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Altera_Forum
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8 years ago

Can NDRange kernel forward data to other kernels via channels/pipes?

Hi everyone, I'm writing an OpenCL image segmentation code. The algorithm I chose is mostly parallel, meaning that distances between pixels and cluster centers are calculated in parallel. Howev...
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Altera_Forum
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8 years ago

Thank you for your comment. I already read all Altera manuals, however I still do not understand how to maintain ordering of the channels (writing from NDRange to other kernels) since NDRange kernel executes work-items out-of-order. I'm also concerned about the length of the channel. If I have an image of size 300x400, do I need to create 300x400 channel, or I should design shorter channel and execute loop several times?

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You can find the answers to your questions in "Intel FPGA SDK for OpenCL Programming Guide, Section 5.4".

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