Re: [sage-support] cypari fails to build on Ubuntu 18.04

On 2019-06-18 15:16, Kevin Horton wrote: 2. It is quite possible low memory is the issue, as I'm trying to install it on a Linode virtual server with 1 GB RAM. Yes, that's probably not enough for a big compilation. I would recommend at least 4GB of RAM, but you may get away with 2GB... at leas

Re: [sage-support] cypari fails to build on Ubuntu 18.04

Internal compiler error typically means one of the following: - Running out of memory during compilation - Buggy compiler - Hardware problem So the following questions need to be answered: 1. Is the problem reproducible? What happens when you try again? 2. Is this a machine with little memory o

Re: [sage-support] Re: Computing a Groebner Basis (singular algorithm) raises an error

On 2019-05-27 16:11, Tracy Hall wrote: in particular it seems to have undefined behavior in subsequent calls after it has been interrupted by alarm(). This is simply a fact of life and not really considered to be a bug. You should not rely on the fact that interruptions (using either CTRL-C or

Re: [sage-support] I absolutely dont know why but i am getting an error.

On 2019-04-17 09:32, Oliver Thiel wrote: Hello, I absolutely dont know why but i am getting an error. What did you do? What happened *exactly*? See also https://www.chiark.greenend.org.uk/~sgtatham/bugs.html -- You received this message because you are subscribed to the Google Groups "sage-

Re: [sage-support] Interface to 4ti2

On 2019-03-20 05:21, 'benyamin alizade' via sage-support wrote: When I run |sage -i 4ti2, it returns that -i is an unknown option for sage. What happens *exactly*? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group

Re: [sage-support] A case of immaculate conception...

On 2019-03-19 12:52, Emmanuel Charpentier wrote: Defining a symbolic function seems to declare its arguments. I tend to think that everything on the left of the '=' sign in an assignment is stuff that is assigned to. So (a, b, c) = range(3) assigns to a, b and c. R. = ZZ[] assigns to

Re: [sage-support] much memory is used...

On 2018-10-09 12:00, Dima Pasechnik wrote: Well, primitive, as opposed to added by Sage. E.g. I suppose one cannot use it for RDF. If you really want to get elements of RDF, you could use a Sage vector instead. -- You received this message because you are subscribed to the Google Groups "s

Re: [sage-support] much memory is used...

On 2018-10-08 14:28, Dima Pasechnik wrote: Can you use array.array on anything that's not a primitive Python type? I don't know what you mean with "primitive Python type". Anyway, it supports various kinds of basic C types (like double for example). Docs here: https://docs.python.org/2/libr

Re: [sage-support] much memory is used...

On 2018-10-08 13:19, Thierry Dumont wrote: So my list should use less than 1gb, if it phi was a C array. But it's not a C array. There is overhead for Python garbage collection, the Sage parent, the Cython virtual method table... If you really want a C array, use array.array or numpy. -- Yo

Re: [sage-support] Sage crashes on start

On 2018-07-18 05:58, 'Naturelover' via sage-support wrote: I just installed SageMath 7.6 Why such an old version? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email

Re: [sage-support] Re: building documentation: says I should use a sage shell, but i am

On 2018-06-18 04:22, Matthew Lancellotti wrote: I am able to get around the first error by commenting out the try catch loop in conf.py: Which conf.py file are you talking about? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe

Re: [sage-support] Re: building documentation: says I should use a sage shell, but i am

On 2018-06-18 05:54, Matthew Lancellotti wrote: sage-7.6-Ubuntu_14.04-x86_64.tar.bz2 Do you have a good reason to use an outdated version of Sage? Version 8.2 has been released. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe

Re: [sage-support] PARI/GP error in wrapping custom-defined PARI functions in Sage using the command gp.set()

On 2018-06-18 09:50, am...@ma.iitr.ac.in wrote: I have a library in PARI/GP and since Sage also supports the GP calculator I have been trying to shift my library using gp.set() and gp.get() commands. So far all functions are working but I got a PARI/GP error while implementing this function in Sa

