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为什么处理排序数组比处理未排序数组更快?
java
c++
performance
cpu-architecture
branch-prediction
如何实现每个周期 4 次 FLOP 的理论最大值?
c++
assembly
x86-64
cpu-architecture
flops
为英特尔 Sandybridge 系列 CPU 中的管道取消优化程序
c++
optimization
x86
intel
cpu-architecture
为什么在强度降低乘法到循环携带加法之后,这段代码执行得更慢?
assembly
optimization
x86-64
cpu-architecture
simd
什么是 retpoline,它是如何工作的?
security
assembly
x86
cpu-architecture
spectre
ARM 架构与 x86 有何不同? [关闭]
x86
arm
cpu-architecture
核心与处理器的区别
cpu
core
cpu-architecture
Visual Studio 中“首选 32 位”设置的目的是什么?它实际上是如何工作的?
c#
.net
visual-studio
compilation
cpu-architecture
“每个程序员应该知道的关于内存的知识”中有多少仍然有效?
optimization
memory
x86
cpu-architecture
cpu-cache
陷阱和中断有什么区别?
x86
operating-system
kernel
interrupt
cpu-architecture
为什么布尔值是 1 字节而不是 1 位大小?
c++
boolean
byte
cpu-architecture
abi
sjlj vs dwarf vs seh 有什么区别?
c++
compiler-construction
mingw
cpu-architecture
mingw-w64
为什么处理未排序数组的速度与使用现代 x86-64 clang 处理已排序数组的速度相同?
c++
performance
clang
cpu-architecture
branch-prediction
使用 -O3 的冒泡排序比使用 GCC 的 -O2 慢
c
gcc
x86-64
cpu-architecture
compiler-optimization
回写与直写缓存?
caching
cpu-architecture
cpu-cache
为什么 x86-64 系统只有 48 位的虚拟地址空间?
x86-64
virtual-memory
cpu-architecture
“FS”/“GS”寄存器的用途是什么?
assembly
x86
cpu-architecture
cpu-registers
memory-segmentation
是否有任何运行时代码修改的智能案例?
executable
cpu-architecture
instructions
self-modifying
platform-agnostic
字和字节有什么区别?
assembly
byte
cpu-architecture
terminology
word
为什么x86难看?为什么与其他人相比,它被认为是劣等的? [关闭]
assembly
x86
mips
x86-64
cpu-architecture
为什么英特尔在其处理器中隐藏内部 RISC 内核?
assembly
x86
intel
cpu-architecture
原子操作成本
performance
atomic
cpu-architecture
lock-free
为什么条件移动不易受到分支预测失败的影响?
performance
assembly
optimization
cpu-architecture
branch-prediction
检测 CPU 架构编译时
c++
c
detection
cpu-architecture
compile-time
L1 和 L2 缓存的行大小
caching
memory-management
cpu-architecture
cpu-cache
'perf stat' 结果中的停滞周期前端和停滞周期后端是什么?
linux
performance
optimization
computer-architecture
cpu-architecture
CPU使用率是如何计算的?
algorithm
performance
cpu
cpu-usage
cpu-architecture
为什么循环指令很慢?英特尔不能有效地实施它吗?
performance
assembly
x86
intel
cpu-architecture
用于 memcpy 的增强型 REP MOVSB
performance
assembly
x86
cpu-architecture
memcpy
什么是缓存命中和缓存未命中?为什么上下文切换会导致缓存未命中?
concurrency
language-agnostic
cpu
cpu-architecture
cpu-cache
32位机器可以访问多少内存?
32bit-64bit
ram
cpu-architecture
更新到 Xcode 5 后 - ld: symbol(s) not found for architecture armv7 or armv7s linker error
cordova
static-libraries
cpu-architecture
ios7
xcode5
每条汇编指令需要多少个 CPU 周期?
performance
assembly
x86
cpu-architecture
cpu-cycles
x64 和 IA-64 有什么区别?
64-bit
x86-64
cpu-architecture
itanium
为什么 x86 是小端?
x86
intel
endianness
cpu-architecture
microprocessors
沙桥和 haswell SSE2/AVX/AVX2 的每周期 FLOPS
cpu
intel
cpu-architecture
avx
flops
malloc 可以分配的最大内存
c
memory-management
operating-system
malloc
cpu-architecture
x86、x32 和 x64 架构之间的区别?
x86
64-bit
x86-64
cpu-architecture
abi
原子操作是如何在硬件层面实现的?
x86
atomic
cpu-architecture
lock-free
smp
SMP 内核、进程和线程如何精确地协同工作?
multithreading
operating-system
multiprocessing
multicore
cpu-architecture
微融合和寻址模式
assembly
x86
intel
cpu-architecture
iaca
.csproj 的平台特定 ItemGroup 适用于程序集引用但不包含内容?
.net
assemblies
cpu-architecture
设计代码以适应 CPU 缓存?
c
performance
caching
cpu-architecture
cpu-cache
sse 指令是否消耗更多功率/能量?
performance
x86
sse
cpu-architecture
energy
乱序执行与投机执行
cpu-architecture
speculative-execution
在 Coffee Lake (Skylake) 上进行 bigint 乘法的第一步中,ADD 比 ADC 慢
performance
assembly
x86
cpu-architecture
micro-optimization
为什么ARM有16个寄存器?
arm
cpu-registers
cpu-architecture
并且比整数模运算更快?
assembly
arm
cpu-architecture
micro-optimization
用 C\C++ 编写的代码上下文中的无序执行与按序执行
c++
c
cpu-architecture
使用可变长度指令,计算机如何知道正在获取的指令的长度? [复制]
assembly
cpu-architecture
为什么我的处理器没有内置 BigInt 支持?
biginteger
cpu-architecture
processor
内存地址通常以位为单位多长时间
memory
byte
word
cpu-architecture
processor
是否可以在 java 中检测处理器架构? [复制]
java
cpu-architecture
uop的参考资料?
x86
cpu
intel
cpu-architecture
为什么 sqrtsd 指令的延迟会根据输入而变化?英特尔处理器
c
performance
assembly
intel
cpu-architecture
当 Skylake CPU 错误预测分支时,究竟会发生什么?
x86
intel
cpu-architecture
branch-prediction
speculative-execution
每个周期的浮点运算 - 英特尔
cpu
intel
cpu-architecture
flops
nehalem
x86 上失败的存储到加载转发的成本是多少?
x86
intel
cpu-architecture
micro-optimization
amd-processor
Intel x86处理器的整数除法算法
x86
hardware
intel
cpu-architecture
integer-division
缺少所需的架构 x86_64
ios
xcode7
x86-64
cpu-architecture
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