Radoslaw, I confess I don't see the connection between what Bruce said about the old versus new superdomes and your comment about Itanium and AMD. I can believe (with a grain of salt) the idea that the new superdomes are 4+ times faster than the originals and it has nothing to do with AMD. The original superdome was running an HP chip - the PA-RISC 8600 running at 552 MHz (HP published specs). I can vouch for that as we still have a couple of the original 552 MHz cell boards in our superdome. Current superdomes are running Itanium2 chips at 1.6 GHz. They've also significantly increased the memory and bus speeds and made other changes over the past 6-7 years.
Rex -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of R.S. Sent: Monday, July 16, 2007 3:35 AM To: [email protected] Subject: Re: PSI MIPS (was: Links to decent 'why the mainframe thrives' article) Bruce Hewson wrote: > Interesting, > > Them guys gave a presentation over here some time ago. > The numbers they "quoted" for a HP Superdome was 80 MIPS per engine, > with up to 64 engines. > > Are they now stating that using Itaniums can generate 350 MIPS per > engine, that means that upgrading from the original HP Superdome, to > an Itanium based system, is a 400% improvement. > > (gossip about unqualifiable numbers :-D ) It means Itanium is 4.3 times faster than AMD. I doubt it. BTW: IMHO comparison of CPUs is senseless when we talk about *computer speed*. What about I/O ? I saw Hercules on PC, almost 40MIPS, but TSO logon time was over 5 minutes. Every I/O operation was slooow. IMHO the strengths of mainframe are: a) I/O b) OS -- Radoslaw Skorupka Lodz, Poland ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
