Meeting Notes May 16, 2007

From gem5

Contents 1 Release Issues 2 Cache Issues 3 Stuff that needs to get done now 4 New stuff that needs to be fixed

Release Issues

• Release notes are done
• Ship release today
• BK license expires (Nate is working on HG)

Cache Issues

• Multi-level coherence doesn't work which makes DMAs break
• Need memtester to do DMAs from another side of the bus
• Fix WriteInvalidate
  • If a writeback crosses a write invalidate need to drop writeback
• Need to use a single block cache in the bridge to cache blocks going back and forth to deal with partial blocks.

Stuff that needs to get done now

• Cache
  • Steve: Remove CSHRs flyspray1 flyspray2
• Bus Bridge
  • Ali: Add small cache to deal with partial DMAs flyspray
• Fix clock edge stuff
  • Nate: Implement clock stuff for all SimObjects based on container flyspray
  • Use this clock stuff everywhere we have "curTick + 1" now, esp. in cache and bus flyspray

New stuff that needs to be fixed

• O3
  • Kevin: O3 nack support (only needed if hooked directly to memory) flyspray
  • Gabe: LSQ coherence (needed for non-Alpha ISAs) flyspray
• Bus
  • Ron: Make snooping true/false as opposed to a range flyspray
  • Gabe: Bus needs to handle responses even when bus is blocked for requests flyspray
  • Bus cleanup flyspray1 flyspray2 flyspray3