Twister Update

A minor change has been made to the test suite of Twister 2.0 so that it is compatible with SnapPy 1.5. The new version is available for download from the Twister 2.0 page

Twister 2.3.0

Twister has now been updated to version 2.3.0, changes include:

• Can be compiled as a Python extension
• Includes test suite
• More minor optimisations
• Cleaner code documentation

An interface for using Twister as a Python extension is also provided, which uses SnapPy. Running Twister as a Python extension is significantly faster than calling it as a standalone program from within Python.

Again all comments / feedback / bug reports welcomed.

See the Twister 2.0 page for more information / downloads.

Edit: A minor correction has been made to the Twister.py script (05/04/2012).

Twister 2.2.1

Twister has now been updated to version 2.2.1, changes include:

• Comment corrections
• Minor optimisations
• Minor bug fix for Solaris

This should be the final version of Twister and should be considered the ‘release candidate’ version.

Again all comments / feedback / bug reports welcomed.

See the Twister 2.0 page for more information / downloads.

Updated Census Generating Script

An update to the census generating script has been released. This new version includes:

• Minor optimisations
• Mapping class groups are now classes
• Further optimisations to the FSM class
• Works with relative file structure
• Completely rewritten problem word solver

Again all comments / feedback / bug reports are welcomed.

 

Twister 2.2.0

Twister has now been updated to version 2.2.0, changes include:

• Cusp genus is determined
• Canonical longitudes and meridians are installed on torus cusps
• Warnings can now be disabled with the -w option
• Optimisations can now be disabled with the -o option
• Cusp calculations can now be disabled with the -c option
• Debugging can be enabled with the -d option
• Error checking during gluings / ungluings

Again all comments / feedback / bug reports welcomed.

See the Twister 2.0 page for more information / downloads.

Twister 2.1.2

Twister has now been updated to version 2.1.2 which includes several optimisations to the parsing functions as well as more warnings and error checking for surface files and input.

Again all comments / feedback / bug reports welcomed.

See the Twister 2.0 page for more information / downloads.

 

Updated Census Generating Script

An update to the census generating script has been released. This new version includes:

• Significantly improved performance, primarily to the grow phase
• Ordering systems and FSMs are now classes
• The ability to use multiple processes
• The ability to bound the amount of RAM used
• The ability to cache manifold data for future operations (A large precomputed cache is also available for download giving a 19x speedup to the load phase)

Again all comments / feedback / bug reports are welcomed.