Re: [sage-support] Re: PariError: bug in LLL_cmbf [no factor], please report

Thanks for checking. In the mean time, I guess the problem might be related to the fact that I'm using a non-default value for primelimit in GP (100 instead of 50). But if you say that the problem is fixed by the PARI upgrade, I consider this issue closed. -- You received this messag

Re: [sage-support] Re: PariError: bug in LLL_cmbf [no factor], please report

On 2018-06-13 10:25, John Cremona wrote: THanks for looking into this Jeroen (I hoped you would). The file bug.gp <http://bug.gp> you attached causes an error in the latest gp (version 2.10.0), after increasing parisizemax I get the same error message. What are the *exact step

Re: [sage-support] Re: PariError: bug in LLL_cmbf [no factor], please report

I haven't managed to reproduce it in GP, I have no idea why. Typically, it's not so hard to translate a Sage bug like this to a PARI/GP bug. It must be something rather subtle. I'll try again tomorrow. I did manage to reproduce it with the PARI-in-Sage by running the attached GP script in Sage

Re: [sage-support] Upgrade to 8.2 hangs at ncurses

On 2018-05-10 19:38, Robert Gross wrote: I have aliased cp to "cp -i" and "mv" to "mv -i". What do you mean this *exactly*? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send

Re: [sage-support] Cython in jupyter notebook

On 2018-04-15 16:08, Simon King wrote: Hi! The following cython code compiles fine in SageMath command line version and it *used* to compile fine in the jupyter notebook one year ago: Fix at https://trac.sagemath.org/ticket/25177 -- You received this message because you are subscribed to the

Re: [sage-support] ipywidgets and sage

On 2018-03-21 11:49, Marcin Kostur wrote: btw, will it be sufficient when major version number will match? Probably, but I cannot say for sure. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving

Re: [sage-support] ipywidgets and sage

On 2018-03-21 10:05, Marcin Kostur wrote: Hi, How to get working ipywidgets *or @interact" when using sagemath kernel in external jupyter/jupyterlab? The problem is the version of ipywidgets in Sage must match with the version in the external jupyter. If you are using Sage 8.1, this is ipywi

Re: [sage-support] Issue compiling Cython code that uses Sage

On 2018-03-15 13:22, Marc Mezzarobba wrote: but the variant below doesn't? That's certainly a bug: https://trac.sagemath.org/ticket/24987 -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails

Re: [sage-support] Has Big-Endian support been deprecated yet?

On 2018-03-13 20:33, Kim Walisch wrote: primecount currently only supports little-endian CPUs. That sounds very fishy to me. What are you doing in your code that it supports only little-endian? If your code only works for a particular endianness, it probably means that you are nasty stuff w

Re: [sage-support] Re: Error building Sage 8.1 on Ubuntu 16.04 :make: *** [all] Error

Ticket: https://trac.sagemath.org/ticket/24953 -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group,

Re: [sage-support] Re: Error building Sage 8.1 on Ubuntu 16.04 :make: *** [all] Error

What is /media/kiran/DRIVE1? If it's a filesystem which does not support Unix permissions, then it seems that Sage does not support that. I consider that a bug though... -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this

Re: [sage-support] Sage Crash Report

On 2018-03-10 12:29, Alasdair McAndrew wrote: As created just now. Enjoy! How did you get that SageMath installation on your computer? Was it a binary install, a source install, an upgrade from an earlier version? In any case, I would suggest to simply reinstall Sage. -- You received this

Re: [sage-support] avoiding startup time cost with multiple invocations

On 2018-01-10 19:27, Vincent Delecroix wrote: Have a look at https://docs.python.org/2/extending/embedding.html Even simpler would be to use Cython to interface between C++ and Python/Sage. -- You received this message because you are subscribed to the Google Groups "sage-support" grou

Re: [sage-support] LattE failed to build

There seems to be a problem with your networking setup. Does this help: https://superuser.com/questions/879731/osx-ssh-could-not-resolve-hostname-nodename-nor-servname-provided-or-not-kno -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsub

Re: [sage-support] LattE failed to build

Logs please -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@goog

Re: [sage-support] Re: Map from S.base() to S?

