US 12,282,366 B2
System, apparatus and methods for power communications according to a CXL power protocol
Francesc Guim Bernat, Barcelona (ES); Karthik Kumar, Chandler, AZ (US); Alexander Bachmutsky, Sunnyvale, CA (US); Dimitrios Ziakas, Portland, OR (US); and Rita D. Gupta, Cedar Park, TX (US)
Assigned to Intel Corporation, Santa Clara, CA (US)
Filed by Intel Corporation, Santa Clara, CA (US)
Filed on Jul. 26, 2021, as Appl. No. 17/443,374.
Prior Publication US 2021/0349512 A1, Nov. 11, 2021
Int. Cl. G06F 1/26 (2006.01); G06F 1/3203 (2019.01); G06F 1/3234 (2019.01); H04L 12/10 (2006.01)
CPC G06F 1/26 (2013.01) [G06F 1/3234 (2013.01); H04L 12/10 (2013.01); G06F 1/3203 (2013.01); Y02D 10/00 (2018.01)] 20 Claims
OG exemplary drawing
 
1. An apparatus comprising:
an interface to couple a plurality of devices of a system, the system including at least one central processing unit (CPU), at least one accelerator device, and at least one memory, the interface to enable communication according to a Compute Express Link (CXL) protocol; and
a power management circuit coupled to the interface, the power management circuit to:
receive, from a first device of the plurality of devices, a request according to the CXL protocol for updated power credits;
identify, based upon power redistribution negotiation, at least one other device of the plurality of devices to provide at least some of the updated power credits; and
communicate with the first device and the at least one other device to enable the first device to increase power consumption according to the at least some of the updated power credits.