The following message is a courtesy copy of an article that has been posted to bit.listserv.ibm-main as well.
[EMAIL PROTECTED] (Pommier, Rex R.) writes: > I concur also. I wonder what year my company was included in the "250 > per 2 years" statistic. We brought in a brand-spanking-new HP > superdome back in 2001 as our mainframe (a 7060H50!!) killer. As per > my CTO back then "don't do any maintenance to the mainframe because it > will be gone in 3 years". You can guess the rest. Our z9-BC is > running happily; the superdome is in the process of being replaced by > newer, smaller (physically) HP-UX boxes, and the "get off the > mainframe" project has been shelved. sumperdome involved some people that had been involved in ibm risc group. it was somewhat positioned as more cost-effective (convex) examplar. SCI was commodity (NUMA) shared memory scaleup technology ... somewhat out of SLAC. DG & Sequent had done NUMA 256 processor machines (64-port SCI, with 64 boards & four 486 processors per board). IBM later bought Sequent. Convex had done NUMA 128 processor machines (64-port SCI, with 64 boards & two HP RISC processors per board). HP bought Convex ... and superdome was somewhat positioned as a more cost-effective Examplar. SGI also did SCI NUMA machines with MIPS RISC processors. Part of the issue has been the programming complexity to take advantage of NUMA architectures ... not unlike all the current stuff about how to migrate traditional desktop software to take advantage of multi-core processors. There are also still a large number of issues with regard to maturity level of all the u*ix systems for business critical dataprocessing vis-a-vis legacy commercial systems. This is less of an issue when there is a large DBMS or other large application subsystem (possibly in a single, dedicated environment) that masks underlying operating system characteristics. -- 40+yrs virtualization experience (since Jan68), online at home since Mar70 ---------------------------------------------------------------------- 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
