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okramer's avatar
okramer
Icon for Occasional Contributor rankOccasional Contributor
6 years ago
Solved

Expected "channels" specification in the BSP's board_spec.xml but see nothing.

I'm learning about Intel's "channels" OpenCL extension for host-to-kernel and io-to-kernel communication. The training video says the specification of the board's available channels are in board_spec...
  • MEIYAN_L_Intel's avatar
    MEIYAN_L_Intel
    6 years ago

    Hi,

    Yes host-to-dev channel and dev-to-host are supported only by "a10gx_hostpipe"BSP.

    For question "Does Intel perhaps provide a BSP with ethernet available, since the dev kit comes with ethernet?", i would need some time to check it internally.

    The BSP support host-dec streaming via pipe. The channel is provided for pipe to work. There is no difference between pipe and channel, it only the name difference here.

    Thanks

okramer's avatar
okramer
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

Thanks Mylee.

If I understand correctly, host-to-dev and dev-to-host channels are currently supported only by the "a10gx_hostpipe" BSP. When I invoke aoc, I need to use "-board=a10gx_hostpipe", correct? The "a10_ref" BSP does not support host<->dev channels?

What about ethernet? From the user guide you linked to above, it sounds like I'll need to define a new BSP based on "a10gx_hostpipe" that adds the ethernet capability as well. Does Intel perhaps provide a BSP with ethernet available, since the dev kit comes with ethernet?

What about OpenCL pipes? I suppose the BSP somehow needs to support host<->dev streaming via pipes. Does Intel use channels under the hood for the OpenCL pipes implementation? So in order for pipes to work, the BSP must provide corresponding channels? I willl most likely use pipes, not channels, so this question is the most important.