Some Key Observations on PetaSoft Software

Some Key Observations on PetaSoft Software

• All proposed hardware architectures have a complex memory hierarchy which should be abstracted with a software architecture
  • Consisting of a mix of machine specific and generic levels with well defined ADI’s or Abstract Device Interfaces
  • Management of latency with concurent threads or otherwise critical
• This implies a layered software architecture reflected in all components
  • Compiler Language and Runtime, Tools, Systems Software etc.
• The Software Architecture should be defined early on so that hardware and software respect it!
  • JNAC Architecture Review Board will be responsible for interfaces and evaluating compliance with them
• Users and Compilers must be able to have full control of data movement and placement in all parts of petaflop system
• Size and Complex Memory Structure of PetaFlop machines represent major challenges in scaling existing Software Concepts

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