CPU Microarchitecture Deep Dive
Pipeline stages, out-of-order execution, branch prediction, register renaming, and hardware memory reordering. How modern CPUs actually execute your code under the hood.
Pipeline stages, out-of-order execution, branch prediction, register renaming, and hardware memory reordering. How modern CPUs actually execute your code under the hood.
Data layout optimization, prefetching strategies, and cache line alignment for reduced memory stalls.
Minimizing branch mispredictions through code restructuring, conditional moves, and understanding predictor behavior.
Understanding GCC and Clang optimization passes, PGO implementation details, and when to use assembly for critical sections.
Compiler vectorization hints, intrinsics usage, and loop transformations for maximum SIMD utilization across x86, ARM, and GPU architectures.
Replacing expensive operations with cheaper equivalents. Division by multiplication, modulo with bitwise AND, and other algebraic transformations.
Context switching overhead, false sharing pitfalls, lock contention analysis, and NUMA considerations. When threading helps performance and when it destroys it.
Stack, pool, arena, and ring buffer allocators. When malloc() becomes the bottleneck and how specialized allocation patterns achieve 10-100x speedups.
Hardware performance counters, flame graphs, and bottleneck identification using perf, Intel VTune, and custom instrumentation.
How x86 and linux kernel boots up other processors and how do they achieve multiprocessing AKA SMP.
Internals of memory allocation in Linux Kernel.
Internal Architecture of Nvidia GPUs and execution model.