TLDR Tech / Data
SilverTorch: Index as Model — A New Retrieval Paradigm for Recommendation Systems
SilverTorch is Meta's new retrieval system for recommendation engines like feeds and Reels. It introduces the “Index as Model” paradigm, turning the retrieval pipeline, including user embedding, ANN search, eligibility filtering, neural reranking, and multi-task scoring, into a unified PyTorch model. The system runs end-to-end on GPUs using Bloom filters and fused Int8 ANN kernels.
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