Segmentation Fault in clCreateProgramwithSource

#1

Hi,
I am pretty new to OpenCL.

I am trying to parallelize the following snippet:

for ( ; i < ncols - radius ; i++)  {
      ppp = ptrrow + i - radius;
      sum = 0.0;
      //for (k = kernel.width-1 ; k >= 0 ; k--)
        //sum += *ppp++ * kernel.data[k];
           sum = ppp[0] * kernel.data[kernel.width-1] + ppp[1] * kernel.data[kernel.width-2]
                    + ppp[2] * kernel.data[kernel.width-3] + ppp[3] * kernel.data[kernel.width-4]
                    + ppp[4] * kernel.data[kernel.width-5] + ppp[5] * kernel.data[kernel.width-6]
                    + ppp[6] * kernel.data[kernel.width-7];
      *ptrout++ = sum;
    }

I have written the following kernel for the same:

__kernel void convolveImageHoriz(__global float *ppp, __global float *ptrrow, __global float *ptrout, __global float *Kernel, int nrows, int width, int ncols)
{
    int i = get_global_id(0);
    int radius = width/2;
    float sum;

    if (i >= radius && i < nrows-radius)
    {
        ppp = ptrrow + i - radius;
        sum = 0.0;

        sum = ppp[0] * Kernel[width-1] + ppp[1] * Kernel[width-2]
            + ppp[2] * Kernel[kernel.width-3] + ppp[3] * Kernel[width-4]
            + ppp[4] * Kernel[width-5] + ppp[5] * Kernel[width-6]
            + ppp[6] * Kernel[width-7];

        ptrout[i] = sum;
    }
}

I know for a fact that there is some issue in the Kernel as the code runs fine when I run some other Kernel.
Could someone help?

#2

Hi mohitu,
What GPU do you use?
What OS do you use?
Can you attach the minimal simple project where the issue can be reproduced ?