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OChen25's avatar
OChen25
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6 years ago

How to debug why OpenCL command queue stalled on Cyclone V SoC?

On Terasic DE10-Nano I've created an OpenCL BSP based on one originally modified from de10_nano_sharedonly. It works fine for programs like hello_world, 'aocl diagnose'. However, for vector_add, it r...
KennyT_altera's avatar
KennyT_altera
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6 years ago

Can you attached your kernal files and host for me to try it out?

OChen25's avatar
OChen25
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6 years ago

OK. In the attached vector_add.tgz you can find

  1. the opencl kernel source: vector_add/device/vecor_add.cl
  2. the host application source: vector_add/host/src/main.cpp

I got them as part of the OpenCL BSP of DE10-Nano from Terasic.

I guess its original source is the v17.1 Arm32 Linux package (.tar.gz) from:

https://www.intel.com/content/www/us/en/programmable/support/support-resources/design-examples/design-software/opencl/vector-addition.html

Please kindly understand that you won't duplicate this symptom on the official DE10-Nano OpenCL BSP from Terasic.

It only happens on the BSP I created.

Anyway, as I said in my original post, the symptom is: the host application will stop on the call to clWaitForEvents() (Line 361) in the second run of this host application.