Hybrid executive: user's approach

Hybrid executive programs have long been prevalent in the hybrid computer simulation industry, however, what should be the essential features of a hybrid executive is still a controversial subject. For the most part, the design of hybrid executives has been undertaken by the manufacturers of hybrid systems and in many designs the complexity in the operation of these programs has resulted in their usage only on large class digital systems. Consequently, hybrid facilities which employ a small to medium class digital computer system are faced with the task of developing an executive program compatible with the facility environment. However, in many of these small to medium hybrid facilities, the segregated program development effort for a hybrid executive is not undertaken until considerable time after the installation of the hybrid system. The normal reasons are inadequate programming funds or a higher priority assignment of available personnel to satisfy programming and development needs of existing hybrid simulations.