---
title: "Data parallelism mathematical notation"
description: "Data parallelism is a recurring research-paper notation family. Replicates model computation across ranks that process different examples, then…"
canonical_url: "https://fanout.sh/labs/math-decoder/symbol/data-parallelism"
md_url: "https://fanout.sh/labs/math-decoder/symbol/data-parallelism.md"
last_updated: "2026-08-09"
access: "public"
---

# Data parallelism mathematical notation

Data parallelism is a recurring research-paper notation family. Replicates model computation across ranks that process different examples, then…

## Public overview

Data parallelism is a recurring research-paper notation family. Replicates model computation across ranks that process different examples, then synchronizes parameter gradients or updates.

Data parallelism: Replicates model computation across ranks that process different examples, then synchronizes parameter gradients or updates. Example: Each of p workers processes a different local portion of the batch.

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