Article ID: 000077386 Content Type: Error Messages Last Reviewed: 08/15/2023

Error: Assert failure at ACLMemUtils.cpp(510)

Environment

    Intel® Quartus® Prime Pro Edition
    Intel® FPGA SDK for OpenCL™ Pro Edition
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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

Related Products

This article applies to 1 products

Intel® Programmable Devices

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