Vector reductions explained
Horizontal operations, floating-point reassociation and the cost of the final combine.
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Performance Engineering
How Event Pipelines Move from CPU Counters to Application Analytics
A practical bridge from hardware performance counters to application analytics: how high-volume systems collect raw events, normalize them, detect anomalies, and turn noisy measurements into useful debugging and reporting signals.
Gather and Scatter Instructions Explained
Gather and scatter let vector code load or store elements at non-contiguous indexed addresses. They expand what can be vectorized, but irregular memory remains expensive.
Memory Aliasing and Vectorization
When two pointers may refer to overlapping storage, a compiler can be forced to preserve scalar ordering. Learn how alias analysis, restrict and runtime checks affect vectorization.
Loop-Carried Dependencies Explained
A loop-carried dependency connects one iteration to another. It is one of the most important reasons a loop cannot be executed or vectorized as independent iterations.