Hal,
I have some more partition questions. Do I have to configure the nodes
as members of partition(s) both in opensm and on the individual node (if
the node is a member of two partitions)? And what about the switches -
do the switches need be configured as part of any partition?
Tom
On 7/13/2010 11:44 AM, Hal Rosenstock wrote:
Tom,
On Tue, Jul 13, 2010 at 12:50 PM, Tom Ammon<[email protected]> wrote:
Hal,
The procedure is a little different. You'll need to create a child
interface (on a partition) first and then you will be able to
configure it as follows:
echo 0x8001> /sys/class/net/ib0/create_child
ifconfig ib0.8001 ...
Note that you'll want the 0x8000 bit on for full membership.
What does "full membership" mean?
For a partition, full members can talk with both full and limited
members whereas limited members can only talk with full members.
And are you saying that for full
membership, any value beginning with 0x8 would work?
The 0x8000 bit is the (full) membership bit so 0x8abc is the pkey for
full membership in the 0xabc partition. 15 bits of pkey can be used
for partition although my example above only used 12 bits.
Can an HCA have full membership on multiple partitions simultaneously?
Yes.
-- Hal
Thanks,
Tom
-- Hal
Tom
On 7/12/2010 1:06 PM, Hal Rosenstock wrote:
On Mon, Jul 12, 2010 at 3:03 PM, Hal Rosenstock
<[email protected]> wrote:
Hi Tom,
On 7/12/10, Tom Ammon<[email protected]> wrote:
Hi,
I have some basic questions about IB partitions.
Can an HCA port belong to more than 1 partition at a time?
Yes.
How do you configure partitions with opensm? From reading the opensmd
man page, it looks like you just create a file called
/etc/osm-partitions.conf, with port GUIDs and such, but is this
current?
The default location depends on how OpenSM is configured/built.
I missed this the first time around:
and yes, the syntax indicated is current.
-- Hal
I ask because according to the man page the opensm configuration file
is
in /etc/opensm/ . Can you tell opensm where to look for the partitions
file?
Yes, with either the -P option on the command line or
partition_config_file line in the options file.
-- Hal
Thanks,
Tom
--
Tom Ammon
Network Engineer
Office: 801.587.0976
Mobile: 801.674.9273
Center for High Performance Computing
University of Utah
http://www.chpc.utah.edu
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--
Tom Ammon
Network Engineer
Office: 801.587.0976
Mobile: 801.674.9273
Center for High Performance Computing
University of Utah
http://www.chpc.utah.edu
--
Tom Ammon
Network Engineer
Office: 801.587.0976
Mobile: 801.674.9273
Center for High Performance Computing
University of Utah
http://www.chpc.utah.edu
--
Tom Ammon
Network Engineer
Office: 801.587.0976
Mobile: 801.674.9273
Center for High Performance Computing
University of Utah
http://www.chpc.utah.edu
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