1. A method comprising: storing, in a memory, a computer model having a message sender object and a message receiver object, the computer model configured to execute over a model execution time; executing, by a processor coupled to the memory, the message sender object during execution of the computer model, the executing the message sender object including generating a message having a fixed payload that persists for a determined portion of the model execution time; storing the message in a message queue; retrieving the message from the message queue by the message receiver object; processing the fixed payload of the message by the message receiver object; and destroying the fixed payload of the message following the determined portion of the model execution time.