A method of communicating data between at least two coprocessors in a single computing environment wherein one of the coprocessors is a transmitting processor and the other of the coprocessors is a receiving processor and the single computing environment includes a memory accessible by the coprocessors includes, among other things, determining in the transmitting processor the size of data to be communicated, attaching the data to a message and transmitting the message to the receiving processor if the size of the data is below or equal to a predetermined threshold value, and transmitting to the receiving processor a pointer that points to a location of the data in the memory if the size of the data is above the predetermined threshold value.