An efficient streamlined cache coherent protocol for replacing data is provided in a multiprocessor distributed-memory computer system. In one implementation, the computer system includes a plurality of subsystems, each subsystem includes at least one processor and an associated cache and directory. The...
A cache memory system having a small-capacity and high-speed access cache memory provided between a processor and a main memory, including a software cache controller for performing software control for controlling data transfer to the cache memory in accordance with a preliminarily programmed software...
Cache memory works as a link between the processor and main memory and allows the processor to access data faster than it would if it had to go through the main memory every time. Cache stores copies of frequently used instructions and data from main memory into its own faster a...
The primary function of cache memory is to increase the physical memory capacity of a system by compressing data stored in RAM. Multiple levels of cache(L1,L2,L3)indicate varying degrees of compression, withL1being the most compressed and ...
Secondary memory is said to be slower than primary memory. Types of Computer Memory Although there are different types of memory in a computer, the most fundamental difference is between primary memory, also known as system memory, and secondary memory, often known as storage. The significant ...
A computer system includes a host bus, a CPU connected to the host bus, a main memory connected to the host bus, a cache memory and a memory controller. The cache memory is connected to at least one of the host-bus and the CPU, and stores cache data. A tag address and a flag are...
A high-performance and cost-effective cache memory system is provided for use in conjunction with a high-speed computer system. The cache memory system is used on a computer system having a central processing unit (CPU) of the type having a back-off function that can be activated to temporar...
cache memory on the hard drive. This is called a “disk cache.” It’s the slowest of all the cache levels, as it takes data from the hard drive to put on the RAM. The RAM may also store information for computer accessories and peripherals, like the DVD drive, in a peripheral cache...
Cache memory G.R.Wilson, inEmbedded Systems and Computer Architecture, 2002 15.2.1Memory write operations When the microprocessor performs a memory write operation, and the word is not in the cache, the new data is simply written into main memory. However, when the word is in the cache, bo...
By storing copies of data that are frequently accessed in cache memory, the CPU can retrieve this information more quickly, resulting in improved performance and responsiveness of the computer system. The cache memory in a microcomputer system is typically divided into levels, with each level having...