摘要:
Instruction-level parallelism in software pipelined loops is exploited by predicting future register rotations. A processor includes an architected current frame marker register and at least one unarchitected frame marker register. Register rotation prediction is achieved by setting the register rotation of future iterations of a software loop to be a function of the unarchitected frame marker registers. True data dependencies remain, but the dependencies caused solely by register renaming are removed. Dynamic predication is used to predicate instructions from future iterations, allowing them to be squashed if dependencies are later found. The register renaming that results from the prediction can be included in instructions in a buffer, or a renaming stage in an execution pipeline can perform the renaming.
摘要:
A method and system to provide user-level multithreading are disclosed. The method according to the present techniques comprises receiving programming instructions to execute one or more shared resource threads (shreds) via an instruction set architecture (ISA). One or more instruction pointers are configured via the ISA; and the one or more shreds are executed simultaneously with a microprocessor, wherein the microprocessor includes multiple instruction sequencers.
摘要:
In one embodiment, the present invention includes a method for receiving a request from a user-level agent for programming of a user-level privilege for at least one architectural resource of an application-managed sequencer (AMS) and programming the user-level privilege for the at least one architectural resource using an operating system-managed sequencer (OMS) coupled to the AMS. Other embodiments are described and claimed.
摘要:
Method, apparatus, and program means for a programmable event driven yield mechanism that may activate other threads. In one embodiment, an apparatus includes execution resources to execute a plurality of instructions and an event detector to detect a long latency event associated with a synchronization object. The event detector can cause a first thread switch in response to the long latency event associated with the synchronization object. The apparatus may also include a spin detector to detect that the synchronization object is a contended synchronization object. The spin detector can cause a second thread switch in response to the detection of the contended synchronization object to enable a spin detect response.
摘要:
In one embodiment, the present invention includes a method for receiving a request from a user-level agent for programming of a user-level privilege for at least one architectural resource of an application-managed sequencer (AMS) and programming the user-level privilege for the at least one architectural resource using an operating system-managed sequencer (OMS) coupled to the AMS. Other embodiments are described and claimed.
摘要:
In one embodiment, the present invention includes a method for communicating an assertion signal from a first instruction sequencer to a plurality of accelerators coupled to the first instruction sequencer via a dedicated interconnect, detecting the assertion signal in the accelerators and communicating a request for a lock on a second interconnect coupled to the first instruction sequencer and the accelerators, and registering an accelerator that achieves the lock by communication of a registration message for the accelerator to the first instruction sequencer via the second interconnect. Other embodiments are described and claimed.
摘要:
Compiling a source code program for a heterogeneous multi-core processor having a first instruction sequencer, having a first instruction set architecture, an accelerator to the first instruction sequencer, wherein the accelerator comprises a heterogeneous resource with respect to the first instruction sequencer having a second instruction set architecture, the source code program having specified therein a region of source code for the first instruction set architecture of the processor and a region of source code for the second instruction set architecture of the processor.
摘要:
In one embodiment, the present invention includes a method for communicating an assertion signal from a first instruction sequencer to a plurality of accelerators coupled to the first instruction sequencer, detecting the assertion signal in the accelerators and communicating a request for a lock, and registering an accelerator that achieves the lock by communication of a registration message for the accelerator to the first instruction sequencer. Other embodiments are described and claimed.
摘要:
In one embodiment, the present invention includes a method for communicating an assertion signal from a first instruction sequencer to a plurality of accelerators coupled to the first instruction sequencer, detecting the assertion signal in the accelerators and communicating a request for a lock, and registering an accelerator that achieves the lock by communication of a registration message for the accelerator to the first instruction sequencer. Other embodiments are described and claimed.
摘要:
In one embodiment, the present invention includes a method for communicating an assertion signal from a first instruction sequencer to a plurality of accelerators coupled to the first instruction sequencer, detecting the assertion signal in the accelerators and communicating a request for a lock, and registering an accelerator that achieves the lock by communication of a registration message for the accelerator to the first instruction sequencer. Other embodiments are described and claimed.