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alariq
Adept I

Compiler crash on a simple kernel

Hello, All

I have a simple kernel which makes open cl api to crash on

clBuildProgram(); 

i call it lioke this:

clBuildProgram(program, 1, device, 0, NULL, NULL); // <- crash occures inside this call. somewhere inside aticaldd.dll

This crash happens only if i build my program in Release mode.

However KernelAnalyzer2 also can't build this kernel. It just can't finish to build it.

I suppose that crash occures somewhere at the code generation stage, because if i make mistake in the kernel - there is no crash.

I have Catalyst 12.8

Here is the kernel itself:

#pragma OPENCL EXTENSION cl_khr_byte_addressable_store : enable

#define pixel    uchar

struct _OCL_BUF_INFO {

    int i_mb_width;

    int i_mb_height;

    int i_stride;

    float qp;

} ;

typedef struct _OCL_BUF_INFO OCL_BUF_INFO;

__kernel

//__attribute((reqd_work_group_size(64,1,1)))

void testKernel(

    __global const pixel*     fenc_plane,

    OCL_BUF_INFO         h,

    __global uchar*     dbgout)

{

    const size_t li = get_local_id(0);

    const int xy = li % 16;

    //uchar fenc[16] = {0};

    uchar16 fenc;

    fenc = vload16(0, fenc_plane );

    for(int i=0;i<16;++i)

        dbgout[i + 16*xy] = ((uchar*)&fenc);  // this line causes issue, if i'll change fenc type to: uchar fenc[16] everything is ok.

    return;

}

does
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3 Replies
binying
Challenger

Re: Compiler crash on a simple kernel

"However KernelAnalyzer2 also can't build this kernel. It just can't finish to build it."

Do you mean

"However KernelAnalyzer also can't build this kernel. It just can't finish building it."?

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alariq
Adept I

Re: Compiler crash on a simple kernel

exactly 🙂

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alariq
Adept I

Re: Compiler crash on a simple kernel

So, any comments?

Thanks.

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