内存(DRAM)：使用动态随机存取存储器（Dynamic Random Access Memory，简称DRAM）的芯片，比起 SRAM 来说...
CPU 要交给 FPGA 做一件事,需要先放进 FPGA 板上的 DRAM,然后告诉 FPGA 开始执行,FPGA 把执行结果放回 DRAM,再通知 CPU 去取回。 CPU 和 FPGA 之间本来可以通过 PCIe 高效通信,为什么要到板上的 DRAM 绕一圈?也许是工程实现的问题,我们发现通过 OpenCL 写 DRAM、启动 kernel、读 DRAM 一个来回,需要 1.8...
④ SCLK 时钟作用 :USB 总线中使用, 该时钟是 EPLL 锁相环产生的; 5.6410时钟体系图示 : 该图在 S3C6410X.pdf 文档中的 3.3.4.1 Clock selection between PLLs and input reference clock 章节, 124 页 ; (3) S5PV210 开发板时钟体系介绍 ( 24MHz 晶振频率 | 4 PLL ① APLL ② MPLL ③ EPLL ④ VPL...
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本文开篇就讲,FPGA 比 CPU 和 GPU 能效高,体系结构上的根本优势是无指令、无需共享内存。使用共享内存在多个 kernel 之间通信,在顺序通信(FIFO)的情况下是毫无必要的。况且 FPGA 上的 DRAM 一般比 GPU 上的 DRAM 慢很多。 因此我们提出了 ClickNP...
条DRAM的大小。 高速缓冲存储器Cache主要是为了解决CPU和主存速度不匹配而设计的。Cache一般由SRAM(静态随机存储器)芯片实现,它的存取速度接近CPU,快于DRAM,存储容量小于DRAM。它比主存的优先级高,CPU存取信息时优先访问Cache,找不到的话再去主存DRAM中找,同时把信息周围的数据块从主存复制到Cache中。 现代计算机系统...
I am trying to invoke a bash command from my python application in order to change background light on my touch screen. The python application will run on my Raspberry Pi (Rasbian/stretch). It's not c... Php shell_execute not working ...
correctly. System has worked before perfectly fine so I would assume the settings are correct. And the RAM has worked in another system. As far as I have heard if it was a ram issue it would be constant on the DRAM light and not going back and forth between the dram and cpu light....
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Issue: Boots into OS, but the computer will randomly crash and the red CPU light turns on. Can be hours, can be 20 minutes. I'm been troubleshooting for 5 days now. I've tried: Every variation of RAM before eventually getting it to boot with A2/B2 (It didn't work...