One of the major features is the modeling of special purpose engines (zAAPs and zIIPs).

Having these engines in your current configuration, or the configuration that you want to model, significantly affects the performance of the whole Central Electronic Complex (CEC). Because of that, it is impossible to assign a fixed MIPS rating to a particular processor model without taking into account the number of special processors.

To reflect the effect of specialized engines on the performance of the whole CEC, all BMC Capacity Management for Mainframes components are using a proprietary method of calculating the dynamic MIPS rating. This method is based on the processor model and number of General Purpose engines, zAAPs and zIIPs.

Note that on 2086, 2096 and some 2094 processor models (4 xx, 5 xx and 6 xx), the speed of specialized processors (zAAPs and zIIPs) can exceed the speed of General Purpose processors by 1.25 to 17 times. This speed difference is also taken into account by all BMC Capacity Management for Mainframes components in the calculation of the dynamic MIPS rating.

While it is necessary to mention that specialized ICF and IFL engines also affect the performance of the CEC, their influence is much less significant because these engines are never used by an LPAR together with other types of engines. Because of that, BMC Capacity Management for Mainframes components do not currently take into account the effect of ICF and IFL engines on CEC performance.

For more information about modeling zAAPs and zIIPs, see the BMC Performance Predictor for Mainframes documentation.