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Type: Posts; User: akhal

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    Re: clBuildProgram failed

    And when I tried to print the error code returned by "clBuildProgram"; it is "-11"......
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    clBuildProgram failed

    Hello

    I have worked little bit in OpenCL now but recently "clBuildProgram" failed in one of my program. My code excerpt is below:


    cl_program program;
    program =...
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    Re: Kernel call from within another kernel

    Thanks for all valuable comments. But would I have to call thread awakening function i.e.,
    int x = get_global_id(0);
    again inside every kernel in kernel calling hierarchy ?
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    Kernel call from within another kernel

    Hello

    I have code that calls functions from within functions. So I want to know if I want to keep the same structure, is it possible that from within OpenCL kernel (as a function), I try to call...
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    CPU OpenCL local+private+constant memories

    Hello

    I posted this question on AMD forum but I only got answer that GPU implement local memory as on chip LDS and on chip private memory bank. I want to know how constant, local and private...
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    Default Optimization in OpenCL

    Hello

    I have OpenCL implemenations, I want to turn off default optimizations which are enabled by default, I used the flag "-cl-opt-disable" in clBuildProgram command but it gives me "undefined...
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    Porting fortran spread() function to OpenCL

    Hello

    I posted this question on both AMD and Nvidia forums few days back but no answer yet so I am putting it here now. I need functionality of fortran spread function in OpenCL kernel. For...
  8. Re: clEnqueueNDRangeKernel() returns with error code "-54"

    ok thank you :)
  9. clEnqueueNDRangeKernel() returns with error code "-54"

    Hello
    I got clEnqueueNDRangeKernel() returns with error code "-54" after I try to run program but I dont know what this error code means. I have seen it on forums that all error codes are written in...
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    Re: Sync across work groups

    Aha ok thank you so much...
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    1,315

    Sync across work groups

    Hello

    I have written OpenCL kernel in which there are no work groups, only single work items in a 2D range. There are two read/write operations in kernel and I need a function like...
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    Re: AMD OpenCL with Nivida GPU

    ok thanks... lemme try :)
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    Re: Inner loops with OpenCL

    anyone there....
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    Inner loops with OpenCL

    Hello

    I am new to OpenCL and want to parallelize some looping code thats doing lu factorization with the looping structure showed by exact code as below:

    for(int k = 0; k < N-1; k++)
    {...
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    Re: CPU vs GPU optimizations

    Thank you so much for kind information...
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    Re: CPU vs GPU optimizations

    I am using AMD OpenCL implementation...
    Also is SIMD utilization or auto-vectorization possible if I havent used OpencL vectors for example? Also local/private memory can boost speedup on CPUs? I...
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    Re: CPU vs GPU optimizations

    SIMD instructions such as SSE + multithreading.


    Maybe it's how you measure things? Using local memory on CPU should give you no performance increases as it is the same as global (host) memory.
    ...
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    CPU vs GPU optimizations

    Hello

    I have implemented a straightaway naive matrix multiplication in OpenCL with AMD SDK. I get Speedup of around 16 for just an 8-core CPU system while I only run it on CPUs. I have applied...
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    Re: AMD OpenCL with Nivida GPU

    I have only AMD SDK and with it I can select Nvidia platform (since I have installed Nvidia driver) and then I select my gpu, make a context for it, command queue too and then I made program object....
  20. Thread: LU factorization

    by akhal
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    1,633

    LU factorization

    Hello

    I have installed AMD SDK for OpenCL. I want to parallelize LU factorization code with OpenCL for CPUs. Is there such OpenCL code/pseudo code available, and will it different code optimized...
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    AMD OpenCL with Nivida GPU

    Hello

    I have installed AMD SDK for OpenCL. My system has "NVIDIA GeForce 9200M GS" GPU and I have the latest driver installed for this GPU. I want to know should this GPU work with AMD...
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    Re: Error codes: clSetKernelArg

    Okay thank you. I solved the problem anyway.
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    Error codes: clSetKernelArg

    Hello
    I got error code 1 returned by clSetKernelArg() function; I see error names but I dont know how they all map to these error codes?
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