Lee William Howes

US Patent:

20130086565, Apr 4, 2013

Filed:

Sep 29, 2011

Appl. No.:

13/249154

Inventors:

Benedict R. Gaster - Santa Cruz CA, US
Lee W. Howes - Santa Clara CA, US

International Classification:

G06F 9/45

US Classification:

717148, 717146

Abstract:

A medium and method is disclosed for compiling vector programs. A compiler receives program code that includes a function invocation. The compiler determines the vector width of a target computer system and creates a width-specific executable version of the program code by mapping the function invocation to a width-specific implementation of the function. The width-specific implementation corresponds to the vector width of the target computer system.

US Patent:

20130086566, Apr 4, 2013

Filed:

Sep 29, 2011

Appl. No.:

13/249171

Inventors:

Benedict R. Gaster - Santa Cruz CA, US
Lee W. Howes - Santa Clara CA, US

International Classification:

G06F 9/45
G06F 15/76

US Classification:

717148, 717146, 712 7, 712E09001

Abstract:

A medium, method, and apparatus are disclosed for eliding superfluous function invocations in a vector-processing environment. A compiler receives program code comprising a width-contingent invocation of a function. The compiler creates a width-specific executable version of the program code by determining a vector width of a target computer system and omitting the function from the width-specific executable if the vector width meets one or more criteria. For example, the compiler may omit the function call if the vector width is greater than a minimum size.

US Patent:

20130117750, May 9, 2013

Filed:

Nov 3, 2011

Appl. No.:

13/288833

Inventors:

Lee W. HOWES - Santa Clara CA, US
Benedict R. Gaster - Santa Cruz CA, US
Michael C. Houston - Cupertino CA, US
Michael Mantor - Orlando FL, US
Mark Leather - Los Gatos CA, US
Norman Rubin - Cambridge MA, US
Brian D. Emberling - San Mateo CA, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

G06F 9/46

US Classification:

718102

Abstract:

Method, system, and computer program product embodiments for synchronizing workitems on one or more processors are disclosed. The embodiments include executing a barrier skip instruction by a first workitem from the group, and responsive to the executed barrier skip instruction, reconfiguring a barrier to synchronize other workitems from the group in a plurality of points in a sequence without requiring the first workitem to reach the barrier in any of the plurality of points.

US Patent:

20130191852, Jul 25, 2013

Filed:

Sep 7, 2012

Appl. No.:

13/606741

Inventors:

Lee W. Howes - Austin TX, US
Benedict R. Gaster - Santa Cruz CA, US
Michael Clair Houston - Cupertino CA, US
Michael Mantor - Orlando FL, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

G06F 9/46

US Classification:

719318

Abstract:

A system, method, and computer program product are provided for improving resource utilization of multithreaded applications. Rather than requiring threads to block while waiting for data from a channel or requiring context switching to minimize blocking, the techniques disclosed herein provide an event-driven approach to launch kernels only when needed to perform operations on channel data, and then terminate in order to free resources. These operations are handled efficiently in hardware, but are flexible enough to be implemented in all manner of programming models.

US Patent:

20130212350, Aug 15, 2013

Filed:

Feb 15, 2012

Appl. No.:

13/397391

Inventors:

Benedict R. Gaster - Santa Cruz CA, US
Lee W. Howes - Austin TX, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

G06F 12/02

US Classification:

711170, 711E12002

Abstract:

In a computing system, memory may be managed by using a distributed array, which is a global set of local memory regions. A segment in the distributed array is allocated and is bound to a physical memory region. The segment is used by a workgroup in a dispatched data parallel kernel, wherein a workgroup includes one or more work items. When the distributed array is declared, parameters of the distributed array may be defined. The parameters may include an indication whether the distributed array is persistent (data written to the distributed array during one parallel dispatch is accessible by work items in a subsequent dispatch) or an indication whether the distributed array is shared (nested kernels may access the distributed array). The segment may be deallocated after it has been used.

US Patent:

20130326524, Dec 5, 2013

Filed:

Nov 8, 2012

Appl. No.:

13/672291

Inventors:

Benedict R. Gaster - Santa Cruz CA, US
Lee W. Howes - Santa Clara CA, US
Michael Mantor - Orlando FL, US
Dominik Behr - San Jose CA, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

G06F 9/52

US Classification:

718102

Abstract:

Disclosed methods, systems, and computer program products embodiments include synchronizing a group of workitems on a processor by storing a respective program counter associated with each of the workitems, selecting at least one first workitem from the group for execution, and executing the selected at least one first workitem on the processor. The selecting is based upon the respective stored program counter associated with the at least one first workitem.

US Patent:

20130332937, Dec 12, 2013

Filed:

May 29, 2013

Appl. No.:

13/904791

Inventors:

Lee W. Howes - Santa Clara CA, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

G06F 9/50

US Classification:

718104

Abstract:

With the success of programming models such as OpenCL and CUDA, heterogeneous computing platforms are becoming mainstream. However, these heterogeneous systems are low-level, not composable, and their behavior is often implementation defined even for standardized programming models. In contrast, the method and system embodiments for the heterogeneous parallel primitives (HPP) programming model disclosed herein provide a flexible and composable programming platform that guarantees behavior even in the case of developing high-performance code.

US Patent:

20180060124, Mar 1, 2018

Filed:

Oct 30, 2017

Appl. No.:

15/797702

Inventors:

- Sunnyvale CA, US
Lee W. Howes - Sunnyvale CA, US

Assignee:

Advanced Micro Devices, Inc. - Sunnyvale CA

International Classification:

G06F 9/50

Abstract:

With the success of programming models such as OpenCL and CUDA, heterogeneous computing platforms are becoming mainstream. However, these heterogeneous systems are low-level, not composable, and their behavior is often implementation defined even for standardized programming models. In contrast, the method and system embodiments for the heterogeneous parallel primitives (HPP) programming model disclosed herein provide a flexible and composable programming platform that guarantees behavior even in the case of developing high-performance code.