I certainly cannot speak for the VMC project, but application migration
and fault tolerance (the primary benefits other than easy access to
heterogeneus environments from VMs) are always going to result in a
peformance hit of some kind. You cannot expect to do more things with no
overhead. There is great value in introducing HA concepts into an HPC
cluster depending on the goals and configuration of the cluster in
question (as always).
I cannot count the number of times a long running job (weeks) crashed,
bumming me out as a result, even with proper checkpointing routines
integrated into the code and/or system.
As a funny aside, I once knew a sysadmin who applied 24 hour timelimits to
all queues of all clusters he managed in order to force researchers to
think about checkpoints and smart restarts. I couldn't understand why so
many folks from his particular unit kept asking me about arrays inside the
scheduler submission scripts and nested commends until I found that out.
Unfortunately I came to the conclusion that folks in his unit were
spending more time writing job submission scripts than code... well...
maybe that is an exaggeration.
-geoff
Am 16.01.2008, 14:19 Uhr, schrieb Douglas Eadline <[EMAIL PROTECTED]>:
While your project looks interesting and I like the idea of
VMs, however I have not seen a good answer to the fact that VM = layers
and in HPC layers = latency. Any thoughts? Also, is it open source?
--
Doug
Greetings,
I would like to announce the availability of VMC (Virtual Machine
Console). VMC is an attempt to provide an opensource, web-based VM
management infrastructure. It uses libvirt as the underlying library
to manage para-virtualized Xen VMs. In time we intend to scale this to
manage VM clusters running HPC applications.
You can find out more on our "Introduction to VMC" page:
http://www.sxven.com/vmc
List of current features and future plans:
http://www.sxven.com/vmc/features
To get started, we have made available a "VMC Install" document:
http://www.sxven.com/vmc/gettingstarted
We invite people to take a look at VMC and tell us what you like and
what you don't like. If you have any problems, questions or
suggestions please feel free to contact us at [EMAIL PROTECTED] or post
them on our forum:
http://forum.sxven.com/
Best regards,
Meng Kuan
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--
Doug
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--
-------------------------------
Geoff Galitz, [EMAIL PROTECTED]
Blankenheim, Deutschland
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