Hamstrung, maybe. But never kneecapped. Lennie -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Rick Troth Sent: 05 September 2024 14:03 To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Happy 20th Birthday to zAAP
zAAP was pitched as (and used for) offloading Java from the primary engines. Neat idea! It was several weeks, perhaps a few months, before I realized that the zAAP was *not* a Java processor. Since it's all about microcode, I figgered IBM had built a hardware JVM, a byte-code interpreter. Wow! Sweet!! But no, just a ham-strung GP engine. I was crestfallen. We'd had IFL for four years already. (And I don't remember how long for CF.) Yep, fast development cycle for zAAP, but there was precedent for capability limits. It's a slick trick and unique to Z class processors. So ... it's really all about marketing and economics, little to do with the actual tech. And it led to opportunities for third parties to fudge things. (Which in turn led to the law suits.) I understand the economics, but understanding and agreeing are not even on the same axis. -- R; <>< On 9/1/24 10:18 PM, Timothy Sipples wrote: > As previously reported back in 2004, the first customer production use of > zAAP (the System z Application Assist Processor) went live on September 1, > 2004. Which was impressively speedy because it occurred more than 3 weeks > before the earliest release of z/OS to support zAAP (z/OS Version 1.6) became > Generally Available — and barely 2 months after zAAP (the hardware feature) > was introduced. IBM discontinued zAAPs several years ago because their > functions were fully incorporated into zIIPs. > > Happy 20th Birthday, zAAP! > > ————— > Timothy Sipples > Senior Architect > Digital Assets, Industry Solutions, and Cybersecurity IBM Z/LinuxONE, > Asia-Pacific 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 ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
