Abstract:
Methods and apparatus relating to provision of core tightly coupled lockstep for high functional safety are described. In an embodiment, a master core, coupled to a slave core, executes one or more operations to support Advanced Driver Assistance Systems (ADA) or autonomous driving. The master core and the slave core receive the same input signal and core tightly couple logic causes generation of a signal in response to comparison of a first output from the master core and a second output from the slave core. The generated signal causes an interruption of the one or more operations in response to a mismatch between the first output and the second output. Other embodiments are also disclosed and claimed.
Abstract:
Systems and methods may provide for determining, in a first domain that manages a state of a second domain, that the second domain is in the state and determining, in the first domain, that a periodic action has been scheduled to occur in the second domain while the second domain is in the state. Additionally, the periodic action may be documented as a missed event with respect to the second domain. In one example, documenting the periodic action as a missed event includes incrementing a missed event counter.
Abstract:
In one embodiment, a processor includes a core to execute instructions and a core perimeter logic coupled to the core. The core perimeter logic may include a fabric interface logic coupled to the core. In turn, the fabric interface logic may include a first storage to store state information of the core when the core is in a low power state, and enable an inter-die interconnect coupled between the core and an uncore to be maintained in an active state during entry of the core into a low power state. Other embodiments are described and claimed.
Abstract:
In one embodiment, a processor includes a core to execute instructions and a core perimeter logic coupled to the core. The core perimeter logic may include a fabric interface logic coupled to the core. In turn, the fabric interface logic may include a first storage to store state information of the core when the core is in a low power state, and enable an inter-die interconnect coupled between the core and an uncore to be maintained in an active state during entry of the core into a low power state. Other embodiments are described and claimed.
Abstract:
In one embodiment, the present invention includes a multicore processor having a variable frequency domain including a plurality of cores and at least a portion of non-core circuitry of the processor. This non-core portion can include a cache memory, a cache controller, and an interconnect structure. In addition to this variable frequency domain, the processor can further have a fixed frequency domain including a power control unit (PCU). This unit may be configured to cause a frequency change to the variable frequency domain without draining the non-core portion of pending transactions. Other embodiments are described and claimed.