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Brian Bailey

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Brian Bailey is Technology Editor/EDA for Semiconductor Engineering.

Author's Latest Posts

Integrity Problems For Edge Devices
By Brian Bailey - 14 Sep, 2020 - Comments: 0

Battery-powered edge devices need to save every picojoule of energy they can, which often means running at very low voltages. This can create signal and power integrity issues normally seen at the very latest technology nodes. But because these tend to be lower-volume, lower-cost devices, developers often cannot afford to perform the same level of analysis on these devices. Noise can come in... » read more

Is DVFS Worth The Effort?
By Brian Bailey - 10 Sep, 2020 - Comments: 2

Almost all designs have become power-aware and are being forced to consider every power saving technique, but not all of them are yielding the expected results. Moreover, they can add significant complexity into designs, increasing the time it takes to get to tapeout and boosting up the cost. Dynamic voltage and frequency scaling (DVFS) is one such power and energy saving technique now being... » read more

Components For Open-Source Verification
By Brian Bailey - 02 Sep, 2020 - Comments: 2

Defining an open-source verification methodology is a lot more difficult than just developing an open-source simulator. This is the reality facing open-source hardware such as RISC-V. Some people may be asking for the corresponding open-source verification, but that is a much tougher problem — and it is not going to be solved in the short term. Part one examined the reasons why open-source... » read more

Confusion Persists In Verification Terms
By Brian Bailey - 27 Aug, 2020 - Comments: 7

I find it amazing that an area of technology that attempts to show, beyond a reasonable doubt, that a design will work before it is constructed can be so bad at getting some basic things right. I am talking about verification terminology. I have been in this industry for over 40 years and it is not improving. In fact, it is getting worse. The number of calls I have with people where they hav... » read more

The Evolution Of High-Level Synthesis
By Brian Bailey - 27 Aug, 2020 - Comments: 3

High-level synthesis is getting yet another chance to shine, this time from new markets and new technology nodes. But it's still unclear how fully this technology will be used. Despite gains, it remains unlikely to replace the incumbent RTL design methodology for most of the chip, as originally expected. Seen as the foundational technology for the next generation of EDA companies around the ... » read more

Monitoring Chips After Manufacturing
By Brian Bailey - 19 Aug, 2020 - Comments: 2

New regulations and variability of advanced process nodes are forcing chip designers to insert additional capabilities in silicon to help with comprehension, debug, analytics, safety, security, and design optimization. The impact of this will be far-reaching as the industry discusses what capabilities can be shared between these divergent tasks, the amount of silicon area to dedicate to it, ... » read more

Redefining The Power Delivery Network
By Brian Bailey - 13 Aug, 2020 - Comments: 3

Reliably getting power around a package containing multiple dies, potentially coming from multiple sources, or implemented in diverse technologies, is becoming much more difficult. The tools and needed to do this in an optimized manner are not all there today. Nevertheless, the industry is confident that we can get there. For a single die, the problem has evolved slowly over time. "For a ... » read more

The Evolution Of Digital Twins
By Brian Bailey - 03 Aug, 2020 - Comments: 1

Digital twins are starting to make inroads earlier in the chip design flow, allowing design teams to develop more effective models. But they also are adding new challenges in maintaining those models throughout a chip's lifecycle. Until a couple of years ago, few people in the semiconductor industry had even heard the term "digital twin." Then, suddenly, it was everywhere, causing confusion ... » read more

Engineering Within Constraints
By Brian Bailey - 30 Jul, 2020 - Comments: 0

One of the themes of DAC this year was the next phase of machine learning. It is as if CNNs and RNNs officially have migrated from the research community and all that is left now is optimization. The academics need something new. Quite correctly, they have identified power as the biggest problem associated with learning and inferencing today, and a large part of that problem is associated with ... » read more

Open-Source Verification
By Brian Bailey - 30 Jul, 2020 - Comments: 1

Ask different people what open-source verification means and you will get a host of different answers. They range from the verification of open-source hardware, to providing an open-source verification infrastructure, to providing open-source stream generators or reference models, to open-source simulators and formal verification engines. Verification is about reducing risk. "Verification is... » read more

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