IBM Mainframe Discussion List <[email protected]> wrote on 12/05/2007 09:56:36 AM:
> even before 811 documents were published we had put together a project > to turn out a 16-way smp processor on a very aggresive delivery > schedule. it was going great guns until it came to the attention of the > head of pok that it would possibly be decades before mvs ever had 16-way > smp support (some people were then invited to never show up at the pok > site again). misc. past posts mentioning smp support (and/or > compare-and-swap instruction) But actually it did not take decades, as the original release of MVS/XA in 1982 functionally supported 16-way SMP. Of course there were no such processors at the time (nothing greater than 2-way until the 4-way 3084), but it did run for testing purposes using 16 virtual CPUs on a modified version of VM. Of course, as larger processors were actually built, additional was done (and continues to be done) to address performance/scaling issues. Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY ---------------------------------------------------------------------- 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
