[sage-support] Re: Can't find my way around Sage source code

2007-12-27 Thread bill.p
Thanks for the help so far. I've been able to make some minor changes to the code and checked the behaviour. I'm still a bit stuck on how it all ties together. I have added a new routine to the C++ code, but so far I've been unable to trace how the existing code is invoked from the Python code.

[sage-support] Pexpect: pty.fork() failed: out of pty devices

2007-12-27 Thread Paul Zimmermann
Hi, I got the error in subject while trying the new ECM().one_curve() command in sage-2.9. The problem might be due to the fact that I perform thousands of calls to ECM().one_curve(), and maybe pexpect does not correctly frees pty devices. The problem can be reproduced with: $ sage

[sage-support] Re: [sage-newbie] Odd interactions in Sage Tutorial

2007-12-27 Thread David Joyner
I am working today and tomorrow on fixing all your typos and possibly adding a few more examples to the tutorial. Thanks very much for your reports. ++ On Dec 17, 2007 12:23 PM, bill purvis [EMAIL PROTECTED] wrote: Hi, I'm looking at the Sage Tutorial, file

[sage-support] sage-2.9.1.1 build problem

2007-12-27 Thread Kate Minola
When I build sage-2.9.1.1 from source on the architectures of interest to me, I get an error when building mpfi-1.3.4-cvs20071125.p2 gcc -fPIC -o test_mpfi test_mpfi.o ../src/.libs/libmpfi.a /home/kate/sage/sage-2.9.1.1-x86_64-Linux/local/lib/libmpfr.a -lgmp

[sage-support] Re: sage-2.9.1.1 build problem

2007-12-27 Thread mabshoff
On Dec 27, 4:39 pm, Kate Minola [EMAIL PROTECTED] wrote: Hi Kate, When I build sage-2.9.1.1 from source on the architectures of interest to me, I get an error when building mpfi-1.3.4-cvs20071125.p2 gcc -fPIC -o test_mpfi test_mpfi.o ../src/.libs/libmpfi.a

[sage-support] Symbolic computation is slow

2007-12-27 Thread pgdoyle
I'm having problems doing symbolic computations in Sage. Calls to rational_simplify() seem to take about .2 seconds each. Working directly in Maxima is about 100 times faster. Mathematica is something like 500 times faster. In Sage, where does the time go? Is there something I can do right

[sage-support] Re: Symbolic computation is slow

2007-12-27 Thread Mike Hansen
Hello, The reason why the symbolic stuff in Sage is slow is that it uses a psuedo-tty interface to talk to Maxima. There is a lot of overhead with this due to waiting, synchronization, parsing the string output, etc. One way to get the symbolic stuff to be faster is to make using Sympy since

[sage-support] Re: Symbolic computation is slow

2007-12-27 Thread Ondrej Certik
On Dec 27, 9:57 pm, Mike Hansen [EMAIL PROTECTED] wrote: Hello, The reason why the symbolic stuff in Sage is slow is that it uses a psuedo-tty interface to talk to Maxima. There is a lot of overhead with this due to waiting, synchronization, parsing the string output, etc. One way to

[sage-support] hg_doc question

2007-12-27 Thread David Joyner
Hi: Suppose you follow the instructions in the programming manual to edit one of the latex doc files, such as prog,tex, const.tex, tut.tex, etc. http://www.sagemath.org/doc/html/prog/node31.html Roughly, the steps are sage: hg_doc.pull() (edit the file, say devel/doc/prog.tex) sage: