OmpSs Specification

The information included in this document is provided “as is”, with no warranties whatsoever, including any warranty of merchantability, fitness for any particular purpose, or any warranty otherwise arising out of any proposal, specification, or sample. The document is not guaranteed to be complete and/or error-free at this stage and it is subject to changes without furthernotice. Barcelona Supercomputing Center will not assume any responsibility for errors or omissions in this document. Please send comments, corrections and/or suggestions to pm-tools at bsc.es. This document is provided for informational purposes only.

Note

There is a PDF version of this document at http://pm.bsc.es/ompss-docs/spec/OmpSsSpecification.pdf

• 1. Introduction to OmpSs
  • 1.1. Reference implementation
  • 1.2. A bit of history
  • 1.3. Influence in OpenMP
  • 1.4. Glossary of terms
• 2. Programming model
  • 2.1. Execution model
  • 2.2. Memory model
    • 2.2.1. Single address space view
    • 2.2.2. Specifying task data
    • 2.2.3. Accessing children task data from the parent task
  • 2.3. Data sharing rules
  • 2.4. Asynchronous execution
  • 2.5. Dependence flow
    • 2.5.1. Extended lvalues
    • 2.5.2. Dependences on the taskwait construct
    • 2.5.3. Multidependences
  • 2.6. Task scheduling
  • 2.7. Task reductions
  • 2.8. Runtime Library Routines
  • 2.9. Environment Variables
• 3. Language description
  • 3.1. Task construct
  • 3.2. Target construct
  • 3.3. Loop construct
  • 3.4. Taskwait construct
  • 3.5. Taskyield directive
  • 3.6. Atomic construct
  • 3.7. Critical construct
  • 3.8. Declare reduction construct
• 4. API description
  • 4.1. Thread count and identifier
  • 4.2. Useful getters and setters*
  • 4.3. Using locks
  • 4.4. Using nested locks
  • 4.5. Timing routines