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New Top500 List Released at Supercomputing '06
Posted by
ScuttleMonkey
on Wed Jun 28, 2006 01:18 PM
from the measuring-contest dept.
from the measuring-contest dept.
Guybrush_T writes "Today the 27th Edition of the Top 500 List of World's Fastest Supercomputers was released at ISC 2006. IBM BlueGene/L remains the world fastest computer with 280.6 TFlop/s. No new US system in the top10 this year, since they all come from Europe and Japan. The French Cluster at CEA (French NNSA equivalent) is number 5 with 42.9 TFlop/s. The Earth simulator (no 10) is no longer the largest system in Japan since the GSIC Center built a 38.2 TFlop/s Cluster, reaching the 7th place. The German cluster at Juelich is number 8 with 37.3 TFlop/s. The full list, and the previous 26 lists, are available on the Top500.org site."
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What, no microsoft? (Score:4, Funny)
Re:What, no microsoft? (Score:5, Funny)
Well, they only published the requirements for Vista a few weeks ago; I'm sure they'll do better next year.
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Re:What, no microsoft? (Score:2, Informative)
Re:What, no microsoft? (Score:5, Informative)
OS (# systems) (Percent)
Linux 367 73.40%
Windows 2 0.40%
Unix 98 19.60%
BSD 4 0.80%
Mixed 24 4.80%
Mac OS 5 1.00%
Totals 500 100%
Alternately there's a more refined breakdown listing them by Operating System type and version [top500.org]. Oddly, "Linux" is listed both as an operating system family and as a distinct flavor/distro
As for the Windows-based systems, there were one each for Windows 2003 Server and Windows Compute Cluster Server 2003.
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Re:What, no microsoft? (Score:3, Interesting)
I realize internet-linked PCs are a different beast, but given the wide range of architectures on the top 500 supercomputer list, is it such a stretch to consider this a "supercomputer"? An
Re:What, no microsoft? (Score:5, Funny)
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Re:What, no microsoft? (Score:4, Informative)
http://en.wikipedia.org/wiki/Seti@home [wikipedia.org]
IBM's Blue Gene is faster (and more flexible). Big networks of computers like SETI's are good at crunching static radio telescope data or brute force RC5 cracking. When it comes to most real world problems, the nodes must communicate and share data, which over the internet makes it far too slow. Real supercomputers do not use any type of networking between nodes, they have a shared memory bus.
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Re:What, no microsoft? (Score:3, Informative)
Re:What, no microsoft? (Score:4, Informative)
Don't say that, all it does is show how little you know.
There are 2 common types of interfaces between nodes on a supercomputer: shared memory and message passing.
Shared memory is where all the nodes can access memory over some sort of network. In order for communication to happen all 2 nodes need to do is read and write to the same location in memory. There is little talk about the network protocol used at this level because for the most part it is an emulation of layer 2 of the OSI (as if all you are doing is ordering the hardware around).
Message passing would best be described in terms of layer 7. Communication occurs between 2 nodes via messages that are sent back and forth (hence the name). The most common message passing scheme is MPI. In MPI, there is a concept of a sender and a reciever. The reciever calls MPI_Recv and the sender calls MPI_Send and a message is sent from send to recv. You could almost think of this as an HTTP communication; the server is listening, the client sends information, the server sends back, except in MPI the reciever must be calling MPI_Recv and waiting for a send from a specific sender and the sender must call MPI_Send to send the information to the reciever (there really [well, sorta] isn't a concept of a timeout). In my experience, this makes MPI (I use MPICH2) difficult to debug, if A calls send to B and B calls send to A at the same time, your program blows up (often with very little useful information).
On the cluster I do my work on, the implementation of MPI sends TCP/IP packets over ethernet (much like 256 of this top500 list). The libraries could be written to do the work over Myrinet or any other network.
For future reference please learn some factual information before you go spouting bull. If you follow this [top500.org] link, and choose interconnect family, you would find that most of the supercomputers in the top500 list are using some standard network interconnect.
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280 flops not fast enough (Score:2, Insightful)
Damn... (Score:2, Funny)
From 11 to 451... (Score:5, Interesting)
I feel old...
