Specifies the number of sub-steps for each frame of your dynamics simulation. A value of 1 sets no oversampling. A value of greater than 1 causes Maya to oversample your dynamics simulations by the specified value. You can use any arbitrary value for Over Samples, as long as it is a positive integer. See dynGlobals.
You can often fix excessive dynamics behavior by increasing the oversampling of your dynamic calculations. Increasing oversampling slows down playback but increases the stability of your dynamics.
This determines whether Maya uses the cache. When you create a cache, this attribute is turned on automatically. Turn off Use Particle Disk Cache if you don’t want Maya to use the cache. For example, if you have made changes to certain emitter attributes that affect playback, such as speed or emitter type, turn off this attribute to see the effect of your changes. You can also recreate the cache.
This attribute lets you specify the directory where Maya looks for the cache. You can use this to choose which of several saved caches you want to use (see Play back different caches).
For example, you could cache one simulation to a directory named cache1 and another to a different directory called cache2. Enter the name of the Cache Directory you want Maya to use.
This directory is always relative to the Particles directory of your workspace. Don’t type an absolute path name.
Entering a name here does not re-create the cache—you do that using Solvers > Create Particle Disk Cache. Entering a name here also does not change the name of your existing cache directory. If you want to rename your directory, use your operating system.
Solver > Create Particle Disk Cache > 
also has a Cache Directory attribute. If you enter a value in the dynGlobalsAttribute Editor, that value becomes the default for the option box. Any different value that you enter in the option box is displayed in
the dynGlobals node.
These attributes record the minimum and maximum frames that were stored at the most recent caching operation. You can’t enter values here—these attributes are for your information only. Because they describe the most recent caching operation, if you choose a different cache directory using Cache Directory, the values in Min Frame Cached and Max Frame Cached won’t necessarily correspond to what is stored in that directory.
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