Thanks! On 2017-11-27 10:14, Simon King wrote: Hi Jeroen, On 2017-11-27, Jeroen Demeyer wrote: I might be missing something, but is there a generic recipe in Sage to get a map from S.base() to S? I want something which works in as much generality as possible for any structure S. I feel like

[sage-support] Map from S.base() to S?

I might be missing something, but is there a generic recipe in Sage to get a map from S.base() to S? I want something which works in as much generality as possible for any structure S. I feel like that should exist but I couldn't find it. -- You received this message because you are subscribed

Re: [sage-support] Sage Crash Report

On 2017-10-26 10:50, Dima Pasechnik wrote: from your log: ImportError: libgfortran.so.3: cannot open shared object file: No such file or directory installing libfortran3 will fix the problem. Or waiting for Sage 8.1 since that problem has been fixed in the mean time. -- You received this

Re: [sage-support] Sage Crash Report

This is a known problem which will be fixed for Sage 8.1 For now, you have to install gfortran from your Fedora distribution. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send

Re: [sage-support] Sage Crash Support

On 2017-10-22 21:14, Alvaro Ezequiel wrote: I installed Sage correctly. When I'm going to execute it this happens and crash... What happens? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving ema

Re: [sage-support] Sage Crash Report

On 2017-10-22 21:01, Jan Groenewald wrote: If you can email this file to the developers ...provided with information on how you installed Sage, what OS you are using, which version of Sage you are running, what command you ran when you got this error. Too many people think that a "Crash Repor

Re: [sage-support] Sage crash on first run - can't find the fortran compiler

This should be fixed in the next version of Sage: https://github.com/sagemath/binary-pkg/pull/12 -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+un

Re: [sage-support] Troubleshooting standalone scripting issues (seeking knowledge about interpreter and preparser)

Confirmed, this is a bug in the tutorial. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send

Re: [sage-support] Sage 8.0.beta12 Crash Report

This is a customized version of Sage. For example, the file src/sage/dynamics/complex_dynamics/mandel_julia.py (which is causing the problems) does not exist in the official SageMath. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscr

Re: [sage-support] Trouble building development version

On 2017-06-15 17:48, David Loeffler wrote: I just downloaded the sage-8.0.beta10 tarball, unpacked it, and typed 'make'. After a short interval, I got the error message below. What am I doing wrong? Do you have any unusual environment variables set? -- You received this message because you are

Re: [sage-support] Re: Problem compiling Sage 7.6 from source

On 2017-06-01 02:13, Bernardo Feijoo wrote: Then I tried to install again and the installation stopped with an error about linbox. I just started it again and it seems to be progressing past linbox, so I think it's making progress. I'm just gonna keep trying. This suggests a hardware problem of

Re: [sage-support] How to use Sphinx to create documentation for a project that uses Sage?

On 2017-05-31 12:42, Paul Leopardi wrote: On Wednesday, 31 May 2017 19:39:32 UTC+10, Jeroen Demeyer wrote: I think you need to import sage.all first, before importing anything else from sage. Thanks, in which file do you mean, every Python file that uses Sage, or some specific file

Re: [sage-support] How to use Sphinx to create documentation for a project that uses Sage?

On 2017-05-31 12:55, Paul Leopardi wrote: Thanks, I think I figured out what you mean. I updated conf.py to contain the following: That's not what I meant since I said that the issues you are having are unrelated to Sphinx. So by "fixing" it in Sphinx you are working around the problem, not a

Re: [sage-support] How to use Sphinx to create documentation for a project that uses Sage?

I think you need to import sage.all first, before importing anything else from sage. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@go

Re: [sage-support] How to use Sphinx to create documentation for a project that uses Sage?

On 2017-05-30 15:24, Paul Leopardi wrote: Do you understand the problem yet, or do I need to explain it again in greater detail? I understand the problem, but you are focusing too much on the detail of Sphinx. The problem is unrelated to Sphinx; it has to do with your Sage/Python installation

Re: [sage-support] How to use Sphinx to create documentation for a project that uses Sage?

