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2006-09-06 01:00:41 UTC
http://news.zdnet.com/2100-9584_22-6112439.html
IBM to build Opteron-Cell hybrid supercomputer
By Stephen Shankland, CNET News.com
Published on ZDNet News: September 5, 2006, 1:12 PM PT
IBM has won a bid to build a supercomputer called Roadrunner that will
include not just conventional Opteron chips but also the Cell processor
used in the Sony Playstation, CNET News.com has learned.
The supercomputer, for the Los Alamos National Laboratory, will be the
world's fastest machine and is designed to sustain a performance level
of a "petaflop," or 1 quadrillion calculations per second, said U.S.
Sen. Pete Domenici earlier this year. Bidding for the system opened in
May, when a congressional subcommittee allocated $35 million for the
first phase of the project, said Domenici, a Republican from New
Mexico, where the nuclear weapons lab is located.
Now sources familiar with the machine have said that IBM has won the
contract and that the National Nuclear Security Administration is
expected to announce the deal in coming days. The system is expected to
be built in phases, beginning in September and finishing by 2007 if the
government chooses build the full petaflop system.
There's plenty of competition in the high-end supercomputing race,
though. Japan's Institute of Physical and Chemical Research, called
RIKEN, announced in June that it had completed its Protein Explorer
supercomputer. The Protein Explorer reached the petaflop level, RIKEN
said, though not using the conventional Linpack supercomputing speed
test.
Representatives of IBM and Los Alamos declined to comment for this
story. The NNSA, which oversees U.S. nuclear weapons work at Los Alamos
and other sites, didn't immediately respond to a request for comment.
Hybrid supercomputers
The Roadrunner system, along with the Protein Explorer and the
seventh-fastest supercomputer, Tokyo Institute of Technology's Tsubame
system built by Sun Microsystems, illustrate a new trend in
supercomputing: combining general-purpose processors with
special-purpose accelerator chips.
"Roadrunner is emphasizing acceleration technologies. Coprocessor
acceleration is intrinsic to that particular design," said John
Gustafson, chief technology officer of start-up ClearSpeed
Technologies, which sells the accelerator add-ons used in the Tsubame
system. (Gustafson was referring to the Roadrunner project in general,
not to IBM's winning bid, of which he disclaimed knowledge.)
IBM's BladeCenter systems are amenable to the hybrid approach. A single
chassis can accommodate both general-purpose Opteron blade servers and
Cell-based accelerator systems. The BladeCenter chassis includes a
high-speed communications links among the servers, and one source said
the blades will be used in Roadrunner.
Advanced Micro Devices' Opteron processor is used in supercomputing
"cluster" systems that spread computing work across numerous small
machines joined with a high-speed network. In the case of Roadrunner,
the Cell processor, designed jointly by IBM, Sony and Toshiba, provides
the special-purpose accelerator.
Cell originally was designed to improve video game performance in the
PlayStation 3 console. The single chip's main processor core is
augmented by eight special-purpose processing cores that can help with
calculations such as simulating the physics of virtual worlds. Those
engines also are amenable to scientific computing tasks, IBM has said.
Using accelerators "expands dramatically" the amount of processing a
computer can accomplish for a given amount of electrical power,
Gustafson said.
"If we keep pushing traditional microprocessors and using them as
high-performance computing engines, they waste a lot of energy. When
you get to the petascale regions, you're talking tens of megawatts when
using traditional x86 processors" such as Opteron or Intel's Xeon, he
said.
"A watt is about a dollar a year if you have the things on all the
time," so 10 megawatts per year equates to $10 million in operating
expenses, Gustafson said.
A new partnership
The Los Alamos-IBM alliance is noteworthy for another reason as well.
The Los Alamos lab has traditionally favored supercomputers from
manufacturers other than IBM, including Silicon Graphics, Compaq and
Linux Networx. Its sister lab and sometimes rival, Lawrence Livermore,
has had the Big Blue affinity, housing the current top-ranked
supercomputer, Blue Gene/L.
Los Alamos also houses earlier Big Blue behemoths such as ASC Purple,
ASCI White and ASCI Blue Pacific. (ASCI stood for the Accelerated
Strategic Computing Initiative, a federal effort to hasten
supercomputing development to perform nuclear weapons simulation work,
but has since been modified to the Advanced Simulation and Computing
program.)
Blue Gene/L has a sustained performance of 280 teraflops, just more
than one-fourth of the way to the petaflop goal.
The U.S. government has become an avid supercomputer customer, using
the machines for simulations to ensure nuclear weapons will continue to
work even as they age beyond their original design lifespans. Such
physics simulations have grown increasingly sophisticated, moving from
two to three dimensions, but more is better. Los Alamos expects
Roadrunner will increase the detail of simulations by a factor of 10,
one source said.
For twice-yearly ranking of supercomputers called the Top500 list,
computers are ranked on the basis of a benchmark called Linpack that
measures how many floating-point operations per second--"flops"--it can
perform. Linpack is a convenient but incomplete representation of a
machine's total ability, but it's nevertheless widely watched.
IBM has dominated the Top500 list with its Blue Gene/L supercomputing
designs. But U.S. models haven't always led, and there's been some
international rivalry: A Japanese system, NEC's Earth Simulator, topped
the list for years.
IBM and petaflop computing are no strangers. Although customers can buy
the current Blue Gene/L systems or rent their processing power from
IBM, Blue Gene actually began as a research project in 2000 to reach
the petaflop supercomputing level.
