首先在PCPU模块里面增加寄存器 在流水线MEM那一阶段如果是STROE或者LOAD指令更新cache 采取的替换策略是FIFO策略,在cache上面增加了一个位U 整个cache的控制部分如下: 如果读取时没有hit,则会成memory中取值并存到cache里面 书本和ppt上的样例,初始化了datamemory的值 仿真结果 从仿真器可以比较容易观察数据的变化,特别...
关于page Cache和memory mappped Files 和zero copy 背景 由于前段时间在学习mysql相关的知识,其中涉及到了wal redo log以及磁盘的问题,在此记录一下。 Page Cache page Cache 是现代操作系统为了弥补硬盘写入速度的不足,而引入内存作为文件系统的缓存,它会把当前系统的所有剩余的内存作为page cache。 page Cache是在...
计算机的存储系统采用Register,Cache,Memory和I/O的方式来构成存储系统,无疑是一个性能和经济性的妥协的产物。Cache和Memory机制是计算机硬件的基础内容,这里就不再啰嗦。下面重点说明Write-back,Write-through及write allocate这三种操作的区别。 一、CPU读Cache 1. Read through,即直接从内存中读取数据; 2. Read al...
OOM:内存溢出(Out Of Memory),内存占有量超过了VM所分配的最大 可能出现OOM的原因: 加载对象过大 相应资源过多,来不及释放 解决: 在内存引用上做些处理,常用的有软引用、强化引用、弱引用在内存中加载图片时直接在内存中作处理,如边界压缩 动态回收内存优化Dalvik虚拟机的堆内存分配 自定义堆内存大小 ...
We have solved this problem by writing a Matlab script which takes the code and data sizes as input, gives the Verilog code as output. We have synthesized the BCH encoder and decoder at 32nm technology using synopsis design compiler and estimated area, power and delay of the encoder and ...
Task 1 – Active agents to mimic the memory and processor in the system In our UVM environment (uvm_env), we will instantiate master and slave active agents, which drive data and respond to activity on the bus. Each agent needs to be configured to represent the corresponding component ...
cache-coherence mesi-protocol Updated Nov 23, 2018 Verilog geokyr / advanced-topics-in-computer-architecture Star 0 Code Issues Pull requests Memory Hierarchy - Branch Prediction and Predictors - Cache Coherence Protocols | Advanced Topics in Computer Architecture at ECE NTUA architecture multithread...
(RISC-V) processor. To evaluate the performance of D2MB-ICache, the RISC-V processor was simulated with the Synopsysverilogcompiler simulator (VCS) and ten open-source benchmarks in Github were executed. The processor and its memory hierarchy configuration are described inTable 4. The executed...
Code Issues Pull requests Cache Controller for a multi-level Cache memory using four-way set-associative mapping with write-back, no-write allocate and LRU policy. Implemented on a Basys3 Artix-7 FPGA with proper delays and hit signals. cache-control lru-cache write-back basys3-fpga set-as...
Rather, it denotes in a relatively compact notation the novel cache metadata state and behaviors that a skilled computer designer must then recode into a circuit description or a concrete hardware definition language such as Verilog or VHDL. In the non-limiting example shown above, for a 4-...