Re: [Chromium-dev] Status of Infiniband network layer?

[Mike H. <mho...@gr...>]

SDP is in good shape, and I'd suggest using that.  The VAPI layer hasn't 
been converted to the new OpenIB stack, as far as I know, and you don't 
want to use the old drivers that support that API.  SDP support in the 
OpenIB gen 2 stack, i.e. the one in the linux kernel, is pretty good 
(zero-copy, aio support, etc).

Unless you plan to use multi-port/channel or mult-board, SDP will 
probably be your best bet.  If you need to use those advanced features, 
you'll currently need to use raw VAPI, and the layer in Chromium isn't 
up to that.  For all out performance, using VAPI directly will be the 
best thing, but it's going to take a large time commitment to bring that 
layer up to snuff.

-Mike

we...@st... wrote:
> Hi folks;
>   How functional is the current version of the Infiniband network layer? 
> I recall some discussion about instabilities due to variations in vendor
> implementations about a year ago, but I don't recall hearing anything
> since.  We have enough Infiniband machines in house at this point that
> it's become very relevant to us.
>
> Thanks,
> -Joel
>  we...@ps...
>
>
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