Think of a zAAP as an attached processor for the JVM working on your system. AFAIK they are only available on the z-890 and z-990 processors and you have to have z/OS 1.6 or above. The JVM can determine if you have a zAAP and use it if it is available. Because the zAAP is not a CP your regular OS can't use it and your software cost do not rise with the added MIPS. The third party software costs are the greatest benefit.
I hope IBM is working on the Websphere JVM, running under Linux on zSeries, to take advantage of the zAAP also. Larry Davis -----Original Message----- From: James Tison [mailto:[EMAIL PROTECTED] Sent: Friday, May 14, 2004 10:28 AM To: [EMAIL PROTECTED] Subject: Re: Websphere on Linux As soon as I'd heard about it, I went to go research it as best I could. Personally, I have to admit I was a bit disappointed. I was hoping for better. AFAIK, this is all public domain knowledge; but I'm going to stay away from details that I fear might not be -- I like my job. Usual disclaimer: I don't officially speak for IBM here -- I am not connected with Java, z/OS, or zSeries hardware development as a matter of my job. The zAAP is just a normal zSeries CPU dedicated & managed by the OS (z/OS V1R6+ only, as the poster below points out) to Java tasks. It provides no known performance benefit on a side-by-side address space comparison relative to a normal zSeries CPU. The zAAP does NOT implement any new hardware/mcode instructions to support JVM execution. As always, whether or not the zAAP will benefit you will depend on your workload, and this is where I have to stop. Contact your IBM account representative if you'd like to see the tech sales support materials; or if you have any speculative-level questions you'd like answered. Regards, --Jim-- James S. Tison Senior Software Engineer TPF Laboratory / Architecture IBM Corporation "If dogs don't go to heaven, then, when I die, I want to go where they do." -- Will Rogers Linux on 390 Port <[EMAIL PROTECTED]> wrote on 05/14/2004 10:10:06: > > Can somebody theow some light on this zAAP processor ? > > > > Franz Josef Pohlen <[EMAIL PROTECTED]> > Sent by: Linux on 390 Port <[EMAIL PROTECTED]> > 05/14/04 07:37 PM > > Please respond to > Linux on 390 Port <[EMAIL PROTECTED]> > > To > > [EMAIL PROTECTED] > > cc > > Subject > > Re: Websphere on Linux > > > > > Hi, > > the zAAP processor will only work with zos 1.6 and above, - nothing > else ., > coming in september, I believe. The problem is that even IBMers ask > themselves, which customer will need this. IBM has told everyone to > consolidate his applications on zlinux using its really good internet > capabilities. They have developed dozens of connectors to the data > components on zos (DB2, CICS, IMS etc) Now they tell them to run websphere > applications on zos with zAAPs. I would prefer zlinux on IFLs using > hipersockets for communication to zos, because I think linux is the better > unix than USS on zos and will get even better in future development of hard- > and software. > > FJ > > ----- Original Message ----- > From: "McKown, John" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Friday, May 14, 2004 2:53 PM > Subject: Re: Websphere on Linux > > > > > -----Original Message----- > > > From: Phil Payne [mailto:[EMAIL PROTECTED] > > > Sent: Friday, May 14, 2004 5:15 AM > > > To: [EMAIL PROTECTED] > > > Subject: Re: Websphere on Linux > > > > > > > > > It depends now on the size of the machine and whether zAAPs would > > > be financially justifiable. > > > > > > There is no simple answer. > > > > > > > Speaking of zAAPs, does anybody know if Linux will be able to take > advantage > > of them? Or is it viewed a unnecessary by IBM? I can see where they might > be > > of use if somebody is running Linux on a standard CP instead of an > > IFL for > > some reason. But, then, it might be better to just get an IFL. > > Except that > a > > zAAP, I think, could be shared with z/OS and/or z/VM whereas an IFL cannot > > be. > > > > > > -- > > John McKown > > Senior Systems Programmer > > UICI Insurance Center > > Applications & Solutions Team > > > > This message (including any attachments) contains confidential information > > intended for a specific individual and purpose, and its' content is > > protected by law. If you are not the intended recipient, you should > delete > > this message and are hereby notified that any disclosure, copying, > > or distribution of this transmission, or taking any action based on > > it, is > > strictly prohibited. > > > > -------------------------------------------------------------------- > > -- For LINUX-390 subscribe / signoff / archive access instructions, > > send email to [EMAIL PROTECTED] with the message: INFO > > LINUX-390 or > visit > > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, send > email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > > ForwardSourceID:NT00006252 [attachment "InterScan_Disclaimer.txt" > deleted by James Tison/Poughkeepsie/IBM] ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
