Articles – Page 101

September 12, 2019

In Part 1 of this series, we looked at the new high-end FPGA families from Achronix, Intel, and Xilinx. We compared the underlying semiconductor processes, the type and amount of programmable logic LUT fabric, the type and amount of DSP/arithmetic resources and their applicability to AI inference acceleration tasks, the claimed TOPS/FLOPS performance capabilities, and on-chip interconnect such as FPGA routing resources and networks-on-chip (NOCs). From those comparisons it is clear that each of these vendors’ offerings has unique and interesting capabilities … Read More → "High-End FPGA Showdown – Part 2"

Hot Chips 2019

by Rick Merritt

September 11, 2019

[A previous version of this article contained a metaphor to watching pornography which has been removed, with our apologies.]

For two days in late August, an estimated 1,000 engineers crowded into Stanford Memorial Hall in Palo Alto, Calif. for Hot Chips 2019. #HotChips19, aka #HotChips31, featured some of the most impressive microprocessors seen in Silicon Valley in some time. That’s because we are in a new golden age of chip architecture, according to tech gurus John Hennessy and David A. Patterson, who co-wrote a leading … Read More → "Hot Chips 2019"

Why Your Computer is Slower Than a 1970s PC

Creeping Featurism has Actually Slowed Down User Input

by Jim Turley

September 10, 2019

“I’m not deaf. I’m ignoring you.” T-shirt wisdom

Devo and The Tubes warned us this would happen: it’s de-evolution, or the completion backwards principle. We’re regressing. It’s not our imagination. Our computers really are getting slower.

Okay, so maybe not the entire computer, but one important part of nearly every modern machine is slower – a lot slower – than computers of two or three decades ago. You can also get custom designed … Read More → "Why Your Computer is Slower Than a 1970s PC"

Neural Network Notions and Tools

Mentor Announces AI Support via Catapult and Toolkits

by Bryon Moyer

September 9, 2019

At this summer’s DAC conference, Mentor had a couple of artificial intelligence (AI)-related announcements. One of them concerned their own use of AI for physical chip verification, which we have already covered. The other dealt with tools and blocks for use by engineers designing AI architectures, and that’s … Read More → "Neural Network Notions and Tools"

High-End FPGA Showdown – Part 1

A Tale of Three Cities

by Kevin Morris

September 5, 2019

Intel announced this week that they have begun shipping the first of their new Agilex FPGAs to early-access customers. This moves us into what we historically think of as the “head-to-head” phase of the competition between the two biggest FPGA suppliers. Xilinx shipped their first “Versal ACAP” FPGAs back in June, so, after a very long and contentious “who is going to ship first?” battle, it turns out the two rival companies began shipping their comparable FPGA lines within about two months of each other. This means that, unlike other recent races to be first on … Read More → "High-End FPGA Showdown – Part 1"

Why Engineers Don’t Set Prices

There’s a Black Art to Pricing, and Most of It’s Mysterious

by Jim Turley

September 4, 2019

“Never attribute to malice that which can be adequately explained by stupidity.” — Hanlon’s razor

You may remember them. A young newlywed couple cancelled their big honeymoon plans because the trip got too expensive. They’d spent months preparing for a big driving trip from their home in southern California up north to San Francisco, Monterey, and Napa Valley, hitting all the usual tourist spots. But in a tearful interview, the new bride said they’d had to cancel the trip because gas prices had gotten too high, busting their budget. Instead, … Read More → "Why Engineers Don’t Set Prices"

Analog Advancements

Agile Analog Uses In-House Automation; Cadence Speeds up Simulation

by Bryon Moyer

September 3, 2019

Two ongoing questions have plagued analog design for many years:

How can we design analog circuits more quickly and more portably?
How can we keep up with the growth in circuit size while still providing gold-standard sign-off simulation in a “reasonable” time? The meaning of “reasonable” being somewhat fluid…

At this summer’s DAC, I had a couple of conversations, each dealing with one of these questions. No Holy Grails have been … Read More → "Analog Advancements"

IBM Gives Away PowerPC; Goes Open Source

Want to Design Your Own 64-bit RISC Processor on the Cheap?

by Jim Turley

August 27, 2019

“With great power comes great responsibility.” – Uncle Ben

Remember PowerPC?

Nah, me neither. But now it can be yours. For free. Srsly.

IBM has released the Power Architecture instruction set to the Linux Foundation, making it freely available to anyone who wants it. It’s a no-cost, royalty-free license to the ISA much like the one for RISC-V and other open-source processors. Starting now, you can design your own PowerPC processor without first paying a hefty … Read More → "IBM Gives Away PowerPC; Goes Open Source"

Goldilocks Process Windows

Coventor’s Latest SEMulator3D Helps to Determine “Just Right”

by Bryon Moyer

August 26, 2019

One of the tricky bits when launching a new process is figuring out what the process window is. For anyone new to the concept, the window is the range of variation that’s allowable for a given process parameter. Go outside that range, and a die – or a wafer – or a lot – may fail. It’s best if you can have a wide window, because then you can tolerate lots of variability. If the window is too narrow, then you’re spending all your time trying to thwart that variation and keep the equipment in the … Read More → "Goldilocks Process Windows"

Bluetooth Hack for Bad Guys

Just Turn the KNOB

by Kevin Morris

August 22, 2019

I’ve always had a love/hate relationship with Bluetooth. And, to be perfectly honest, it leans a bit more toward the “hate” end of the spectrum. As a consumer using various Bluetooth-enabled devices, I’ve experienced the frustration (shared by many, I’m sure) of flaky and unreliable pairing, mysterious behavior, and general lack of user-friendliness. Much of this is the less-than-optimal design of systems using the standard, but a good chunk of the problem likely lies with Bluetooth itself.

Take a deep breath. Bluetooth has been hacked.</ … Read More → "Bluetooth Hack for Bad Guys"