Tile-based check values for data content integrity in a gpu subsystem

An apparatus configured for graphics processing, the apparatus comprising:

• one or more memories;
• and
• a graphics processing unit (GPU) in communication with the one or memories via one or more buses, wherein a GPU subsystem comprises the one or more memories, the GPU, and the one or more buses, the GPU being configured to:
• process graphics data to produce a plurality of portions of a first image;
• generate a plurality of data integrity check values associated with the plurality of portions of the first image, wherein each one of the plurality of data integrity check values is associated with a corresponding portion of the first image;
• process the graphics data to produce a portion of a second image, wherein processing the graphics data to produce the portion of the second image includes producing fewer portions than every portion of the second image;
• generate a data integrity check value associated with the portion of the second image;
• determine whether the portion of the second image matches a corresponding one of the plurality of portions of the first image by comparing the data integrity check values associated with the portion of the second image with a corresponding one of the plurality of data integrity check values associated with the plurality of portions of the first image;
• and
• determine whether an operational fault has occurred in the GPU subsystem based at least in part on the determination of whether the portion of the second image matches the corresponding one of the plurality of portions of the first image.

An apparatus configured for graphics processing, the apparatus comprising:

• means for processing graphics data to produce a plurality of portions of a first image;
• means for generating a plurality of data integrity check values associated with the plurality of portions of the first image, wherein each one of the plurality of data integrity check values is associated with a corresponding portion of the first image;
• means for processing the graphics data to produce a portion of a second image, wherein the means for processing the graphics data to produce the portion of the second image includes means for producing fewer portions than every portion of the second image;
• means for generating a data integrity check value associated with the portion of the second image;
• means for determining whether the portion of the second image matches a corresponding one of the plurality of portions of the first image, including means for comparing the data integrity check value associated with the portion of the second image with a corresponding one of the plurality of data integrity check values associated with the plurality of portions of the first image;
• and
• means for determining whether an operational fault has occurred in the GPU subsystem based at least in part on the determination of whether the portion of the second image matches the corresponding one of the plurality of portions of the first image.

A computer-readable storage medium storing instructions that, when executed, cause one or more processors to:

• process graphics data to produce a plurality of portions of a first image;
• generate a plurality of data integrity check values associated with the plurality of portions of the first image, wherein each one of the plurality of data integrity check values is associated with a corresponding portion of the first image;
• process the graphics data to produce a portion of a second image, wherein processing the graphics data to produce the portion of the second image includes producing fewer portions of the second image;
• generate a data integrity check value associated with the portion of the second image;
• determine whether the portion of the second image matches a corresponding one of the plurality of portions of the first image by comparing the plurality of data integrity check value associated with the portion of the second image with a corresponding one of the plurality of data integrity check values associated with the plurality of portions of the first image;
• and
• determine whether an operational fault has occurred in the GPU subsystem based at least in part the determination of whether the portion of the second image matches the corresponding one of the plurality of portions of the first image.