Abstract: Power-management techniques are described. In the power-management techniques, a computer system (such as a cloud-based computer system or a local computer system) dynamically controls an energy source that provides electrical power to a load at a location. Notably, the computer system selectively transitions between use of a (typically external) energy source (such as a power grid associated with a utility or power supplier, hydroelectric, a generator or a solar array) and an energy storage device (such as a battery or a battery array, thermal power storage, a mechanical flywheel, or another type of energy storage device) at the location to provide electrical power to at least a dominant (e.g., highest power-consuming) load at the location. Note that the selective transitions may be based at least in part on a price of electricity and/or carbon intensity of electricity.

Abstract: An electronic device may include an antenna that conveys wireless signals at frequencies greater than 100 GHz. The antenna may include a radiating element coupled to a uni-travelling-carrier photodiode (UTC PD). An optical path may illuminate the UTC PD using a first optical local oscillator (LO) signal and a second optical LO signal. An optical phase shift may be applied to the first optical LO signal. A Mach-Zehnder modulator (MZM) may be interposed on the optical path. During signal transmission, the MZM may modulate wireless data onto the second optical LO signal while control circuitry applies a first bias voltage to the UTC PD. During signal reception, the control circuitry may apply a second bias voltage to the UTC PD that configures the UTC PD to convert received wireless signals into intermediate frequency signals and/or optical signals.

Abstract: In one embodiment, a system wide static global stack pool in a contiguous range of random access memory is generated, a block of memory in the system global pool is assigned to a thread of a running process, and the thread stores local variable information in static global stack pool, such that the local variable is hidden from a stack frame back-trace. In one embodiment, a dynamically allocated data structure in system heap memory is generated, the data structure is locked to ensure atomic access, a block of memory in the data structure is assigned to a thread of a process, the data structure is unlocked, and the thread stores local variable information in static global stack pool, such that the local variable is hidden from a stack frame back-trace.