ring
Why not, but now:
sage: M1=matrix(QQ,1,1,[2])
sage: M1.parent()
Full MatrixSpace of 1 by 1 dense matrices over Rational Field
sage:
Le 08/05/2015 10:23, Vincent Delecroix a écrit :
Bonjour Thierry,
Could you post your matrices Prec, M, mfeEast? I am not able to
reproduce the problem with change_ring...
Vincent
Hello Vincent.
Yes,
I join a part of my code, which reproduces the problem...
Yours
t.
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You received this
Hello,
I have 2 matrices: Prec and M.
sage: Prec.parent
Full MatrixSpace of 4 by 4 dense matrices over Rational Field
sage: M.parent()
Full MatrixSpace of 4 by 4 dense matrices over Rational Field
sage: Prec.is_symetric()
True
ok. I also know that Prec is positive. Then, I do:
sage:
Le 08/05/2015 11:00, Vincent Delecroix a écrit :
On 08/05/15 10:52, Thierry Dumont wrote:
Le 08/05/2015 10:23, Vincent Delecroix a écrit :
Bonjour Thierry,
Could you post your matrices Prec, M, mfeEast? I am not able to
reproduce the problem with change_ring...
Vincent
Hello Vincent.
Yes
I apologize for this question: I am sure I have seen the answer
somewhere, but I cannot find int..
I run some sage code: for example I solve a linear system with
coefficients in QQ, then an other one with coefficients in RDF.
I want to list which library (package) is used in both cases.
This
Le 22/04/2014 18:33, leif a écrit :
Volker Braun wrote:
On Tuesday, April 22, 2014 4:43:43 PM UTC+1, tdumont wrote:
I am in 6.1.1; as far as as know, I have built sage from source,
using
the system Atlas blasand I have just upgraded from Ubuntu
13.10 to
14.04. Could the problem
Dear all,
I have juste installed 6.1 with the Ubuntu ppa on my lab's machines...:
apt-get nstall sagemath-upstream-binary sagemath-optional
(we are in LTS, Ubuntu 12.04);
The directories:
sloane/
jones/
are installed in / !!! (yes: i say /)
idem if I do:
sage -i sage-mode
a directory
Le 10/02/2014 17:07, slelievre a écrit :
Jan Groenewald prepared a PPA for Sage 6.1.1, see his post on sage-release:
https://groups.google.com/d/msg/sage-release/qhQ2BPM34Z0/kmneDmNsuroJ
Great, it works fine.
Thanks!
May be it would be good to make mirrors of the ppa?
Nawadays I download
Hello,
may be you remember I made a patch to (old) versions of the notebook to
use ldap.
But, I am switching to sage 6.0, and I want to use ldap again.
So, I installed (system wide)
libldap2-dev libsasl2-dev
and
openssl
Then in sage:
./sage -sh
(sage-sh) easy_install python-ldap
Ok.
Then
I cannot install graphviz:
sage -i graphviz...
make[3]: *** Pas de règle pour fabriquer la cible «
../../plugin/pango/libgvplugin_pango.la », nécessaire pour «
dot_builtins ». Arrêt.
make[3]: quittant le répertoire «
Dear colleagues,
Will there be a ppa version of 6.0 ?
Since I need to install sage on about 20 machines, the *.deb is nice
But I have time
t.d.
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Hello, all,
I am going to manipulate Legendre (P) polynomials.
So I do something like this:
sage: P.x=QQ[]
sage: #generate de first Lagrange polynomial
sage: s=[legendre_P(i,x) for i in [0..2]]
sage: print s
[1, x, 3/2*x^2 - 1/2]
sage: #now, look at the parents
sage: s[0].parent()
Integer Ring
Le 29/06/2013 14:21, Martin Albrecht a écrit :
Hi all,
do we have n-dimensional numerical integration in Sage? All I can find is 3D,
but what about higher dimensions?
Cheers,
Martin
MMhhh... I do not know any (free) library doing n-dimensional numerical
integration with n large. And so,
Hi,
Install fails with:
Error installing package scitools++
Before this I get:
Removing
spkg should be fixed, as far as I can see.
Regards,
Jan
Yes,
I apologize... it is a scitools problem...
yours
t.
On 22 June 2013 12:54, Thierry Dumont tdum...@math.univ-lyon1.fr
mailto:tdum...@math.univ-lyon1.fr wrote:
Hi,
Install fails
Le 22/02/2013 15:18, Piero a écrit :
Is there any support of bifurcation analysis in SAGE? Alternatively, are there
binding tools to AUTO or XPPAUT?
