Nvidia Corporation

Siva Hari

Timothy Tsai

Stephen William Keckler

Michael Brendan Sullivan

Brian Matthew Zimmer

Saurabh Jha

Michael Sullivan

Abdulrahman Mahmoud

Tim Tsai

Systems and methods for detecting hardware faults in computer-based feedback control systems. Multiple instances of the system control program(s) are run on system processors. System sensor data are input to each instance, and the control commands output by each instance are compared. As instantiations of the same programs receive largely the same sensor data, differences between output commands may indicate the presence of one or more hardware faults.

Hardware fault detection for feedback control systems in autonomous machine applications

An error reporting system utilizes a parity checker to receive data results from execution of an original instruction and a parity bit for the data. A decoder receives an error correcting code (ECC) for data resulting from execution of a shadow instruction of the original instruction, and data error correction is initiated on the original instruction result on condition of a mismatch between the parity bit and the original instruction result, and the decoder asserting a correctable error in the original instruction result.

System and methods for hardware-software cooperative pipeline error detection

Software-only and software-hardware optimizations to reduce the overhead of intra-thread instruction duplication on a GPU or other instruction processor are disclosed. The optimizations trade off error containment for performance and include ISA extensions with limited hardware changes and area costs.

Optimizing software-directed instruction replication for GPU error detection

A family of software-hardware cooperative mechanisms to accelerate intra-thread duplication leverage the register file error detection hardware to implicitly check the data from duplicate instructions, avoiding the overheads of instruction checking and enforcing low-latency error detection with strict error containment guarantees.

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Siva Hari