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![]() – Also attractive for high throughput servers – Building blocks for larger parallel systems (MPPs, clusters) Commonly called: Symmetric Memory Multiprocessors (SMPs).– Symmetric access to all of main memory from any processor. Point-to-point interconnectspoint-to-point interconnects (e.g. Bus-based Bus-based Multiprocessors: (SMPs)– A number of processors (commonly 2-4) in a single node share physical memory via A number of processors (commonly 2-4) in a single node share physical memory via system bussystem bus or or.Dragon Write-back Update ProtocolDragon Write-back Update ProtocolĮECC756 - ShaabanEECC756 - Shaaban#7 lec # 10 Spring2006 5-4-2006.– Write-update Bus-Snooping Protocol For Write-Back CachesWrite-update Bus-Snooping Protocol For Write-Back Caches – Write-invalidate Bus-Snooping ProtocolWrite-invalidate Bus-Snooping Protocol For Write-Through CachesFor Write-Through Caches– Write-invalidate Bus-Snooping Protocol For Write-Back CachesWrite-invalidate Bus-Snooping Protocol For Write-Back Caches – Sequential Consistency (SC) ModelSequential Consistency (SC) Model Shared Memory Access Consistency Models.Cache Coherence in Shared Memory Multiprocessors.Dragon Write-back Update Protocol Dragon Write-back Update Protocol PCA Chapter 5ĮECC756 - ShaabanEECC756 - Shaaban#1 lec # 10 Spring2006 5-4-2006Ĭache Coherence in Bus-Based Shared Memory MultiprocessorsMultiprocessors.MESI Write-Back Invalidate Protocol – Write-update Bus-Snooping Protocol For Write-Back Caches Write-update Bus-Snooping Protocol For Write-Back Caches.Bus-Snooping Cache Coherence Protocols – Write-invalidate Bus-Snooping Protocol Write-invalidate Bus-Snooping Protocol For Write-Through For Write-Through Caches Caches – Write-invalidate Bus-Snooping Protocol For Write-Back Write-invalidate Bus-Snooping Protocol For Write-Back Caches Caches.Shared Memory Access Consistency Models – Sequential Consistency (SC) Model Sequential Consistency (SC) Model. ![]() Shared Memory Multiprocessors Variations.Here it is presented a comprehensive study of those cache coherence protocols with their pros and cons.EECC756 - Shaaban EECC756 - Shaaban #1 lec # 10 Spring2006 5-4-2 Cache Coherence in Bus-Based Shared Memory Multiprocessors Multiprocessors To overcome this, there are lot of research works are going on and the outcome rules or techniques are called cache coherence protocols.The main objective of this paper is to collect all those research works together and represent them in an easy way, so that we could understand their techniques to overcome the particular problem. For that reason, one block in one cache gets invalidate when the same block is updated into any other cache and this is called cache coherence problem. In a multi-core processor system, each core has its own cache module where they are sharing the same memory unit. One of the major steps in this journey of evolution is the multi-core processor architecture. ![]() The main motive of evolution of architecture day by day is to make the system faster. ![]() In this new age of technology, not only the software but also the computer architecture has been evoluted to support those softwares. ![]()
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