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chandrasekhar92's avatar
chandrasekhar92
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2 years ago
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Intel FPGA SDK for OpenCL: Issue while launching same opencl kernel multiple times

Hi, I am using Intel FPGA SDK for OpenCL to perform matrix multiplication on DE1-SoC board. As per my requirement I have to perform this multiplication multiple times and hence iterating over a loop...
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  • BoonBengT_Altera's avatar
    BoonBengT_Altera
    2 years ago

    Hi @chandrasekhar92,


    Noted that there seems to be a custom BSP involved. Is it correct to say there is no references design you are referring to and sample code are based on self written?


    After going through the situation, using clWaitForEvents to synchronize kernels in separate queues are working from previous experiences. Would recommend to try clFinish() which has similar purposes to see if that works.


    Also for the mention situation, it seem that the desire execution flow are out of order, hence below links would also explain that:

    - https://www.intel.cn/content/www/cn/zh/developer/articles/technical/opencl-out-of-order-queue-on-intel-processor-graphics.html


    Note: link mention are for example with GPU as the hardware, however the execution concept are the same.


    Best Wishes

    BB


BoonBengT_Altera's avatar
BoonBengT_Altera
Icon for Moderator rankModerator
2 years ago

Hi @chandrasekhar92,


Great! Good to know that it is working now and thanks for sharing your steps here with others, with no further clarification on this thread, it will be transitioned to community support for further help on doubts in this thread. Please login to ‘https://supporttickets.intel.com’, view details of the desire request, and post a feed/response within the next 15 days to allow me to continue to support you. After 15 days, this thread will be transitioned to community support.

Thank you for the questions and as always pleasure having you here.


Best Wishes

BB


p/s: If any answer from the community or Intel Support are helpful, please feel free to give best answer or rate 4/5 survey.