[Beowulf] Diskless Phi node installs?

Olli-Pekka Lehto Olli-Pekka.Lehto at csc.fi
Mon May 6 00:31:14 PDT 2013

I've been stuck with the same issue. The /opt/intel path is hardcoded into the MPSS and it is not a good idea to move it elsewhere. I've understood that Intel is working on making things a bit more friendly for diskless installations.

In the meantime I've been planning to do away with the RPMs completely and manually organizing the files into node-local and non-local items: With all the non-local files mounted via NFS and symlinked to /opt/intel and the local ones directly on the compute node filesystem image. 

Not the cleanest way and adds a bit of pain to any upgrades but should work.

It's not the highest thing on my priority list but if I have the chance to test it I'll share my experience. 

Best regards,
From: beowulf-bounces at beowulf.org [beowulf-bounces at beowulf.org] On Behalf Of Christopher Samuel [samuel at unimelb.edu.au]
Sent: Monday, May 06, 2013 8:11 AM
To: beowulf at beowulf.org
Subject: [Beowulf] Diskless Phi node installs?

Hash: SHA1

Hi folks,

Our new diskless Intel cluster has 10 nodes with Xeon Phi's in them,
and I'm wondering if anyone has had any luck with getting the extra
bloat out of the RAM disk?   We're using xCAT to manage the cluster.

Basic problem is none of them support relocation:

[root at old-barcoo-m knc]# rpm -qip *.rpm | grep -i relocat
Name        : intel-mic                    Relocations: (not relocatable)
Name        : intel-mic-cdt                Relocations: (not relocatable)
Name        : intel-mic-flash              Relocations: (not relocatable)
Name        : intel-mic-gdb                Relocations: (not relocatable)
Name        : intel-mic-gpl                Relocations: (not relocatable)
Name        : intel-mic-kmod               Relocations: (not relocatable)
Name        : intel-mic-kmod               Relocations: (not relocatable)
Name        : intel-mic-micmgmt            Relocations: (not relocatable)
Name        : intel-mic-mpm                Relocations: (not relocatable)
Name        : intel-mic-sysmgmt            Relocations: (not relocatable)

They chuck all their stuff onto the local filesystem so you get about
1GB of extra stuff on an image compared to a non-phi node (which only
lacks the Phi related RPMs).

The only one you need to deal with is the intel-mic-gpl RPM as that has
the Linux distro for the Phi in it and so has the largest footprint (way
over 700MB) and includes compilers, etc.

All the best,
- --
 Christopher Samuel        Senior Systems Administrator
 VLSCI - Victorian Life Sciences Computation Initiative
 Email: samuel at unimelb.edu.au Phone: +61 (0)3 903 55545
 http://www.vlsci.org.au/      http://twitter.com/vlsci

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