On 2017-05-28 14:33, Paul Leopardi wrote: Hello, I am trying to create HTML documentation for my Boolean-Cayley-graphs project ( https://github.com/penguian/Boolean-Cayley-graphs ) that uses Sage. If I try to just use Sphinx, following the instructions at https://codeandchaos.wordpress.com/2012/0

Re: [sage-support] Problem compiling Sage 7.6 from source

Is the problem reproducible, i.e. does it happen again if you rebuild Sage? Which compiler are you using? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-s

Re: [sage-support] complex numbers printing real part + imaginary part

On 2017-04-11 18:25, Pedro Cruz wrote: Hello, sage is printing b*I + a and we want to see a + b * I Do you have a complete example? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from

Re: [sage-support] sage-7.6 build fails on Fedora-21

On 2017-03-28 06:34, Jose Gaetan Pierre wrote: sage-7.6 fails on fedora-21 (7.4 built ok). error occurred during dochtml build of graphs. Complete log file please. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group

Re: [sage-support] Sage Crash Report

On 2017-03-19 14:08, Kam wrote: Attached is a report about a crash that happened here in Chicago... enjoy the read! :) Don't press CTRL-C when Sage is starting up and all should be fine. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To uns

Re: [sage-support] Doubt related to commits in trac

On 2017-03-10 09:39, Ashutosh Ahelleya wrote: Heyy, Thanks and yes I am using git trac. Maybe you forgot to run $ git trac checkout 22312 when changing tickets. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group

Re: [sage-support] Doubt related to commits in trac

On 2017-03-10 05:57, Ashutosh Ahelleya wrote: Hello, Yesterday, I fixed an issue #22312 , where I just changed the documentation required and commit the changes to push them. After I changed the Author to "Ashutosh Ahelleya" (i.e. my name), in the comments

Re: [sage-support] Running sage scripts noninteractively (possible bug)

On 2017-03-07 10:19, Jeroen Demeyer wrote: On 2017-03-06 23:58, Watson Ladd wrote: Or should I just change to load instead of attach? The problem is limited to load(), so that would work. Sorry: I meant to say: the problem is limited to attach(), so load() should work. -- You received

Re: [sage-support] Running sage scripts noninteractively (possible bug)

On 2017-03-06 23:58, Watson Ladd wrote: Or should I just change to load instead of attach? The problem is limited to load(), so that would work. Thinking about it, actually attach() only makes sense in interactive sessions. So I see no reason to use it in scripts. -- You received this messa

Re: [sage-support] Running sage scripts noninteractively (possible bug)

Confirmed: https://trac.sagemath.org/ticket/22527 -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this grou

Re: [sage-support] Running sage scripts noninteractively (possible bug)

We need more details. In particular it would be useful to attach a minimal testcase with the problematic .sage files. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an emai

Re: [sage-support] Silly Cython question

On 2017-02-21 22:02, Watson Ladd wrote: I am having trouble figuring out which imports I need to get the right names to appear Use the import_statements() function to determine which import statements you need. There shouldn't be a difference between Python and Cython regarding import stateme

[sage-support] Example GAP computation

Can somebody please provide some example "hello-world" GAP computation? Just something which can be used to showcase the abilities of GAP but which takes at most a few seconds to run. I need this to make a "Demo" GAP notebook for OpenDreamKit. -- You received this message because you are subsc

Re: [sage-support] Compilation of 7.6.beta1 on Ubuntu 16-10

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 SAGE_PYTHON3 environment variable? Could you please send your logs/install.log fo

Re: [sage-support] Compilation of 7.6.beta1 on Ubuntu 16-10

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. -- You received this message because you are subscribed to the Google Groups "sage-support"

Re: [sage-support] Cython problem

On 2017-01-25 17:07, jordan.h.e...@gmail.com wrote: Hello, I've been trying to use cython in Jupyter and it fails to compile. My version of Sage is 7.3. It was installe from the ppa. I run Linux Mint. I guess that you are missing a compiler toolchain. In your case, the system header files lik

Re: [sage-support] Sage needing write access to itself

Also: please describe *exactly* what goes wrong ("this doesn't work" is not precise enough to understand the problem). -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an ema

Re: [sage-support] Sage needing write access to itself

Exactly how did you build/install Sage? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send em

