WMM (Weak Memory Models)

WMM (Weak Memory Models) describe how modern computers handle multiple tasks and processes simultaneously. Unlike strict models where actions occur in a clear, predictable order, WMM allows some operations to happen out of order or be delayed for efficiency. This can optimize performance but makes reasoning about exact behavior more complex. Think of it as a system that prefers speed by reordering tasks internally, trusting that the overall result remains consistent. Understanding WMM helps developers ensure their code behaves correctly on different hardware architectures that adopt these flexible, high-performance memory strategies.