Ethos is a family of synthesizable neural processor IPs designed by Arm for IoT and edge applications.

Overview

First introduced in late 2019, Ethos is a family of synthesizable neural processor IPs designed by Arm for various markets. The Ethos family represents the series of NPUs as part of Project Trillium. The underlying microarchitecture for all the Ethos NPUs is the MLP which is designed to be scalable through various configurations based on the SRAM sizes and the number of compute engines.

Members

N-Series

The Ethos-N series was introduced in October 2019. These are mainstream mobile and IoT NPUs designed to scale from 1-4 TOPS and from 250 mW up to 1.5 W. Multiple instances of those IPs may be combined using Arm's CCN-500 or CMN-600 interconnects to scale to higher performance.

General		Configuration		SRAM		Compute
NPU	Introduction	Quads	CEs	Bank	Total	MACs	OPS/clk	Int8	Int16
Ethos-N37	Oct 23, 2019	1	4	128 KiB	512 KiB	512 MACs	1024 OPs/clk	1.024 TOPS	256 GOPS
Ethos-N57	Oct 23, 2019	2	8	64 KiB	512 KiB	1024 MACs	2048 OPs/clk	2.048 TOPS	512 GOPS
Ethos-N77	Oct 23, 2019	4	16	64 KiB 256 KiB	1 MiB 4 MiB	2048 MACs	4096 OPs/clk	4.096 TOPS	1.024 TOPS

See also

• Intel Habana HL Series