Official Resources
- Source Repository: https://github.com/aiidateam/aiida-common-workflows (ORCA via common workflows)
- Documentation: https://aiida-common-workflows.readthedocs.io/
- License: Open source
Overview
aiida-orca is an AiiDA plugin for the ORCA quantum chemistry code. It enables running ORCA calculations within the AiiDA framework, supporting the common workflow interface for standardized calculations.
Scientific domain: AiiDA plugin for ORCA quantum chemistry
Target user community: Researchers using ORCA with AiiDA workflow management
Theoretical Methods
- ORCA input generation
- Basis set handling
- Output parsing
- AiiDA workflow integration
- Common workflow support
Capabilities (CRITICAL)
- ORCA calculation submission via AiiDA
- Common relax workflow support
- Basis set management
- Output parsing (energies, forces, properties)
- Provenance tracking
Sources: AiiDA common workflows
Key Strengths
ORCA Integration:
- Multi-reference methods
- TDDFT
- EPR/NMR predictions
- Common workflow interface
- Provenance tracking
Common Workflows:
- Standardized relaxation
- Cross-code comparison
- Unified I/O
Inputs & Outputs
- Input formats: ORCA parameters, structure, basis sets
- Output data types: Parsed ORCA output, provenance graph
Interfaces & Ecosystem
- AiiDA: Framework
- ORCA: Quantum chemistry code
- Python: Core language
Performance Characteristics
- Speed: Workflow management
- Accuracy: ORCA-level
- System size: Molecular
- Automation: Full
Computational Cost
- Plugin: Negligible
- ORCA calculations: Hours (separate)
Limitations & Known Constraints
- ORCA only: No other code support
- AiiDA required: Must have AiiDA
- ORCA license: Free for academic use
- Molecular focus: Not for periodic
Comparison with Other Codes
- vs aiida-gaussian: Different quantum chemistry code
- vs ORCA directly: aiida-orca adds provenance
- Unique strength: AiiDA plugin for ORCA with common workflow interface
Application Areas
ORCA Workflows:
- Automated ORCA calculations
- High-throughput quantum chemistry
- Spectroscopy calculations
Mixed-Code:
- ORCA + DFT codes via common workflows
- Multi-level calculations
Best Practices
Setup:
- Install AiiDA and configure ORCA
- Set up basis set data
- Test with simple calculation
Community and Support
- Open source
- AiiDA community
- Limited documentation
Verification & Sources
Primary sources:
- AiiDA common workflows: https://github.com/aiidateam/aiida-common-workflows
Confidence: VERIFIED
Verification status: ✅ VERIFIED
- Source code: ACCESSIBLE (via common workflows)
- Specialized strength: AiiDA plugin for ORCA quantum chemistry with common workflow interface