Error: Assert failure at ACLMemUtils.cpp(510) - Error: Assert failure at ACLMemUtils.cpp(510) Description When using the Intel® SDK for OpenCL™, “Error: Assert failure at ACLMemUtils.cpp(510)” may be seen during a kernel compilation as shown below: > aoc kernel.cl -rtl aoc: Running OpenCL parser.... aoc: OpenCL parser completed successfully. aoc: Linking Object files.... aoc: Optimizing and doing static analysis of code... ******* Error: Assert failure at ACLMemUtils.cpp(510) ******* The error occurs when the on-chip memory size is (2**n) 1, for n >= 5. Here is some example kernel code for illustration: #define n 5 #define size (2**n) 1 __kernel void kernel(__global char * restrict input) { int mem[size]; for (int i=0; i<size-1; i ) mem[i]=mem[i 1]; mem[size-1] = input i; } Resolution To work around this problem, Use a size that is not (2**n) 1 or Use #pragma unroll on the loop This problem is fixed, beginning with Intel® Quartus® Prime Software version 18.1 Custom Fields values: ['novalue'] Troubleshooting FB: 575498; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 18.1 18.0 ['Programmable Logic Devices'] ['HLD Tools OpenCL'] ['novalue'] ['novalue']