Imagination GPU cleared for RISC-V CPU compatibility, licensed to chip designers

We love it when a plan comes together


It seems we're a step closer to system-on-chips containing a mix of RISC-V CPU cores and a mainstream GPU powering Linux devices and the like.

Imagination Technologies' BXE-2-32 entry-to-mid-level GPU has been tested and validated to work with RISC-V-compatible CPU cores – and licensed to several companies building RISC-V chips, including RIOS Lab, SiFive, and Yadro, the biz told The Register.

That means we could soon see devices featuring system-on-chips that bring together RISC-V CPU cores and Imagination's graphics-rendering tech.

RISC-V system-on-chips using the BXE GPU could be used for gaming, though right now it's more likely they'll be used in applications ranging from augmented and virtual reality to in-vehicle entertainment systems and wearables, Jim Wallace, senior director of business development at Imagination, told us. Imagination’s GPUs will work with any RISC-V ISA compliant CPU core, he confirmed.

While it's already possible to use, say, an AMD Radeon GPU with PCIe-capable RISC-V systems, such as SiFive's HiFive Unleashed board, using open-source drivers, that's more of a desktop setup.

Imagination's announcement, on the other hand, heralds its early lead in bringing GPUs to RISC-V SoCs, allowing devices of all shapes and sizes to render accelerated graphics using the tech combination.

RISC-V is an up-and-coming alternative to x86 and Arm. RISC-V International sets the open-source specification, which can be used royalty free to implement CPU cores in microprocessors and system-on-chips. Imagination's compliant GPU fills a big gap in the RISC-V world, bringing it closer to offering a truly well-rounded architecture that can take market-dominating rivals. Arm, don't forget, licenses not just CPU cores to chip designers but also GPU engines.

So far, development of RISC-V-friendly graphics processors has been a fragmented effort, though RISC-V International this year is establishing a formal group to develop GPUs, with a focus on shading and artificial intelligence applications.

Imagination's graphics engines are used in Arm-based mobile chips from the likes of Mediatek. Apple tapped up Imagination's PowerVR architecture for its smartphones, tablets, and parts of its Macs. Imagination is evaluating the compatibility of its GPUs with DirectX, which drives Windows gaming. The BXE is compatible with the Vulkan 1.2, OpenGL ES 3.x/2.0/1.1, OpenCL 3.0, and Android NN HAL APIs, and is primarily aimed at Linux and Android devices.

Imagination has designed its own RISC-V CPU core called Catapult. The IMG BXE-2-32 GPU was validated by Andes Technology using its AX45 64-bit RISC-V CPU on an FPGA, which ran graphics workloads and benchmarks on Linux.

The BXE-series GPUs were launched in late 2020 for applications including entry-level gaming. The chips support 720p to 8K video playback. The FPGA environment included networking, memory, and other peripherals. ®

Narrower topics


Other stories you might like

  • Lenovo halves its ThinkPad workstation range
    Two becomes one as ThinkPad P16 stands alone and HX replaces mobile Xeon

    Lenovo has halved its range of portable workstations.

    The Chinese PC giant this week announced the ThinkPad P16. The loved-by-some ThinkPad P15 and P17 are to be retired, The Register has confirmed.

    The P16 machine runs Intel 12th Gen HX CPUs, but only up to the i7 models – so maxes out at 14 cores and 4.8GHz clock speed. The laptop is certified to run Red Hat Enterprise Linux, and can ship with that, Ubuntu, and Windows 11 or 10. The latter is pre-installed as a downgrade right under Windows 11.

    Continue reading
  • US won’t prosecute ‘good faith’ security researchers under CFAA
    Well, that clears things up? Maybe not.

    The US Justice Department has directed prosecutors not to charge "good-faith security researchers" with violating the Computer Fraud and Abuse Act (CFAA) if their reasons for hacking are ethical — things like bug hunting, responsible vulnerability disclosure, or above-board penetration testing.

    Good-faith, according to the policy [PDF], means using a computer "solely for purposes of good-faith testing, investigation, and/or correction of a security flaw or vulnerability."

    Additionally, this activity must be "carried out in a manner designed to avoid any harm to individuals or the public, and where the information derived from the activity is used primarily to promote the security or safety of the class of devices, machines, or online services to which the accessed computer belongs, or those who use such devices, machines, or online services."

    Continue reading
  • Intel plans immersion lab to chill its power-hungry chips
    AI chips are sucking down 600W+ and the solution could be to drown them.

    Intel this week unveiled a $700 million sustainability initiative to try innovative liquid and immersion cooling technologies to the datacenter.

    The project will see Intel construct a 200,000-square-foot "mega lab" approximately 20 miles west of Portland at its Hillsboro campus, where the chipmaker will qualify, test, and demo its expansive — and power hungry — datacenter portfolio using a variety of cooling tech.

    Alongside the lab, the x86 giant unveiled an open reference design for immersion cooling systems for its chips that is being developed by Intel Taiwan. The chip giant is hoping to bring other Taiwanese manufacturers into the fold and it'll then be rolled out globally.

    Continue reading

Biting the hand that feeds IT © 1998–2022