9 Oct, 2019TECHCRUNCH.COM
At its annual TechCon event in San Jose, Arm today announced Custom Instructions, a new feature of its Armv8-M architecture for embedded CPUs that, as the name implies, enables its customers to write their own custom instructions to accelerate their specific use cases for embedded and IoT applications.
“We already have ways to add acceleration, but not as deep and down to the heart of the CPU. What we’re giving [our customers] here is the flexibility to program your own instructions, to define your own instructions — and have them executed by the CPU,” ARM senior director for its automotive and IoT business, Thomas Ensergueix, told me ahead of today’s announcement.
He noted that Arm always had a continuum of options for acceleration, starting with its memory-mapped architecture for connecting over a bus GPUs and today’s neural processor units. This allows the CPU and the accelerator to run in parallel, but with the bus being the bottleneck. Customers also can opt for a co-processor that’s directly connected to the CPU, but today’s news essentially allows Arm customers to create their own accelerated algorithms that then run directly on the CPU. That means the latency is low, but it’s not running in parallel, as with the memory-mapped solution....