On Sun, 2011-05-29 at 10:08 +0100, Muli Ben-Yehuda wrote:
> On Thu, May 26, 2011 at 03:10:40PM +0100, Ian Campbell wrote:
> > On Thu, 2011-05-26 at 15:04 +0100, maus wrote:
> > > Hi,
> > >
> > > I know use IP-over-IB can let KVM or Xen use IB, but what I have to do
> > > is like Xen-IB. Not just use IB.
> >
> > What is Xen-IB exactly?
>
> OS and hypervisor bypass, i.e., direct access from a user application
> running in a domU to the Infiniband adapter (HCA), bypassing both the
> domU kernel and Xen for frequent data-path operations. Configuration
> and privileged operations still go through the kernel and the
> hypervisor.
>
> > > So, there is no toturial for Xen-IB,right?
> >
> > That's right, there is no documentation and anyone who would have
> > been involved with this stuff is long gone.
>
> Actually, there is a very nice paper describing the approach:
>
> "High Performance VMM-Bypass I/O in Virtual Machines", Jiuxing
> Liu, Wei Huang, Bulent Abali, Dhabaleswar K. Panda, USENIX ATC '06
Thanks for the reference.
Are any of these folks still active? It seems like they could be far
more helpful to the OP than anyone here (certainly more useful than
me ;-))...
Ian.
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