From: Steven Dake <sdake-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: ib-x2spCj9RiN0z5UmgcLIfJQ@public.gmane.org
Cc: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: Is multicast only available with UD Transport mode?
Date: Tue, 16 Nov 2010 11:03:06 -0700 [thread overview]
Message-ID: <4CE2C75A.3000006@redhat.com> (raw)
In-Reply-To: <20101116100940.uxjift8pwwg40osc-x2spCj9RiN0z5UmgcLIfJQ@public.gmane.org>
On 11/16/2010 10:09 AM, ib-x2spCj9RiN0z5UmgcLIfJQ@public.gmane.org wrote:
> According to a document I have, "RDMA Aware Networks Programming User
> Manual" from Mellanox, the max message size for UD is the MTU. Is the
> MTU tweakable? What are the limits of tweakability?
>
> E
>
Some systems have a network MTU of 2048 other cards/switches are 4096.
Don't forget you will need the header in the message which consumes some
of the MTU room available.
Regards
-steve
>
> Quoting "Hefty, Sean" <sean.hefty-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>:
>
>>> Is multicast only available with UD Transport mode?
>>
>> yes
>>
>
>
>
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next prev parent reply other threads:[~2010-11-16 18:03 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-12 17:12 Is multicast only available with UD Transport mode? ib-x2spCj9RiN0z5UmgcLIfJQ
[not found] ` <20101112101223.44mbsbnygwcw0008-6c4oY0qWgKW61VtY7fu8aA@public.gmane.org>
2010-11-12 17:13 ` Hefty, Sean
[not found] ` <CF9C39F99A89134C9CF9C4CCB68B8DDF25B852237B-osO9UTpF0USkrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org>
2010-11-16 17:09 ` ib-x2spCj9RiN0z5UmgcLIfJQ
[not found] ` <20101116100940.uxjift8pwwg40osc-x2spCj9RiN0z5UmgcLIfJQ@public.gmane.org>
2010-11-16 18:03 ` Steven Dake [this message]
2010-11-13 8:35 ` Bart Van Assche
[not found] ` <AANLkTi=Pdk5nZXq+Yed=fbxXLwkSJGere=26-3YNmd_Y-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2010-11-14 22:06 ` Steven Dake
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