Minutes, IBIS Quality Committee

10 Feb 2009

11-12 AM EST (8-9 AM PST)

ROLL CALL
  Adam Tambone
* Anders Ekholm, Ericsson
  Barry Katz, SiSoft
  Benny Lazer
  Benjamin P Silva
  Bob Cox, Micron
* Bob Ross, Teraspeed Consulting Group
  Brian Arsenault
* David Banas, Xilinx
  Eckhard Lenski, Nokia Siemens Networks
  Eric Brock
* Guan Tao, Huawei Technologies
  Gregory R Edlund
  Hazem Hegazy
  Huang Chunxing, Huawei Technologies
  John Figueroa
  John Angulo, Mentor Graphics
  Katja Koller, Nokia Siemens Networks
  Kevin Fisher
  Kim Helliwell, LSI Logic
  Lance Wang, IOMethodology
  Lynne Green
* Mike LaBonte, Cisco Systems
  Mike Mayer, SiSoft
  Moshiul Haque, Micron Technology
* Muniswarareddy Vorugu, ARM Ltd
* Pavani Jella, TI
  Peter LaFlamme
  Randy Wolff, Micron Technology
  Radovan Vuletic, Qimonda
  Robert Haller, Enterasys
  Roy Leventhal, Leventhal Design & Communications
  Sherif Hammad, Mentor Graphics
  Todd Westerhoff, SiSoft
  Tom Dagostino, Teraspeed Consulting Group
  Kazuyoshi Shoji, Hitachi
  Sadahiro Nonoyama

Everyone in attendance marked by *

NOTE: "AR" = Action Required.

-----------------------MINUTES ---------------------------
Mike LaBonte conducted the meeting.

Call for patent disclosure:

- No one declared a patent.

AR Review:

- Mike look into MeetingPlace issues
  - WebEx may be available soon

- Mike propose IBISCHK bug for 5.5.6
  - TBD

New items:

IBIS Summit review
- David presented information based on his suggestions about IQ Section 7
- Bob: Tim Coyle had a pretty good quality presentation
  - 54% of models had problems
  - Anders: It focused on syntax
    - The real problems are wrong but syntactically correct data
- Bob: The presentations are uploaded now

AR: Mike insure that David's section 7 document is in work archive

6.2.	{LEVEL 3} Sufficient points in waveform table
- Why this?: "This doesn't apply to waveforms from measurement."
  - Bob: No expectation of post-processing data
- Bob: Unequal point distribution is a suggestion, not a requirement.
- Mike: Should we keep the 1/10 [Ramp] dt suggestion?
- We could add a sentence to 5.4.2
  - Anders: Uneven timestep is not required if timestep is small enough
  - Mike: Pathological case with 4 points
  - David: Point density should be based on 2nd derivative
- Bob: Curve fitting algorithms are used
  - Even with a linear ramp the points should be there
  - Anders: Isn't PWL required?
  - Bob: If we require a number of points we have to say why it was chosen
- Anders: The word "greater" is the issue
- We changed 5.4.2 and deleted 6.2

6.3.	{LEVEL 3} Minimize waveform lead-in time
- Mike: Does 5.4.3 cover this?
- Anders: Excessive lead time can throw off cycle simulation
- Total time is to prevent overclocking, but that is no longer a problem
  - Mike: At one time tools had trouble with long trailing data
    - They still may not handle leading dead time the same
  - Bob: There is no math solution to overclocking that matches silicon
- Anders: "between all tables in each corner " is not correct
- Muniswar: This manipulates the duty cycle
- We made small changes to 5.4.3 and deleted 6.2

Next meeting:

17 Feb 2009 11-12 AM EST (8-9 AM PST)

Meeting ended at 12:09 PM Eastern Time.