A parallel execution model for a database machine with high performances

A mixed MIMD/SIMD execution model for a reconfigurable computer is presented. This model is adapted to the use of a specialized associative coprocessor embedded in this host machine. A main characteristic of the model is that it uses four types of processes (decoding, calculus, coprocessor communication and transaction manager) and that in principle one process of each type is allowed on each processor. Time intervals are allocated to operations into partitions of the set of processors. Transfers are usually limited to identifiers, logical addresses and locks. Simulations display a high level of processor occupation. Therefore the machine yield may be very high, and the operations should be fast