> Why should clients have to emulate asynchronous behavior when the
> (Mellanox) HCA command interface is already asynchronous?
That's one HCA command model... others may not be (eg I believe ehca
makes synchronous hypercalls to do things like modify QP, and ipath is
pure software with no other
>> I could try adding threads to the librdmacm, move the modify calls to
>> those threads, and see if there's any difference.
>
>You'll still need to have the kernel thread pool to support WinVerbs (at least
>on Windows.)
I was only referring to Linux, and only for testing to see how much differen
Hi Sean
Sean Hefty wrote on Thu, 19 Nov 2009 at 11:53:56
>> can't anyone get async modify QP today on any platform by just doing
>> the operation in another thread (or thread pool)? It seems that the
>> operations themselves are heavy enough that thread dispatch, locking
>> etc is going to be si
Hi Roland
Roland Dreier wrote on Thu, 19 Nov 2009 at 11:19:02
>
>> WinOF has asynchronous interfaces for modify QP, and limited testing
>> has shown that it can improve connection times. QP transitions are
>> probably the second largest component of connection setup after the SA.
>> Since the
