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New posts in cpu-architecture
Total Store Order and write merging in x86(-64)
Aug 10, 2026
architecture
x86
x86-64
cpu-architecture
Why is rep movsb slow for overlapping forward memmove, and why does libc use it?
Aug 10, 2026
c++
performance
x86
cpu-architecture
memmove
Why are all IMUL µOPs dispatched to Port 1 only (on Haswell), even when multiple IMULs are executed in parallel?
Aug 09, 2026
assembly
x86-64
cpu
cpu-architecture
intel
Does 8086 initiate a 1-byte code fetch when there's only 1 byte left in the prefetch queue?
Aug 07, 2026
x86
cpu-architecture
x86-16
After enabling an interrupt via CSRRW in RISC-V, how many instructions may execute before trap entry?
Aug 03, 2026
cpu-architecture
interrupt
privileges
riscv
Does the x86-64 pipeline stall on an indirect jump like JMP RAX?
Aug 02, 2026
assembly
x86-64
intel
cpu-architecture
branch-prediction
Why are set cache associativity in modern day processors 8-way set associative?
Aug 02, 2026
caching
intel
cpu-architecture
cpu-cache
amd-processor
ARMv8.3 meaning of rcpc
Aug 02, 2026
arm
cpu-architecture
memory-barriers
memory-model
armv8
How to handle branch mispredictions that seem to depend on machine code position?
Aug 02, 2026
c++
performance
benchmarking
cpu-architecture
branch-prediction
Do atomic operations require support from hardware?
Jul 31, 2026
c++
c
cpu-architecture
atomic
lock-free
Why is the adressspace increased from 32 to 36 bits with PAE
Jul 29, 2026
paging
cpu-architecture
x86
page-tables
volatile increments with false sharing run slower in release than in debug when 2 threads are sharing the same physical core
Jul 28, 2026
c++
performance
x86
cpu-architecture
false-sharing
Detecting Aligned Memory requirement on target CPU
Jul 29, 2026
c
cpu-architecture
memory-alignment
predefined-macro
Why doesn't bitwise NOT affect the ZF bit or any other FLAGS?
Jul 28, 2026
assembly
x86
cpu-architecture
eflags
What happens when the target CPU is "Any" and an assembly has two editions, x32 and x64?
Jul 27, 2026
.net
visual-studio
sqlite
.net-assembly
cpu-architecture
What is the difference between ABI and CPU architecture type?
Jul 28, 2026
android
cpu-architecture
abi
Cache line size
Jul 27, 2026
c++
performance
caching
benchmarking
cpu-architecture
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