tag: processors

Top500: Frontier Still On Top, Sunway Formally Reappears
By Barry Pangrle - 05 Jan, 2024 - Comments: 0

New versions of the Top500 and Green500 lists have been released, and Frontier continues its reign at Number. 1. But a newcomer, Aurora, using Intel’s Sapphire Rapids, has entered at the Number 2 position with a “half-scale” system. Both machines are HPE Crays, with the former using AMD optimized third-gen EPYC 64C at 2.0GHz and AMD Instinct MI250X, while the latter uses Intel Xeon CPU... » read more

Verifying A RISC-V Processor
By Ed Sperling - 17 Oct, 2023 - Comments: 0

Verifying an SoC is very different than verifying a processor due to the huge state space in the processor. In addition to the tools needed for an SoC, additional tools are required for a step and compare environment. Larry Lapides, vice president at Imperas, talks about the need to verify asynchronous events like interrupts, how to compare a reference model to RTL, and the need for both hardwa... » read more

RISC-V Wants All Your Cores
By Brian Bailey - 12 Oct, 2023 - Comments: 0

RISC-V is no longer content to disrupt the CPU industry. It is waging war against every type of processor integrated into an SoC or advanced package, an ambitious plan that will face stiff competition from entrenched players with deep-pocketed R&D operations and their well-constructed ecosystems. When Calista Redmond, CEO for RISC-V International, said at last year's summit that RISC-V w... » read more

Specialization Vs. Generalization In Processors
By Brian Bailey - 10 Aug, 2023 - Comments: 1

Academia has been looking at specialization for many years, but solutions were rejected because general-purpose solutions were advancing fast enough to keep up with most application requirements. That is no longer the case. The introduction and support of the RISC-V processor architecture has attracted a lot of attention, but whether that is the right direction for the majority of modern comput... » read more

Advanced RISC-V Verification Methodology Projects
By Imperas - 24 May, 2023 - Comments: 0

The open standard of RISC-V offers developers new freedoms to explore new design flexibilities and enable innovations with optimized processors. As a design moves from concept to implementation new resources are appearing to help with standards for testbenches, verification IP reuse, and coverage analysis. RISC-V offers every SoC team the possibility to design an optimized processor, but this a... » read more

RISC-V Disrupting EDA
By Brian Bailey - 23 Mar, 2023 - Comments: 3

The electronic design automation (EDA) industry started in the 1980s and primarily was driven by the test and PCB industries. The test industry was focused on simulation so that test vector sets could be developed and optimized. The PCB industry needed help managing complexity as system sizes grew. That complexity soon was eclipsed by IC complexity and the costs associated with making a mist... » read more

What Makes RISC-V Verification Unique?
By Brian Bailey - 09 Mar, 2023 - Comments: 0

Semiconductor Engineering sat down to discuss the verification of RISC-V processors with Pete Hardee, group director for product management at Cadence; Mike Eftimakis, vice president for strategy and ecosystem at Codasip; Simon Davidmann, founder and CEO of Imperas Software; Sven Beyer, program manager for processor verification at Siemens EDA; Kiran Vittal, senior director of alliances partner... » read more

Customizing Processors
By Brian Bailey - 28 Jul, 2022 - Comments: 1

The design, verification, and implementation of a processor is the core competence of some companies, but others just want to whip up a small processor as quickly and cheaply as possible. What tools and options exist? Processors range from very small, simple cores that are deeply embedded into products to those operating at the highest possible clock speeds and throughputs in data centers. I... » read more

What Future Processors Will Look Like
By Ed Sperling - 13 Jul, 2022 - Comments: 0

Mark Papermaster, CTO at AMD, sat down with Semiconductor Engineering to talk about architectural changes that are required as the benefits of scaling decrease, including chiplets, new standards for heterogeneous integration, and different types of memory. What follows are excerpts of that conversation. SE: What does a processor look like in five years? Is it a bunch of chips in a package? I... » read more

How To Optimize A Processor
By Brian Bailey - 26 May, 2022 - Comments: 0

Optimizing any system is a multi-layered problem, but when it involves a processor there are at least three levels to consider. Architects must be capable of thinking across these boundaries because the role of each of the layers must be both understood and balanced. The first level of potential optimization is at the system level. For example, how does data come in and out of the processing... » read more

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