To create a testing environment, create a simulated cluster on a single node with all instances running on that node.
Sybase recommends that you configure each instance on a different node i.e. one node for each instance. However, for a testing environment, you can create a simulated cluster on a single node with all instances running on that node. For best performance make sure the number of engines in all instances running on a single node does not exceed the number of CPUs on that node.
The default setting for the runnable process search count parameter is '3' . Sybase recommends using this default setting. This can be set using the sp_configure stored procedure.