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OCP-IP Governing Steering Committee Meeting Teleconference April 23, 2009

OCP-IP Governing Steering Committee Meeting Teleconference April 23, 2009.

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OCP-IP Governing Steering Committee Meeting Teleconference April 23, 2009

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  1. OCP-IPGoverning Steering Committee MeetingTeleconferenceApril 23, 2009

  2. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35 AM: Metadata WG Update (Prashant) 5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James)7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  3. Call to Order and Agenda Review (Ian) • Call to Order • Welcome from the President • Review Agenda • Any additional items?

  4. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35AM:Metadata WG Update (Prashant)5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James) 7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  5. 8:05- 8:10 AM: 2009 Goals 8:10- 8:50 AM: AI Review (Ian) - CoreCreator Shipments - Princeton Sponsor Level Upgrade8:50- 9:00 AM: PR Update (Joe) 9:00- 9:20 AM: Motion to Adjourn/ Break/ Reconvene 9:20- 9:30 AM: Recruiting Update (Joe) 9:30- 9:40 AM: Budget/Cash Flow Update (Ian) 9:40- 9:55 AM: Administrative Update (VTM) 9:55- 10:00 AM: Enabling Resolution 10:00 AM: Motion to Adjourn

  6. Vote to Approve Last GSC Meeting Minutes • 29th GSC Meeting • January 15, 2009 in Milpitas, California

  7. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35 AM: Metadata WG Update (Prashant) 5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James) 7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  8. Next GSC Meeting (Ian) • 31st GSC Meeting • West Coast? Portland, Oregon? • Should this be telecon only? • We do need occasional face-to-face meetings • Date around week of July 13th?

  9. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35AM:Metadata WG Update (Prashant)5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James) 7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  10. OCP-IP Meta-Data Working GroupPlans and status OCP GSC meeting Apr 09

  11. 2009 Goals given to MDWG by TVWG/GSC • Spirit interoperability • Implement OCP within existing Spirit format • Spirit enhancements • Propose and drive modifications into IP-XACT standard • Core compatibility reports • Ability to automatically compare OCP interface configurations • Release IP-XACT checkers to OCP-IP community • Enhance for OCP 3.0

  12. People involved • Nokia: Vesa Lahtinen • TI: Prashant Karandikar, Anne-Francoise Joanblanq, Olivier Sagner, Bob Maaraoui, James Aldis • Sonics: Kamil Synek, Pascal Chauvet, Drew Wingard • Synopsys: Mark Noll • STMicroelectronics: Serge Hustin, Christophe Amerijckx • Magillem Design Services: Cyril Spasevski, Stephane Guntz • Toshiba ( Yasuhiko ) • OCP-IP: Ian Mackintosh • Mentor Graphics later? • John Wilson already on the reflector, waiting for a Mentor participant to the teleconferences

  13. Background • OCP-IP has been talking about an IP-XACT description for several years, now we just simply need to provide it (in 2008, originally). Even if it means making some compromises. • Clean and elegant solution that fits all OCP users should be the goal, but it has to be something that complies with IP-XACT 1.4 and we need to get ok from key tool providers so that their tools will be able to use the description. • We should not make a monster. If somebody is only operating on small fixed OCP subsets, the full configurability of OCP should be hidden somehow. Still the description should also support the full set of configuration options. • Eventually IP-XACT description should replace rtl.conf.

  14. Spirit Interoperability Implement OCP within existing spirit format • Use the Magillem/Sonics proposal as basis • ST-style checking is used to validate an IP description Status : • Vendor Extension Schema for Busdef and Abstraction Definition have been defined and available in SVN repository. • OCP configuration Checker is also available in SVN repository. • Both of above deliveries have been conceptually agreed within MDWG and pending final approval. Next Steps • Documentation ( 2Q09 )

  15. Spirit Enhancement Propose and drive modifications into IP-XACT standard • Proposal for configurable bus interfaces was not accepted for IP-XACT1.5 • Spirit Consortium SWG agreed to put staging process for configurable bus interface solution , it may become part of the schema sometime later.

