Fastest Intel Processors
Richard Walsh
rbw at networkcs.com
Mon Jan 14 08:18:11 PST 2002
astroguy wrote:
>I really think this Ghz. gbesh oobly-gook is way over rated. I think, if you
>look more closley at the problem, the key to superior proformance is in the
>found in the actual construction or architecture of the processor. The
>Itanium, for example only runs at 733 Mghz but it has (on die) 2meg of
>cashe on the L-2... The Alpha, in its previous incarnation ran at only 233
>but did 64 bit processing... Quite amazing actually. A friend wrote me
All singular measures of performance are over rated (does this need to be
explicitly stated). Benchmarking your codes with a good compiler on the systems
being considered is the optimal approach, but is often out of reach. SPEC2000FP
(perhaps combined with STREAM) is a nice substitute. Here are the top ten micro-
processors on SPEC2000FP as of a few weeks ago (32 and 64 bit). Notice the weak
correlation with clock. Local memory (cache) structure, size, and latency matter,
superscalability of the core matters (multiple funits), instruction type matters,
(vector and pseudo-vector SSE), and processor-mother board bandwidth matters.
Note the P4 2 GHz outperforms the Itanium. Touting the Alpha could be a mistake.
Will we ever see the 21364 in a product? I am still waiting. IBM leaped to the
top of the list with its 1.3 GHz dual-core Power4 in October (a cool chip). Not
sure of the relavence of RedHat on an aging Alpha 21264. The Sparc III number
seems to be due to the anomolous high performance of the processor on a single
case in the 12(?) SPEC2000FP benchmarks pushing the average way up. Where is
SGI in this race ... mmmm?
System Processor Clock (MHz) SPEC Peak/Base
------ --------- ----- --------------
IBM 690 Power4 1300 1169/1098
Alpha ES45 21264C 1000 960/776
Sun 2050 UltraIII 1050 827/701
Alpha ES40 21264B 833 777/621
Alpha GS80 21264C 1001 756/585
Alpha GS160 21264C 1001 756/585
Dell 530 Pentium 4 2000 734/716
Dell 340 Pentium 4 2000 734/716
Intel 850 Pentium 4 2000 714/704
HP RX461 Itanium 800 701/701
------- --------- ---- --------------
AMD 1900 Pentium 4 1600 634/588
SGI 3200 R14 500 463/436
------ --------- ----- --------------
Pentium 4 using SSE2 (need the right compiler), with its fast clock (delivered
by small segments in the FPU pipleline), and nice bandwidth make it an excellent
performer for the price. For those with no budget constraints go for the IBM. Is
it only available on IBM custom MCMs or are there alternatives?
A great horse race really ... can you get odds in Las Vegas ... what microprocessor
currency will be the most valuable in six months. Any one selling microprocessor
futures, options, exotics ... En-ripp-off was contemplating it, but they choked
on there own hype ...
Bye-4-now!
rbw
#---------------------------------------------------
#
# Richard Walsh
# Project Manager, Cluster Computing, Computational
# Chemistry and Finance
# netASPx, Inc.
# 1200 Washington Ave. So.
# Minneapolis, MN 55415
# VOX: 612-337-3467
# FAX: 612-337-3400
# EMAIL: rbw at networkcs.com, richard.walsh at netaspx.com
#
#---------------------------------------------------
# "What you can do, or dream you can, begin it;
# Boldness has genius, power, and magic in it."
# -Goethe
#---------------------------------------------------
# "Without mystery, there can be no authority."
# -Charles DeGaulle
#---------------------------------------------------
# "Why waste time learning when ignornace is
# instantaneous?" -Thomas Hobbes
#---------------------------------------------------
# "In the chaos of a river thrashing, all that water
# still has to stand in line." -Dave Dobbyn
#---------------------------------------------------
~
More information about the Beowulf
mailing list