diff options
Diffstat (limited to 'src/core/CL/cl_kernels/arg_min_max.cl')
| -rw-r--r-- | src/core/CL/cl_kernels/arg_min_max.cl | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/core/CL/cl_kernels/arg_min_max.cl b/src/core/CL/cl_kernels/arg_min_max.cl index 06dcc8ddde..104d30d8f3 100644 --- a/src/core/CL/cl_kernels/arg_min_max.cl +++ b/src/core/CL/cl_kernels/arg_min_max.cl @@ -254,10 +254,15 @@ __kernel void arg_min_max_x( barrier(CLK_LOCAL_MEM_FENCE); + // Looking for the next highest power of 2 (maximum value of lsize is 8) + unsigned int middle = lsize - 1; + middle |= middle >> 1; + middle |= middle >> 2; + middle += 1; // Perform parallel reduction - for(unsigned int i = lsize >> 1; i > 0; i >>= 1) + for(unsigned int i = middle; i > 0; i >>= 1) { - if(lid < i) + if( lid < i && lid + i < lsize) { DATA_TYPE tmp0 = *(src_in_row + local_results[lid]); DATA_TYPE tmp1 = *(src_in_row + local_results[lid + i]); |