User`s guide

CHAPTER 4 Projects and Jobs
User’s Guide 33
The number of records being processed within each single step is dependent on
the current value of Read Block Size of the previous component with a Read
Block Size property.
Selecting a small number is useful while performing a simulation. A large
number for Read Block Size can significantly enhance performance while a
project is executed.
Stepping from current and selected component
When a simulation is initially started, the component that will be executed with
the first step is being indicated with a green-dotted box.
When stepping through the project without modifications, the box moves from
component to component, eventually reaching the Data Sinks. Only the Data
Sink components will not cause a movement of the box, if they are stepped.
Instead of moving the active box, they will display successful or failure icons.
When moving from component to component the dotted box is highlighting the
respective component as current.
You can select a different component than the current component to inspect or
change its properties in the Property section. The selected component is
indicated by the green box.
The following example shows the Data Calculator as being current and the DB
Lookup Dynamic as being selected.
Figure 4-1: Example of current and selected components
The current component is the component that will be executed next when
selecting the Step button in the toolbar (or Run | Step). If you want to inspect
or change a component during the simulation process that is different from the
current component, then click it. The green box highlights the selected
component. You can resume the simulation after a component property
changes either from the selected or the current component.