Tamarin:WeeklyUpdates

These updates concern Tamarin and related projects only.

Meeting Details (Changed as of 11/18/08)

• 10:00 AM Pacific Time (18:00 UTC) on Tuesdays
  • 1PM Eastern US, 7PM Oslo, 3AM (Wed) Seoul, 5AM (Wed) Melbourne
• Location: Tel: 877-220-5439 (US & Canada), +1-408-536-9900(International)
  • Meeting Place ID: 2000
• join irc.mozilla.org #tamarin for attendance taking and questions

Next meeting's Agenda Items (12/9):

• TBD

December 3, 2008

Attendees

• Intel: Shengnan
• Adobe: Edwin Smith, Steven Johnson, Tom Harwood, Leslie, Lars, Jeff Dyer, Rob Winchell, Rob Borcic, Trevor Baker, Dan Schaffer, Brent Baker, Dan Smith, Rick Reitmaier, Rishit Shah

Agenda Items Discussed

• Status of TC Release (Trevor Baker)
• Power PC Status (Edwin Smith)
• X64 Update (Rick Reitmaier)
• Global Optimizer (Tom Harwood)
• Verifier (Jeff Dyer)

Updates

Status of Tamarin Central Release (Trevor Baker)

• All acceptance tests passing - revision 703 of TC is stable
• Trevor to send changelist to list and post on other locations.
• Code size - 79 K bigger than VM in Flash 10
  • Prior to merge from Redux, we had reduced by 85K
• Performance - faster across the board. Most dramatic improvement linux using interpreter flash player 10 up to 182% faster
• Memory usage
  • mac using 8% less memory
  • every other platform using more (worst is using forceMIR on Windows using about 22% more memory)
• ACTION for QE to be added to backlog: Need a measure relative to the flash 10 VM
• Release notes (detailing changelist) will be provided.

Power PC Status (Edwin)

• PPC Nanojit port, now at Beta quality, code here - [1]
• Tracking bug here: [2]
• Performance is decent, ranging from slightly slower to 25% faster on sunspider/* and misc/*.

X64 Update (Rick)

• Still working on build and it is starting to generate LIR updates
• Found a problem with LIR generation that is being tracked down

Global Optmizer (Tom H)

• Now it can optimize and run most programs
• working on a deployment guide
• Performance - code size reduced by 15-20% (with standard deviation about the same)
• Still improving the code generated on the backend
• Will look at LVM integration and getting better error behavior
• GO will be posted on opensource.adobe.com (when it is in its final state)

Verifier (Jeff Dyer)

• Will post notes to tamarin devel list and check into tamarin repository
• Need a doc directory in Tamarin (off of the root)
• Feel free to review doc when posted
• Will create a separate bug to track the verifier documentation
• Next step is to do some refactoring of the verifier to separate code generation and verification logic.

Compiler Issue with Sun Sparc (Brent)

• Brent will ping Leon (bug for Sun Studio compiler) to see if there is an update as to when the compiler will be fixed.
• current issue is to modify code to get around issues for sun studio compiler for nanojit to work. Leon seemed to think it will be fixed in the sun compiler.

Older meetings

• December 3, 2008
• November 18, 2008
• November 11, 2008
• September 30, 2008
• August 26, 2008
• August 12, 2008
• July 22, 2008
• July 15, 2008
• July 1, 2008
• June 24, 2008
• June 17, 2008
• June 10, 2008
• June 3, 2008
• May 20, 2008
• May 6, 2008
• April 15, 2008
• March 25, 2008
• March 18, 2008
• March 11, 2008
• Tamarin Tech Summit Agenda, February 1, 2008
• January 15, 2008
• January 08, 2008
• December 18, 2007
• December 11, 2007
• December 4, 2007
• November 27, 2007
• November 7, 2007
• October 30, 2007
• October 23, 2007
• October 16, 2007
• October 9, 2007
• October 2, 2007
• September 25, 2007
• September 18, 2007
• September 11, 2007
• September 4, 2007
• August 28, 2007
• August 14, 2007
• August 7, 2007
• Meeting Announcement