Hi.
If one wishes to use maximum inline data, he should open a QP with
maximum number of s/g entries in the QP->SQ
(ibv_qp_init_attr.cap.max_send_sge). The actual number of bytes which
can be send as inline will be returned in the
attribute ibv_qp_init_attr.cap.max_inline_data after ibv_create_qp will
be finished.
The inline size effects the size of memory which is being used (and
pinned) for the QP buffers/queues
(per WR in the QP->SQ).
I'm sorry, but i don't really know what is exactly the size which is
being consumed for a QP
(I remember that in the past, Roland mentioned the exact calculation in
one of the emails that he sent
to this mailing list).
thanks
Dotan
Tang, Changqing wrote:
Does the inline size causes QP to use more pinned memory ? Is there any
document to tell
how a QP consumes physical memory, and what the relationship with inline data
size is?
Thanks.
--CQ
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
Arlin Davis
Sent: Monday, March 10, 2008 2:55 PM
To: OpenFabrics General; Roland Dreier; Sean Hefty
Subject: [ofa-general] max inline data query ?
Sorry, I know that we had this discussion before but could
someone refresh my memory. Are there plans to add a query for
max inline data size?
Right now I have no other mechanism but to call
ibv_create_qp, increasing inline size for a given sge count,
until it fails.
Thanks,
-arlin
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