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KLee24's avatar
KLee24
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7 years ago

Query Kernel names and address with mmd user APIs.

I am currently making a program using mmd library user API since the program will use custom platform of mine. Problem is this. I still use aoc compiled .cl kernels for device execution and if i make kernels more than two, it seems address are not aligned in order i wrote the code so i have to manually find out their order. OpenCL uses kernel name to set arguments and enqueue so I thought there must be some space storing that information on device and I could query. Anybody got a clue?

5 Replies

  • MelvinSwee_T_Intel's avatar
    MelvinSwee_T_Intel
    Icon for Occasional Contributor rankOccasional Contributor
    7 years ago

    Hi,

    I am reviewing all the open questions on the forums and found this thread of yours. I apologize that no one seems to answer this question that you posted. Since it has been a few days since you posted this question, I am wondering if you have found the answer? If not, I can assign someone to assist you. Let me know. Thanks.

    Regards,

    Melvin

  • KLee24's avatar
    KLee24
    Icon for New Contributor rankNew Contributor
    7 years ago
    Hi melvin thank you for your kindness. Unfortunately I couldn't find the answer I was looking for. I did found out that kernel argument address are ordered in exact order I wrote in cl kernel file. But I was not able to query kernel names with mmd apis. So it will be super helpful if you can assign someone to help me. 2018년 10월 9일 (화) 오후 2:27, Intel Forums <supportreplies@intel.com>님이 작성:
  • MuhammadAr_U_Intel's avatar
    MuhammadAr_U_Intel
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    7 years ago

    Hi,

    Can you elaborate your use case where you need to use the Kernel name and address ?

    Preferably specify the API you are trying to use.

    Thanks,

    Arslan

  • KLee24's avatar
    KLee24
    Icon for New Contributor rankNew Contributor
    7 years ago
    Oh Sorry for my late reply. The reason why i want to query kernel names is this. I do use FPGA kernel code written in OpenCL but due to some hardware structure change, I can't use ordinary OpenCL host API's in my host code. So instead, i am currently working on using aocl_mmd_read,write,etc API's to send and receive data such as kernel arguments, input,output,etc(ref. https://www.intel.com/content/altera-www/global/en_us/index/documentation/ewa1402666946838.html) . But the problem is that in order to do this procedure, I have to know the exact order of kernels written in OpenCL device code. This is highly inconvenient because my ultimate goal is to mimic OpenCL host API's and make it work on my custom hardware design so I thought it would be very helpful if I can query kernel addresses via its' name and wondered how OpenCL host API does that. Umm... I think this is pretty much it. If there's more that you need to know please let me know. Thank you for your kindness! Best , Kyungchae 2018년 10월 10일 (수) 오후 7:30, Intel Forums <supportreplies@intel.com>님이 작성:
  • MuhammadAr_U_Intel's avatar
    MuhammadAr_U_Intel
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    7 years ago

    Hi,

    Actually I am wondering, what are the hardware changes that is causing the use of ordinary OpenCL host API's ?

    I am afraid what you are asking isn't supported. Kernel address mappings are software defined and vary for different kernels, with different pragmas/attributes, and different neighboring kernels. Hence there’s no formula for this.

    Thanks,

    Arslan