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TSchw11's avatar
TSchw11
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5 years ago

Getting "HAL Kern Error: Read/Write failed from addr x, read y expected z" when running multithread OpenCL application on CycloneV SoC

To ensure, that I didn't just write an incorrect program, I used the standard multithread example: https://www.intel.com/content/www/us/en/programmable/support/support-resources/design-examples/desig...
AnilErinch_A_Intel's avatar
AnilErinch_A_Intel
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5 years ago

Hi are you using a custom made board for running the openCL.

In that case please use the following api in the code aocl_mmd_get_info

and let us know the results.

In particular we would be interested in results with following

AOCL_MMD_BOARD_NAME

AOCL_MMD_CONCURRENT_READS Number of parallel reads( A value of 1 indicates serial reads.)

AOCL_MMD_CONCURRENT_WRITES Number of parallel writes (A value of 1 indicates serial writes).

AOCL_MMD_CONCURRENT_READS_OR_WRITE S Total number of concurrent read and write operations .

Please refer here

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/opencl-sdk/ug_aocl_custom_platform_toolkit.pdf

jackgreen's avatar
jackgreen
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4 years ago

Hi I am having a similar problem on the de10 nano board. After checking the corresponding source code, I found out that the MMD library is of version 14.1 and it does not have AOCL_MMD_CONCURRENT_READS and AOCL_MMD_CONCURRENT_WRITES defined. So I guess it might be the problem? And how shall we update this library? Is there any off-the-shelf code I could take advantage of?

Thanks!