NNSA Supercomputer Breaks Computing Record 266
Lecutis writes "National Nuclear Security Administration (NNSA) Administrator Linton F. Brooks announced that on March 23, 2005, a supercomputer developed through the Advanced Simulation and Computing program for NNSAs Stockpile Stewardship efforts has performed 135.3 trillion floating point operations per second (teraFLOP/s) on the industry standard LINPACK benchmark, making it the fastest supercomputer in the world."
and its only half the machine too! (Score:5, Informative)
From the press release... (Score:4, Informative)
Is there anything that will be able to touch this when it's complete?
Blue Gene? (Score:2, Informative)
Did you RTFA? (Score:5, Informative)
Did you read the fucking article?
"This performance was achieved at Lawrence Livermore National Laboratory (LLNL) at only the half-system point of the IBM BlueGene/L installation. Last November, just one-quarter of BlueGene/L topped the TOP500 List of the world's top supercomputers."
See, this is the SAME supercomputer that has already topped the list last November, so the latest record did NOT make it the fastest supercomputer in the world.
It already had been the fastest supercomputer in the world.
Link to the list (Score:5, Informative)
Re:Blue Gene? (Score:5, Informative)
Re:hmmmmm... (Score:4, Informative)
Dupe (Score:3, Informative)
This *is* Blue gene. (Score:3, Informative)
Or, at least the article's title:
"NNSA Supercomputer Breaks Computing Record: Exceeds 100 TERAFLOPS DOE/NNSA and IBM partnership on BlueGene/L, a tool for national security"
Re:From the press release... (Score:5, Informative)
Now, the X2, on the other hand, is a whale. They're talking 150 TFLOPS at roll-out next year (unimpressive) and 300 TFLOPS after the block 10 update the year after that (very impressive).
Of course, the X2 isn't working yet, so who the hell knows. But it's fun to think about.
Re:More important issues (Score:5, Informative)
It may be sad that we live in a world where nuclear weapons research is driving the computing power, but it doesn't mean that the power of BlueGene/L isn't going to be used for thousands of other peaceful scientific applications, too.
Re:hmmmmm... (Score:5, Informative)
Re:hmmmmm... (Score:2, Informative)
Re:hmmmmm... (Score:3, Informative)
Re:Neat (Score:5, Informative)
Linpack does its benchmarks using a more fine-grained algorithm, creating lots of communications for Message Passing to share segments of dense matrices for rather large linear systems. Not only is the number of nodes a factor, but so is the interconnect speed. If that cluster was using GigE for its interconnect, its Linpack benchmarks would not be nearly as impressive. Haven't RTFA but its likely that BlueGene/L is using Myranet or Infinband for its interconnect (or possibly a more proprietary backplane style interconnect, though that cluster is way too big for that).
These latest generations of high-speed interconnects (esp. Infinband) have brought clusters closer to the point of being near shared-memory performance and hence is more of a throughput test than anything else.
This description of the HPL benchmark (The "official" name for the Linpack benchmark) should provide some clarity as to how memory-dependent Linpack actually is:
The algorithm used by HPL can be summarized by the following keywords: Two-dimensional block-cyclic data distribution - Right-looking variant of the LU factorization with row partial pivoting featuring multiple look-ahead depths - Recursive panel factorization with pivot search and column broadcast combined - Various virtual panel broadcast topologies - bandwidth reducing swap-broadcast algorithm - backward substitution with look-ahead of depth 1.
http://www.netlib.org/benchmark/hpl/ [netlib.org]
They took a lot of time to get Linpack to be less shared-memory dependent, like adding the swap-broadcast algorithm (which i'm fairly certain was absent in the old mainframe version of Linpack), to make it more "fair" to run on a cluster versus a shared memory set up. However, on a typical cluster, Linpack can push your interconnect pretty hard, esp. if you are stuck on GigE. However, Linpack has _lots_ of settings and parameters to "tune" the benchmark for your particular cluster.
My point: Linpack/HPL is not an overall flops benchmark for a cluster. It measures the performance not only of double precision CPU performance, but also the performance of a cluster's interconnect.
Re:AMazing (Score:3, Informative)
Re:Human Intelligence? (Score:2, Informative)
Re:DOE's Senior Activity Center (Score:3, Informative)
And let's remember that almost everything in the current arsenal was designed and actually tested, not just worked up via computer. It takes a whole lot more computing power to run the thermodynamic and nuclear codes for simulation than it does to validate designs.
Re:Neat (Score:1, Informative)
Straight from my notes during the product brief at Yorktown by George Chiu, Senior Manager, Advanced Server Hardware Systems Research Division
Re:Neat (Score:2, Informative)
Just some minor corrections and informaton for those interested.
Myricom [myri.com] is the company, Myrinet is the protocol. Infiniband [google.com] is an open protocol. Myrinet has a maximum speed of 2.2Gb/sec while Infiniband can scale up to 30Gb/sec on a 16x PCI-E card and a 12x port on the switch.
As for what BlueGene/L uses, I don't think I'm at liberty to discuss that.
Re:Neat (Score:3, Informative)
And I quote:
The nodes are interconnected through multiple complementary high-speed low-latency networks, including a 3D torus network and a combining tree network. The physical machine architecture is targeted to be most closely tied to the 3D torus, a simple 3-dimensional nearest neighbor interconnect which is "wrapped" at the edges. An independent combining tree network provides for fast global operations, such as global max or global sum.
http://www.top500.org/sublist/System.php?TB=2&id=
Enjoy.
Re:and its only half the machine too! (Score:3, Informative)
And the real risk is what happens if a group which is unbeholden to a public body, such as an international terrorist group, obtains such a device. They would be able to strike with one of these weapons but be immune to any counterattack.