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<TITLE>Re: [ofa-general] oversubscription</TITLE>
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<DIV dir=ltr><FONT face=Arial color=#000000 size=2>Your question made it clear
:) We are still using only one SFS-7000P switch. Routing is here not an option.
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<DIV dir=ltr><FONT face=Arial size=2>This was our setup:</FONT></DIV>
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<DIV dir=ltr><FONT face=Arial
size=2> s1</FONT></DIV>
<DIV dir=ltr><FONT face=Arial
size=2> | |
| | </FONT></DIV>
<DIV dir=ltr><FONT face=Arial
size=2> SFS-7000P</FONT></DIV>
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size=2>
| | | |
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<DIV
dir=ltr> h1 h2
h3 h4</DIV>
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<DIV dir=ltr>So change the routing will give no benefit what so
ever...</DIV>
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<DIV dir=ltr>Greetz</DIV>
<DIV dir=ltr> </DIV>
<DIV dir=ltr>Koen</DIV>
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<DIV dir=ltr><FONT face=Tahoma size=2><B>From:</B> Yevgeny Kliteynik
[mailto:kliteyn@dev.mellanox.co.il]<BR><B>Sent:</B> Wed 3/14/2007 8:24
AM<BR><B>To:</B> Hal Rosenstock<BR><B>Cc:</B> SEGERS Koen;
general@lists.openfabrics.org<BR><B>Subject:</B> Re: [ofa-general]
oversubscription<BR></FONT><BR></DIV>
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<P><FONT size=2>Hal Rosenstock wrote:<BR>> On Tue, 2007-03-13 at 17:30,
SEGERS Koen wrote:<BR>>> I'm trying to resolve an oversubscription problem
of 1 server<BR>>> receiving streams from 4
hosts.<BR>>> <BR>>> If you connect the server with 4 cables to
the switch, it should be<BR>>> resolved when I define the routes that
should be used. But is it<BR>>> possible to define the routing tables in
the subnet manager?<BR>><BR>> Depends on the SM as to whether this is
supported or not. OpenSM<BR>> supports the ability to do this as do some
vendor SMs.<BR>><BR>>> Maybe just running the fattree routing module is
sufficient?<BR>><BR>> I'm not sure; Yevgeny would be the best to answer
this.<BR><BR>What is the fabric topology?<BR><BR>Basically, you can try using
fat-tree routing, and if the topology<BR>is not a fat-tree, OpenSM will issue an
error message and will use<BR>default routing.<BR>You can get more details from
the osm/doc/current-routing.txt<BR><BR>-- Yevgeny<BR><BR>>> I also
saw that it is possible to set the routes by using a file. Can<BR>>>
someone give an example of this?<BR>><BR>> This capability is documented
in the opensm man page. You can obtain<BR>> this file via dump_lfts.sh
script.<BR>><BR>>> Currently I'm trying a combination of partitioning
and linux routing.<BR>>> Is this a good idea?<BR>><BR>> What do you
mean by Linux routing ? Is this IP routing ?<BR>><BR>> --
Hal<BR>><BR>>> BTW: we are only interested in SDP and IPoIB. In a
previous thread I<BR>>> discovered that bonding/aggregation/merging is not
possible in an<BR>>> active/active situation. So this doesn't improve our
setup.<BR>>> <BR>>> greetz,<BR>>> <BR>>>
Koen<BR>>> *** Disclaimer ***<BR>>><BR>>> Vlaamse Radio- en
Televisieomroep<BR>>> Auguste Reyerslaan 52, 1043
Brussel<BR>>><BR>>> nv van publiek recht<BR>>> BTW BE
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