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422 Discussions

Running HARP example design returns error value -54.

whan01
Beginner
519 Views

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?

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1 Solution
HRZ
Valued Contributor II
214 Views

Is there any reqd_work_group_size or max_work_group_size used in the kernel?

View solution in original post

6 Replies
KhaiChein_Y_Intel
214 Views

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.

whan01
Beginner
214 Views

The software is quartus 16.0.2 pro with all update patches installed. My OpenCL is v2.0.

HRZ
Valued Contributor II
215 Views

Is there any reqd_work_group_size or max_work_group_size used in the kernel?

whan01
Beginner
214 Views

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!

HRZ
Valued Contributor II
214 Views

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().

whan01
Beginner
214 Views

Thanks for the further reminder. I'm new to HARP2 and OpenCL and maybe I need to go back to the programming manual.

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