Error message : "Error: Optimizer FAILED -dbg-info-enabled --grif --soft-elementary-math=false --fas=false --wiicm-disable=true "kernel_top.1.bc" -o "kernel_top.kwgid.bc" - Error message : "Error: Optimizer FAILED -dbg-info-enabled --grif --soft-elementary-math=false --fas=false --wiicm-disable=true "kernel_top.1.bc" -o "kernel_top.kwgid.bc" Description Due to a problem with the FPGA SDK for OpenCL™ software technology, you may see this error after a long compilation time. This is caused by a large number of storage operations to undefined elements performed by the h_updating_graph_mask_buf_0 and h_graph_visited_buf_0 arrays functions. Resolution To fix this problem add the following lines in the kernel_top.cl file: *************** *** 22,30 **** #pragma ACCEL interface variable=k depth=1 bool stop; do { - bool h_updating_graph_mask_buf_0[1000000]; - bool h_graph_visited_buf_0[1000000]; //if no thread changes this value then the loop stops stop = false; //omp_set_num_threads(num_omp_threads); --- 22,30 ---- #pragma ACCEL interface variable=k depth=1 bool stop; bool h_updating_graph_mask_buf_0[1000000]; bool h_graph_visited_buf_0[1000000]; do { //if no thread changes this value then the loop stops stop = false; //omp_set_num_threads(num_omp_threads); This problem will be fixed in a future release of the Intel FPGA SDK for OpenCL Custom Fields values: ['novalue'] Troubleshooting FB: 516662; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] novalue 17.1.2 ['Programmable Logic Devices'] ['HLD Tools OpenCL'] ['novalue'] ['novalue']