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<h1>Fastflow Tiered Execution Feature</h1>

<table>
	<th colspan=2>Fastflow Tiered Execution Example</th>
	<tr>
		<td>Description:</td>
		<td>This model demonstrates how to improve performance of fast running (sub-second) subflows
			by indicating that part of the model should use the component property "Use fast-flow execution tier"
			option to distribute part of the model to a single station for execution. In this model, the Six Sigma1
			component has its "Use fast-flow execution tier" option set to true.
			<br/><br/>
			In addition, it has its result option "Prevent saving results for any components descending from this component"
			set to true. This will reduce the amount of data that must be stored in the database, thus reducing the
			amount of data that must be transferred to the ACS and also further improve performance.
			<br/><br/>
			It is recommended that you select "fast-flow" execution only when all the components descending from that component
			are very fast running (sub-second). If any component has an expected execution time of more than a second,
			selecting the fastflow option may degrade performance. Using the fast-flow option is a trade-off between
			reducing traffic over the wire and taking full advantage of a distributed execution environment. When
			components execute in sub-second times, the overhead of distributing the work to mutliple Fiper stations
			is such that the overall performance is reduced. It is for this reason that we recommend only using this option
			for components whose entire subflow consists of fast running components.
		</td>
	</tr>
	<tr>
		<td>Model:</td>
		<td><a href="FastFlow.zmf">FastFlow.zmf</a></td>
	</tr>
	<tr>
		<td>Illustrated components:</td>
		<td>Six Sigma, Calculator</td>
	</tr>
	<tr>
		<td>Other illustrated features:</td>
		<td>No-Save descendent component parameters</td>
	</tr>
	<tr>
		<td>Simcodes needed:</td>
		<td>None</td>
	</tr>
	<tr>
		<td>Support files needed:</td>
		<td>None</td>
	</tr>
</table>

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