Rockwell Collins, Inc.

Victor C Ashby

Travis S VanDerKamp

Marcin Kolesinski

Nathan W Hill

A system may include a graphics processing unit (GPU) and a processor. The GPU may include a GPU core and non-error-detection-and-correction (non-EDAC) graphics memory. The graphics memory may contain a data object and a copy of the data object. The processor may be configured to: instruct the GPU to handle the data object and the copy of the data object as textures; and instruct the GPU to execute a texture comparison shader program. The GPU core may be configured to: execute the texture comparison shader program; compare the data object and the copy of the data object; generate comparison results; and output the comparison results as pixels to an off-screen area of a framebuffer. The processor may further be configured to: obtain (a) a hash value of the off-screen area, or (b) the off-screen area; and determine whether the comparison results are at least one expected value.

System and method for determining error occurrence in graphics memory of graphics processing unit

The system assures the proper operation of a programmable GPU. A list of shader programs is generated. A programmable GPU is instructed to render a set of graphic primitives to generate test image data into a test area of RAM of the GPU utilizing one of the listed programs. The GPU is instructed to combine test image data from the test area with normal image data to form a composite image as display image data. The data in the GPU RAM is output to an image processing unit (IPU), wherein the data is processed by the IPU. The IPU is utilized to apply a CRC algorithm to the test image data to calculate a check value. The calculated value is compared against a predetermined value for the test area. A fault is reported if the calculated check value does not match the predetermined value. These above steps are then repeated.

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Draper, UT, United States of America

Victor C Ashby