Sage

Sage is a free open-source mathematics software system licensed under the GPL.

Seit dem 16.05.2014 steht "Sage" auch im Pool unter Ubuntu 14.04 zur Verfügung. Damit steht jedem einzelnen Nutzer eine eigene Quadcore CPU und 4GiB Ram zur Verfügung :-)

Jeder User kann einfach einen lokalen Server starten:

~$ sage
┌────────────────────────────────────────────────────────────────────┐
│ Sage Version 6.2, Release Date: 2014-05-06                         │
│ Type "notebook()" for the browser-based notebook interface.        │
│ Type "help()" for help.                                            │
└────────────────────────────────────────────────────────────────────┘
     
sage: 
sage: notebook()
The notebook files are stored in: sage_notebook.sagenb
┌────────────────────────────────────────────────┐
│                                                │
│ Open your web browser to http://localhost:8080 │
│                                                │
└────────────────────────────────────────────────┘
Executing twistd  --pidfile="sage_notebook.sagenb/sagenb.pid" -ny "sage_notebook.sagenb/twistedconf.tac"
/usr/lib/sagemath/local/lib/python2.7/site-packages/Crypto/Util/number.py:57: PowmInsecureWarning: Not using mpz_powm_sec.  You should rebuild using libgmp >= 5 to avoid timing attack vulnerability.
  _warn("Not using mpz_powm_sec.  You should rebuild using libgmp >= 5 to avoid timing attack vulnerability.", PowmInsecureWarning)
2014-05-16 11:42:01+0200 [-] Log opened.
2014-05-16 11:42:01+0200 [-] twistd 13.2.0 (/usr/lib/sagemath/local/bin/python 2.7.5) starting up.
2014-05-16 11:42:01+0200 [-] reactor class: twisted.internet.epollreactor.EPollReactor.
2014-05-16 11:42:01+0200 [-] QuietSite starting on 8080
2014-05-16 11:42:01+0200 [-] Starting factory <__builtin__.QuietSite instance at 0x7b932d8>

(process:3733): GLib-CRITICAL **: g_slice_set_config: assertion 'sys_page_size == 0' failed



^C2014-05-16 11:45:02+0200 [-] Quitting all running worksheets...
2014-05-16 11:45:02+0200 [-] Saving notebook...
2014-05-16 11:45:02+0200 [-] Notebook cleanly saved.
2014-05-16 11:45:02+0200 [-] (TCP Port 8080 Closed)
2014-05-16 11:45:02+0200 [-] Stopping factory <__builtin__.QuietSite instance at 0x7b932d8>
2014-05-16 11:45:02+0200 [-] Main loop terminated.
2014-05-16 11:45:02+0200 [-] Server Shut Down.

Die beim starten von "Notebook()" auftretende Fehlermeldungen können ignoriert werden.

VM / Prof. Carsten Damm

• 03.09.2015: "sage" ersetzt durch "sage2" --> https://sage2.informatik.uni-goettingen.de

Links

• http://www.sagemath.org/de/