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General performance updates ::
The following are lists some performance improvements in Maya 2008.
Operation:
Significant performance improvements
Setting keys when ghosting is turned on for any node in the hierarchy is much faster for hierarchies involving thousands of transforms.
Poly reduce caching is new for Maya 2008 and makes poly reduce faster. See Poly Reduce Caching in this section.
The performance of the select/clear operation on a large number of components when the Graph Editor or Component Editor is open has been significantly improved.
Improved performance with translating/exporting instance objects to mental ray.
Improved playback speed of wrap deformations when using the new Exclusive bind Wrap deformer option.
Noticeable performance improvements
Optimized Fluid Effects Turbulence evaluation.
Improved performance with the start up of IPR for mental ray for Maya rendering.
Playback of large numbers of hidden animated objects has been improved.
Improved performance when adding polygonal influence objects.
nCloth caches playback at a faster rate. Their playback speed is now similar to the playback of geometry caches.
Poly smooth is faster.
Maya Python API (OpenMaya) bindings have been updated to use SWIG 1.3.31. This reduces overhead of Python bindings significantly.
Improved startup time on Mac OS X, particularly on PowerPC machines.
Threading based changes (multiple CPUs)
Performance improvements vary based on configuration (i.e., number of CPUs/cores)
Fluid Effects Turbulence now supports threading.
Poly reduce setup has been multithreaded.
More threading of Fluids solver.
New threading library (TBB) enabled.
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