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Deep Learning

  • What Are We Actually Doing?
  • The Tensor: What Is Actually Flowing Through the Loop?
  • Autograd: What Did PyTorch Record, and Where Does the Gradient Stop?
  • The Network: What Is It Without nn.Module?
  • nn.Module: What Does PyTorch Think Belongs to Your Model?
  • DataLoader: Where Is the Training Loop Actually Waiting?
  • Transforms: What Does the Model Actually See?
  • CNN Geometry: What Shape Reaches the Next Layer?
  • Feature Space: What Does a Linear Model Actually See?
  • Attention: Which Position Is Comparing With Which?
  • Training: Which Link in the Learning Chain Is Broken?
  • Performance: What Is the Machine Waiting For?
  • Assembly: A Language Model You Can Interrogate
  • PACS — Building an Optimizer From Gradient Statistics
  • HRM — Hierarchical Reasoning With Fast and Slow Recurrent State
  • SICQL — Building a Model From Q, V and Policy Networks
  • PyTorch Zero to Hero 10: Build a Small GPT-Style Language Model From Scratch
  • PyTorch Performance Debugging: CUDA OOM, Slow Training, GPU Utilization and torch.compile
  • PyTorch Model Not Learning? A Systematic Debugging Guide
  • PyTorch Attention Shapes: Q, K, V, Multi-Head Attention Masks and Transformer Dimension Errors
  • PyTorch CNN Shape Errors: Conv2d Output Sizes, Channels, Flatten Bugs and How to Debug Them
  • PyTorch DataLoader Performance: num_workers, pin_memory, Prefetching and Why Your GPU Is Waiting
  • PyTorch nn.Module Explained: Missing Parameters, state_dict, Buffers and Registration Bugs
  • Build a Neural Network From Scratch in PyTorch Without nn.Module
  • PyTorch Autograd Debugging: requires_grad, detach, backward() and NaN Gradients
  • PyTorch Tensor Shapes: Broadcasting, Reshape, View, Permute and the Errors That Waste Your Time
  • PyTorch Zero to Hero 00: What Are We Actually Doing?
  • Writing Neural Networks with PyTorch
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© 2026 Ernan Hughes
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