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OptiReduce

OptiReduce is a resilient and tail-optimal collective-communication framework for distributed deep learning in the cloud. It seamlessly integrates with PyTorch's Distributed Data Parallel (DDP) training to optimize communication performance in high-tail latency environments.

Why OptiReduce?

🚀 Faster Training

  • Eliminates bottlenecks from stragglers and slow workers
  • Optimizes performance in high-tail latency environments
  • Reduces training time, cost, and resource usage

💡 Key Features

  • Bounded-Loss Reliability: Speeds up training by tolerating small controlled loss
  • Tail Latency Optimization: Efficiently handles network variability
  • PyTorch Integration: Seamless integration with PyTorch DDP

🔧 Technical Highlights

  • Compatible with Mellanox ConnectX NICs
  • Efficient memory pool management
  • Zero-copy operations for maximum performance

Choose your path with OptiReduce

👉 Quick Start

📚 Learn More

Research

OptiReduce was presented at NSDI '25. Read our paper:

📄 OptiReduce: Resilient and Tail-Optimal AllReduce for Distributed Deep Learning in the Cloud

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