Run inference over millions of records — free of SQL, and without your data ever leaving Snowflake. Here's distributed batch inference at scale ⚙️
Title: Batch Inference at Scale
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⚙️ Overview
A capability that runs distributed inference workloads on Snowpark Container Services (SPCS) with Ray as the execution framework. Inference runs as a dedicated distributed workload, supporting both traditional models and LLMs, consolidating complex operations into a single API call.
❓ Challenges Solved
Many customers, especially those migrating from non-SQL systems, need batch inference decoupled from SQL.
・This is especially true for files and unstructured data at large scale
・Rearchitecting workflows around SQL-first patterns is a heavy burden
💡 Methodology & How It Works
・The input DataFrame is materialized and written to a stage as Parquet files
・A job is provisioned on SPCS; the primary node initializes as the Ray head and replicas join as workers
・Each worker reads staged data, performs inference independently, and writes results to an output stage
・Unified API: a single run_batch() call handles both structured and unstructured data
・Multimodal support (images, audio, video); workers load weights once and reuse across batches; JobSpec controls workers and GPU allocation
🌍 Use Cases
・Nightly summarization of millions of support tickets
・Product catalog enrichment via image-to-text generation
・Information extraction from scanned PDFs, audio transcription and labeling, video classification and description
BatchInferenceTask integrates with Snowflake Tasks for DAG automation, and all processing stays inside Snowflake — running large-scale inference while preserving data governance.
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