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How do cache lines work?
... the byte or word you're loading is not already present in the cache, your CPU will request the 64 bytes that begin at the cache line boundary (the largest address below the one you need that is multiple of 64).
Modern PC memory modules transfer 64 bits (8 bytes) at a time, in a burst of eight tran...
OS X10.9 环境下部署 QT5.3.1 常见的编译问题 - 更多技术 - 清泛网 - 专注C/C++及内核技术
OS X10.9 环境下部署 QT5.3.1 常见的编译问题出于本身对UNIX系统的好奇，以及身边一群对 Swift 语言各种推崇的苹果教徒的影响，这几天折腾起 MAC OS X来，体验下这个被无数开发者...
出于本身对UNIX系统的好奇，以及身边一群对 Swift ...
How to calculate a time difference in C++
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clock() returns the CPU time consumed by the program. So if the program is run in parallel the time returned by the function would be the accumulated of the time spent on all CPUs, rather than the time elapsed cplusplus.com/reference/ctime/cloc...
How are 3D games so efficient? [closed]
...ve never understood. How can a great big PC game like GTA IV use 50% of my CPU and run at 60fps while a DX demo of a rotating Teapot @ 60fps uses a whopping 30% ?
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What happens when a computer program runs?
...n also be loaded from elsewhere in memory or other places depending on the CPU instructions that are actually executed). They are essentially just very small, very fast on-chip memory locations that are used for a number of different purposes.
Register layout is highly dependent on the architectur...
How does BLAS get such extreme performance?
...se fixed-size small-dimension operations (called kernels) are hardcoded in CPU-specific assembly code using several CPU features of their target:
SIMD-style instructions
Instruction Level Parallelism
Cache-awareness
Furthermore these kernels can be executed in parallel with respect to each other...
How to scale threads according to CPU cores?
...so I will have a look at this. And it can be scaled according to available cpu cores? Because I can't see that in you short examples. Best regards, Andreas
– Andreas Hornig
Dec 30 '09 at 16:10
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How to run functions in parallel?
...same time" and thinking you can is just plain wrong. Depending on how many cpus you have, the load of the machine, the timing of many things happening on the computer will all have an influence on the time the threads/process start. Also, since the processes are started right after creation, the ove...
Why do x86-64 systems have only a 48 bit virtual address space?
...re not going to see a system which needs more than that any time soon.
So CPU manufacturers took a shortcut. They use an instruction set which allows a full 64-bit address space, but current CPUs just only use the lower 48 bits. The alternative was wasting transistors on handling a bigger address s...
CPU acceleration status: UT feature disabled in BIOS/UEFI - App Invent...
安卓模拟器启动报错：
CPU acceleration status: UT feature disabled in BIOS/UEFI
86_64仿真当前需要硬件加速CPU加速状态：在BIOS/UEFI中禁用了UT功能
需要在主板中开启硬件加速功能，具体如何开启待整理，或者可以直接问问 deepseek...