Even though without much hype, Intel Itanium is still here and will be in the coming years. However, the evolution of the family may just take a little bit different route than other microprocessors of our times, says Intel.
Intel Itanium was not widely presented at Intel Developer Forum last month, but this does not mean that the IA64 micro-architecture is fading away. During a dedicated Intel Itanium conference principal engineer of Itanium processor architecture at Intel said that the company continues to work on improvements for its 64-bit chips. But rather than quickly increase the number of cores, Intel aims to boost single-thread performance of each core for the Itanium.
“We have not abandoned single-core performance and we’re looking to increase that with each generation (of the Itanium processor) as we go forward, some with greater transitions than others,” said Cameron McNairy, principal engineer of Itanium Processor Architect at Intel at Gelato Itanium Conference and Expo held in Singapore, reports Cnet News.com.
Intel is now working hard to deliver the code-named Tukwila processor in 2008. The new Itanium 2 will be made using 65nm technology process and feature four physical processing engines with Intel Hyper-Threading technology. The new chip will have onboard memory controller and will support Intel Quick Path Interconnect (QPI) bus (previously known as common serial interconnect or CSI) in order to be compatible with platforms developed for Intel Xeon processors.
But despite of rather significant platform architecture change, Intel stresses its intentions to boost single-thread performance of the forthcoming Itanium 2 microprocessors as there are still certain applications that mostly rely on single-threaded execution.
“There are some workloads that you just need to have single-core performance in order to carry and to get the job done, and those are the kinds of things we are targeting. Not everything can scale and, truth be told, if you don't address the single-core performance segment, you’re going to miss out on some opportunities,” said Mr. McNairy.
Given that Itanium was developed specifically for multi-processor systems, putting more cores on a single chip may not be a crucial task for Intel as those who need multiple processing engines can obtain more processors. Therefore, increasing the efficiency of each core may lead to higher performance boosts overall.
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Discussion started: 10/05/07 11:02:05 AM
Latest comment: 10/10/07 01:41:54 PM
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Erm..... What the hell is Itanium lol? This is the first time I've heard of it. Is it some kind of laptop chip, or server chip? I thought Penryn\Nahalem was the next big thing =?
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Posted by: gamebro

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Date: 10/05/07 11:02:05 AM]
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Intel's (other companies helped like HP) native 64bit chip for server/super computing, been around for a little while now.
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Posted by: Cow187

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Date: 10/05/07 11:54:35 AM]
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I first heard about Itanium 8 years ago back in '99.
From what I understand EPIC IA64 is a very powerful architecture. It's downfall however, is that it doesn't natively support the more common x86 code.
Sure you can emulate but that makes for more bloat, inefficiency and general BS that people don't want to mess with (except for Intel).
Also, AMD is legally forbidden to copy the Itanium instruction set for it's chips.
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Posted by: cheeseman

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Date: 10/06/07 11:26:44 AM]
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Well AMD dose have a cross licensing agreement with Intel, which is why AMD chips can use SSE 1,2, and 3, and why Intel uses 64-bit extensions and a Non Execute bit instruction in their Core 2 Processors. Still, Itanium would be an instruction set and architecture owned only by Intel so only those whom had a license from Intel Could produce compatible chips. That's one reason why it hasn't taken off, people don't want their applications to be tied to Intel CPU's they way some of them use to tied to Sparc CPU's and Solaris. Yeah you can write applications to run on most of the Unixs, but some people "optimized" them for Solaris so they had to be re-written to run on anything else even with a Sparc CPU.
Honestly I think the best thing Intel could do right now for the Itanium is provide more free programming tools to help Programmers port code easily between the EPIC architecture and other architectures. Just give them enough to get interested and buy the hardware so that way they can charge a premium for better tools, kinda like they do with their x86 chips right now ^_^. They could also help the open source community by improving the GCC compiler with tools and optomizations for Itanium Architecture.
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Posted by: Megamanx00

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Date: 10/10/07 01:41:54 PM]
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The Itanium architecture is a native 64-bit architecture, it's not RISC or CISC, Intel call it EPIC; which is similar to VLIW.
Itanium is somewhat based on HP's PA-RISC. Intel and HP have cooperated on designing the Itanium architecture. The engineers that worked at HP have moved to Intel so it's pretty much a Intel Only project now. HP is the largest seller of Itanium based machines.
The architecture relies on good compilers, because the instructions are grouped so that they can be executed at the same time in parallel more effeciently than x86 CPU's out-of-order execution.
Itanium is good for crunching numbers and do scientific work. They are mainly used in high-end servers and super computers that rely heavily on floating point operations which is used in simulations.
Itanium was able to execute x86 code with a on-die emulator until rather recently, where Intel removed that part to save die space. x86 emulation is now done by user-mode software from within an operating system, such as Windows Server 2003 for Itanium 64. The emulation is quite slow, because you don't buy Itaniums to run x86 code.
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Posted by: mooo

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Date: 10/06/07 12:24:22 PM]
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I think Intel should stop the Itanium project and move on. Intel should invest their resources for designing dedicated GPU that has the ability to calculate other data besides graphics. Both nVidia and AMD/ATI GPU has like super computer speeds which can help in engineering or other scientific applications. nVidia's GeForce8 8800GTX or even better nVidia Telsa has a few hundred gigaflops which is a lot faster than the Itanium processor.
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Posted by: linuxnerd

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Date: 10/08/07 03:28:02 PM]
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