Can you kindly explain the following Blur kernel configuration in WORDS and/or formulars in detail as much as possible  ?

Transcribed Image Text:

//* #if 1 *BLUR* read("Cat_Edge1.ppm", width, height, r,g,b); LOG("processing " < < width "x" < < height); // copy read image to GPU gpuErrchk(cudaMalloc(&d_r, width*height*sizeof(float))); gpuErrchk(cuda Malloc(&d_g, width*height*sizeof(float ))); gpuErrchk(cudaMalloc(&d_b, width*height*sizeof(float))); gpuErrchk(cudaMalloc(&d_r_o, width*height*sizeof(float))); gpu Errchk(cudaMalloc(&d_g_o, width*height*sizeof(float ))); gpuErrchk(cudaMalloc(&d_b_o, width*height*sizeof(float))); #else gpuErrchk(cudaMemcpy(d_r, &r[0], width*height*sizeof(float), gpuErrchk(cudaMemcpy(d_g, &g[0], width*height*sizeof(float), gpuErrchk(cudaMemcpy(d_b, &b[0], width*height*sizeof(float), width=640; height=480; gpuErrchk(cudaMalloc(&d_r, width*height*sizeof(float))); gpuErrchk(cudaMalloc(&d_g, width*height*sizeof(float))); gpuErrchk(cudaMalloc(&d_b, width*height*sizeof(float))); cudaMemcpyHost ToDevice)); cudaMemcpyHost ToDevice)); cudaMemcpyHost ToDevice)); //* #if 1 *BLUR* read("Cat_Edge1.ppm", width, height, r,g,b); LOG("processing " < < width "x" < < height); // copy read image to GPU gpuErrchk(cudaMalloc(&d_r, width*height*sizeof(float))); gpuErrchk(cuda Malloc(&d_g, width*height*sizeof(float ))); gpuErrchk(cudaMalloc(&d_b, width*height*sizeof(float))); gpuErrchk(cudaMalloc(&d_r_o, width*height*sizeof(float))); gpu Errchk(cudaMalloc(&d_g_o, width*height*sizeof(float ))); gpuErrchk(cudaMalloc(&d_b_o, width*height*sizeof(float))); #else gpuErrchk(cudaMemcpy(d_r, &r[0], width*height*sizeof(float), gpuErrchk(cudaMemcpy(d_g, &g[0], width*height*sizeof(float), gpuErrchk(cudaMemcpy(d_b, &b[0], width*height*sizeof(float), width=640; height=480; gpuErrchk(cudaMalloc(&d_r, width*height*sizeof(float))); gpuErrchk(cudaMalloc(&d_g, width*height*sizeof(float))); gpuErrchk(cudaMalloc(&d_b, width*height*sizeof(float))); cudaMemcpyHost ToDevice)); cudaMemcpyHost ToDevice)); cudaMemcpyHost ToDevice));