Data synchronization of multi core Simulink RT programs designed in a producer-consumer architecture

Suppose a reference model, running at 1 khz, produces a bunch of data to be used by another reference model running at 500 Hz. Each of those models is configured to run as different tasks.

Are there any design guidelines I need to adhere by to ensure consistency and synchronization of the data supplied by the producer reference model?

To be more specific, I'm worried about the following scenario : Producer ref model has two outputs : output1 which is a 12x1 signal and output2 which is a 50x50 matrix. Is there any possibility that those outputs aren't synchronized when read by the consumer ref model (e.g., output 1 is from iteration 10 of producer loop while output 2 is from an iteration 9, which may happen if consumer loop is executed before completion of output 2 update?)

If so, how do I ensure synchronization?