Imagination Technologies has been in the GPU market for some decades with its PowerVR lineup that started out on desktop PCs and shifted to smartphones in later years, but the company also has experience with CPUs, as it once owned the Meta and MIPS IPs. The recent rise of the RISC-V and its push to rival ARM's processor architecture have inspired Imagination to reenter the CPU market with a plan to release a new RISC-V-based family of processor cores named Catapult over the next several years.
At this year’s RISC-V summit, Imagination announced that the Catapult heterogeneous processor family will compete with ARM’s Cortex lineup, complete with microcontrollers, real-time CPUs, high performance application processors and functionally safe CPUs. The microcontroller segment is already covered via an in-order core design for 32 / 64-bit systems that is now shipping to automotive integrators. This initial in-order core is also available for real-time CPU applications, but it is not yet ready in silicon form.
No performance figures have been provided as of yet for the microcontroller cores since they are meant for low-power devices, but Imagination’s schematics show that these can scale to 8 cores per cluster and each core comes with ECC for the L1 and TCM memory caches. There is also support for the new RISC-V Vector extensions and the plan is to integrate future instruction sets, as well.
The roadmap for the coming years includes an application processor based on an upgraded version of the current in-order core design with Linux support releasing in 2022, followed by a faaster in-order real-time and application processors in 2023. For 2024, Imagination plans to release its first 64-bit-only out-of-order multi-core application processors similar to what ARM is producing now. Beyond that, the roadmap shows “next gen heterogeneous compute” designs, which will most likely target datacenters and machine learning applications.
Other companies like SiFive and even Intel and Apple are looking to take the RISC-V architecture to the next level, so Imagination needs to come with a unique value proposition if it wants to emerge as a true ARM competitor. As it stands, the British company does have the extensive experience with the MIPS architecture, plus it designs its own GPUs and NPUs. Additionally, since it is not based in NA or SEA, there would not be geopolitical issues that restrict the access to core patents.
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