processor 写到了 write-buffer 里,而网卡可能没有读到 buffer 中的数据,而是读到了 memory 中的 stale data,造成写 stale data 网络中数据写到了 memory 中,通知 processor, processorlw读到了 cache,造成读 stale data 某种意义上说,这也是一种不一致导致的,为了解决这个问题,需要下列的支持 CPU 写的时候可以...
Synthesis lectures on Computer Architecture中_A Primer on Memory Consistency and Cache Coherence (second edition) _和_Shared Memory Synchronization_两本书的笔记。为什么把它们放在一起:(1)Shared memory synchronization是实现并行编程的重要方法之一;(2)而在多核系统中,单纯让各核遵循program order并不能保证同...
A cache-based computer architecture is disclosed in\nwhich the address generating unit and the tag comparator\nare packaged together and separately from the cache\nRAMs. If the architecture supports virtual memory, an\naddress translation unit may be included on the same\nchip as, and logically ...
现代计算机架构设计,经过多年的发展和演化,沉淀了很多重要的思想,其中一个便是“层次化”,而Cache就是这种思想的一种很好的体现。以Cache为主体的memory hierarchy,在现代计算机架构中是名副其实的“半边天”。此外,了解Cache,不仅对了解CPU、GPU有重要的意义,对了解Linux Kernel也很有参考价值,此外,对Cache深入的理...
那么在算“cache总共需要多少位”时,也就是算每上面提到的“actual size in bits”,每个cache行除了4...
In subject area: Computer Science Cache behavior refers to the way in which data is accessed and managed in cache memory to reduce the time required for accessing data from the main memory. It involves principles of temporal and spatial locality to optimize the efficiency of cache access by min...
Meanwhile, in order to hide memory access latency, a processor copies data in a memory to a cache memory (hereinafter also referred to as "cache") to use the data. In order to identify the address of data in the memory, a copy of which has been hold in the cache, in addition to ...
CPU – Central Processing Unit is just like brain of a computer; and performs the arithmetical, logical operations of the system by carrying instructions on the code. The memory organization of a system is shown below: At the core is CPU, and then are cache, then RAM and then storage devi...
行大小就包括了tag、有效位、脏位以及有效数据,所以是这些加起来乘以行数。