Re: [sage-support] Re: Sage cannot find gcc on OS X

On 2017-01-10 12:54, Michael Frey wrote: Which one is sage looking for? The one in /usr/include -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+u

Re: [sage-support] "Precision too low for generators, not given"

On 2017-01-05 13:17, Erick Knight wrote: Thanks for both of your replies. Just to double check so that I don't have any misunderstanding, PARI is correctly determining whether my ideal is principal, and if it is, it is attempting to produce a generator. It may fail at that, but, since I never a

Re: [sage-support] "Precision too low for generators, not given"

Sorry, I was wrong. I actually looked at the PARI source code this time and the warning comes from the bnfisprincipal() function to determine the class of a given ideal in the class group (so, in particular, it can be used to check whether an ideal is principal). This function can also compute

Re: [sage-support] "Precision too low for generators, not given"

I think it means that PARI didn't compute the unit group for certain number fields. Since you don't need the unit group, I see no issue. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails fr

Re: [sage-support] Re: Something like Mathematica's `Interact`?

On 2016-12-07 04:45, William Stein wrote: You can also track progress on porting interact to Jupyter at [3], though it looks like nobody has touched that in several months. For the record, the main obstacle here is the release of ipywidgets 6 (currently in beta!). I don't want to rely on git m

Re: [sage-support] Re: How to limit heavy computations

On 2016-11-27 14:10, Jori Mäntysalo wrote: In general it is not easy to limit resource usage in Linux. It's not easy, that's true. But that's independent of the fact that ulimit within SageNB simply doesn't work due to some SageNB bug. I have known about this bug for years but never bothered

Re: [sage-support] Sage Crash Report

Details please... How did you install Sage? -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, sen

Re: [sage-support] Re: Unable to launch SageMath 7.4 on macOS Sierra (10.12.1)

On 2016-11-08 23:01, quark67000 wrote: It seems that on 7.4, SageMath has a bad signals.sofile on the Mac version. No, this problem almost certainly has nothing to do with signals.so As Volker said, it is https://trac.sagemath.org/ticket/21772 -- You received this message because you are subs

Re: [sage-support] How could I import igraph or python-igraph in the python bundled with sage?

On 2016-11-07 13:52, Eden Harder wrote: I installed sagemath with hombrew on MacOS. And later I use `sage -i python_igraph` to install python_igraph. After that, I found that 1. I cannot import python_igraph in sage The correct command is: import igraph -- You received this message because y

[sage-support] Re: SSL module not available

In fact a solution seems to be to use pyopenssl instead: ./sage -i pyopenssl ./sage -f python2 make ssl Hope this is canonical. Best, Jeroen On Friday, October 28, 2016 at 5:07:03 PM UTC+2, Jeroen Sijsling wrote: > > Hello, > > Recently I got an actual desktop for use in

[sage-support] SSL module not available

me/jrsijsling/Programs/sage-7.4/local/lib/python/ssl.py", line 97, in import _ssl # if we can't import it, let the error propagate ImportError: No module named _ssl Any ideas? Thanks in advance, Jeroen -- You received this message because you are subscribed to the Google Groups &qu

Re: [sage-support] Re: @interact command not working in Sage 7.3 & 7.4

On 2016-10-27 00:02, kcrisman wrote: That said, there are still some incompatibilities in interact syntax, the last I heard (Jason Grout said the jupyter people were working actively no that, though). In interact *syntax* or interact *functionality*? Of course, the interact functionality is qu

Re: [sage-support] QQbar coercion question

On 2016-10-24 17:54, Nils Bruin wrote: Pow is not *that* special. It is more special than you think. Currently, powering does not go through the coercion framework at all. So actions won't get looked up... Of course, this could be changed. However, the *default* implementation of all arithm

Re: [sage-support] @interact command not working in Sage 7.3 & 7.4

On 2016-10-23 19:03, ahauskne...@umassd.edu wrote: Hi the @interact command no longer seems to be working in Sage 7.3 and Sage 7.4 on an Mac Book Pro running El Capitan: Works for me on Sage 7.5.beta0. In fact I did some @interact developed recently and I never had a problem like that. Inter

