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Considerations when designing software for a multiprocessing system

Consider the following recommended guidelines when designing a multiprocessing system:

  • synchronize software execution on processors using LDREX and STREX to create a mutex or semaphore to protect critical sections and non-shareable resources

  • manage cache coherency for symmetrical and asymmetrical multiprocessing

  • execute repetitive tasks in separate threads

  • split a large task into several threads executing in parallel

  • set up a primary CPU using the CP15 CPU ID register for initialization tasks

  • prioritize interrupts

  • use bit masking for interrupt pre-emption

  • configure the cycle counts that trigger a timer or watchdog.

Note

These tasks are generally handled by an OS.

See also