Re:From 11 to 451... (Score:5, Funny)
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how many aren't listed? (Score:5, Interesting)
If you look at the list, several of the computers/clusters are known simply as "Classified". It makes me wonder if those at the top really represent the top 10 most powerful supercomputers out there. I'm willing to be the US government, for one, has a couple of military use supercomputers up there that they aren't even willing to acknowledge the existance of.
At the other end of the spectrum, how many smaller clusters aren't on the list simply because the administrator doesn't have time to shut the entire thing down to run a LINPACK benchmark? The cluster I/we use [ucsf.edu] would easily make it into the top 450, and maybe higher, but our research is deemed more important than the glory that comes with being on the list.
Re:how many aren't listed? (Score:3, Funny)
Re:how many aren't listed? (Score:4, Informative)
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Re:how many aren't listed? (Score:5, Interesting)
Take, as an example, the Cray MTA. It's a product that's not even mentioned in their products page on their website. Yet, if you surf the net very carefully, you'll find out they're building the next version for their single customer of the product-line: the NSA. Even at the maximum configuration, the machine wouldn't make the top500 list, but it has features that make it uniquely suited to a few very peculiar application kernels. (single-virtual-cycle access to any memory within the distributed system)
Sure the department of defence uses supercomputers to predict the weather, improve weapons systems and simulate, but these are probably not done on systems we don't know exist. That sort of stuff is done at AHPCRC or ERDC, or at Beoing/lochead-martin/Ratheon/etc. All of these sites have huge HPC resources, just not the hugest of the huge.
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Re:how many aren't listed? (Score:3, Informative)
Not supercomputers in the sense they are being discussed here. The top500 list is computers that excel at floating-point operations. I have never seen an encryption method which uses floating point at all. They all use integer operations. DES, RSA, AES, MD5, SHA-1, etc. All 100% integer. In most cases cracking encryption algorithms really boils down to some sort of a search algorithm, so it wouldn't suprise me if ther
Google (Score:5, Interesting)
Depends on definition of a computer? (Score:2)
Re:Google (Score:3, Insightful)
Does google have a supercomputer? Maybe. I'm not actually clear what use a "traditional" supercomputer would be to them. For one thing, "disk" IO is genrally not the forte of a supercomputer, at least compared to processing power.
450K servers + 90 petabytes? (Score:3, Interesting)
131072 Processors! (Score:5, Funny)
Shit! I can remember when processors had that many transistors!
hello, olde programmers home, i'm enquiring for a vacancy...
Re:131072 Processors! (Score:3, Interesting)
You know, I reall like that metric, especially when you consider each of those processors probably has somewhere in the neighborhood of 100 million transistors.
Don't feel old, though. I cut my programming teeth on a processor with only 3500 transistors (6502). The transistors were probably so large, you didn't even need a clean room to manufacture it.
Missing Computer (Score:4, Funny)
Rmax vs Nmax (Score:4, Interesting)
Re:Rmax vs Nmax (Score:5, Informative)
Nmax represents the problem size. Nmax generally is aimed to be a problem that consumes as much memory as possible without swapping.
Rpeak is the theoretical max FLOPs possible according to the processor used. For example, a PPC chip is theoretically capable of 4 Flops per clock, so multiply the clock by the number of cores in the cluster. x86_64 is theoretically capable of 2 flops per clock, so multiply cores by two. Note that AMD clock for clock doesn't do any better than intel in *this* particular benchmark, so Intel clusters inherently can climb this list better, despite poor memory performance and other factors that make them less useful in a general supercomputing sense. Itanium can acheive better floating point (I believe 8 flops per clock).
And for anyone seeking to compare Rpeak/Rmax numbers with published Cell figures, keep in mind that game consoles (and by extension cell) brag about their single precision (32-bit) floating point performance, whereas this list only deals with double precision numbers (64 bit). Cell actually is nothing special at get top500 relevant benchmark results.
Many people feel this very specific benchmark is a poor indicator of the overall effectiveness of a cluster, and consider hpcc (which includes hpl as a subset) to be a better holistic method to evaluate the value of a cluster.
