摘要:
In one embodiment, a processing node includes a plurality of processor cores and a reconfigurable interconnect. The processing node also includes a controller configured to schedule transactions received from each processor core. The interconnect may be coupled to convey between a first processor core and the controller, transactions that each include a first corresponding indicator that indicates the source of the transaction. The interconnect may also be coupled to convey transactions between a second processor core and the controller, transactions that each include a second corresponding indicator that indicates the source of the transaction. When operating in a first mode, the interconnect is configurable to cause the first indicator to indicate that the corresponding transactions were conveyed from the second processor core and to cause the second indicator to indicate that the corresponding transactions were conveyed from the first processor core.
摘要:
A method and apparatus for securely storing and accessing processor state information in random access memory (RAM) at a time when the processor enters an inactive power state.
摘要:
A data processing device is disclosed that includes multiple processing cores, where each core is associated with a corresponding cache. When a processing core is placed into a first sleep mode, the data processing device initiates a first phase. If any cache probes are received at the processing core during the first phase, the cache probes are serviced. At the end of the first phase, the cache corresponding to the processing core is flushed, and subsequent cache probes are not serviced at the cache. Because it does not service the subsequent cache probes, the processing core can therefore enter another sleep mode, allowing the data processing device to conserve additional power.
摘要:
In one embodiment, a method comprises assigning a unique node number to each of a first plurality of nodes in a first partition of a system and a second plurality of nodes in a second partition of the system. A first memory address space spans first memory included in the first partition and a second memory address space spans second memory included in the second partition. The first memory address space and the second memory address space are generally logically distinct. The method further comprises programming a first address map in the first partition to map the first memory address space to node numbers, wherein the programming comprises mapping a first memory address range within the first memory address space to a first node number assigned to a first node of the second plurality of nodes in the second partition, whereby the first memory address range is mapped to the second partition.
摘要:
A register array system including a first number of rows by a second number of columns of data registers, a read line, a read bit line, and a single pull down device corresponding to each data register in each column of data registers and configured to discharge, in response to being turned on, the read bit line corresponding to the column of data registers. The pull down device corresponding to a data register is only turned in response to a clock signal, a read enable signal, and the data stored in the data register each having a high value. Therefore, the capacitance associated with the read bit line corresponding to a column of data registers stays at the same capacitance value during the precharging phase and during a multi-hot condition. The problem of voltage droop caused by charging sharing in a multi-hot condition is thus eliminated.
摘要:
A method and apparatus for accelerated shared data migration between cores. Using an Always Migrate protocol, when a migratory probe hits a directory entry in either modified or owned state, the entry is transitioned to an owned state, and a source done command is sent without sending cache block ownership or state information to the directory.
摘要:
An error injection module for injecting errors into an ECC memory selects a target address associated with the ECC memory, selects an error injection pattern, and sets a redirect address of the scrubber to the target address. During an injection mode of the scrubber, the error injection module injects the error injection pattern into the target address of the ECC memory with the scrubber.
摘要:
In one embodiment, a node comprises a plurality of processor cores and a node controller configured to receive a first read operation addressing a first register. The node controller is configured to return a first value in response to the first read operation, dependent on which processor core transmitted the first read operation. In another embodiment, the node comprises the processor cores and the node controller. The node controller comprises a queue shared by the processor cores. The processor cores are configured to transmit communications at a maximum rate of one every N clock cycles, where N is an integer equal to a number of the processor cores. In still another embodiment, a node comprises the processor cores and a plurality of fuses shared by the processor cores. In some embodiments, the node components are integrated onto a single integrated circuit chip (e.g. a chip multiprocessor).
摘要:
In one embodiment, a method comprises assigning a unique node number to each of a first plurality of nodes in a first partition of a system and a second plurality of nodes in a second partition of the system. A first memory address space spans first memory included in the first partition and a second memory address space spans second memory included in the second partition. The first memory address space and the second memory address space are generally logically distinct. The method further comprises programming a first address map in the first partition to map the first memory address space to node numbers, wherein the programming comprises mapping a first memory address range within the first memory address space to a first node number assigned to a first node of the second plurality of nodes in the second partition, whereby the first memory address range is mapped to the second partition.