In this Tag cache contains 19 tag bits, 1 valid bit, 1 dirty bit and 7 bits LRU (Least Recently Used)is the important concept of each data cache line, tag bits are used for holding the 19 tag bits (shown in fig 3)comes from the cache size controller unit of the address being accessed, the every valid bit indicates whether the cache line is valid or not and dirty bit is set when the cache line is written without updating the corresponding main memory
line, when the machine restarts all valid and dirty bits are reset.
Cache is a low access time and a low capacity memory which is used by the processor to temporarily hold those portions of the main memory
which are currently in use or may be used in nearest future.
"Our approach is to allow the GPU cores to execute computational functions, and have CPU cores pre-fetch the data the GPUs will need from off-chip main memory
," Zhou said.
The low-profile, half-length WarpDrive card plugs into a standard eight-lane PCIe Gen 2.0 server slot and is designed to deliver high performance with low latency and a low CPU burden independent of main memory
"I was only 18 and my main memory
is of Stuart Nethercott throwing up before we went out.
"Everything runs faster if you keep it in DRAM - if you keep it in main memory
," chief executive Larry Ellison said in a keynote address at a conference in San Francisco yesterday night.
But now a research team from NC State has developed a single 'unified' device that can perform both volatile and nonvolatile memory operation and may be used in the main memory
Origin Storage has welcomed a breakthrough in memory encryption that will allow instant-on memory - non-volatile main memory
- to be used more securely on desktop and laptop computers.
This combination of both volatile (DRAM) and non-volatile (flash) types of memory in a single unified device is definitely a breakthrough, and can lead to significant cost and power savings from servers to manufacturers and home users, apart from the definite performance improvements - where main memory
and storage are one and the same.
The main memory
is usually a dynamic RAM (DRAM) chip (Avizienis, A et al, 2004)
Those numbers couldn't fit into the main memory
of the computers the mathematicians had to work with, so they made extensive use of the computers' hard drives.
"My main memory
of last season is that the win at Liverpool kick-started us towards the title," said the striker.