Linux Claims 4 of the Top 5 Supercomputer Spots
Anonymous Coward writes to tell us that the November 2005 list of supercomputers has been published. Certainly something to note is that four of the top five use linux. Relatedly Multiflow writes "CNET is reporting that the number of supercomputers on the Top500 list which use Intel Itanium 2 microprocessors has fallen by almost 50% in the past year. While new higher performance Itanium chips are in the pipeline, the article reports that 64 bit Xeons and Opterons have increased their representation on Top500."
It may be a niche market but what a market it is. Rock on Linux!
A resurgence in Intel-based machines after their push for increased performance per watt. Power efficiency is right on the list of those who plan the building of supercomputers, right aside performance per dollar.
It makes perfect sense!!
With windows licenes costing about $300 for a couple of processors
With the total cost it would be more powerful to get linux and spend the left over increasing its performance.
Are these individual supercomputers? BlueGene comes with 131072 processors. Is this one (1) computer? Or 131072? If this is not one computer, then what does list tell us? That 131072 processors are faster than 1 processor?
(The top 6 are all from the US - followed by Japan and Europe.)
And where can we exactly find these publishements?
Looking at this chart http://www.top500.org/lists/2005/11/l/Operating_Sy stem it actually appears that the OS ran on all system are:
- Linux: 72.2%
- Max OS: 1.0%
- Others 4.4%
- UNIX and Linux: everything else (~22%)
So it appears that Linux/UNIX* runs on about 95% of all super computers. The Story headline should have been:
Linux Claims Almost All Supercomputers Spots
What a scoop.
*Linux,UNIX, what's the difference really?
Look on Slashdot's front page. Do enough refreshes and you'll see a massive ad for a book that basically proclaims you are a moron if you don't switch to Linux. All the time I see evangilism on how much better things would be if we all ran Linux. No viruses, no license fees, no crashes, etc, etc. There are a great many in the Linux community that seem to believe the ultimate Linux goal should be the domaination of the OS market. Of course non are willing to change Linux in the ways needed for this, but they state it as a goal all the same.
Some people don't care about Linux market share, but many do, including most of Slashdot and some very notable figures. I've often been berated because I won't switch, and told my reasons for refusing to do so are invalid.
http://en.wikipedia.org/wiki/Amiga
I find it funny that the US's challenger to the Earth Simulator came out 3 years later, used almost twice as many processors, and only has a slight performance advantage.
6) Sandia National Laboratories
United States Red Storm Cray XT3, 2.0 GHz
Cray Inc. #Processors: 10880 Year: 2005 Rmax: 36190 Rpeak: 43520
7) The Earth Simulator Center
Japan Earth-Simulator
NEC #Processors: 5120 Year: 2002 Rmax: 35860 Rpeak: 40960
Here are the top 500 systems sorted by efficiency:
NEC Vector: 89.9%
Cray Vector: 84.0%
Hitachi Vector: 82.2%
Itanium: 80.8%
AMD x86-64: 74.0%
POWER: 72.8%
Alpha: 71.2%
Intel x86-64: 60.2%
PA-RISC: 54.0%
Intel x86: 53.2%
and lucky last,
SPARC: 49.6%
Interesting things to note:
1) After all these years, vector machines are still on top
2) "The best of the rest" are actually Itanium (IA-64) machines
3) Efficiency is important, because for real-world applications (weather forecasting, earthquake simulation or whatever) you are likely to see even lower efficiencies. If a machine can't even run linpack (dense linear algebra) well, it might really hit a brick wall when it comes time to solving more difficult problems.
4) These stats were made by visiting the top500's "stats" page, dividing the aggregate Rmax/Rpeak for each processor family, and then sorting them.