Jon Butler writes: >IFLs always run at full capacity based on the CEC model, e.g. zEC12 = >1511 MIPS, z196 = 1200, z114/z01 = 782.
zIIPs, zAAPs, ICFs, and SAPs are also whole engines. CPs often are whole engines but optionally can be purchased and configured in fractional engine increments -- which is fantastic, because those fractional options provide more flexibility useful for many reasons. Only CPs are "scored" according to PCI (Processor Capacity Index) metrics. I do not recommend trying to size IFLs using PCI -- or even necessarily to rely too much on PCI in general. Moreover, it's important not to confuse single engine machines and their PCIs with the capacities of incremental engines. While the SMP effects are as small as possible on a zEnterprise machine, there are some. Note that IBM has issued a Statement of Direction concerning future availability of zAAPs, presumably given that zIIPs can run everything zAAPs can. You can add more SAPs (System Assist Processors) if you wish -- that's another customer option. It's rare you would do that since the standard allotment is generous, but they are available. I do not recommend using the word "native" to distinguish between Linux running in an LPAR without z/VM and Linux running as a guest within z/VM. Linux always runs natively on zEnterprise, and zEnterprise systems always operate virtualized, even if you only have one LPAR. It's just a question of which virtualization (virtualizations?) you choose. -------------------------------------------------------------------------------------------------------- Timothy Sipples GMU VCT Architect Executive (Based in Singapore) E-Mail: sipp...@sg.ibm.com ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
