COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION To provide cache consistency on an SMP, the data cache often supports a protocol known as MESI. For MESI, the data cache includes two status bits per tag, so that each lin…

COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION Hardware-based solutions are generally referred to as cache coherence protocols. These solutions provide dynamic recognition at run time of potential inconsistency conditi…

COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION In contemporary multiprocessor systems, it is customary to have one or two levels of cache associated with each processor. This organization is essential to achieve reason…

COMPUTER ORGANIZATION AND ARCHITECTURE DESIGNING FOR PERFORMANCE NINTH EDITION Software cache coherence schemes attempt to avoid the need for additional hard-ware circuitry and logic by relying on the compiler and operating system to deal with the pr…

[Game Engine Architecture 5] 1.Memory Ordering Semantics These mysterious and vexing problems can only occur on a multicore machine with a multilevel cache. A cache coherency protocol is a communication mechanism that permits cores to share data betw…

An apparatus and method is described herein for providing robust speculative code section abort control mechanisms. Hardware is able to track speculative code region abort events, conditions, and/or scenarios, such as an explicit abort instruction, a…

A method and apparatus for verification of coherence for shared cache components in a system verification environment are provided. With the method and apparatus, stores to the cache are applied to a cache functional simulator in the order that they…

An embodiment provides a virtual address cache memory including: a TLB virtual page memory configured to, when a rewrite to a TLB occurs, rewrite entry data; a data memory configured to hold cache data using a virtual page tag or a page offset as a c…

BACKGROUND Typically, a multithreaded processor or a multi-processor system is capable of processing multiple instruction sequences concurrently. A primary motivating factor driving execution of multiple instruction streams within a single processor…

A method of handling processor to processor interrupt requests in a multiprocessing computer bus environment is described. This method allows a multiple-tiered, increasing priority, interrupt request scheme. This method also allows processor to proce…