All Things Semiconductor!
If you read around topics in advanced formal verification you’re likely to run into something called Wolper coloring, or what Vigyan Singhal (Chief Oski at Oski) calls the Wolper method. Many domains have specialized techniques but what’s surprising in this instance is a seeming absence of helpful on-line explanations (though… Read More
I am sure there are many FPGA designers who are quite content to rely on hardware vendor tools to define, check, implement and burn their FPGAs, and who prefer to test in-system to validate functionality. But that approach is unlikely to work when you’re building on the big SoC platforms – Zynq, Arria and even the big non-SoC devices.… Read More
Once again Oski delivered in their most recent Decoding Formal session, kicking off with a talk on the infamous Meltdown and Spectre bugs and possible relevance of formal methods in finding these and related problems. So far I haven’t invested much effort in understanding these beyond a hand-waving “cache and speculative execution… Read More
This year I got a chance to talk with Cadence at DVCon on a whole bunch of topics, so expect a steady stream of blogs over the next couple of months. First up was an update from Pete Hardee (Director of Product Management) on, surprise, surprise, formal verification. I’m always trying to learn more about this space, so I picked a couple… Read More
Thanks to my growing involvement in formal (at least in writing about it), I was happy to accept an invite to this year’s Oski DVCon dinner / Formal Leadership Summit. In addition to Oski folks and Brian Bailey (an esteemed colleague at another blog site, to steal a Frank Schirrmeister line), a lively group of formal users attended… Read More
Formal methods are a vital complement to other tools in the verification arsenal, but they’re not without challenges. One of the more daunting is the “inconclusive” result – that case where the tool seems to be telling you that it simply gave up trying to figure out if a particular assertion is true or false. Compounding the problem,… Read More
Simulation dominates hardware functional verification today and likely will continue to dominate for the foreseeable future. Meanwhile formal verification, once thought to be a possible challenger for the title, has instead converged on a more effective role as a complement to simulation. Formal excels at finding problems… Read More
Two recently announced vulnerabilities in major processor platforms should remind us that bugs don’t organize themselves to appear only in domains we know how to test comprehensively. Both Meltdown and Spectre (the announced problems) are potential hardware system-level issues allowed by interactions between speculative… Read More
Periodically Mentor does us all a big favor by commissioning a survey of verification engineers across the world to illuminate trends in verification. This is valuable not only to satisfy our intellectual curiosity but also to help convince managers and finance mandarins that our enthusiasm to invest in new methods and tools … Read More
In the early days of IP reuse and platform-based design there was a widely-shared vision of in-house IP development teams churning out libraries of reusable IP, which could then be leveraged in many different SoC applications. This vision was enthusiastically pursued for a while; this is what drove reusability standards and … Read More
