Abstract:
A microprocessor a plurality of processing cores, wherein each of the plurality of processing cores instantiates a respective architecturally-visible storage resource. A first core of the plurality of processing cores is configured to encounter an architectural instruction that instructs the first core to update the respective architecturally-visible storage resource of the first core with a value specified by the architectural instruction. The first core is further configured to, in response to encountering the architectural instruction, provide the value to each of the other of the plurality of processing cores and update the respective architecturally-visible storage resource of the first core with the value. Each core of the plurality of processing cores other than the first core is configured to update the respective architecturally-visible storage resource of the core with the value provided by the first core without encountering the architectural instruction.
Abstract:
A method and system for varying sampling frequency to avoid software harmonics when sampling digital power indicators are described herein. A power monitor may repetitively sample, at a variable sampling rate based on a variable delay time, multiple signals of an IC device to obtain energy values. The variable delay time may be based on a pseudo-random value or a predictable value. The variable delay time may indicate a number of delay cycles that may be inserted between the repetitive samples of the energy values. The variable number of delay cycles between energy value samples may produce a variable sampling rate. A variable sampling rate may avoid alignment with software harmonics which can cause an inaccurate representation of power consumption. The multiple samples obtained by repetitively sampling energy value for the portion of the IC may be summed to generate a cumulative energy value for the portion of the IC.
Abstract:
A microprocessor a plurality of processing cores, wherein each of the plurality of processing cores instantiates a respective architecturally-visible storage resource. A first core of the plurality of processing cores is configured to encounter an architectural instruction that instructs the first core to update the respective architecturally-visible storage resource of the first core with a value specified by the architectural instruction. The first core is further configured to, in response to encountering the architectural instruction, provide the value to each of the other of the plurality of processing cores and update the respective architecturally-visible storage resource of the first core with the value. Each core of the plurality of processing cores other than the first core is configured to update the respective architecturally-visible storage resource of the core with the value provided by the first core without encountering the architectural instruction.
Abstract:
A method and system for varying sampling frequency to avoid software harmonics when sampling digital power indicators are described herein. A power monitor may repetitively sample, at a variable sampling rate based on a variable delay time, multiple signals of an IC device to obtain energy values. The variable delay time may be based on a pseudo-random value or a predictable value. The variable delay time may indicate a number of delay cycles that may be inserted between the repetitive samples of the energy values. The variable number of delay cycles between energy value samples may produce a variable sampling rate. A variable sampling rate may avoid alignment with software harmonics which can cause an inaccurate representation of power consumption. The multiple samples obtained by repetitively sampling energy value for the portion of the IC may be summed to generate a cumulative energy value for the portion of the IC.
Abstract:
A microprocessor a plurality of processing cores, wherein each of the plurality of processing cores instantiates a respective architecturally-visible storage resource. A first core of the plurality of processing cores is configured to encounter an architectural instruction that instructs the first core to update the respective architecturally-visible storage resource of the first core with a value specified by the architectural instruction. The first core is further configured to, in response to encountering the architectural instruction, provide the value to each of the other of the plurality of processing cores and update the respective architecturally-visible storage resource of the first core with the value. Each core of the plurality of processing cores other than the first core is configured to update the respective architecturally-visible storage resource of the core with the value provided by the first core without encountering the architectural instruction.
Abstract:
A microprocessor includes a plurality of processing cores and an uncore random access memory (RAM) readable and writable by each of the plurality of processing cores. Each core of the plurality of processing cores comprises microcode run by the core that implements architectural instructions of an instruction set architecture of the microprocessor. The microcode is configured to both read and write the uncore RAM to accomplish inter-core communication between the plurality of processing cores.
Abstract:
A graphics processing system and a power gating method thereof is provided. The graphics processing system includes a bus interface, a graphics processing unit, and a power management unit. The graphics processing unit includes a plurality of partitions and a control circuit. When the bus interface has received an external graphics processing command, the bus interface informs the power management unit to turn on power to the control circuit. The control circuit turns on power to one or more of the partitions corresponding to the external graphics processing command after analyzing the external graphics processing command. The control circuit turns off power to the partitions in the idle state when detecting that one of the partitions is in the idle state. The bus interface turns off the power to the control circuit via the power management circuit when detecting that the partitions are in a full idle state.
Abstract:
A method for automatically scaling estimates of digital power consumed by a portion of an integrated circuit (IC) device by the operating frequency of the portion of the IC are described herein. The method may include obtaining an energy value which may correspond to an amount of energy used by the portion of the IC. A cumulative energy value may be generated by repeatedly, at a frequency proportional to the operating frequency of the portion of the IC, obtaining energy values and adding each obtained energy value to a sum of energy values for the portion of the IC. The cumulative energy value may be sampled at a time sample interval to generate an estimate of the portion of the IC's digital power consumption that is automatically scaled with the operating frequency of the portion of the IC.
Abstract:
A microprocessor includes a plurality of processing cores, a service processing unit and a memory accessible by both the service processing unit and the plurality of processing cores. At least one of the plurality of processing cores is configured to write a patch to the memory. The patch comprises one or more instructions to be fetched from the memory and executed by the service processing unit after written to the memory by the at least one of the plurality of processing cores.
Abstract:
A method for automatically scaling estimates of digital power consumed by a portion of an integrated circuit (IC) device by the operating frequency of the portion of the IC are described herein. The method may include obtaining an energy value which may correspond to an amount of energy used by the portion of the IC. A cumulative energy value may be generated by repeatedly, at a frequency proportional to the operating frequency of the portion of the IC, obtaining energy values and adding each obtained energy value to a sum of energy values for the portion of the IC. The cumulative energy value may be sampled at a time sample interval to generate an estimate of the portion of the IC's digital power consumption that is automatically scaled with the operating frequency of the portion of the IC.