Abstract: Feedback control algorithms for controlling a given simulation model which relates to a computer-program-based method and respective system for providing a feedback control for a given set of control quantities of a simulation model, comprising a plurality of iterated simulation runs each of which consumes a considerable amount of time. Each single run is performed with a setting of starting values for certain entry control quantities suited to control certain target quantities. The respective next setting of entry quantities is based on the value of the target quantities measured in the preceding simulation run. In order to provide for a fast convergence of the target quantities to a final, predetermined value, the following formula is applied: x n + 1 ? = v n 1 + ? n ? ( 1 - v n ) where ?n=(n+1)u?nun u is the final value of the target control quantity aimed at un, its value achieved up to iteration n of the simulation run and ?n is a suitable system parameter.

Abstract: The invention relates to a method and respective system for accessing a cache memory in a computer system, wherein the cache memory is split up in at least two segments, wherein the cache memory is accessed by a plurality of competing cache memory requests via a number of commonly used input registers, wherein a cache segment model is utilized for reflecting the cache use by said competing requests, wherein cache memory requests are processed by a processing pipe and wherein each cache-request, before entering the processing pipe, is checked whether the segments of the cache memory are available at the cycle it needs, wherein said memory comprises the steps of: a) marking a segment model cell as busy with storing, if a store-request targeting to a cache segment corresponding to said model cell has received pipe access, b) blocking off from pipe access a fetch-request targeting to a segment model cell, which is marked busy with a store operation; and c) blocking off any store-request from pipe access, if at

Abstract: The invention relates to a method and respective system for accessing a cache memory in a computer system, wherein the cache memory is split up in at least two segments, wherein the cache memory is accessed by a plurality of competing cache memory requests via a number of commonly used input registers, wherein a cache segment model is utilized for reflecting the cache use by said competing requests, wherein cache memory requests are processed by a processing pipe and wherein each cache-request, before entering the processing pipe, is checked whether the segments of the cache memory are available at the cycle it needs, wherein said memory comprises the steps of: a) marking a segment model cell as busy with storing, if a store-request targeting to a cache segment corresponding to said model cell has received pipe access, b) blocking off from pipe access a fetch-request targeting to a segment model cell, which is marked busy with a store operation; and c) blocking off any store-request from pipe access, if at le

Abstract: Feedback control algorithms for controlling a given simulation model which relates to a computer-program-based method and respective system for providing a feedback control for a given set of control quantities of a simulation model, comprising a plurality of iterated simulation runs each of which consumes a considerable amount of time. Each single run is performed with a setting of starting values for certain entry control quantities suited to control certain target quantities. The respective next setting of entry quantities is based on the value of the target quantities measured in the preceding simulation run.