How Many Levels Of Abstraction Are Needed?

By Jon McDonald - 23 Oct, 2014 - Comments: 0

Recently I was having a conversation with a user who was creating cycle accurate SystemC models. My initial thought was, "Why would this be necessary?" Through the course of discussions I realized that he did have a design questions that required that level of accuracy and the simulation performance trade-offs were appropriate for his needs. His cycle accurate SystemC models were running at abo... » read more

Big Shift In SoC Verification

By Ed Sperling - 17 Mar, 2014 - Comments: 2

Semiconductor Engineering sat down to discuss software-driven verification with Ken Knowlson, principal engineer at Intel; Mark Olen, product manager for the Design Verification Technology Division of Mentor Graphics; Steve Chappell, senior manager for CAE technology and verification at Synopsys; Frank Schirrmeister, group director for product marketing of the System Development Suite at Cadenc... » read more

Abstractions: The Good, Bad And Ugly

By Ed Sperling - 27 Feb, 2014 - Comments: 0

Raising the level of abstraction has become almost a mantra among chipmakers and tools developers. By moving the vantage point up a couple rungs on the ladder, it’s easier to see how the individual parts of a design go together, to identify problems in the design as well as fixes to problems, and it all can happen much more quickly. That’s the theory, at least. And in most cases, it’s ... » read more

Divide, Abstract And Conquer

By Ed Sperling - 03 May, 2013 - Comments: 0

For years, the motto among design and verification engineers has been to look at the individual pieces of a design because it’s impossible to have a single tool or even an integrated collection of tools that can debug everything. That approach isn’t changing, but the method for getting there is. The driver behind this shift is a familiar one—growing complexity. Even platforms and subsy... » read more

The Best Abstraction

By Jon McDonald - 28 Mar, 2013 - Comments: 0

By Jon McDonald The other day I was asked what would be the best level of abstraction to model at for system-level design. This is a question I get, in one form or another, far too often. It reminds me of an old quote attributed to Lincoln, slightly updated and applied to this subject: “One model can answer some of the questions all of the time, and all of the questions some of the time, but... » read more

Modeling Errors

By Ed Sperling - 28 Feb, 2013 - Comments: 0

Raising the abstraction level in increasingly large and complex design requires proxies. In IC world, we think of them in terms of higher abstractions, but the basic premise is that you can’t focus on ever detail without losing sight of the bigger picture, so we build models that can represent those details. Done well, these models are incredibly useful. They save time, make it easier to ... » read more

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