METHOD AND SYSTEM FOR EXECUTION OF PARALLEL PROCESSING

摘要

PURPOSE: To provide a coexecuter which executes a function offloaded from a central processor(CP) in a data processing system according to the request from a control program which is executing more than one. CONSTITUTION: This system designates the code module which is accessed from a host shared memory by means of a coexecuter under the same constraint as a control program and an access limit at a request of a central processor(CP) to the coexecuter. The coexecuter can emulate dynamic access conversion from a host and use a provided host storage key when it accesses a host storage area. Data maintainability is maintained through a limited access operation state which is related to the coexecuter. An offloaded module is stored in a cache of a coexecuter local storage area for use at a future request after the offloaded module is accepted by the coexecuter, and the system proceeds the following call without waiting for the same module to be loaded once more.