Nvidia Corporation

Geoffrey Gerfin

Mark Hairgrove

Vyas Venkataraman

Steven E Molnar

Lacky V Shah

Wishwesh Anil Gandhi

Stephen Jones

Jeffrey M Smith

Hemayet Hossain

Jonathon Stuart Ramsay Evans

Mayank Kaushik

Alban Douillet

Riley Andrews

Piyush Patel

Vikram Sethi

Terje Bergstrom

Various embodiments include techniques for accessing extended memory in a parallel processing system via a high-bandwidth path to extended memory residing on a central processing unit. The disclosed extended memory system extends the directly addressable high-bandwidth memory local to a parallel processing system and avoids the performance penalties associated with low-bandwidth system memory. As a result, execution threads that are highly parallelizable and access a large memory space execute with increased performance on a parallel processing system relative to prior approaches.

High bandwidth extended memory in a parallel processing system

A system and method for debugging an executing program. The method includes executing a general-purpose computing on graphics processing units (GPGPU) program. The GPGPU program comprises a first portion operable to execute on a central processing unit (CPU) and a second portion operable to execute on a graphics processing unit (GPU). The method further includes attaching a debugging program to the first portion of the GPGPU program and modifying the first portion of the GPGPU program. The attaching of the debugging program to the first portion of the GPGPU program pauses execution of the first portion of the GPGPU program. The method further includes resuming execution of the first portion of the GPGPU program and accessing a first state information corresponding to the first portion of the GPGPU program. Execution of the first portion of the GPGPU program may then be paused. The first state information may then be used to access a second state information corresponding to the second portion of the GPGPU program.

System and method for debugging an executing general-purpose computing on graphics processing units (GPGPU) application

One embodiment of the present invention sets forth a technique for emitting coherent output from multiple threads for the printf( ) function. Additionally, parallel (not divergent) execution of the threads for the printf( ) function is maintained when possible to improve run-time performance. Processing of the printf( ) function is separated into two tasks, gathering of the per thread data and formatting the gathered data according to the formatting codes for display. The threads emit a coherent stream of contiguous segments, where each segment includes the format string for the printf( ) function and the gathered data for a thread. The coherent stream is written by the threads and read by a display processor. The display processor executes a single thread to format the gathered data according to the format string for display.

Emitting coherent output from multiple threads for printf

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Sunnyvale, CA, United States of America

Geoffrey Gerfin