  16. Core Compatibility report Ability to automatically compare OCP interface configurations • Check the inter-interface consistency (Current configuration compliance checks) • Check consistency of a connected master / slave interface pair (Current interface interoperability checks) • Check consistency of the ports and parameters • Generate the rtl.conf file out of configured IP-XACT parameter list (legacy support) • Configure IP-XACT parameter list based on an rtl.conf file and give rtl.conf files of OCP standard profiles as examples (legacy support) • This activity is expected to happen during Q2/Q3 09

  17. OCP3.0 Add OCP 3.0 signals and parameters to bus definition schema • Activity duration is TBD

  18. Release IP-XACT checker to OCP-IP community • Steps for IP-XACT checker release • ocp vendor extension schema & checker approval by MDWG members. • Documentation of the schema & checker has been approved by MDWG members

  19. GSC Request to MDWG • Please put proposed schedule for all actions and plans listed • Specifically including goals to MDWG from TWVG/GSC

  20. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35 AM: Metadata WG Update (Prashant) 5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James) 7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  21. SLD WG Update Mark Burton (GreenSocs), April 2009

  22. Overview • Overview Status for SLD • Goals from TVWG • Mid-term outlook

  23. Summary • Release of TL1, TL2, TL3/4 for OCP in TLM 2.0 • Great Achievement; quality of architecture and code is very high • release was later than planned because of impossibility to schedule volunteer resource (architecture and review as well as code implementation) • number of known gaps in the release • quality control, benchmarking and regression testing can be extended • Outsource project to Greensocs highly successful • project is now finished • GS continuing to manage the SLD WG and provide support and small-scale upgrade effort • SLD WG is still limited to Sonics, TI and Greensocs • Nokia and Cadence have expressed interest in reviewing the kit • Still talking to other companies about joining the WG • SLD WG plans are to • Do incremental work on the current code • Nothing else

  24. SLD WG Status

  25. OCP-3 TLM/SLD Standards • Cache coherency extensions to OCP • This is on our roadmap for 2009 • No committed resource • Therefore impossible to predict delivery date

  26. The SLD Mid-Term Vision - unchanged • Ensure that OCP users have a 'complete' modelling infrastructure available • multiple levels of abstraction (pure-functional to cycle-accurate) and use models (software development, architecture exploration, etc) • completeness means • bus interface , performance monitoring interface ,system debug interface and configuration interface • Make this modelling infrastructure standards compliant. • E.g. drive existing OCP-IP experience and expertise into OSCI-TLM • Maintain alignment between OSCI-TLM OCP-IP

  27. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35 AM: Metadata WG Update (Prashant) 5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James) 7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  28. Network-on-Chip benchmarking workgroup, status update April 2009, Erno Salminen

  29. Current status • Erno Salminen is currently acting as a chairmain • Application modeling article • Short version published at Embedded.com • Camera ready version sent to IET Computer and Digital Techniques in April • Slide presentation will be published during DATE • Simulation tool Transaction Generator will become open source (more info a bit later)

  30. Current status (2) • Video decoding benchmark • Specification document being accepted by the workgroup • Vote 15th of April • Ready for member/GSC review (as/required?) • Describes the traffic patterns in HDTV decoding application • Multiprocessing chip, shared memory communication via external DRAM • Few accelerators in addition to CPUs • Bandwidth, burst size, target distribution • Prepared by Krishnan Srinivasan, Sonics Inc. • This document will be formatted as a white paper

  31. Current status (3) • Call for benchmarks has not succeeded yet • Teleconference held with EEMBC consortium (Markus Levy, Shay Gal-on) • We discussed collaboration between NoC wokrgroup and EEMBC • They showed moderate interest but saw no immediate benefits for themselves • Our workgroup aims to create traffic profiles from EEMBC’s benchmark programs, especially from Multibench • System-level design workgroup also contacted (Mark Burton) but no concrete advances yet

  32. Transaction Generator (TG) • Executes the NoC benchmarks • Reads the XML workload description • Injects/ejects data to/from network • Checks integrity, collects statistics • Implemented in SystemC • Originally developed at Tampere University of Technology • Will be published as open source in Q2-Q3 of 2009 • Promotes the availability of benchmarks

  33. TG (2) • Application • Kahn process network • Separation of computation and communication 28 A B 20 4 F C 25 8 30 D E • Application model and XML format were derived from the work done with TG • Only internal usage so far • Some effort needed in documentation • Mapping • Defines where tasks are executed I II III IV V Transaction Generator • Computation Architecture • Highly abstracted including characteristic parameters PE1 PE2 PE3 PE4 • Communication Architecture • Network model is cycle-accurate or event-accurate with time estimation Network model Legend: Inter-task transfer Mapping/grouping Initialization event Task Group Processing element (PE)

