![Proposed Joint Library Working Group
• Single work group comprising members of both coalitions under SI2
– Less overhead among work group members
– Fewer duplicated or conflicting efforts
• Appropriate partitioning & allocation of development & implementation roles
& responsibilities
– OMC members responsible for C interface (IEEE-1481)
• OA compatible data structures & APIs
• Interface with OA for callbacks
– OAC members responsible for C++ interface (OA)
• Plug-in methodology & architecture ala Design Management (DM)
• Analysis annotation & access API definition
– Continuous validation with respective coalition change/steering groups
• Integration & verification integral part of objectives
– Not separate process or activity
– Continuous communication achieves objectives much more effectively than inter-
coalition work group “packet” communication and problem / conflict resolution
• Precluding differences and avoiding conflicts preferable to
[perhaps] disjoint interface / integration efforts
Open Library Access through a Standard Data Interface Architecture
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7th OA Conference - Nov 2005 - Opening Library Access - Standard Data Interface Architecture
- 1. Opening Library Access through a Standard Data Interface Architecture Timothy J. Ehrler H. John Beatty OMC Vice-chair OMC Chair Philips Semiconductors IBM Corp. tim.ehrler@philips.com jbeatty@us.ibm.com
- 2. Introduction • The OpenAccess Coalition (OAC) has had a long-standing, and now high-priority, roadmap item necessary for library model access – implement APIs and data structures • static (popular format) & dynamic (algorithmic) analysis methods – provide timing, power, and signal integrity modeling – provide functional information for synthesis, simulation, test, model analysis, and state-dependant evaluations – enable model analysis and annotation • The Open Modeling Coalition (OMC) was chartered to respond to the recommendations of the Design Technology Council (DTC) Library Task Force concerning industry-wide characterization and modeling issues – accuracy – consistency – data & algorithm transparency – standard application & tool access methods Open Library Access through a Standard Data Interface Architecture 2
- 3. Coalition Working Relationships • OpenAccess Coalition (OAC) chartered to address & manage design database issues & maintenance – OAC is a donation model • Seed technology was donated to the OAC • Changes to the standard made by others are given back to the OAC • Open Modeling Coalition (OMC) chartered to address library modeling & characterization issues – OMC is a license model • Seed technology is licensed to the OMC under Reasonable and Non-Discriminatory terms (RAND) – Owner retains ownership of contributed material • Improvements are licensed back (RAND) • Each coalition to have working group to address library modeling & analysis issues appropriate to their respective objectives – OAC Library Working Group (LWG) – OMC Data Model Working Group (DMWG) • Oversight & coordinating work group to be established to ensure compatible development & implementation – Include members of each coalition work group – Satisfy the requirements and obligations of both groups Open Library Access through a Standard Data Interface Architecture 3
- 4. Proposed Joint Library Working Group • Single work group comprising members of both coalitions under SI2 – Less overhead among work group members – Fewer duplicated or conflicting efforts • Appropriate partitioning & allocation of development & implementation roles & responsibilities – OMC members responsible for C interface (IEEE-1481) • OA compatible data structures & APIs • Interface with OA for callbacks – OAC members responsible for C++ interface (OA) • Plug-in methodology & architecture ala Design Management (DM) • Analysis annotation & access API definition – Continuous validation with respective coalition change/steering groups • Integration & verification integral part of objectives – Not separate process or activity – Continuous communication achieves objectives much more effectively than inter- coalition work group “packet” communication and problem / conflict resolution • Precluding differences and avoiding conflicts preferable to [perhaps] disjoint interface / integration efforts Open Library Access through a Standard Data Interface Architecture 4
- 5. OMC Architecture Deliverables • Static Format Characterization – Controlled revisions to the Subsystem ECSM format. Extended OA interface – ECSM-CMG established to Modeling oversee the improvements Subsystem • Dynamic format – Reference platform built DESIGN DATA Compiler ECSM around OAC and IEEE-1481 Data Model (DM) • Consistent application access to library data and algorithms Application 1 Application 2 Open Library Access through a Standard Data Interface Architecture 5
- 6. OMC High-Level Architecture INPUT Process Technology, Test Site, Design OA/OMC and Simulation Information Interface SNPS/Magma Characterization FE OMC DESIGN DATA POPULAR FORMATS (.lib, Data Model (DM) *1 OMC Raw SPDM, CSM, DM API PLUG-IN C++ ECSM, other) C-based Library API 1 Generator IBM IBM IP Model Generator Generator DESIGN IBM TOOLS Application1 Compilation System Application2 OMC Applicationn IEEE Popular MAGMA 1481 Format SDF Library Bridge OA Gear Generator Tools using Popular Format Libraries licensed technology Open Library Access through a Standard Data Interface Architecture 6
- 7. OpenAccess Library Interface Plug-In • Application currently interfaces with • Application need only interface with design database and library design database – Application responsible for library – Library communications transparent communications to application – Application must handle full set of – Library interface plug-in handles full external & callback functions set of external & callback functions – Complex application interface to – Application relieved of library-specific library required interface issues Application Open Library Access through a Standard Data Interface Architecture 7