Abstract: An adapter card including a processing unit, an assigned memory and a system bus interface are disclosed. The system bus interface is connectable to at least one system bus of a primary computer system providing a connection to a number of at least one central processing units of the primary computer system, the number of at least one central processing units providing a plurality of processing entities. Configuration data stored in the assigned memory includes data defining all processing entities of all central processing units of the central computer system. The adapter card is operative to perform computations including: obtaining a system object representing a callable unit of a program from a program environment, transforming the system object into a plurality of threads, each thread being executable by one processing entity, assigning each thread to one processing entity, and transmitting each thread to the assigned processing entity for execution.