Re: [sage-support] QQbar coercion question

On 2016-10-23 10:33, Vincent Delecroix wrote: In general, pow(a, b) should only depend on parent(a) and parent(b) and not the actual values of a and b. This is how behave all arithmetic operations. +1 I don't see it as a problem that 2^QQbar(1) fails. -- You received this message because you

Re: [sage-support] QQbar coercion question

On 2016-10-22 10:37, Ralf Stephan wrote: | sage:2*(QQbar(1)) 2 sage:2^(QQbar(1)) ... TypeError:nocanonical coercion fromAlgebraicFieldto RationalField | Why does the one work, the other not? Multiplication uses coercion. Exponentiation does not use coercion, since that's usually not what you

Re: [sage-support] How to return an RDF (or CDF) value from a Cython function ?

On 2016-10-17 15:10, Emmanuel Charpentier wrote: Thank you Vincent. this is much clearer. It seems that I have some things left to understand about the Sage class and types hierarchies. There is a difference between a type and a parent. A parent is a mathematical object. It is the mathematica

Re: [sage-support] How to return an RDF (or CDF) value from a Cython function ?

On 2016-10-17 09:53, Emmanuel Charpentier wrote: I need to use a fast random (complex) number generatot. The following : sage: %%cython : from sage.misc.prandom import random : cpdef complex crand(double x): : return x*random()+x*1j*random() is about 77 times faster than its P

Re: [sage-support] Build of SageMath version to 7.4.rc1 failed

On 2016-10-13 02:21, Amritanshu Prasad wrote: I switched from master to develop and tried building with "make". I am running Ubuntu 14.04 with a 64-bit Intel i7-5600U processor This is known problem with a fix at https://trac.sagemath.org/ticket/21689 It should be fixed in Sage 7.4.rc2 (which

Re: [sage-support] How to catch exceptional values (+ in plot3d, one exceptional point ruins the whole plot).

On 2016-10-11 22:07, William Stein wrote: try: return abs(gamma(x+I*y)) except: return 0 That is almost never what you want, since this will also catch things like KeyboardInterrupt. Better use try: ... except Exception: ... -- You received this message because you are sub

Re: [sage-support] Re: Element vs UniqueRepresentation

On 2016-10-10 17:31, Simon King wrote: I just tested that in the current Sage development version my proof-of-concept would still work. But still Python 2, right? And looking at _PyType_CalculateMetaclass, I don't see why it wouldn't work in Python3. Maybe I'm misunderstanding you, but what

Re: [sage-support] Re: Element vs UniqueRepresentation

of B1 can decide the metaclass of X). In Python 3, the metaclass of X is resolved by a hard-coded algorithm _PyType_CalculateMetaclass and then that metaclass constructs the class X. Of course, all this is completely undocumented. Jeroen. -- You received this message because you are subscribed to the

Re: [sage-support] Element vs UniqueRepresentation

Try this: sage: from sage.misc.inherit_comparison import InheritComparisonClasscallMetaclass sage: class A(Element, UniqueRepresentation): : __metaclass__ = InheritComparisonClasscallMetaclass -- You received this message because you are subscribed to the Google Groups "sage-support"

Re: [sage-support] huge virtual memory size when launching 7.3

On 2016-09-21 16:19, Jonathan Bober wrote: I moved discussion to sage-devel, but wanted to add for anyone who comes across this and has problems: my simple temporary workaround is to change the line paristack_setsize(size, mem.virtual_memory_limit() // 4) to paristack_setsize(size, min(mem.vir

Re: [sage-support] FYI : ipywidgets allows (sort of) interactive Sage graphs in Jupyter notebook.

On 2016-09-20 22:09, Emmanuel Charpentier wrote: May I ask why ? (Just curious, no hostility whatsoever implied...). Because those packages are installed and the nbextension is enabled in Sage by default: https://trac.sagemath.org/ticket/21256 -- You received this message because you are sub

Re: [sage-support] FYI : ipywidgets allows (sort of) interactive Sage graphs in Jupyter notebook.

