In every chip, power is a progressive problem to be solved. Designers have long had to rely on a combination of experience and knowledge to tackle this dilemma, typically having to wait until after silicon availability to perform power analysis with realistic software workloads. However, this is too late in the game, as it becomes… Read More
Driving PPA Optimization Across the Cubic Space of 3D IC Silicon Stacks
The move to true 3D IC, monolithic 3D SOC and 3D heterogeneous integration may require one of the most major design tool architecture overhauls since IC design tools were first developed. While we have been taking steps toward 3DIC with 2.5D designs with interposers, HBM, etc., the fundamental tools and flows remain intact in many… Read More
Die-to-Die Connections Crucial for SOCs built with Chiplets
If you ascribe to the notion that things move in circles, or concentrically, the move to die-to-die connectivity makes complete sense. Just as multi-chip modules (MCM) were the right technology decades ago to improve power, areas, performance and cost, the use of chiplets with die-to-die connections provides many advantages… Read More
Mars Perseverance Rover Features First Zoom Lens in Deep Space
On July 30, 2020, NASA launched the Mars 2020 Perseverance rover, which is scheduled to land today. Perseverance has been deployed to Mars with a new mission: to search for evidence of past life and collect samples that will eventually be brought back to Earth by future missions.
Verification Management the Synopsys Way
Remember the days when verification meant running a simulator with directed tests? (Back then we just called them tests.) Then came static and formal verification, simulation running in farms, emulation and FPGA prototyping. We now have UVM, constrained random testing and many different test objectives (functional, power,… Read More
Synopsys Debuts Major New Analog Simulation Capabilities
Just prior to this year’s Synopsys User Group (SNUG) meeting, I had a call with Hany Elhak, Group Director of Product Management and Marketing at Synopsys, to talk about their latest announcements for analog simulation. Synopsys usually has big things to talk about each year around this time – this year is no exception. Hany… Read More
Accelerating Cache Coherence Verification
It would be nice if there were a pre-packaged set of assertions which could formally check all aspects of cache coherence in an SoC. In fact, formal checks do a very nice job for the control aspects of a coherent network. But that covers only one part of the cache coherence verification task. Dataflow checks are just as important, where… Read More
Addressing SoC Test Implementation Time and Costs
In business we all have heard the maxim, “Time is Money.” I learned this lesson early on in my semiconductor career when doing DRAM design, discovering that the packaging costs and time on the tester were actually higher than the fabrication costs. System companies like IBM were early adopters of Design For Test (DFT)… Read More
Your Car Is a Smartphone on Wheels—and It Needs Smartphone Security
Your modern car is a computer on wheels—potentially hundreds of computers on a set of wheels. Heck, even the wheels are infested with computers—what do you think prompts that little light on your dashboard to come on if your tire pressure is low? And computers don’t just run your infotainment system, backup camera, dashboard warning
Global Variation and Its Impact on Time-to-Market for Designs
We have come a long way from the days of limited and manageable characterization databases with fewer views and smaller library sizes. The technologies we are headed towards pushing characterization to its limits with special modeling for variation, aging and reliability all on a single process, voltage and temperature (PVT).… Read More