Thursday, January 31st 2019

Intel Officially Sinks the Itanic, Future of IA-64 Architecture Uncertain

Intel has unceremoniously, through a product change notification (PCN), discontinued the Itanium family of microprocessors. The Itanium 9700 "Kittson," which was released in 2017, is the final generation of Itanium, and its sales to new customers have stopped according to the PCN. The series has been marked "end of life" (EOL). Existing customers of Itanium who already have their IT infrastructure built around Itanium 9700 series, have an opportunity to determine their remaining demand of these processors, and place their "Last Product Discontinuance" order with Intel. The final LPD shipments would go out mid-2021.

With this move, Intel has cast uncertainty over the future of the IA-64 microarchitecture. IA-64 was originally conceived by Intel to replace 32-bit x86 at the turn of the century, as an industry-standard 64-bit processor architecture. AMD laid the foundation for its rival standard AMD64, which could go on to become x86-64. AMD64 won the battle for popularity over IA-64, as it maintained complete backwards-compatibility with x86, and could seamlessly run 32-bit software, saving enterprises and clients billions in transition costs. Intel cross-licensed it as EM64T (extended memory 64-bit technology), before standardizing the name x86-64. Itanium dragged on for close to two decades serving certain enterprise and HPC customers.
Source: Intel (PDF document)
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54 Comments on Intel Officially Sinks the Itanic, Future of IA-64 Architecture Uncertain

#51
TheGuruStud
FordGT90ConceptOnly benchmark I could find:

Xeon 20.1474609375
Itanium 8.8193359375
Opteron 11.516927083333333333333333333333
Itanium 13.1015625

That's per core. Itanium 2 is nothing to scoff at.

8-Core Itanium Poulson: 3.1 billion transistors
8-Core Xeon Nehalem-EX: 2.3 billion transistors

Interesting article about Poulson (newest Itanium architecture): www.realworldtech.com/poulson/

Itanium had 20% of the TOP 500 super computers back in 2004. IA-64 gained traction because x86 lacked memory addressing space. x86-64 reversed that pattern because of backwards compatibility/not having to find Itanium software developers.

12 instructions per clock, 8 cores, and 16 threads at the end of 2012. It was a monster.
Pretty sad in real apps from what I recall. Also, rendered obsolete by intel themselves with nehalem the next year.
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#52
FordGT90Concept
"I go fast!1!11!1!"
HP paid to keep it going for at least 18 years. It had its uses. Latest Itanium 2 processors actually came out in 2017.
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#53
efikkan
Actual development of Itanium was discontinued shortly after the launch of Itanium 2. Intel did have long-term commitments though, so they kept tweaking it a bit for some time.
Posted on Reply
#54
FordGT90Concept
"I go fast!1!11!1!"
That would be wrong (see link above). Itanium 2 debuted in 2002 on 180nm. Poulson (released in 2012) was a huge makeover for the architecture on the 32nm node. Kittson (released in 2017) was supposed to be a 22nm node shrink of Poulson but, for reasons unknown, 22nm was abandoned and Kittson was produced on a matured 32nm node.
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