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Dev.to · Ingero Team
1w ago
124x Slower: What PyTorch DataLoader Actually Does at the Kernel Level
TL;DR: PyTorch's DataLoader can be 50-124x slower than direct tensor indexing for in-memory GPU...
Dev.to · Ingero Team
1w ago
Tracing a 13x PyTorch Slowdown to a Hidden NumPy Synchronization
TL;DR: A .cpu().numpy() call buried inside a forward pass was forcing a full CPU-GPU synchronization...
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