摘要:
A processor saves micro-architectural contexts to increase the efficiency of code execution and power management. Power management hardware during runtime monitors execution of a code block. The code block has been compiled to have a reserved space appended to one end of the code block. The reserved space includes a metadata block associated with the code block or an identifier of the metadata block. The hardware stores a micro-architectural context of the processor in the metadata block. The micro-architectural context includes performance data resulting from a first execution of the code block. The hardware reads the metadata block upon a second execution of the code block and tunes the second execution based on the performance data.
摘要:
In one embodiment, the present invention includes a multicore processor having first and second cores to independently execute instructions, the first core visible to an operating system (OS) and the second core transparent to the OS and heterogeneous from the first core. A task controller, which may be included in or coupled to the multicore processor, can cause dynamic migration of a first process scheduled by the OS to the first core to the second core transparently to the OS. Other embodiments are described and claimed.
摘要:
An apparatus and method are described for coupling a front end core to an accelerator component (e.g., such as a graphics accelerator). For example, an apparatus is described comprising: an accelerator comprising one or more execution units (EUs) to execute a specified set of instructions; and a front end core comprising a translation lookaside buffer (TLB) communicatively coupled to the accelerator and providing memory access services to the accelerator, the memory access services including performing TLB lookup operations to map virtual to physical addresses on behalf of the accelerator and in response to the accelerator requiring access to a system memory.
摘要:
An asymmetric multiprocessor system (ASMP) may comprise computational cores implementing different instruction set architectures and having different power requirements. Program code executing on the ASMP is analyzed by a binary analysis unit to determine what functions are called by the program code and select which of the cores are to execute the program code, or a code segment thereof. Selection may be made to provide for native execution of the program code, to minimize power consumption, and so forth. Control operations based on this selection may then be inserted into the program code, forming instrumented program code. The instrumented program code is then executed by the ASMP.
摘要:
Methods and apparatus relating to power management for multiple processor cores are described. In one embodiment, one or more techniques may be utilized locally (e.g., on a per core basis) to manage power consumption in a processor. In another embodiment, power may be distributed among different power planes of a processor based on energy-based considerations. Other embodiments are also disclosed and claimed.
摘要:
A method for dynamically operating a multi-core processor system is provided. The method involves ascertaining currently active processor cores, identifying a currently active processor core having a lowest operating frequency, and adjusting at least one operational parameter according to voltage-frequency characteristics corresponding to the identified processor core to fulfill a predefined functional mode, e.g. power optimization mode, performance optimization mode and mixed mode.
摘要:
A new class traces for a processing engine, called “extended blocks,” possess an architecture that permits possible many entry points but only a single exit point. These extended blocks may be indexed based upon the address of the last instruction therein. Use of the new trace architecture provides several advantages, including reduction of instruction redundancies, dynamic block extension and a sharing of instructions among various extended blocks.
摘要:
A method for dynamically operating a multi-core processor system is provided. The method involves ascertaining currently active processor cores, identifying a currently active processor core having a lowest operating frequency, and adjusting at least one operational parameter according to voltage-frequency characteristics corresponding to the identified processor core to fulfill a predefined functional mode, e.g. power optimization mode, performance optimization mode and mixed mode.
摘要:
In one embodiment, the present invention includes a method for protecting a value to be stored in a register of a register file with a first level of protection if the value is predicted to be used for a first time period, and protecting the value with a second level of protection if the value is predicted to be used for a second time period. Other embodiments are described and claimed.
摘要:
A power aware front-end unit for a processor may include a UOP cache that disables other circuitry within the front-end unit. In an embodiment, a front-end unit may disable instruction synchronization circuitry, instruction decode circuitry and, optionally, instruction fetch circuitry while instruction look-ups are underway in both a block cache and an instruction cache. If the instruction look-up indicates a miss, the disabled circuitry thereafter may be enabled.