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

Hi,

These line is used for the BSP to support host channels. You can try create a loopback kernel which can read from host_to_dev channel and write to host_to_dev channel.

For more information, you can refer to the links below:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/opencl-sdk/ug-aocl-a10pciedk-platform.pdf

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an831.pdf

Thanks

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.

Hi,

After check internally, there is no Arria 10 BSP with ethernet available provided by Intel.

To define the Arria 10GX with ethernet available, there is a document: "Stratix V network reference platform porting guide" that may be useful for you to define the ethernet available BSP.

https://www.intel.com/content/www/us/en/programmable/documentation/ewa1404851957878.html#ewa1405102911782

To modify the Arria 10GX BSP, you may need to refer the document as below:

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/an/an780.pdf

Thanks

I don't think aocl is seeing a10gx_hostpipe. When I do "aocl install", am I supposed to provide it the path to hostpipe BSP? My directory structure is:

~/intelFPGA_pro/19.3/hld/board/a10_ref
   board_env.xml  
   bringup/
   hardware/  
      a10gx/
         board_spec.xml, ...
      a10gx_hostpipe/
         board_spec.xml, ...
   linux64/
   scripts/
   source/

I ran aocl install $INTELFPGAOCLSDKROOT/board/a10_ref successfully, but when I do aocl diagnose acl0 I see:

...
--------------------------------------------------------------------
BSP Diagnostics                                                     
--------------------------------------------------------------------
Using Device with name: a10gx : Arria 10 Reference Platform (acla10_ref0)
...

The diagnostic passes, but the device name = "a10gx" worries me. In $INTELFPGAOCLSDK/board/a10_ref/hardware/a10gx_hostpipe/board_spec.xml, the device name is given as name="a10gx_hostpipe", while in a10gx/board_spec.xml, it is given as name="a10gx". Does this mean I'm accessing the wrong BSP? How do I install the a10gx_hostpipe BSP?

Hi,

According to https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/opencl-sdk/ug-aocl-a10pciedk-platform.pdf in Chapter 1.2.1, you have to choose the reference platform board variants by including board=<board name> as your aoc command option.

Thanks