摘要:
In a first aspect, a first method of synchronizing a plurality of processors of a system is provided. The first method includes the steps of (1) modifying a peripheral component interconnect express (PCIe) protocol to include a completion status encode associated with a synchronization command that indicates whether a condition of the synchronization command is met; (2) providing a system including (a) a memory; (b) a first processor coupled to the memory; (c) a second processor; and (d) an interconnect coupling the second processor to the first processor and the memory; and (3) employing the modified PCIe protocol on the interconnect. Numerous other aspects are provided.
摘要:
Embodiments of the invention provide methods and apparatus for increasing the number of page attributes specified by a page table while minimizing an increase in size of the page table. According to embodiments of the invention, attribute index bits may be included within a page table and may be used to determine page attributes stored within an attribute index. Additionally, embodiments of the invention provide a plurality of new page attributes.
摘要:
The present invention provides a method and apparatus for processing a bus protocol packet in order to provide accelerator support. A component receives a bus protocol packet having a requester identifier. The component looks up an agent routing field. The component routes the bus protocol packet to an accelerator agent based on the agent routing field. It processes the bus protocol packet at the accelerator agent based on the agent routing field.
摘要:
In a first aspect, a first method of synchronizing a plurality of processors of a system is provided. The first method includes the steps of (1) modifying a peripheral component interconnect express (PCIe) protocol to include a completion status encode associated with a synchronization command that indicates whether a condition of the synchronization command is met; (2) providing a system including (a) a memory; (b) a first processor coupled to the memory; (c) a second processor; and (d) an interconnect coupling the second processor to the first processor and the memory; and (3) employing the modified PCIe protocol on the interconnect. Numerous other aspects are provided.
摘要:
A system and method for performing computer processing operations in a data processing system includes a multithreaded processor and thread switch logic. The multithreaded processor is capable of switching between two or more threads of instructions which can be independently executed. Each thread has a corresponding state in a thread state register depending on its execution status. The thread switch logic contains a thread switch control register to store the conditions upon which a thread switch will occur. The thread switch logic has a time-out register which forces a thread switch when execution of the active thread in the multithreaded processor exceeds a programmable period of time. Thread switch logic also has a forward progress count register to prevent repetitive thread switching between threads in the multithreaded processor. Thread switch logic also is responsive to a software manager capable of changing the priority of the different threads and thus superseding thread switch events.