09-27-2007 04:40 AM
We're on the planning stages for a possible migration to Integrity (Montecito/Dual-Core) Systems. We've currently 1 SuperDome and 1 RP8420 with a total of 96 1000Mhz PA8800 processors - and we want to make sure we are head on correct with an Integrity replacement.
The load is mainly Oracle, Cobol & C/C++/JAVA apps with heavy CPU-intensive logic checks plus some graphics (PDF/PS, etc processing)...
09-27-2007 04:58 AM
Moving from a bunch of rp7410's to 2 rx8640's....
Basically, I think it's like 2 to 1....
First and foremost - buy some cpu's in ICAP - that way you can spin them up if you need them.
For us, the biggest savings will be on Oracle licenses as well as some OE's.
09-27-2007 06:21 AM
I hope you get answers, as I'll be in the same boat next year...
09-27-2007 07:35 AM
If tpc.org does not have it then your HP vendor should be able to slip you some stats.
09-27-2007 01:54 PM
09-27-2007 01:58 PM
10-01-2007 03:08 AM
Here's some info I can share with you from our account rep as we are going through the same process - albeit from 7410's to 8640's.
What are SAPs?
based on the sizing tables it's in the range of about 2.50.
The value however depends some on caching, and also the total number of CPUs in the server, etc, etc.
(I based this on a comparison of SAPs on an rp7410-8 with PA 8700 875 MHz single core chips vs an rx8640 1.6 GHz Itaniumn II dual cores with 8M and also 24M caching.)
Here's the raw data:
rp7410 PA8700 875 MHz 1 CPU = 492 SAPs, 8 CPUs = 3606 SAPs
rx 8640 Itanium II 1.6 GHz 18 M cache 4 cores = 5040 SAPs , 32 cores = 33,940 SAPs
rx 8640 Itanium II 1.6 GHz 24 M cache 4 cores = 5320 SAPs, 32 cores = 35,800 SAPs
So bascially lowest end rx value: 33,940 / 32 = 1060 SAPs per core
highest end rx value: 5320 / 4 = 1330 SAPs per core
Lowest end rp value: 3606/8 =451
Highest end rp value: 492/1 = 492
So ...apples to apples....
Lowest to Lowest: 1060/451 = 2.35
Highest to Highest: 1330/492 = 2.70
Mid range answer about 2.50