Abstract: 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 a monitor to detect a condition indicating a low level of progress. The monitor can disrupt processing of a program by transferring to a handler in response to detecting the condition indicating a low level of progress. In another embodiment, thread switch logic may be coupled to a plurality of event monitors which monitor events within the multithreading execution logic. The thread switch logic switches threads based at least partially on a programmable condition of one or more of the performance monitors.

Abstract: 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.

Abstract: Methods and apparatuses for compiler-created helper thread for multi-threading are described herein. In one embodiment, exemplary process includes identifying a region of a main thread that likely has one or more delinquent loads, the one or more delinquent loads representing loads which likely suffer cache misses during an execution of the main thread, analyzing the region for one or more helper threads with respect to the main thread, and generating code for the one or more helper threads, the one or more helper threads being speculatively executed in parallel with the main thread to perform one or more tasks for the region of the main thread. Other methods and apparatuses are also described.

Abstract: 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.

Abstract: 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.

Abstract: Presented are embodiments of methods and systems for library-based compilation and dispatch to automatically spread computations of a program across heterogeneous cores in a processing system. The source program contains a parallel-programming keyword, such as mapreduce, from a high-level, library-oriented parallel programming language. The compiler inserts one or more calls for a generic function, associated with the parallel-programming keyword, into the compiled code. A runtime library provides a predicate-based library system that includes multiple hardware specific implementations (“variants”) of the generic function. A runtime dispatch engine dynamically selects the best-available (e.g., most specific) variant, from a bundle of hardware-specific variants, for a given input and machine configuration.

Abstract: 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.

Abstract: Thread-data affinity optimization can be performed by a compiler during the compiling of a computer program to be executed on a cache coherent non-uniform memory access (cc-NUMA) platform. In one embodiment, the present invention includes receiving a program to be compiled. The received program is then compiled in a first pass and executed. During execution, the compiler collects profiling data using a profiling tool. Then, in a second pass, the compiler performs thread-data affinity optimization on the program using the collected profiling data.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: Methods and apparatuses for compiler-created helper thread for multi-threading are described herein. In one embodiment, exemplary process includes identifying a region of a main thread that likely has one or more delinquent loads, the one or more delinquent loads representing loads which likely suffer cache misses during an execution of the main thread, analyzing the region for one or more helper threads with respect to the main thread, and generating code for the one or more helper threads, the one or more helper threads being speculatively executed in parallel with the main thread to perform one or more tasks for the region of the main thread. Other methods and apparatuses are also described.

Abstract: Embodiments described herein disclose a system for enabling emulation of a MIMD ISA extension which supports user-level sequencer management and control, and a set of privileged code executed by both operating system managed sequencers and application managed sequencers, including different sets of persistent per-CPU and per-thread data. In one embodiment, a lightweight code layer executes beneath the operating system. This code layer is invoked in response to particular monitored events, such as the need for communication between an operating system managed sequencer and an application managed sequencer. Control is transferred to this code layer, for execution of special operations, after which control returns back to originally executing code. The code layer is normally dormant and can be invoked at any time when either a user application or the operating system is executing.

Abstract: The latencies associated with retrieving instruction information for a main thread are decreased through the use of a simultaneous helper thread. The helper thread is permitted to execute Store instructions. Store blocker logic operates to prevent data associated with a Store instruction in a helper thread from being committed to memory. Dependence blocker logic operates to prevent data associated with a Store instruction in a speculative helper thread from being bypassed to a Load instruction in a non-speculative thread.

Abstract: Embodiments of the present invention provide a method, apparatus and system which may include splitting a dependency chain into a set of reduced-width dependency chains; mapping one or more dependency chains onto one or more clustered dependency chain processors, wherein an issue-width of one or more of the clusters is adapted to accommodate a size of the dependency chains; and/or processing in parallel a plurality of dependency chains of a trace. Other embodiments are described and claimed.

Abstract: 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.

Abstract: Presented are embodiments of methods and systems for library-based compilation and dispatch to automatically spread computations of a program across heterogeneous cores in a processing system. The source program contains a parallel-programming keyword, such as mapreduce, from a high-level, library-oriented parallel programming language. The compiler inserts one or more calls for a generic function, associated with the parallel-programming keyword, into the compiled code. A runtime library provides a predicate-based library system that includes multiple hardware specific implementations (“variants”) of the generic function. A runtime dispatch engine dynamically selects the best-available (e.g., most specific) variant, from a bundle of hardware-specific variants, for a given input and machine configuration.

Abstract: 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.

Abstract: 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 a monitor to detect a condition indicating a low level of progress. The monitor can disrupt processing of a program by transferring to a handler in response to detecting the condition indicating a low level of progress. In another embodiment, thread switch logic may be coupled to a plurality of event monitors which monitor events within the multithreading execution logic. The thread switch logic switches threads based at least partially on a programmable condition of one or more of the performance monitors.

Abstract: 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.