On 2016-09-20 16:12, Emmanuel Charpentier wrote: sage -pip install ipywidgets echo "jupyter nbextension enable --py --sys-prefix widgetsnbextension" | sage -sh In recent Sage betas, the above should not be needed. -- You received this message because you are subscribed to the Google Groups "

Re: [sage-support] huge virtual memory size when launching 7.3

On 2016-09-20 12:54, Jonathan Bober wrote: From reading what you've sent, I guess that what you have in mind is calling mmap with PROT_NONE and then calling mprotect() to change that to read/write whenever growing the stack? That seems like it might be a reasonable thing to do (though I'm only b

Re: [sage-support] huge virtual memory size when launching 7.3

After spending some time reading on the subject, I think I might have a solution to this "problem". It involves calling mmap() with PROT_NONE, which will require a patch to upstream PARI. However, before implementing this, I would like a *strong commitment* from somebody to review my patch whe

Re: [sage-support] Re: huge virtual memory size when launching 7.3

On 2016-09-19 19:58, Jeroen Demeyer wrote: * https://lwn.net/Articles/627557/ This last page indicates that one should use PROT_NONE to work around the issue you are having. Note this nice quote: > Sadly, the commit charge implications of MAP_NORESERVE are documented but silently bro

Re: [sage-support] Re: huge virtual memory size when launching 7.3

On 2016-09-19 14:04, Jonathan Bober wrote: With overcommit_memory set to 2, I'm not sure that there is a right thing to do. If I'm the only person in the world with this problem, then I should keep my mouth shut and get with the times, but I don't think this setup is so unreasonable. Some point

Re: [sage-support] Re: huge virtual memory size when launching 7.3

On 2016-09-19 19:01, William Stein wrote: We should revert whatever trac ticket did this The first version of this is from https://trac.sagemath.org/ticket/19883 or at least make it an option to not allocate such a large address space. That's easy to do. How would you see the user interface

Re: [sage-support] Re: huge virtual memory size when launching 7.3

here exactly is this allocation coming from? Is it a default PARI setting, or does it come from the way that Sage uses PARI? It is because of the way how Sage uses PARI. I mean, to whom should I address my "hate mail"? :) That would be me... Jeroen. PS: The Sage <-> GAP interfa

Re: [sage-support] Re: huge virtual memory size when launching 7.3

On 2016-09-19 13:02, Jonathan Bober wrote: If I ulimit -v 8 GB, say, (which is 512/64), and the PARI allocater immediately grabs 2 GB of the virtual address space for itself, then that seems like it leaves only 6 GB for malloc/sage_malloc/whatever else, which would be effectively limiting the phy

Re: [sage-support] Re: huge virtual memory size when launching 7.3

he Linux overcommit thing does use that value (which is surprising to me, I never really understood how this overcommit stuff works). Jeroen. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop rec

Re: [sage-support] Re: huge virtual memory size when launching 7.3

Why don't you use ulimit -v to limit the per-process available memory? That would make sense when starting lots of processes even without the PARI non-issue. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and st

Re: [sage-support] Interface to lie broken in sage 7.3?

The *real* underlying problem is of course that LiE doesn't come with a build/install system, which makes such strange steps necessary. This is also the (only?) reason why this is an experimental (instead of optional) package. -- You received this message because you are subscribed to the Goog

Re: [sage-support] Re: huge virtual memory size when launching 7.3

On 2016-08-31 08:57, Thierry Dumont wrote: On machine 2, sage stating process (as mesured with top) uses about 39GB (no more...) out of 153.79 available. It doesn't actually "use" that memory. It is reserved virtual memory but it does not take up physical memory or swap space. -- You receive

Re: [sage-support] Re: huge virtual memory size when launching 7.3

On 2016-08-30 20:26, leif wrote: this makes the usage of 'ulimit -v' nearly impossible I don't see why. You can still use 'ulimit -v'. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails fr

Re: [sage-support] Dividing a matrix by integer one returns a matrix over rational field

There is a general philosophy in Sage that the *parent* of the output of an operation should only depend on the *parent* of the inputs. So, because 5/2 is a Rational, also 5/1 should be a Rational. -- You received this message because you are subscribed to the Google Groups "sage-support" grou

  1   2   3   4   >