Intel Corporation

Yuval Yosef

Ilan Pardo

Oren Ben-Kiki

Dror Markovich

Eliezer Weissmann

Robert Valentine

Hong Jiang

Alon Naveh

Efraim Rotem

Hong Wang

Baiju V Patel

Per H Hammarlund

Gad Shlomo Sheaffer

Gautham N Chinya

John Thomas Shen

Dion Rodgers

Bryant E Bigbee

Richard A Hankins

James Paul Held

Shiv Kaushik

Yoav Talgam

Doron Rajwan

Ronny Ronen

Boris Ginzburg

Ron Gabor

David A Koufaty

Michael Mishaeli

Anil Aggarwal

Scott D Hahn

Pedro Marcuello

James Varga

Gady Yearim

Enrique De Lucas

Dheeraj R Subbareddy

Eugene Gorbatov

Guy M Therien

Eric DiStefano

Ganapati Srinivasa

Aamer Jaleel

Paolo L Narvaez

Avi Mendelson

Tong Li

Hisham Abu-Salah

Ilya Osadchiy

Jim Hermerding

Ronny Korner

Kenzo Van Craeynest

Avi Mendleson

An apparatus and method are described for executing both latency-optimized execution logic and throughput-optimized execution logic on a processing device. For example, a processor according to one embodiment comprises: latency-optimized execution logic to execute a first type of program code; throughput-optimized execution logic to execute a second type of program code, wherein the first type of program code and the second type of program code are designed for the same instruction set architecture; logic to identify the first type of program code and the second type of program code within a process and to distribute the first type of program code for execution on the latency-optimized execution logic and the second type of program code for execution on the throughput-optimized execution logic.

Apparatus and method for a hybrid latency-throughput processor

A processor is described having logic circuitry of a general purpose CPU core to save multiple copies of context of a thread of the general purpose CPU core to prepare multiple micro-threads of a multi-threaded accelerator for execution to accelerate operations for the thread through parallel execution of the micro-threads.

Apparatus and method for invocation of a multi threaded accelerator

In one embodiment, the present invention includes a multicore processor having first and second cores to independently execute instructions, the first core visible to an operating system (OS) and the second core transparent to the OS and heterogeneous from the first core. A task controller, which may be included in or coupled to the multicore processor, can cause dynamic migration of a first process scheduled by the OS to the first core to the second core transparently to the OS. Other embodiments are described and claimed.

Migrating tasks between asymmetric computing elements of a multi-core processor

A processor having one or more processing cores is described. Each of the one or more processing cores has front end logic circuitry and a plurality of processing units. The front end logic circuitry is to fetch respective instructions of threads and decode the instructions into respective micro-code and input operand and resultant addresses of the instructions. Each of the plurality of processing units is to be assigned at least one of the threads, is coupled to said front end unit, and has a respective buffer to receive and store microcode of its assigned at least one of the threads. Each of the plurality of processing units also comprises: i) at least one set of functional units corresponding to a complete instruction set offered by the processor, the at least one set of functional units to execute its respective processing unit's received microcode; ii) registers coupled to the at least one set of functional units to store operands and resultants of the received microcode; iii) data fetch circuitry to fetch input operands for the at least one functional units' execution of the received microcode.

Processing core having shared front end unit

A semiconductor chip is described having a load collision detection circuit comprising a first bloom filter circuit. The semiconductor chip has a store collision detection circuit comprising a second bloom filter circuit. The semiconductor chip has one or more processing units capable of executing ordered parallel threads coupled to the load collision detection circuit and the store collision detection circuit. The load collision detection circuit and the store collision detection circuit is to detect younger stores for load operations of said threads and younger loads for store operations of said threads.

Memory address collision detection of ordered parallel threads with bloom filters

An apparatus and method are described for providing low-latency invocation of accelerators. For example, a processor according to one embodiment comprises execution logic to execute a plurality of instructions including an accelerator invocation instruction to invoke one or more accelerator commands. The accelerator invocation instruction stores command data specifying the command within a command register. One or more accelerators read the command data from the command register and responsively attempt to execute the command identified by the command data. Upon a switch from a first context to a second context, an accelerator context save/restore pointer identifies a region within system memory where the accelerator is to save its state and later the accelerator context save/restore pointer aids in restoring its state upon returning to the first context.

Apparatus and method for low-latency invocation of accelerators

An apparatus and method are described for providing low-latency invocation of accelerators. For example, a system according to one embodiment comprises: a processor includes a plurality of simultaneous multithreading (SMT) cores, at least one shared cache circuit to be shared among two or more of the SMT cores; and at least one of the SMT cores including at least one level 2 (L2) cache circuit to store both instructions and data and communicatively coupled to the instruction cache circuit and the data cache circuit, a communication interconnect circuit including a peripheral component interconnect express (PCIe) circuit to communicatively couple one or more of the SMT cores to an accelerator device and a memory access circuit to identify an accelerator context save/restore region in a memory responsive to a context save/restore value, the accelerator context save/restore region to share an accelerator context state.

An apparatus and method are described for providing low-latency invocation of accelerators. For example, a processor according to one embodiment comprises: a plurality of simultaneous multithreading (SMT) cores, at least one shared cache circuit to be shared among the SMT cores, and at least one L2 cache circuit to store both instructions and data. The processor further comprises a communication interconnect circuit including a PCIe circuit to communicatively couple one or more of the SMT cores to an accelerator device, the PCIe circuit to provide the accelerator device access to resources of the processor including the at least one shared cache circuit. The processor further comprises a memory access circuit to identify an accelerator context save/restore region in a memory determined by an accelerator context save/restore value, the accelerator context save/restore region to store an accelerator context state.

In one embodiment, the present invention includes a multicore processor with first and second groups of cores. The second group can be of a different instruction set architecture (ISA) than the first group or of the same ISA set but having different power and performance support level, and is transparent to an operating system (OS). The processor further includes a migration unit that handles migration requests for a number of different scenarios and causes a context switch to dynamically migrate a process from the second core to a first core of the first group. This dynamic hardware-based context switch can be transparent to the OS. Other embodiments are described and claimed.

Providing an asymmetric multicore processor system transparently to an operating system

In one embodiment, the present invention includes a method for directly communicating between an accelerator and an instruction sequencer coupled thereto, where the accelerator is a heterogeneous resource with respect to the instruction sequencer. An interface may be used to provide the communication between these resources. Via such a communication mechanism a user-level application may directly communicate with the accelerator without operating system support. Further, the instruction sequencer and the accelerator may perform operations in parallel. Other embodiments are described and claimed.

Instruction set architecture-based inter-sequencer communications with a heterogeneous resource

An apparatus and method are described for providing low-latency invocation of accelerators. For example, a processor according to one embodiment comprises: a command register for storing command data identifying a command to be executed; a result register to store a result of the command or data indicating a reason why the command could not be executed; execution logic to execute a plurality of instructions including an accelerator invocation instruction to invoke one or more accelerator commands; and one or more accelerators to read the command data from the command register and responsively attempt to execute the command identified by the command data.

Growing community of inventors

Hadera, Israel

Yuval Yosef