DEFAULT_NUM_TW_BATCHES
A constant for the default number of batches for TimeWeighted variables. This value is used in the calculation of the approximate batching interval if batching is turned on and there is a finite run length.
If the run length is finite, then the batch interval is approximated as follows:
t = length of replication - length of warm up n = getTimeWeightedStartingNumberOfBatches()
batching interval = t/n
DEFAULT_NUM_TW_BATCHES = 512.0