ssdownload 0.3.1

Download sparse matrices from SuiteSparse Matrix Collection

SuiteSparse Matrix Collection Downloader

Modern Python tool for downloading sparse matrices from the SuiteSparse Matrix Collection

A command-line tool and Python library that makes it easy to discover, download, and work with sparse matrices from the world's largest collection of sparse matrix data.

✨ Features

• 🔍 Smart Matrix Discovery - Search by size, sparsity, mathematical properties, and more
• 📦 Multiple Formats - Download MAT-files, Matrix Market, or Rutherford-Boeing formats
• ⚡ Concurrent Downloads - Up to 8 parallel downloads with progress tracking
• 🔄 Resume Support - Interrupted downloads continue automatically
• ✅ Integrity Verification - MD5 checksum validation ensures data accuracy
• 🧠 Smart Caching - Skip re-downloads of existing files
• 🎨 Rich CLI - Beautiful progress bars and colored output
• 🔧 Type Safety - Full type hints for better IDE support

🚀 Quick Start

Requires uv.

uv tool install ssdownload
uv tool update-shell   # First time only, if ssdl is not on PATH
# Open a new terminal so PATH changes apply
ssdl info ct20stif

See the Installation Guide for details. To hack on the project, see the Development Guide.

Basic Usage

# Get matrix information
ssdl info ct20stif

# Download a matrix (auto-detects group)
ssdl download ct20stif

# Download in Matrix Market format
ssdl download ct20stif --format mm

# Search matrices with filters
ssdl list --spd --size 1000:10000 --field real

# Search square unsymmetric matrices
ssdl list --square --structure unsymmetric

# Bulk download (real) SPD matrices in size range
ssdl bulk --spd --field real --size 100:1000 --max-files 5

Python API Example

from ssdownload import SuiteSparseDownloader, Filter

# Simple download
downloader = SuiteSparseDownloader()
path = await downloader.download_by_name("ct20stif")

# Filtered bulk download
filter_obj = Filter(spd=True, n_rows=(1000, 10000))
paths = await downloader.bulk_download(filter_obj, max_files=5)

# Find rectangular matrices
rectangular = await downloader.find_matrices(Filter(square=False))

📚 Documentation

• Installation Guide - Detailed setup instructions
• CLI Reference - Complete command-line options
• Python API - Full API documentation
• Examples - Usage examples and tutorials
• Development - Contributing and development setup
• Troubleshooting - Common issues and solutions

🤝 Contributing

We welcome contributions! Please see our Development Guide for setup instructions and coding standards.

1. Fork the repository
2. Create your feature branch
3. Add tests for new functionality
4. Submit a pull request

📄 License

MIT License - see LICENSE file for details.

🙏 Acknowledgments

• SuiteSparse Matrix Collection by Tim Davis
• Built with httpx, Rich, and Typer