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US is doing badly (Score:5, Insightful)
Re:US is doing badly (Score:3, Informative)
http://www.top500.org/system/8128 [top500.org]
Non-American nationalism (Score:3, Insightful)
A common story occurance on slashdot for the submitter to highlight some deep deficiency in American business, technology, or way of life, which is then inevitably followed by non-American dick-swinging nationalism of why someone else does it better. This is a perfect example.
Googleplex? (Score:3, Interesting)
Blue Gene? (Score:3, Funny)
Re:Blue Gene? (Score:5, Funny)
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Super computers on our desks? (Score:4, Interesting)
you see a 2.8Ghz system with 1024 processors or some such.
Sorry I remember working on repairing a Univac computer when I was in the Navy and how amazing it sounded that Cray had produced this a super computer that could do 800
million operations a second.
(Circa 1980 or so)
You could have one of these computers for I think it was 13 Million dollars.
And how fabulous that the power supply was actually under the circular bench
so you could sit on your investment.
Consider the processing power we have now a days on our desks. A lowly
3 Ghz P4 Laptop with 2 GB of dynamic ram and 60 GB of Hard drive storage.
I've yet to see a pair up with our single or dual desktop computers today
and where they sit back in the super computer days of old. If anyone
has a link or info I'd love to hear about it.
Thanks,
Nestalgia is the romance of historic madness.
Re:Super computers on our desks? (Score:4, Informative)
SSE was when intel "got it right".
And it's still not that commonly used a feature.
Parent
But does it run... (Score:5, Funny)
I wonder (Score:4, Interesting)
What? No botnets listed? (Score:3, Funny)
The Network is the Computer (Score:5, Funny)
Apple is still holding up well (Score:5, Interesting)
It's too bad this list doesn't mention cost. When Virginia Tech built its first cluster, the big news was how absurdly inexpensive it was in relation to other systems. It would be interesting to learn if that still holds true.
petaflop in 2008-2009? (Score:4, Informative)
"Exaflops in 2020!"
Distributed Computing Wins Again! (Score:4, Interesting)
SETI@Home [berkeley.edu] is now operated exclusively through BOINC and it alone is doing over 167 TeraFLOPS [boincstats.com] right now, putting the SETI@Home network in second place, only behind BlueGene/L (if such distributed systems were counted).
You can contribute your spare processor cycles too by downloading the BOINC client [berkeley.edu] and attaching to a cool project such as Rosetta@Home [bakerlab.org] which folds proteins as part of an effort to cure human diseases. Join the biggest "supercomputer" today!
Re:"Flop/s"??? (Score:2, Insightful)
FLoating point OPerations / second, with the / representing "per"
Re:"Flop/s"??? (Score:2, Informative)
Re:Misleading (Score:2)
#3
DOE/NNSA/LLNL
United States
ASC Purple - eServer pSeries p5 575 1.9 GHz
IBM
2006
Re:Cue the Vista / Linux / Beowulf cluster jokes (Score:3, Funny)
In Soviet Russia, a Beowulf cluster of Linux-running, not quite Vista-capable supercomputers imagine YOU!
On the other hand, in Korea, only old people imagine a Beowulf cluster of Linux-running, not quite Vista-capable supercomputers.
Oh! Won't somebody please think of the Beowulf clusters of Linux-running, not quite Vista-capable supercomputers?
Did I forget anything?
Re:Cue the Vista / Linux / Beowulf cluster jokes (Score:3, Funny)
Re:Cue the Vista / Linux / Beowulf cluster jokes (Score:4, Funny)
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Re:Can't they use water cooling (Score:3, Insightful)
Re:Can't they use water cooling (Score:5, Informative)
Plus then you'd have to have all that (very custom) cooling equipment, pumps, etc. You'd have to watch for leaks closely, which is also a problem with air cooling and the refrigerant lines, but those have a lot less surface area of pipe/connectors to go wrong: a loop per rack for rack-mounted cooling, not a loop per machine.
Plus, as other posters have said: we'd like accurate numbers.
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