Many thanks
Not yet, as far as I know.
This would be great to integrate this in Sage!
t.d.
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Le 22/11/2012 08:53, Jori Mantysalo a écrit :
Getting back to this old question... Version 5.4. has been released. How
to set up ldap? Or some kind of external authentication, like CAS or AD?
Has anyone made this? I'm stuck with old errors (this time Failed to
load application: No module named
Trying:
sage -i graphviz...
I get:
mv -f .deps/no_demand_loading.Tpo .deps/no_demand_loading.Po
make[3]: *** Pas de règle pour fabriquer la cible «
../../plugin/pango/libgvplugin_pango.la », nécessaire pour «
dot_builtins ». Arrêt.
make[3]: quittant le répertoire «
Le 08/03/2012 14:44, Jori Mantysalo a écrit :
On Mon, 5 Mar 2012, P Purkayastha wrote:
It works here on vanilla sage-4.8, sage-4.8+new flask notebook+new
jmol,
and sage-5.0beta2+new flask notebook+new jmol with both opera-11.61 and
firefox-10.0.2 on Gentoo 64 bit. java is the 64bit variety
Hello,
We use sage 4.8
The following line:
W=WeylGroup(F4)
works in command line, BUT
do not work when evaluated in the Notebook:
Error message is:
Traceback (most recent call last):
File stdin, line 1, in module
File _sage_input_4.py, line 10, in module
exec
I apologize for my preceding e-mail (04/11); I recall that I got the
message:
sage -upgrade
...
Do you want to continue [y/N]? y
There are uncommitted changes in the Sage root repository. Aborting.
Actually, this was the first time I got this message (I have made at
least 5 upgrades in the
Hello,
sage -upgrade
...
Do you want to continue [y/N]? y
There are uncommitted changes in the Sage root repository. Aborting.
1) I did not change anything in the Sage repository since the
installation of 4.7.1, except the sage script in SAGE_ROOT.
I did not get this message at the
Dear sage-support,
Is there a possibility ti visualize a Picture in the notebook ?
For example: we read a .png image, and we would like to modify it, treat
it and so on (we know how to to this with sage); at the end visualize
the result in the notebook (we do not know how to do this...).
yours
For a small introduction to Sage, I want to show what is really called,
for a set of problems, depending on, say, the field we use:
Example:
from sage.misc.citation import get_systems
A=Matrix(RDF,[[1,3,2],[1,4,2],[0,5,2]])
B=vector(RDF,[1,2,3])
get_systems ('A.solve_left(B)')
['numpy',
Dear Colleagues,
Using 4.7, we got the following bug,... Sage-4.7 was obtained by
upgrading from source the last preceeding version.
Here is the gdb run.
Yours
t.d.
germoni@damysos:~$ sage -gdb
--
| Sage Version 4.7, Release
It seems that there is a problem with content.wuala.com.
sage -upgrade
Automatically selected server content.wuala.com
(http://content.wuala.com/contents/phatsphere/edoras/sage-mirror/).
Downloading packages from
One of my colleagues uses a Macintosh with a Japanese environment.
He cannot upgrade sage (4.6.1).Here is a transcription of what happens.
Any idea?
gcc version 4.2.1 (Apple Inc. build 5664)
abort: unknown encoding: x-mac-japanese, please
Why not compute in QQ? Sage is done for this...:
sage: s1=sum(10^(-q^2/1) for q in range(-1,1))
(wait some time...)
sage: s2=sum(10^(-k^2/1) for k in range(-2,2))
(drink a large cup of coffee)..
then:
sage: t=s1-s2
sage: float(t)
0.0
ok, let's try more precise:
sage:
Hello,
On our Sage server, we have a lot a students doing simple computer algebra.
Our version of Sage is 4.5.3 on Debian Lenny.
We have a lot of segfaults in maxima:
2329777.996283] maxima[26150]: segfault at 7fff13abfa30 ip 7fa21cac8921
sp 7fff13abfa30 error 6 in
Le 18/09/2010 16:31, KvS a écrit :
Hi again,
I hope you don't mind me bumping this thread one more time. I started
experimenting with trying a few things for fast arbitrary precision
computations using Cython. Above it was suggested to use MPFR
directly, so without the RealNumber wrapper, as
I want to patch sagenb (to add ldap identification). I did it some time
ago by modifying notebook.py, avatars.py in in a cloned verion of Sage.
