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<div class="moz-cite-prefix">On 09/15/2015 10:30 AM, Jörg
Saßmannshausen wrote:<br>
</div>
<blockquote
cite="mid:201509151830.43400.j.sassmannshausen@ucl.ac.uk"
type="cite">
<pre wrap="">Hi Jeff,
no, not yet.
What I want to avoid is: I try the OFED subnet manager and it does not work
and then I have to wait until I get the licence. This project has enough
delays right now and I don't want to add to it. Hence my question.
Having said that: are you happy with the OFED one?</pre>
</blockquote>
<br>
Just to be clear, we are using the subnet manager from Mellanox
OFED, and yes we are happy with it. However, note that Mellanox made
several improvements over opensm (from OFED), and in fact it is one
of the few parts of Mellanox OFED that is NOT open (ibutils2 is
another), and is distributed as a binary only. Although we have been
told that the subnet manager improvements will eventually make it to
opensm, I don't know when that might happen.<br>
<br>
Cheers!<br>
<br>
-jeff<br>
<blockquote
cite="mid:201509151830.43400.j.sassmannshausen@ucl.ac.uk"
type="cite">
<pre wrap="">
All the best
Jörg
On Dienstag 15 September 2015 Jeff Becker wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Jörg,
Have you tried using the subnet manager from Mellanox OFED (which is
free)? That's what we use on our big heterogeneous cluster at NASA.
HTH
-jeff
On 09/15/2015 08:55 AM, Jörg Saßmannshausen wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Dear all,
I am a bit confused and I was wondering whether somebody on the list
could give me a bit of advice here.
I was previously using QLogic for my QDR InfiniBand network. I got one
master switch which got the licence for the InfiniBand installed and
things appear to work ok. At least I cannot detect any problems despite
adding switches and nodes to the fabric.
Now, we recently purchased a new cluster with 20 cores per node and here
I decided to go for FDR to be a bit more future proofed as well. So I
got the 'normal' licence from Mellanox for the cluster. I got one
licence per node so I assumed that was ok.
Now, we are in the process to set up another cluster with a mixture of
older and newer hardware. Again I have decided to opt for the FDR simply
to be a bit more future proofed. And this is where the confusion comes
in.
Apparently I do need now the UFM (Unified Fibre Manager) from Mellanox to
run the InfiniBand. However, the normal licence is only for up to 16
cores per node and I would need the more expensive exhanced licence.
From what I and a colleague of mine can see the UFM is nothing more than
the
requires subnet manager plus some diagnostic tools.
There are two questions here:
- do we really need the exhanced UFM licence or is that just a way to
make money?
- would the open source subnet manage work as well and would the open
source diagnostic tools be ok?
- why do I need to pay for a licence for each node? Somehow I cannot
recall having done that in the past.
Unfortunately, InfiniBand is not my strong side and thus I would
appreciate and advice here.
All the best from a meanwhile sunny London
Jörg
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</blockquote>
</blockquote>
<pre wrap="">
</pre>
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