Re: [OMPI devel] Moving fragments in btl sm

[George Bosilca]

The real memory copy happen in the convertor, more specifically in the ompi_convertor_pack for the sender and in the ompi_convertor_unpack for the receiver. In fact, none of the BTL directly call memcpy, all memory movements are done via the convertor.

  george.

On Nov 8, 2007, at 7:38 AM, Torje Henriksen wrote:

Hi,

I have a question that I shouldn't need to ask, but I'm
kind of lost in the code.

The btl sm component is using the circular buffers to write and read
fragments (sending and receiving).


place? I'm thinking maybe a callback function existing somewhere :)


Thank you for your help now and earlier.


Best regards,

Torje Henriksen
(tor...@stud.cs.uit.no)

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In the write_to_head and read_from_tail I can only see pointers beeing set, no data being moved. So where does the actual data movement/copying take

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