* [RFC] [PATCH 0/4] librdmacm: Rsockets API and implementation
@ 2012-04-11 18:29 Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373451ACEEF-P5GAC/sN6hmkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Hefty, Sean @ 2012-04-11 18:29 UTC (permalink / raw)
To: linux-rdma (linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org)
Cc: Hefty, Sean
The following patch set contains an initial implementation of rsockets as
presented at the 2012 OpenFabrics Workshop. A copy of that presentation
is available at:
https://www.openfabrics.org/downloads/rdmacm/rsockets-ofa12.pptx
and a video of the presentation can be found here:
http://www.youtube.com/watch?v=2IRrXdIsJuU
For those of you who don't like clicking on links in an email, rsockets
is a socket-like API layered over verbs. It is conceptually similar to a
user space implementation of SDP, except that it uses custom algorithms and
protocols.
The source code has been pushed into an rsocket branch in my git tree at:
git://git.openfabrics.org/~shefty/librdmacm.git rsocket
All comments are welcome, but mostly verbal praise. Although comments
on the wire protocol before an official release would be the most useful.
Signed-off-by: Sean Hefty <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [RFC] [PATCH 0/4] librdmacm: Rsockets API and implementation
[not found] ` <1828884A29C6694DAF28B7E6B8A82373451ACEEF-P5GAC/sN6hmkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
@ 2012-04-11 20:18 ` Bart Van Assche
[not found] ` <4F85E720.5040307-HInyCGIudOg@public.gmane.org>
0 siblings, 1 reply; 3+ messages in thread
From: Bart Van Assche @ 2012-04-11 20:18 UTC (permalink / raw)
To: Hefty, Sean
Cc: linux-rdma (linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org)
On 04/11/12 18:29, Hefty, Sean wrote:
> The following patch set contains an initial implementation of rsockets as
> presented at the 2012 OpenFabrics Workshop. A copy of that presentation
> is available at:
>
> https://www.openfabrics.org/downloads/rdmacm/rsockets-ofa12.pptx
>
> and a video of the presentation can be found here:
>
> http://www.youtube.com/watch?v=2IRrXdIsJuU
>
> For those of you who don't like clicking on links in an email, rsockets
> is a socket-like API layered over verbs. It is conceptually similar to a
> user space implementation of SDP, except that it uses custom algorithms and
> protocols.
>
> The source code has been pushed into an rsocket branch in my git tree at:
>
> git://git.openfabrics.org/~shefty/librdmacm.git rsocket
>
> All comments are welcome, but mostly verbal praise. Although comments
> on the wire protocol before an official release would be the most useful.
Interesting work. Regarding direct data placement: have the io_submit()
and io_getevents() system calls been considered ? Those are the
foundation of libaio.
Bart.
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^ permalink raw reply [flat|nested] 3+ messages in thread
* RE: [RFC] [PATCH 0/4] librdmacm: Rsockets API and implementation
[not found] ` <4F85E720.5040307-HInyCGIudOg@public.gmane.org>
@ 2012-04-11 21:44 ` Hefty, Sean
0 siblings, 0 replies; 3+ messages in thread
From: Hefty, Sean @ 2012-04-11 21:44 UTC (permalink / raw)
To: Bart Van Assche
Cc: linux-rdma (linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org)
> Interesting work. Regarding direct data placement: have the io_submit()
> and io_getevents() system calls been considered ? Those are the
> foundation of libaio.
I did look at aio and other interfaces, but I didn't try to move beyond the idea phase. With aio, I didn't see how the calls could easily be used by a socket app without recoding, or even redesigning the app around the aio interface.
Are you suggesting calls similar to io_submit() and io_getevents() that work with a socket rather than an aio_context_t?
My intent is to start a more general discussion on whether direct data placement is needed (I'm assuming yes) and the best way to add it. I wasn't comfortable enough with just my own musing on things to dedicate any time implementing something.
- Sean
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^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-04-11 18:29 [RFC] [PATCH 0/4] librdmacm: Rsockets API and implementation Hefty, Sean
[not found] ` <1828884A29C6694DAF28B7E6B8A82373451ACEEF-P5GAC/sN6hmkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2012-04-11 20:18 ` Bart Van Assche
[not found] ` <4F85E720.5040307-HInyCGIudOg@public.gmane.org>
2012-04-11 21:44 ` Hefty, Sean
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