摘要:
A heterogeneous processor architecture and a method of booting a heterogeneous processor is described. A processor according to one embodiment comprises: a set of large physical processor cores; a set of small physical processor cores having relatively lower performance processing capabilities and relatively lower power usage relative to the large physical processor cores; and a package unit, to enable a bootstrap processor. The bootstrap processor initializes the homogeneous physical processor cores, while the heterogeneous processor presents the appearance of a homogeneous processor to a system firmware interface.
摘要:
Remapping technologies for execution context swap between heterogeneous functional hardware units are described. A computing system includes multiple registers configured to store remote contexts of functional units. A mapping table maps the remote context to the functional units. An execution unit is configured to execute a remapping tool that intercepts an operation to access a remote context of a first functional unit of the plurality of functional units that is taken offline. The remapping tool determines that the first functional unit is remapped to a second functional unit using the mapping table. The operation is performed to access the remote context that is remapped to the second functional unit. The first functional unit and the second functional unit may be heterogeneous functional units.
摘要:
A method and system for saving and/or retrieving context information of a processor core for a power state transition. The processor core resides in a complex power domain variously transitioning between a plurality of power states. The processor core includes a local context storage area for storage and retrieval of processor core context information. A low power context storage resides in a nominal power domain external to the complex power domain. Context information of the processor core is stored to the low power context storage based on whether a power state transition of the complex power domain includes a transition to power down the processor core.
摘要:
In some embodiments, a power up (or power mode) interface is provided whereby a chip's power up signals are encoded into multiple states to provide more functions than the number of signals used to define the states.
摘要:
Embodiments of systems, apparatuses, and methods for energy-efficient operation of a device are described. In some embodiments, a cache performance indicator of a cache is monitored, and a set of one or more cache performance parameters based on the cache performance indicator is determined. The cache is dynamically resized to an optimal cache size based on a comparison of the cache performance parameters to their energy-efficient targets to reduce power consumption.
摘要:
A method and system for dynamic or run-time reallocation of leakage current and dynamic power supply current of a processor. In one embodiment of the invention, the processor uses the variation in the leakage current of the processor to reduce the maximum current dissipation or power supply current of the processor (ICCmax). By reducing the maximum current dissipation, the system cost can be reduced as a less expensive power delivery system is required in one embodiment of the invention.
摘要:
A method and system for saving and/or retrieving context information of a processor core for a power state transition. The processor core resides in a complex power domain variously transitioning between a plurality of power states. The processor core includes a local context storage area for storage and retrieval of processor core context information. A low power context storage resides in a nominal power domain external to the complex power domain. Context information of the processor core is stored to the low power context storage based on whether a power state transition of the complex power domain includes a transition to power down the processor core.
摘要:
A method and system for saving and/or retrieving context information of a processor core for a power state transition. The processor core resides in a complex power domain variously transitioning between a plurality of power states. The processor core includes a local context storage area for storage and retrieval of processor core context information. A low power context storage resides in a nominal power domain external to the complex power domain. Context information of the processor core is stored to the low power context storage based on whether a power state transition of the complex power domain includes a transition to power down the processor core.