Official Resources
- Source Repository: https://github.com/CCPBioSim/Longbow
- Documentation: https://longbow.readthedocs.io/
- PyPI: https://pypi.org/project/longbow/
- License: Open source (BSD-3)
Overview
Longbow is a tool for automating simulations on remote HPC machines. It is designed to mimic the normal way an application is run locally but sends simulations to powerful machines, supporting LAMMPS, GROMACS, NAMD, AMBER, and other simulation packages.
Scientific domain: HPC job automation, remote simulation management
Target user community: Researchers running MD/DFT simulations on remote HPC clusters
Theoretical Methods
- Remote HPC job submission
- Local-like execution model
- File staging and retrieval
- Multi-scheduler support (Slurm, SGE, Torque)
- Job monitoring and recovery
Capabilities (CRITICAL)
- Remote HPC job submission
- Local-like execution interface
- File staging (upload/download)
- Multiple scheduler support
- Job monitoring
- Error recovery and resubmission
Sources: GitHub repository, ReadTheDocs
Key Strengths
Remote Execution:
- Local-like interface
- Automatic file staging
- Multiple schedulers
- Job monitoring
Multi-Code:
- LAMMPS, GROMACS, NAMD, AMBER
- Any command-line application
- Flexible configuration
- Plugin architecture
Easy to Use:
- Simple configuration
- One-command execution
- Automatic recovery
- Logging and debugging
Inputs & Outputs
- Input formats: Local simulation files, HPC configuration
- Output data types: Retrieved results, log files
Interfaces & Ecosystem
- Slurm: Job scheduler
- SGE/Torque: Alternative schedulers
- SSH: Remote access
- Python: Core language
Performance Characteristics
- Speed: Job management (fast)
- System size: Any
- Automation: Full
Computational Cost
- Framework: Negligible
- Simulations: Hours (on HPC)
Limitations & Known Constraints
- SSH required: Need HPC access
- Configuration: Per-cluster setup
- No provenance: No data tracking
- Not DFT-specific: General simulation tool
Comparison with Other Codes
- vs AiiDA: Longbow is simpler, AiiDA has provenance
- vs FireWorks: Longbow is remote-focused, FireWorks is database-backed
- vs Parsl: Longbow is local-like, Parsl is Python-native
- Unique strength: Local-like remote HPC execution with automatic file staging and multi-scheduler support
Application Areas
HPC Simulations:
- Remote MD simulations
- DFT calculations on clusters
- Batch job management
- Multi-node execution
Multi-Code:
- LAMMPS on HPC
- GROMACS on HPC
- Any CLI application remotely
Best Practices
Setup:
- Configure HPC connection
- Set up scheduler template
- Test with simple job
- Use recovery mode
Community and Support
- Open source (BSD-3)
- PyPI installable
- CCP BioSim maintained
- ReadTheDocs documentation
Verification & Sources
Primary sources:
- GitHub: https://github.com/CCPBioSim/Longbow
Confidence: VERIFIED
Verification status: ✅ VERIFIED
- Source code: ACCESSIBLE (GitHub)
- PyPI: AVAILABLE
- Specialized strength: Local-like remote HPC execution with automatic file staging and multi-scheduler support