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Altera_Forum
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10 years ago

Questions about resource usage

Hi, I have a pretty simple kernel that stores the image pixels to output as follows: int index = get_global_id(0); for (int i=index; i<WIDTH*HEIGHT;i++) { output = input; } The FPG...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

You are misunderstanding the hardware generated for FPGA. Essentially, your kernel becomes a "pipeline" where each work-item moves from one stage to the next stage every cycle, i.e. your kernel is fixed hardware and work-items run on it. Hence, the generated hardware is not affected by how many work-items there are. "Best Practices Guide" has a high-level description of the pipeline architecture generated.