But synchronization also has another aspect: it enforces certain memory visibility rules as specified by the JMM.
但是同步还有另一个方面：正如JMM所指定，它强制实施某些内存可见性规则。
The other major area where the existing JMM caused some very confusing results was with memory operation reordering on volatile fields.
另一个主要领域是与volatile字段的内存操作重新排序有关，这个领域中现有JMM引起了一些非常混乱的结果。
Modern processors differ substantially in their memory models; the JMM should accommodate as many possible architectures as practical, without sacrificing performance.
现代的处理器在它们的内存模型上有着很大的不同；JMM 应该能够适合于实际的尽可能多的体系结构，而不会以牺牲性能为代价。
应用推荐