Now that we have a separate package sagenb, what is the best way to
proceed ? I can download sagenb, untar it, make my modifications and then???
Or
Le 20/06/2010 16:14, Patrick ABOU BAKAR a écrit :
I know that SAGE contains its own installation of pretty much of all
the modules it depends on..
My assumption is that there is a table that holds the username and
password of the users as they sign up..
What SGBD is used for it? (SQLite,
As a marginal remark, PyDSTools use Radau code from Hairer and Wanner,
which a much more robust method than all what is included in GSL (and
Scipy). The tools for integrating ODEs available in Sage are far from
being the best available.
t.d.
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Le 04/06/2010 11:17, John Cremona a écrit :
Brilliant suggestion. I installed libncurses5-dev and then installing
lie worked. (And then I found your message, afterwards).
Here is an awkward fact: when I run our system-wide install (e.g. on
the server) the command optional_packages() fails
To compile Lie you must (or your systeme administrator) add some tools
on your machine:
-bison
-the ncurses lib.
On an Ubuntu machine, I installed (apt-get): libncurses5, libncursesw5 ,
ncurses-base ncurses-bin and bison. It will take 5 minutes to your
administrator. Then it will be ok.
t.d.
I have questions about RDF (and CDF) sparse matrices. How are they
implemented?
-for dense matrices, sage uses Scipy matrices and this is transparent.
-but, how are sparse matrices (RDF,CDF) implemented?
1) Are they Scipy matrices ?
2) if yes: there are different data structures for
Le 30/04/2010 18:54, Robert Bradshaw a écrit :
O
sage: m = matrix(RDF, 5, sparse=True)
sage: type(m)
type 'sage.matrix.matrix_generic_sparse.Matrix_generic_sparse'
So it's our completely generic sparse implementation, stored as a
dictionary of non-zero entries.
Le 16/04/2010 17:35, William Stein a écrit :
On Friday, April 16, 2010, kcrismankcris...@gmail.com wrote:
Has anyone ever seen this when importing worksheets?
Permission denied: '/home/notebook/sage_notebook/worksheets/kcrisman/2/
cells/37'
In this case, I saved something from my laptop
I want to use RDF linear algebra.
As far as i understand, operations are implemented using numpy/scipy.
But many things differ from a direct call to scipy modules; for example:
(computing the Singular Value Decomposition of a matrix):
sage: A=matrix(RDF,[[1,3,2],[1,2,3],[0,5,2],[1, 1, 1]])
Alec Mihailovs a écrit :
On Apr 9, 8:59 pm, William Stein wst...@gmail.com wrote:
A 5000x5000 matrix just isn't really that big, IMHO...
That's true - should work in just few seconds - I meant REALLY big
matrices - actually, sometimes such a thing should work faster even
for not that big
Rajeev a écrit :
Hi,
sage has gsl as one of the included packages, which is very good for
numerical solution of differential equations. have a look at examples
on the wikipage -
http://wiki.sagemath.org/interact/diffeq
'Vector Field with Runga-Kutta-Fehlberg' by Schilly is one of my
favorites. i
William Stein a écrit :
On Fri, Dec 18, 2009 at 11:53 PM, Thierry Dumont
tdum...@math.univ-lyon1.fr wrote:
Carlos Córdoba a écrit :
Hi,
I know this is not a general mathematical forum, but I hope you can help me.
I have this PDE:
\frac{dB}{dt} = F(x,y,z)B(x,y,z) - G(x,y,z)\nabla B(x,y,z
Carlos Córdoba a écrit :
Hi,
I know this is not a general mathematical forum, but I hope you can help me.
I have this PDE:
\frac{dB}{dt} = F(x,y,z)B(x,y,z) - G(x,y,z)\nabla B(x,y,z)
and I don't know how to solve it numerically. What would be the easiest
method to do it? It can be in
William Stein a écrit :
On Wed, Nov 11, 2009 at 6:22 PM, Kwankyu ekwan...@gmail.com wrote:
Hi,
I have a problem starting a sage server after, I think, upgrading to
Ubuntu 9.10 server edition. It just hangs at the point Generating a
2048 bit RSA private key... See the following transcript:
One of our Sage users want to make computations with Gap, from inside Sage.
So his commands are:
sage
gap.console()
then he can read his Gap program, start to run it, but the program
aborts by lack of memory.
Classically, he uses gap directly, by typing:
gap -o 4G (to get 4 Giga Bytes).
