tag: processors

How To Extend The ‘Unscalable’ RISC Architectures
By Rupert Baines - 24 Feb, 2022 - Comments: 0

A couple of years ago, Erik McClure (a Microsoft software developer, at the time) published a blog entitled RISC Is Fundamentally Unscalable.  This blog was really quite interesting and made some very good points about the limitations of a pure RISC design. The limitations of a pure RISC design It takes me back: some of my first marketing tasks were around the religious war between RISC ... » read more

Amdahl Limits On AI
By Brian Bailey - 09 Dec, 2021 - Comments: 0

Software and hardware both place limits on how fast an application can run, but finding and eliminating the limitations is becoming more important in this age of multicore heterogeneous processing. The problem is certainly not new. Gene Amdahl (1922-2015) recognized the issue and published a paper about it in 1967. It provided the theoretical speedup for a defined task that could be expected... » read more

On-Chip FPGA: The “Other” Compute Resource
By Andy Jaros - 02 Dec, 2021 - Comments: 0

When system companies discuss processing requirements for their next generation products, the typical discussion invariably leads to: what should the processor subsystem look like? Do you upgrade the embedded processors in the current subsystem to the latest and greatest embedded CPU? Do you add more CPUs? Or perhaps add a little diversity by adding a DSP or GPU? One compute resource tha... » read more

Meeting Processor Performance And Safety Requirements For New ADAS & Autonomous Vehicle Systems
By Fergus Casey - 02 Dec, 2021 - Comments: 1

By Fergus Casey and Srini Krishnaswami Innovation in today’s automotive industry is accelerating as companies race to be the market leader in safety and autonomous vehicles. With vehicle control moving from humans to the vehicles’ active safety systems, more sensors – cameras, radar, lidar, etc. – are being added to automotive systems. More sensors require more computational performa... » read more

Factoring 2048-bit RSA Integers in 177 Days with 13 436 Qubits and a Multimode Memory
By Technical Paper Link - 18 Nov, 2021 - Comments: 0

Abstract: "We analyze the performance of a quantum computer architecture combining a small processor and a storage unit. By focusing on integer factorization, we show a reduction by several orders of magnitude of the number of processing qubits compared with a standard architecture using a planar grid of qubits with nearest-neighbor connectivity. This is achieved by taking advantage of a tem... » read more

What Is An xPU?
By Brian Bailey - 11 Nov, 2021 - Comments: 0

Almost every day there is an announcement about a new processor architecture, and it is given a three-letter acronym — TPU, IPU, NPU. But what really distinguishes them? Are there really that many unique processor architectures, or is something else happening? In 2018, John L. Hennessy and David A. Patterson delivered the Turing lecture entitled, "A New Golden Age for Computer Architecture... » read more

High-Level Synthesis For RISC-V
By Brian Bailey - 28 Oct, 2021 - Comments: 2

High-quality RISC-V implementations are becoming more numerous, but it is the extensibility of the architecture that is driving a lot of design activity. The challenge is designing and implementing custom processors without having to re-implement them every time at the register transfer level (RTL). There are two types of high-level synthesis (HLS) that need to be considered. The first is ge... » read more

Customize Off-The-Shelf Processor IP
By Roddy Urquhart - 28 Oct, 2021 - Comments: 0

Processor customization is one approach to optimizing a processor IP core to handle a certain workload. In some case it makes sense to design a dedicated core from scratch, but in many cases an existing core may partially meet your requirements and can be a good starting point for your optimized core. In the past some processor IP vendors, notably ARC and Tensilica, offered extensible cores ... » read more

New Approaches For Processor Architectures
By Ed Sperling - 26 Aug, 2021 - Comments: 0

Processor vendors are starting to emphasize microarchitectural improvements and data movement over process node scaling, setting the stage for much bigger performance gains in devices that narrowly target what end users are trying to accomplish. The changes are a recognition that domain specificity, and the ability to adjust or adapt designs to unique workloads, are now the best way to impro... » read more

The Difference Between Processor Configuration And Customization
By Roddy Urquhart - 26 Aug, 2021 - Comments: 0

For many years, people have been talking about configuring processor IP cores, but especially with growing interest in the open RISC-V ISA, there is much more talk about customization. So, what is the difference? A simple analogy is to think of ordering a pizza. With most pizzerias, you have standard bases and a choice of toppings from a limited list. You can configure the pizza to the ... » read more

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