FUTURE ADDITIONS

Clearly the model is only in a preliminary stage. There are many functions, methods, objects etc. which could be envisioned as upgrades to the present simulation. Here are a few which are currently in the works:

• It is planned that an object which can handle various mixtures of event types, with various collision distributions will be added to the RHIC object. This will allow the study of deadtime as related to mixtures of event rates, which will be crucial to understanding the trigger data flow response in p-p running.
• A new token scheme in which upon acceptance of an event by Level 1 analysis, the Level 1 Que Manager will add a new token to the tokenQue. Simulation of this technique for throttle in the trigger will help provide information concerning latencies for events with respect to other throttle methodologies.
• Additions of Level 3 and Level 4 analysis objects. This will help provide a more true representation of token management and detector deadtime, as affected by DAQ busy, for instance. Currently there is no mechanism for DAQ busy, for instance when the ASIC has 14 events in its queue. This is clearly necessary for a more accurate model and simualtion and will be included in the L3/4 objects. The Trigger/DAQ interface and latencies related with this interface will also be incorporated in these new objects.
• Inclusion of input variables for CPU Loading time and distribution for Levels 1 and 2. This will provide a more "realistic" latency result, whereas currently the worst case scenario for the maximum input rate at the given trigger levels is incorporated.
• Inclusion of a distribution of times to WAIT for a HUNG event in Level 1 and Level 2 Cpu's.
• Inclusion of a rejection factor for events which hang in Level 1 and 2 analysis. In conjunction with these additions a REBOOT METHOD will be included for particular HANG states in the CPU's.