Is
William Stein a écrit :
On Mon, Sep 28, 2009 at 5:53 AM, Thierry Dumont
tdum...@math.univ-lyon1.fr wrote:
Trying to solve my problem:
THERE WAS AN ERROR LOADING THE SAGE LIBRARIES. Try starting Sage from
the command line to see what the error is
Make it so when the remote (worksheet
ma...@mendelu.cz a écrit :
On 26 zář, 15:27, Thierry Dumont tdum...@math.univ-lyon1.fr wrote:
... strange only for me I hope.
I have similar problem. As I undesrstand, if the user sage runs
program sage and user sageuser is in server_pool, then .sage directory
should be writeable
Super..
Question: can we have users of the pool on different machines now? (the
directory beiing shared by nfs), and having the same groups on the
different machines?
William Stein a écrit :
On Tue, Sep 29, 2009 at 1:00 PM, ma...@mendelu.cz ma...@mendelu.cz wrote:
On 26 zář, 15:27, Thierry
William Stein a écrit :
2009/9/29 Thierry Dumont tdum...@math.univ-lyon1.fr:
Super..
Question: can we have users of the pool on different machines now? (the
directory beiing shared by nfs), and having the same groups on the
different machines?
In theory, yes, if you are willing to edit
Koch Peer-Joachim a écrit :
Hi,
we are running a sage notebook for the members of our institute.
In the moment the users can create an account login and use
the notebook.
One user has forgotten his password. How can I change
the passsword of the user ?
The notebook is started with
nohup
Trying to solve my problem:
THERE WAS AN ERROR LOADING THE SAGE LIBRARIES. Try starting Sage from
the command line to see what the error is
when launching the notebook with a server_pool, I added manually the path:
$SAGE_ROOT/local/lib
(with $SAGE_ROOT hard coded).
This changed nothing.
Since my last mail... I changed one or two things:
I create a directory, exactly like http://wiki.sagemath.org/SageVirtualBox
(this should not be specific to VBox).
I add my 2 users sage and sage1 to a group sageusers.
chmod g+w nbfiles
I create the notebook.py file like this:
from sage.all
, md5, sys
No remote temporary directory (option server_tmpdir) specified, using
/tmp/ on sa...@localhost
LOOKATPATH
... and nothing. The LD_LIBRARY_PATH is *empty*, and thus also
SAGE_ORIG_LD_LIBRARY_PATH.
Is it the problem?
Yours
t.d.
Thierry Dumont a écrit :
Since my last mail... I changed
Some days (and weeks) ago Serge Salamanka posted a message about the
message error loading the sage libraries he got when trying to use a
pool of servers. I cannot find any answer in the sage-support archive.
Is it fixed ? I have exactly the same problem on my machine (Debian
Lenny, AMD 64).
Hi,
something I do not understand.
0) I have 2 users: sage and sage1 (on the same machine).
1) Logged in as sage, I can do ssh sa...@localhost some_command
without passwd (authorized_keys2 in ~sage1/.ssh)
2) Now I launch the notebook:
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
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
I need to make changes to avatars.py
I find 3 versions of this script in the sage tree:
./devel/sage-main/build/lib.linux-x86_64-2.5/sage/server/notebook/avatars.py
./devel/sage-main/build/sage/server/notebook/avatars.py
./devel/sage-main/sage/server/notebook/avatars.py
(the same is true for
?
Do tou mean:
sage --clone nameofclone= creates a copy
the we make changes in nameofclone
and sage -br tranfers the changes in the main branch ?
Yours
t.
On Fri, Mar 27, 2009 at 1:25 AM, Thierry Dumont
tdum...@math.univ-lyon1.fr wrote:
I need to make changes to avatars.py
I find 3 versions
As I want to modify Sage (introducing ldap identification), I need to
modify some parts of Sage, mainly avatars.py.
It is not yet working correctly :-( and for debugging I put some
print instructions in the code; for example in the class FailedLogin
I put a print statement in __init__.
I
meitnik a écrit :
Hi all,
I am legally blind, legally deaf, some limited finger mobility, and
some learning disabilities too (all from Rubella). I enjoy mathematics
and programming but due to my limited income Mathematica is just out
of my reach even for the Home edition. A friend told me
Hello,
As (maybe) you remember I starting the installation of my university
wide Sage server.
One idea is to launch 2 Sage servers on each machine (one machine has
32Gb ram and 4x2 cores). So: I create a sage user, in /home/sage I
create two directories.
In the first one I do:
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