Running HARP example design returns error value -54. - Running HARP example design returns error value -54. I modify the host code of example design. The original part in launching the first kernel is status = clEnqueueNDRangeKernel(queue, kernel, 1, NULL, gsize, lsize, 0, NULL, NULL) I modify this part to // define NDRange Size size_t gsize[1]={(size_t) 10}; size_t lsize[1] = {(size_t) 2}; status = clEnqueueNDRangeKernel(queue, kernel, 1, NULL, gsize, lsize, 0, NULL, NULL) Then I run the code it returns error code -54. Why can't I increase the 1-d lsize to 2? Replies: Re: Running HARP example design returns error value -54. Thanks for the further reminder. I'm new to HARP2 and OpenCL and maybe I need to go back to the programming manual. Replies: Re: Running HARP example design returns error value -54. So the kernel is not even NDRange. 😅 Be careful that just removing that attribute will not convert the kernel to NDRange; you will need to rewrite the kernel and replace the loops in it with get_global_id()/get_local_id(). Replies: Re: Running HARP example design returns error value -54. You remind me. There's neither reqd_work_group_size nor max_work_group_size, but at the head of each kernel function there's a declaration __attribute__((task)) which implicitly indicates the max work group dimension is 0. The max group work items is 1. So here's problem. Thanks! Replies: Re: Running HARP example design returns error value -54. The software is quartus 16.0.2 pro with all update patches installed. My OpenCL is v2.0. Replies: Re: Running HARP example design returns error value -54. Is there any reqd_work_group_size or max_work_group_size used in the kernel? Replies: Re: Running HARP example design returns error value -54. Hi, May I know the software version and edition you are using? Could you share the error message and provide the design for investigation? Thanks.