四、ARM Coremark和Dhrystone 在通用微控制器市场，benchmark数据经常用来衡量微控制器的性能，如下表所示C...
比如,在上面GIF所示的效果图中,LCD Latency(也就是“刷新显存”所需时间)为43ms,而平均渲染一帧所需的时间是 4ms(229FPS),综合下来实际一帧的所消耗的时间是 43+4 = 47ms(为了简单,直接按照50ms计算),此时,我们可以认为最终帧率大约为 20FPS(1/50ms)。 实际上,经常有小伙伴看到Benchmark的动态效果时会...
从微架构角度来看,A78是对A76、A77的坚实迭代,主要改进了处理器前端和核内流水线,不过鲜有涉及Cache子系统。从Benchmark的角度来看这些改进基本是正向的,鲜有负面效果,令人印象深刻。总体而言,A78已经拥有了现代微结构的大部分基本特征,但是细节上较为粗糙和“简陋”;这是受制于移动端应用环境还是人力资源限制我们...
neon技术第一次实现是在ARM Cortex-A8处理器,ARMv7架构体系(ARMv7-A与ARMv7-R系列)上;neon寄存器有16个128位的Q寄存器, 32个64位的D寄存器(摘自1参考网址, 5.1.1 Core registers),寄存器列表如图A2-1所示(摘自2参考网址, A2.6.1 Advanced SIMD and VFP extension registers),需注意的是:S0是D0的低32位,...
Presents information on the Embedded Microprocessor Benchmark Consortium (EEMBC) benchmark scores announced by ARM for the ARM1026EJ-S synthesisable core for the EEMBC benchmarking suites in 2003. Design of the EEMBC suites; Components of the ARM1026EJ-S core; Scores....
The uses of SIMD enable much faster computation of 16-bit and 8-bit data in certain DSP operations as the calculation can be parallelized. However, in general programming, C compilers are unlikely to utilize the SIMD capability. That is why the typical benchmark results of the Cortex-M3 and...
CoreMark is a modern, sophisticated benchmark that lets you accurately measure processor performance. This application note addresses the following questions: • What is CoreMark? • Why does ARM recommend CoreMark over Dhrystone? • Where can I obtain the CoreMark benchmark?
只有个位数的提升，推测Geekbench对于L2不是很敏感，而对于L2缓存依赖的Sppdometer2这个benchmark提升比较...
ARM Cortex A53 Versus Cortex A15 Benchmark ARM Cortex A53 Versus Other Cortex-A Series Processors Dhrystone MIPS (Million Instructions Per Second) The speed of a given CPU depends on many factors, such as the type of instructions being executed, the execution order etc. The MIPS (million instr...
SPEC Benchmark测试表明:在DELL 工作站上面当增加50%的CPU时钟频率,同时辅助以hyper-threading 技术时,CPU 处理能力只有26%的增加,而在Itanium 2 CPU 系统上面,时钟频率只提高11%,但是cache 增加一倍,CPU 处理能力提高50%。但是cache 增加到一定程度以后,对性能的影响又会减弱。