IBM to build Opteron-Cell hybrid supercomputer
By Stephen Shankland, CNET News.com
Published on ZDNet News: September 5, 2006, 1:12 PM PT
IBM has won a bid to build a supercomputer called Roadrunner that will
include not just conventional Opteron chips but also the Cell processor
used in the Sony Playstation, CNET News.com has learned.
The supercomputer, for the Los Alamos National Laboratory, will be the
world's fastest machine and is designed to sustain a performance level
of a "petaflop," or 1 quadrillion calculations per second, said U.S.
Sen. Pete Domenici earlier this year. Bidding for the system opened in
May, when a congressional subcommittee allocated $35 million for the
first phase of the project, said Domenici, a Republican from New
Mexico, where the nuclear weapons lab is located.
Now sources familiar with the machine have said that IBM has won the
contract and that the National Nuclear Security Administration is
expected to announce the deal in coming days. The system is expected to
be built in phases, beginning in September and finishing by 2007 if the
government chooses build the full petaflop system.
There's plenty of competition in the high-end supercomputing race,
though. Japan's Institute of Physical and Chemical Research, called
RIKEN, announced in June that it had completed its Protein Explorer
supercomputer. The Protein Explorer reached the petaflop level, RIKEN
said, though not using the conventional Linpack supercomputing speed
test.
Representatives of IBM and Los Alamos declined to comment for this
story. The NNSA, which oversees U.S. nuclear weapons work at Los Alamos
and other sites, didn't immediately respond to a request for comment.
Hybrid supercomputers
The Roadrunner system, along with the Protein Explorer and the
seventh-fastest supercomputer, Tokyo Institute of Technology's Tsubame
system built by Sun Microsystems, illustrate a new trend in
supercomputing: combining general-purpose processors with
special-purpose accelerator chips.
"Roadrunner is emphasizing acceleration technologies. Coprocessor
acceleration is intrinsic to that particular design," said John
Gustafson, chief technology officer of start-up ClearSpeed
Technologies, which sells the accelerator add-ons used in the Tsubame
system. (Gustafson was referring to the Roadrunner project in general,
not to IBM's winning bid, of which he disclaimed knowledge.)
IBM's BladeCenter systems are amenable to the hybrid approach. A single
chassis can accommodate both general-purpose Opteron blade servers and
Cell-based accelerator systems. The BladeCenter chassis includes a
high-speed communications links among the servers, and one source said
the blades will be used in Roadrunner.
Advanced Micro Devices' Opteron processor is used in supercomputing
"cluster" systems that spread computing work across numerous small
machines joined with a high-speed network. In the case of Roadrunner,
the Cell processor, designed jointly by IBM, Sony and Toshiba, provides
the special-purpose accelerator.
Cell originally was designed to improve video game performance in the
PlayStation 3 console. The single chip's main processor core is
augmented by eight special-purpose processing cores that can help with
calculations such as simulating the physics of virtual worlds. Those
engines also are amenable to scientific computing tasks, IBM has said.
Using accelerators "expands dramatically" the amount of processing a
computer can accomplish for a given amount of electrical power,
Gustafson said.
"If we keep pushing traditional microprocessors and using them as
high-performance computing engines, they waste a lot of energy. When
you get to the petascale regions, you're talking tens of megawatts when
using traditional x86 processors" such as Opteron or Intel's Xeon, he
said.
"A watt is about a dollar a year if you have the things on all the
time," so 10 megawatts per year equates to $10 million in operating
expenses, Gustafson said.
A new partnership
The Los Alamos-IBM alliance is noteworthy for another reason as well.
The Los Alamos lab has traditionally favored supercomputers from
manufacturers other than IBM, including Silicon Graphics, Compaq and
Linux Networx. Its sister lab and sometimes rival, Lawrence Livermore,
has had the Big Blue affinity, housing the current top-ranked
supercomputer, Blue Gene/L.
Los Alamos also houses earlier Big Blue behemoths such as ASC Purple,
ASCI White and ASCI Blue Pacific. (ASCI stood for the Accelerated
Strategic Computing Initiative, a federal effort to hasten
supercomputing development to perform nuclear weapons simulation work,
but has since been modified to the Advanced Simulation and Computing
program.)
Blue Gene/L has a sustained performance of 280 teraflops, just more
than one-fourth of the way to the petaflop goal.
The U.S. government has become an avid supercomputer customer, using
the machines for simulations to ensure nuclear weapons will continue to
work even as they age beyond their original design lifespans. Such
physics simulations have grown increasingly sophisticated, moving from
two to three dimensions, but more is better. Los Alamos expects
Roadrunner will increase the detail of simulations by a factor of 10,
one source said.
For twice-yearly ranking of supercomputers called the Top500 list,
computers are ranked on the basis of a benchmark called Linpack that
measures how many floating-point operations per second--"flops"--it can
perform. Linpack is a convenient but incomplete representation of a
machine's total ability, but it's nevertheless widely watched.
IBM has dominated the Top500 list with its Blue Gene/L supercomputing
designs. But U.S. models haven't always led, and there's been some
international rivalry: A Japanese system, NEC's Earth Simulator, topped
the list for years.
IBM and petaflop computing are no strangers. Although customers can buy
the current Blue Gene/L systems or rent their processing power from
IBM, Blue Gene actually began as a research project in 2000 to reach
the petaflop supercomputing level.