[GE users] [OT] SGE and Eucayptus clouds

llorente llorente at dacya.ucm.es
Fri Mar 12 22:32:54 GMT 2010

Dear Razvan,

> OpenNebula looks good went you look only at the documentation. I implemented 
> an infrastructure with OpenNebula and in reality is does less.

This is a very serious comment. Please I would like you clarify which part of our documentation does not reflect the reality of our technology.

> You can do a 
> better OpenNebula by just writeing your own scripts using libvirt

OpenNebula only uses scripts to interface to the underlying services for virtualization, storage, and networking. Most part of OpenNebula is C++. I find very difficult to implement all the features at http://www.opennebula.org/documentation:features only using libvirt 

> On the test 
> I used OpenNebula that comes with Ubuntu 9.10. I tried to installit from 
> source but it failled to start. At the esence OpenNebula is just a bunch on 
> ruby scripts that copies over ssh the virtual hard-drive and starts a machine 
> on that host.

This is very extreme way to simplify thinks, is SGE just a bunch of scripts to remotely execute jobs using remote execution?. 

> When is comes to network all settings are in vane because the 
> IP's are alocated via the usual dhcp way (from the dhcp server currently on 
> the network).

Again, you are simplifying the technology. Please have a look at http://www.opennebula.org/documentation:rel1.4:vgg 

Sean, If you are interested in using OpenNebula for dynamic execution of virtual cluster please have a look at:

- BIG Grid VM Working Group: http://lists.opennebula.org/pipermail/users-opennebula.org/2010-February/001459.html
- Batch Virtualization Project at CERN: http://indico.cern.ch/sessionDisplay.py?sessionId=15&slotId=0&confId=55893#2009-09-21
-  http://blog.dsa-research.org/?p=98

The first reference includes a report (https://wiki.nbic.nl/images/f/f6/ProgressReport-1.0.pdf) comparing  different open source technologies for cloud computing in the execution of virtualized computing clusters.



> -----Original Message-----
> From: seandavi [mailto:seandavi at gmail.com]
> Sent: Friday, March 12, 2010 9:15 PM
> To: users at gridengine.sunsource.net
> Subject: Re: [GE users] [OT] SGE and Eucayptus clouds
> On Fri, Mar 12, 2010 at 1:08 PM, iank <ikaufman at ucsd.edu> wrote:
>> On Fri, Mar 12, 2010 at 8:55 AM, seandavi <seandavi at gmail.com> wrote:
>>> We are a government lab and paying for Amazon cloud time is likely to
>>> be problematic.  I wondered if anyone had thoughts or experience with
>>> using SGE's new abilities to add nodes dynamically to a private cloud,
>>> such as a Eucalyptus cloud (http://open.eucalyptus.com/)?  We don't
>>> have such a cloud in place, but I would like to know what other folks
>>> are thinking about the issues of SGE and private/institutional clouds.
>> This is something I have looked into a little, but not enough to really say
>> much yet. I support a group that is very interested. I am also looking into
>> OpenNebula, since it also integrates with SGE somewhat to manage
>> Xen, VMWare and KVM images as well as Eucalyptus like cloud images.
>> One advantage is that once the "job" terminates, the image is still retained
>> as opposed to getting deleted.
>> The OpenNebula documentation has very good examples regarding using
>> SGE to dynamically manage your cloud.
> Thanks, Ian.  OpenNebula does look a little bit more mature than
> Eucalyptus.  I'll look into it in more detail.
> Thanks,
> Sean
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Ignacio M. Llorente, Full Professor (Catedratico): http://dsa-research.org/llorente
DSA Research Group:  web http://dsa-research.org and blog http://blog.dsa-research.org
OpenNebula Open Source Toolkit for Cloud Computing: http://www.OpenNebula.org
RESERVOIR European Project in Cloud Computing: http://www.reservoir-fp7.eu


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