Creating accelerators

Note: We recommend that you do not create accelerators except to maintain backward compatibility with existing data sources in which accelerators are used.

Accelerators instruct the OLAP database not to calculate rules that return a zero value. This was sometimes used in previous versions to optimize performance but is no longer necessary.

For example, this rule should not be calculated if Revenue, Discounts, or SD are all zero:

[MEASURE:'Net Revenue']=[MEASURE:'Revenue']-[MEASURE:'Discounts']-[MEASURE:'SD']

To prevent calculation with accelerators would require these three accelerators:

Target Source
[MEASURE:'Net Revenue'] [MEASURE:'Revenue']
[MEASURE:'Net Revenue'] [MEASURE:'Discounts']
[MEASURE:'Net Revenue'] [MEASURE:'SD']
  1. Select Dashboards > OLAP > Edit Dashboard.
  2. Select the cube in which to create an accelerator and click Rules.
  3. Select Enable former rules engine.
  4. Click the plus icon (+) and select Add new accelerator.
  5. Optionally, specify a name.
    By default, accelerators are named Accelerator [n] where N is a sequential number.
  6. Specify the target.
  7. Specify the source.