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FF4m3

@rr.com

Top 500 Supercomputers - November 2012


Kearnstd
Space Elf
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join:2002-01-22
Mullica Hill, NJ
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not really a surprise.

Linux is open source and the people building the super computers can compile kernels to their exact needs from source.
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firephoto
We the people
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join:2003-03-18
Brewster, WA

1 recommendation

reply to FF4m3
Even the white pie dividers have more pie than Windows.
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shdesigns
Powered By Infinite Improbabilty Drive
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join:2000-12-01
Stone Mountain, GA
reply to FF4m3
Nice PR boost for AMD; uses Opteron CPU's


FF4m3

@rr.com
reply to firephoto
said by firephoto:

Even the white pie dividers have more pie than Windows.

LOL.


Archivis
Your Daddy
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join:2001-11-26
Earth
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reply to FF4m3
What the hell is "mixed"?


El Quintron
I dunno, lemme check my trollodex
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said by Archivis:

What the hell is "mixed"?

Multi-OS, and dual-boot machines I'd assume.
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Archivis
Your Daddy
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Earth
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Who does that on a super computer?


El Quintron
I dunno, lemme check my trollodex
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said by Archivis:

Who does that on a super computer?

That's a good question,

I would presume you could keep your Super Computer crunching or calculating while doing something else in a virtual machine, which would qualify as a mixed OS.

Your guess is as good as mine.
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Kearnstd
Space Elf
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Mullica Hill, NJ
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could mixed mean that some control terminal(or whatever you call what is used to send these number crunching monsters their next batch of jobs. as I am going to guess Titan has no keyboard and monitor port itself.) So would it be mixed if say a terminal running windows was sending the super computer jobs via SSH in Putty?

Or a workstation running Linux was sending commands to the super computer which is running Unix or BSD. would that count as one unit still and as such make it "mixed"
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BBBanditRuR
Dingbits

join:2009-06-02
Parachute, CO
reply to Archivis
Unknown - but whatever it is, it's declining.


Archivis
Your Daddy
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join:2001-11-26
Earth
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reply to FF4m3
The reason why most super computers run Linux is because most of the other operating systems aren't built for super computers. Servers are mostly virtualized now and are usually designed to run one major application per server.

I'm a Unix systems administrator, which includes AIX, Solaris, RedHat, SCO, and a handful of other flavors. AIX is meant to run on IBM Power Systems. They have some very powerful and stable equipment, but it isn't meant to run on a super computer, which is really just a bunch of other computers chained together.

The reason why Linux runs the super computers is because it is the only OS in which a person/company can write open source software to make it compatible with the hardware.
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A government big enough to give you everything you want, is strong enough to take everything you have. -MLK

Kearnstd
Space Elf
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Mullica Hill, NJ
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I cannot imagine how awesomely fast the kernel must compile on super computer grade hardware.
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[65 Arcanist]Filan(High Elf) Zone: Broadband Reports


Archivis
Your Daddy
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Earth
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You could be surprised. I don't work on any super computers, but I do work on servers that have multiple drawers of hardware, comprising of just a single server. These servers are usually multi-million dollar servers. They take a while to fire up and get to work. They don't actually run any OS that you're familiar with. They run their own OS that manages the hardware and then everything gets virtually sliced out so that you can run dozens or hundreds of virtual servers on a single physical server.

I've seen the high end stuff take up to 10-15 minutes to fully boot up.
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A government big enough to give you everything you want, is strong enough to take everything you have. -MLK


El Quintron
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said by Archivis:

I've seen the high end stuff take up to 10-15 minutes to fully boot up.

Wouldn't that account for it Launching all these individual virtual machines, and assigning the amount of cores and ram to them?
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FF4m3

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reply to FF4m3
Linux share in Supercomputer OS:

The supercomputers which employ Mixed Operating system use CNK/SLES 9.

SUSE Linux Enterprise Server
CNK operating system


Archivis
Your Daddy
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Earth
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reply to El Quintron
said by El Quintron:

said by Archivis:

I've seen the high end stuff take up to 10-15 minutes to fully boot up.

Wouldn't that account for it Launching all these individual virtual machines, and assigning the amount of cores and ram to them?

No.

These boot up times are strictly for powering on the servers. When you have dozens of cores and hundreds of gigs of RAM or even terabytes of RAM with multiple fibre cards and multiple network cards, it can take a while for everything to come up.

At that point, I can power on the virtual servers from there, which is standard OS boot time.

My example is talking about IBM Power frames running AIX. The frame can take 10-15 minutes to come up in some cases. There are virtual I/O servers that manage the hardware resources (an OS that virtualizes/load balances/creates redundancy) and then the actual LPARs (Logical Partitions, the equivalent to VMs in the rest of the world).
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A government big enough to give you everything you want, is strong enough to take everything you have. -MLK

dave
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reply to Archivis
said by Archivis:

What the hell is "mixed"?

Some processor nodes run one operating system, other nodes run a different operating system.

This might be done when the archiecture is such that different nodes have different specialization, e.g., compute node versus I/O node.

»en.wikipedia.org/wiki/Supercompu ··· _systems


kleeman
Australian Expat

join:2000-07-29
Nyack, NY
kudos:3
reply to FF4m3
Supercomputer clusters are turning into hobby items

»www.engadget.com/2012/09/13/supe ··· nd-lego/

with linux of course....
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dave
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not in ohio
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Naturally, that's a supercomputer architecture without (modern) supercomputer speeds.

You may be better off building a Cray-1.


FF4m3

@rr.com
said by Cray :

- Cray XC30 systems utilize the Cray Linux Environment™ (CLE).
- The Cray XK7 system ships with the latest Cray Linux Environment™ (CLE)
- Cray’s use of open standards in software (Linux-based operating system...
- Cray Sonexion provides a fully integrated, scale-out Lustre storage system for industry-standard Linux compute clusters.
- Operating System Cray Linux Environment (components include SUSE Linux SLES11, HSS and SMW software)
- HPC environments with a Linux-based operating system...

etc.


DarkLogix
Texan and Proud
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join:2008-10-23
Baytown, TX
kudos:3
reply to Archivis
said by Archivis:

Who does that on a super computer?

Lots of them

I was reading about one of the top10 awhile back
they had a mix of unix linux and BSD for different roles in the system

all one huge cluster with roles parted out into different clusters

the storage servers ran one OS that they picked was most ideal for it

the CPU crunching ran another

and I forgot what ran the third


FF4m3

@rr.com
reply to dave
said by Cray :

Cray XE6 systems utilize the Cray Linux Environment™ (CLE). CLE is a suite of high performance software which includes a Linux-based operating system designed to run large complex applications and scale efficiently to more than 500,000 processor cores. The Linux environment features a compute kernel which can be configured to match different workloads.


dave
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not in ohio
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reply to FF4m3
Doesn't come with a sofa, though.