Logic simulation apparatus based on dedicated hardware simulating a logic circuit and selectable to form a processing scale

A logic simulation apparatus comprising dedicated hardware simulating a logic operation of at least one logic circuit, and connected to at least one host computer, said logic simulation apparatus comprising:

• a plurality of clusters, each cluster comprising at least a communication network and a plurality of processor elements connected to each other through said communication network and forming a connection configuration, each of said plurality of clusters comprising:
• an event communication network connecting the processor elements and transferring an event packet thereamong;
• an input processor connected to said event communication network through a signal line and inputting said event packet;
• an output processor connected to said event communication network through said signal line and storing a history of said event packet;
• an interface controller connected to said at least one host computer through a channel and further connected to said processor elements through a system bus;
• and
• a control processor operatively connected to said system bus for controlling an operation of each processor element;
• and
• an upper communication network connecting said clusters;
• said at least one host computer being connect to at least one of the plurality of clusters, wherein the connection configuration among said plurality of clusters is changeable in accordance with a size of the logic operation being simulated, under instructions for configuration change generated by said at least one host computer wherein said connection configuration is changed in such a way that each cluster is selected to form a desired processing scale for simulation, all clusters are selected to form a plurality of cluster groups in accordance with the desired processing scale for simulation, and each cluster group is operated independently of each other;
• and wherein all clusters are selected to form one processing scale for simulation.