[ofa-general] maximum IB/iWARP max_inline_data size
jsquyres at cisco.com
Mon Jun 23 13:30:46 PDT 2008
On Jun 21, 2008, at 9:26 AM, Dotan Barak wrote:
>> Our bias in OMPI is to figure such values dynamically at run-time.
>> With T3/NE020, it seems to be easy. Note that if you choose a
>> max_inline_data value too large, ibv_create_qp will simply fail.
>> So how can we figure out what the max_inline_data value is for
>> Mellanox adapters at run-time? (I'd prefer not to repeatedly
>> trying to create a QP with increasing values of max_inline_data
>> until it fails).
> Is it possible to add such a capability to the HCA capabilities
> structure (the high limit which is supported by the device)?
That would be nice, but it doesn't solve my immediate problem. :-)
Paul Hargrove told me (off list) that he ended up looping over
max_inline_data values testing to see if ibv_create_qp() fails with
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