Hierarchical Attention in Vision Transformers
Trace how local windows, shifted cross-window exchange, and patch merging turn one high-resolution token grid into a multi-scale vision hierarchy.
10 min readConcept
Tagged with
Optimization
Explore machine learning concepts related to Optimization. Clear explanations and practical insights.
37
Concepts Found
Concepts Related to Optimization
Virtual Memory & TLB: Complete Guide to Address Translation
Master virtual memory and TLB address translation with interactive demos. Learn page tables, page faults, and memory management optimization.
16 min readConcept
Cross-Entropy Loss for Classification
Understand cross-entropy loss for classification: interactive demos of binary and multi-class CE, the -log(p) curve, softmax gradients, and focal loss.
15 min readConcept
Flash Attention vs MHA vs GQA vs MQA: Comparing Attention Mechanisms
How Flash Attention, Multi-Head Attention (MHA), Grouped-Query Attention (GQA), and Multi-Query Attention (MQA) compare — algorithm vs architecture, KV-cache memory, quality trade-offs, and how to choose for production transformer inference.
5 min readConcept
Dilated Convolutions: Expanding Receptive Fields Efficiently
Understand dilated (atrous) convolutions: how dilation rates expand receptive fields exponentially without extra parameters and how to avoid gridding artifacts.
10 min readConcept
Understanding num_workers
Why DataLoader num_workers matters: processes hide load latency behind GPU work, how to find the sweet spot, and the memory/GIL pitfalls that come with the pool.
9 min readConcept
Memory Access Patterns: Sequential vs Strided
Master sequential vs strided memory access patterns. Learn how cache efficiency and hardware prefetching affect application performance.
8 min readConcept
Grouped-Query Attention: Head Sharing and KV Cache
Trace how grouped-query attention keeps independent query heads while sharing fewer key/value heads, projections, and compact KV-cache rows during LLM decoding.
11 min readConcept
Linear Attention Approximations
Explore linear complexity attention mechanisms including Performer, Linformer, and other efficient transformers that scale to very long sequences.
7 min readConcept
Quantization Effects Simulator
Embedding quantization simulator: explore memory-accuracy trade-offs from float32 to int8 and binary representations for retrieval.
10 min readConcept
Python Optimization Techniques
Learn a profiler-first Python optimization workflow: measure bottlenecks, choose the right lever, and verify performance changes.
12 min readConcept
Vector Quantization Techniques
Master vector compression techniques from scalar to product quantization. Learn how to reduce memory usage by 10-100× while preserving search quality.
12 min readConcept
Python __slots__ Optimization
Learn when Python __slots__ reduces memory, how slot storage differs from __dict__, and the caveats for dataclasses and inheritance.
11 min readConcept
Multi-Query Attention (MQA)
Learn Multi-Query Attention (MQA), the optimization that shares keys and values across attention heads for massive memory savings.
6 min readConcept
CPU Pipelines & Branch Prediction in Processors
Explore CPU pipeline stages, instruction-level parallelism, pipeline hazards, and branch prediction through interactive visualizations.
8 min readConcept
Hazard Detection: Pipeline Dependencies and Solutions
Master pipeline hazards through interactive visualizations of data dependencies, control hazards, structural conflicts, and advanced detection mechanisms.
14 min readConcept
MSE and MAE Loss Functions
Interactive guide to MSE vs MAE for regression: explore outlier sensitivity, gradient behavior, and Huber loss with visualizations.
8 min readConcept
Sliding Window Attention
Sliding Window Attention for long sequences: local context windows enable O(n) complexity, used in Mistral and Longformer models.
7 min readConcept
Thread Safety: Concurrent Programming Fundamentals
Complete C++ thread safety guide — race conditions with step-through simulation, mutexes, atomics, condition variables, deadlock detection, memory ordering, and Thread Sanitizer walkthrough.
20 min readConcept
Sparse Attention Patterns
Explore sparse attention mechanisms that reduce quadratic complexity to linear or sub-quadratic, enabling efficient processing of long sequences.
6 min readConcept
Adaptive Tiling: Efficient Visual Token Generation
Learn adaptive tiling in vision transformers: dynamically partition images based on visual complexity to reduce token counts while preserving detail.
7 min readConcept
CUDA Multi-Process Service (MPS): Sharing One GPU Context
Why exclusive CUDA contexts leave SMs idle under multi-process load, how MPS multiplexes clients through a shared context, thread percentage caps, and when to pick exclusive, MPS, or MIG.
14 min readConcept
HPC Performance Optimization: Scaling, Profiling, and Tuning
Amdahl and Gustafson ceilings, strong vs weak scaling, roofline bounds, and hiding all-reduce behind compute — the levers that decide whether more GPUs actually buy science.
11 min readConcept
Prompt Engineering for LLMs
Master prompt engineering for large language models: from basic composition to Chain-of-Thought, few-shot, and advanced techniques.
7 min readConcept
Flash Attention: IO-Aware Exact Attention
Interactive Flash Attention visualization - the IO-aware algorithm achieving memory-efficient exact attention through tiling and kernel fusion.
8 min readConcept
KV Cache: The Secret to Fast LLM Inference
Interactive KV cache visualization - how key-value caching in LLM transformers enables fast text generation without quadratic recomputation.
6 min readConcept
Neural Scaling Laws Explained
Explore neural scaling laws in deep learning: power law relationships between model size, data, and compute that predict AI performance.
8 min readConcept
Visual Complexity Analysis: Smart Image Processing
Learn visual complexity analysis in deep learning - how neural networks measure entropy, edges, and saliency for adaptive image processing.
8 min readConcept
Modern C++ Features (C++11 and Beyond)
Explore modern C++ features including auto, lambdas, ranges, and coroutines. Learn how C++11/14/17/20 transformed the language.
4 min readConcept
Multimodal Scaling Laws
Discover how multimodal vision-language models like CLIP, ALIGN, and LLaVA scale with data, parameters, and compute following Chinchilla-style power laws.
7 min readConcept
Gradient Flow in Deep Networks
Learn how gradients propagate through deep neural networks during backpropagation. Understand vanishing and exploding gradient problems.
9 min readConcept
NAdam: Nesterov-Accelerated Adam
Understand the NAdam optimizer that fuses Adam adaptive learning rates with Nesterov look-ahead momentum for faster, smoother convergence in deep learning.
6 min readConcept
C++ Compiler Optimization
C++ compiler optimization lab notebook — compare optimization levels, inspect compiler rewrites, diagnose auto-vectorization, and build production verification commands.
14 min readConcept
Internal Covariate Shift
Understand internal covariate shift: why layer input distributions change during training, how it slows convergence, and how batch norm fixes it.
8 min readConcept
SoA vs AoS: Data Layout Optimization
Structure of Arrays vs Array of Structures as instruments: cache-line fill, SIMD gather vs contiguous load, GPU coalescing, and AoSoA hybrids — when layout is a 10× decision.
12 min readConcept
Speculative Decoding: Draft, Then Verify
A small draft model proposes tokens, the target model checks them all in one pass, and a rejection rule keeps the output distribution exactly the target's.
10 min readConcept
Transparent Huge Pages (THP): Reducing TLB Pressure
Learn how Transparent Huge Pages (THP) reduces TLB misses by promoting 4KB to 2MB pages. Understand performance benefits and memory bloat tradeoffs.
18 min readConcept