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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
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An advantage of VM clusters is that they are very robust, highly reliable, and use hardware very efficiently since they can support many machine instances per node. A disadvantage is that they support many machine instances per node and can be over-provisioned to try and leverage the hardware to its maximum. I guess I'd also want to know if there's a guaranteed worst case level of performance. It might run great until another VM instance starts hammering the cluster node, and this could vary from day-to-day. There may also be problems with where you put the LDM queue (non-local disk) unless you plan to run it in memory.
Art
On Thu, 16 Jun 2011, Tyler Allison wrote:
those specs don't tell enough. what's the disk speed/IO? How much memory? How many CPU cores? I can build you the same specs as you have listed below on a Tandy 1000 from 1985. Sounds like they are wanting to spin you up on a VMware host. Nothing wrong with that so long as they provision enough horsepower to that image. Sent from my iPhone On Jun 16, 2011, at 9:07 AM, Gilbert Sebenste <sebenste@xxxxxxxxxxxxxxxxxxxxx> wrote:Hey everyone, So I am trying to be wooed from our campus IT department to get onto their cloud of servers. They say they could put on an any operating system that I want,presuming Centos 6.X when it gets released...and if so, they talk it to the moon: Up to 2 TB hard drive space 20 gigabit/sec throughput as of this fall to the Internet2/NLR 2 gb/sec to commodity Internet 24/7 monitoring as of this month Now backed up fully by a UPS and a new generator 3 sources of A/C from 2 rooftop units Mirrored in two different places in town, one on campus, one off-campus, and if one is destroyed, I can be back up within 20 minutes So...has anyone actually done this, and is it worth it? I'm afraid to slam everyone else in my "cloud". Or, is Mick Jagger right, should I stay off of this cloud? ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** Staff Meteorologist, Northern Illinois University **** E-mail: sebenste@xxxxxxxxxxxxxxxxxxxxx *** web: http://weather.admin.niu.edu ** ******************************************************************************* _______________________________________________ ldm-users mailing list ldm-users@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/_______________________________________________ ldm-users mailing list ldm-users@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
Arthur A. Person Research Assistant, System Administrator Penn State Department of Meteorology email: person@xxxxxxxxxxxxx, phone: 814-863-1563
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