InOrder ToDo List

Python Configurability

• Resource Configuration - How can we specify what resources are instantiated via the Python config files?
  • ResourceType - Type of resource (Enum type)
    • ResourceParams - Parameters for this type of resource
    • Request - List of requests for this type of resource (Enum type)
      • Latency - operation latency and issue latency (intra/inter thread)
    • Count - Number of such resource type

• Pipeline Description
  • InstSchedule - Instruction schedule specified as a vector of InstClassSchedule
    • InstClassSchedule - Vector of schedules per instruction class - load/store, Int execute, FP execute, specialized inst, etc. (do we still want a distinction between front end and back end schedules?)
  • ResourceRequestList - Vector of ResourceRequest (per stage?)
    • ResourceRequest - Vector of requests for resources
  • ResourceType/Request options

Resources

• Execution Unit
  • Fold Address Generation Unit (AGEN) into the EXE
  • Pass a Function Unit Pool object to the EXE and specify what functions can operate through a specific unit (similar to O3)

Simulation Speed

• Instruction Sleeping
  • Sleep instructions waiting for an long-delay event (instead of constantly ask a resource if it's complete

• Event Sleeping
  • Sleep CPU w/no activity - Implemented on a coarse-grain level, but Activity object can be tuned to be exact.

• Resource Pool
• Instead of broadcasting all events to the resource pool, have resources declare what functions they have virtual functions for (or auto-detect this) and then only broadcast to the right set of resources every time (e.g. the BranchPredictor may not care about a Trap Event)

ISA Support

• ALPHA - completed
• MIPS - completed
• SPARC - partially completed (not currently being developed)
• ARM - not completed - Support for Micro-Ops Needed (Template code from Simple or O3 CPU?)
• X86 - not completed - Support for Micro-Ops Needed (Template code from Simple or O3 CPU?)
• POWER - not completed

Full System Support

• InOrder can boot Linux, but testing for benchmark suites
  • PARSEC
  • SPLASH2
  • SPEC2K6

Checkpointing

• The serialize/unserialize functions are currently unimplemented in InOrder

SwitchOut

• Implement the drain function for InOrder