By: someone (someone.delete@this.somewhere.com), November 22, 2010 9:07 am
Room: Moderated Discussions
Richard Cownie (tich@pobox.com) on 11/22/10 wrote:
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>Anyhow, they've worked on Itanium for 15+ years and it
Let me correct that for you.
"They" have created just two microarchitectures for IA64
over the last "15+ years", both designed:
1) in the 1990s
2) for 180 nm Al interconnect CMOS
3) before any IA64 systems were deployed into customer
sites and actual workload trace data collected
>has never looked good on performance/watt.
Despite issue 3 McKinley did quite well with perf/W vs its
contemporary conpetitors similarly constrained by 1 and 2.
Poulson will blow past issues 1, 2, and 3 with a vengence.
It will have much higher performance than Tukwila in the
same socket power. Will its perf/W be better, comparable,
or worse than Westmere-EX or Power7+? Only time will tell.
---------------------------
>Anyhow, they've worked on Itanium for 15+ years and it
Let me correct that for you.
"They" have created just two microarchitectures for IA64
over the last "15+ years", both designed:
1) in the 1990s
2) for 180 nm Al interconnect CMOS
3) before any IA64 systems were deployed into customer
sites and actual workload trace data collected
>has never looked good on performance/watt.
Despite issue 3 McKinley did quite well with perf/W vs its
contemporary conpetitors similarly constrained by 1 and 2.
Poulson will blow past issues 1, 2, and 3 with a vengence.
It will have much higher performance than Tukwila in the
same socket power. Will its perf/W be better, comparable,
or worse than Westmere-EX or Power7+? Only time will tell.
