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 Decoding Formal

Posts Tagged ‘formal verification methodology’

Another Reason to Stay an Extra Day in Austin

Friday, June 3rd, 2016

If you are attending the Design Automation Conference (DAC) in Austin, Texas, June 5-9, and need a good reason to stay an extra day, look no further. Oski Technology is offering a one-day primer on advanced formal verification techniques at the DAC Decoding Formal one-day training, “Achieving Formal Sign-off”, on Thursday, June 9, from 10 a.m. until 5 p.m. at the Hilton Hotel, Austin. 
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Achieving Formal Sign-off: Key Learnings for Trainees and Experts

Monday, May 2nd, 2016

Formal sign-off is possible with today’s technology and methodology. But to get to formal sign-off takes an understanding of what is possible with formal verification, and an immersion in ongoing practice with formal methods and techniques. Moreover, early experiences with formal can determine later success with formal verification and sign-off. Even with a deep knowledge of a formal verification tool and extensive training from the tool vendor, exponential formal proof complexity often gets in the way of exhaustive coverage. Often what is needed is training in formal verification methodology and formal test planning that includes an exhaustive list of end-to-end checkers, as well as the mastering of formal techniques that help overcome complexity. (more…)

The Formal Verification Program Leader: An Emerging Role in Verification

Monday, February 22nd, 2016

Formal verification of hardware designs has been around for more than 25 years. Commercial tools, for example from AT&T Bell Labs and IBM, started appearing in the 1990s. It’s only recently that formal verification has been adopted into design and verification flows, due to a number of reasons. It’s harder to learn than simulation or emulation because of its complexity, and it takes time for a verification engineer to become proficient in using it. Formal verification experts typically learn 100s of different techniques over the course of their careers.

Now that we are in the era of formal verification, an important new role is emerging –– the Formal Verification Program Leader (FV Program Leader). (more…)

Happy Birthday, Decoding Formal!

Thursday, September 24th, 2015

On the radio yesterday, we heard that the song “Happy Birthday To You”, one of the most widely sung tunes in the world, was ruled by federal judge George H. King to finally be in the public domain!

This welcome news seems to come at the right time, as Oski Technology plans to celebrate the second anniversary of the Decoding Formal Club at our quarterly meeting on October 21 at Computer History Museum, in Mountain View.

Since it was founded in October 2013, the Decoding Formal Club has drawn the attention of engineers, designers and verification managers. In a relatively short time we have covered much ground, and become a forum where formal knowledge and experience can be shared among the growing community of formal enthusiasts. In turn, Oski’s featured presentations have covered many aspects of formal sign-off methodology: Bounded Proof, Abstraction Models, Formal Test Planning, End-to-End Checkers and Constraint Management.

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Decoding Formal @ DAC – Join Oski for Four Days of Formal Fun

Saturday, June 6th, 2015

Oski Decoding Formal Events are usually hosted at the Computer History Museum in Mountain View and have attracted lots of formal enthusiasts in the bay area. Deep formal talks from Oski, lectures given by formal experts from different companies, good networking, cool gifts and museum tours have become the signature of these events that formal engineers look forward to, every quarter.

To reach out to formal enthusiasts around the world and create a bigger event than usual, the 2015 Q2 Decoding Formal event will be hosted at DAC. Our theme is proving completeness of End-to-End Formal for Sign-off.

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The Impact of Great Teachers

Friday, May 1st, 2015

My daughter has been learning violin for the last 5 years with a wonderful Suzuki teacher. She emphasizes proper posture, beautiful tone and a good work ethic. This has built a solid foundation for my daughter to venture into learning other instruments. Last fall my daughter started playing flute for her school band, and viola at Young String Ensemble, the youngest division of Portland Youth Philharmonic, founded in 1929 as the first youth orchestra in the United States.

To help her prepare for the upcoming audition for the more advanced Portland Youth Conservatory Orchestra, we decided she would take some viola lessons with the Oregon Symphony Principal Violist. We were totally blown away after just one lesson.

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“What if” All Design and Verification Engineers Used Formal?

Monday, November 10th, 2014

What if all design and verification engineers used formal? What if formal tools become smart enough to do the abstractions? What if formal tools had infinite capacity? These and other questions were proposed by attendees on the event survey for this quarter’s Decoding Formal Club event on October 23, 2014 at the Computer History Museum in Mountain View, CA. (more…)

The Abstraction Model – Is It More, Is It Less?

Wednesday, January 22nd, 2014

Oski Technology provides formal verification services to leading semiconductor companies to verify complex design blocks that are difficult to verify using simulation. In our projects, we often write Abstraction Models to overcome formal complexity barriers that would otherwise render formal verification results inconclusive. For example, for the open-source Sun OpenSparc T1 design, verifying a data transport checker without the Abstraction Models would have taken an estimated 991 days of run-time, but only 147 seconds with the Abstraction Models, a significant speed-up of 600,000X. With Abstraction Models and other similar techniques, formal verification can be used as sign-off criteria in the verification flow; Oski has helped many customers adopt and develop formal sign-off flows.

Customers often have the misconception that Abstraction Models reduce design behaviors which makes the formal verification task easier and allow it to finish sooner. They worry about missing bugs with Abstraction Models. In reality however, Abstraction Models do not reduce design behaviors; to the contrary they add to design behaviors by adding new reset states, and/or state transitions. As a result, no bug will be missed. More is less because when more behaviors are added purposefully and artfully, they can actually make the formal verification job easier for the tools and take less time. This might be counter-intuitive and may take some time and practice to get used to. But if one understands the concept and techniques of writing and using Abstraction Models, formal verification can be put to much better and broader use.

Because each design is different, custom Abstraction Models are needed for each design. There is no Abstraction Model VIP one can purchase to fit all kinds of designs. The good news is that knowing when and how to use Abstraction Models is very much a teachable, learnable skill. We teach our customers about Abstraction Models in our projects and we include the Abstraction Models we develop for the project as source code so customers can write their own Abstraction Models in future projects.

Now is your opportunity to learn more about abstraction models. Vigyan Singhal Oski CEO, will be presenting a talk on Abstraction Models in the upcoming Oski Decoding Formal Club event on Jan. 23rd, 2013 in Mountain View, CA. The talk will cover what Abstraction Models are, when you need them, how to write them and how to use them, using real examples.

Space is limited, so don’t miss this opportunity to come and learn more about Abstraction Models so your formal verification runs will take less time. Register for Oski Decoding Formal Club event on Jan. 23rd, here.

Event: Decoding Formal Club meeting
Date: Thursday January 23, 2014
Time: 1:00 PM – 3:30 PM
Venue: Mountain View, CA.

For Abstraction Models, More is Less!

Oski’s Two New Secure Chambers Support Asia Growth

Wednesday, November 6th, 2013

Oski Technology, founded by Vigyan Singhal, pioneer and practitioner in formal verification, has earned great respect and reputation in the Silicon Valley for helping customers tape out mission-critical projects using formal technology. Leveraging the power of End-to-End formal verification and Abstraction Models, Oski works with its customers to adopt formal sign-off methodology so that formal verification can become part of the verification sign-off flow. (more…)

Oski Technology: Bullish on Formal Verification

Wednesday, October 2nd, 2013

Oski Technology may be named for the famous University of California at Berkeley’s bear mascot, but Oski is not bearish at all on the formal verification market. In fact, it’s downright bullish on this form of verification and its importance to chip design.

One recent morning, Vigyan Singhal, Oski’s president and CEO, was in the Mountain View, Calif., corporate headquarters ready to discuss his life in formal verification and what inspires him and the company he founded. (more…)

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