  34. Transaction Generator (3) • The license will be LGPL • GNU Lesser General Public license • Published changes will be LGPL, can be combined to proprietary SW if unmodified • Open questions • Where the repository will reside? • Detailed schedule • Documentation • Example designs

  35. Ongoing activities • Message-passing video encoder • Multiprocessor system implemented in FPGA • Runs MPEG-4 encoder • Initial measurements have been carried out • Detailed profiling is ongoing • Complements the shared mem. video benchmark • Medical image processing • No access to realistic input data sets (medical images of patients) • We will investigate if realistic traffic profiles can be obtained with synthetic images

  36. Ongoing activities • Guideline preparation • Will start in full force once the TG has been published • How to do measurements (higher priority) • How to create traffic models • Promotion plan is still being prepared • Finding more benchmarks • Easier said than done

  37. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35 AM: Metadata WG Update (Prashant) 5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James) 7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  38. Break

  39. 5:00- 5:10 AM: Call to Order, Introductions, Agenda Review, Last Minutes (Ian)5:10- 5:15 AM: Next GSC Meeting (Ian) 5:15- 5:35 AM: Metadata WG Update (Prashant) 5:35- 6:05 AM: System Level Design WG Update (Mark/James)6:05- 6:25 AM: NoC BWG Update (Erno) 6:25- 6:45 AM: Motion to Adjourn/ Break/ Reconvene 6:45- 7:15 AM: Specification WG Status (Drew) - Brief OCP v3.0 Update (Drew) - OCP v4.0 (Drew) - TI C2C Proposal (James) 7:15- 7:25 AM: FVWG Discussion (Ian) 7:25- 7:45 AM: Debug WG Update (Bob) 7:45- 7:50 AM: Technical Vision WG Status / Restated (Ian) 7:50- 8:05 AM: Progress in Asia (Ian)

  40. Specification WG 2009 Plan

  41. Specification WG Status • 3.0 Member Review draft • Essentially complete – expect by next week • 3.0 Specification bubble items • Relaxation of tag ordering rules • Agreed • Extension to profile 1 (add optional MRespAccept) • Retracted

  42. Next Specification Releases • OCP 3.0 (Member Review: May 09) • Focus is cache coherence extensions (major) • Verification guidelines delayed until later release • Also • Power management signaling (disconnect) • Write response extension • Profile 3

  43. Specification WG Issues • Cache coherence extensions • Planning to enable non-member reviewers (under NDA) • No motivation to cover in CoreCreator • Little clear drive for work beyond 3.0

  44. CoreCreator 4.0 (The old version) Status Check • Need to EOL this year • Only covers OCP 1.x and 2.0 • Getting very old (support more difficult) • Suggestion: • No new keys after July ’09 (~ 1 year after CC 2) • All keys expired by July ’10 • Can we go faster?

  45. OCP 4.0 Concept • See Ian’s slides

  46. OCP SPEC ROADMAP Existing OCP v 3.0 Planned ADDITION OCP v 4.0 Message Style Network Style Dedicated Wires (Cmd, Add, Data & Response, Control, etc.) Fewer Wires (Control + Payload) Bus-like (parallelism) Packet-style 46

  47. IMPORTANCE 47

  48. OCP 4.0 Status • Ian out prospecting • Drew needs to engage as well • Ian’s OCP 4.0 status • … • Suggest we plan 4Q’09 start

  49. OCP-IP Standardisation RoadmapLow Latency Chip-to-Chip Memory-Mapped Interface April 2009 James Aldis, Texas Instruments

  50. Summary • TI wants to standardise a memory-mapped chip-to-chip protocol • high bandwidth, low latency • lower latency than eg PCI-Express or Unipro • tightly-coupled with on-chip memory-mapped bus protocols • moderate pin count (eg 20 to 100 pins) • one key goal: • sharing of system memory, including CPU cache operations • TI wants OCP-IP to consider hosting this standardisation • strong correlation with the possible “OCP network socket” • agreement of semantics and ordering rules on- and off-chip • likely need for rich configurability • known to be quick and efficient workplace • Would apply only to the “protocol” and not to the physical interface • voltage, clocking, drive strength, pin locations, etc all outside OCP-IP scope • TI is looking at a number of options; OCP-IP is one of them • Need OCP-IP GSC feedback on the ideas in these slides • All information in these slides is preliminary and speculative

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