John Eells wrote:
There is indeed a machine-level curve that reduces the capacity of the
overall machine when an engine is added (or activated) to a CEC.
Oops; I should have written:
There is indeed a machine-level curve that reduces the capacity of
*other processors within* the overall
I think IFLs run about 10% of a full speed CP processor. So it
doesn't take too much to make them cost effective.
On Wed, Oct 30, 2013 at 10:02 PM, adarsh khanna adarshkha...@yahoo.com wrote:
Thanks Timothy.I get it.
IFL costing across models is more to do with marketing and product
On 28 October 2013 22:24, adarsh khanna adarshkha...@yahoo.com wrote:
Does the cost of adding an IFL different on different machines e.g. 2817
compared to 2098. If yes why? as it is just characterization of a core.
You can just as well say that the difference between a CP and an IFL
is just
On Thu, 2013-10-31 at 11:38 -0400, Tony Harminc wrote:
He said I think IFLs run about 10% of a full speed CP processor. So
it doesn't take too much to make them cost effective.
I think he meant 10% of the price, not the speed.
There's a maintenance charge for that IFL too.
--
David
On 10/31/2013 7:42 AM, Mike Schwab wrote:
I think IFLs run about 10% of a full speed CP processor. So it
doesn't take too much to make them cost effective.
Specialty engines always run at full speed. THAT's what makes them cost
effective...
--
Edward E Jaffe
Phoenix Software International,
On 10/31/2013 10:31 PM, Ed Jaffe wrote:
On 10/31/2013 7:42 AM, Mike Schwab wrote:
I think IFLs run about 10% of a full speed CP processor. So it
doesn't take too much to make them cost effective.
Specialty engines always run at full speed. THAT's what makes them
cost effective...
Oops.
Thanks Timothy.I get it.
IFL costing across models is more to do with marketing and product positioning.
On Tuesday, 29 October 2013 2:45 PM, Timothy Sipples sipp...@sg.ibm.com wrote:
Bob Shannon writes:
Each book has to have at least one configured PU, so
the minimum configured PUs for the
Bob Shannon writes:
Each book has to have at least one configured PU, so
the minimum configured PUs for the CEC would be four.
Is that true uniquely for the 2827-HA1? It's not true for, say, the
2827-H43 as far as I know. Single engine 2827-H43 machines are reasonably
common. Could you be
A related question:
Does the cost of adding an IFL different on different machines e.g. 2817
compared to 2098. If yes why? as it is just characterization of a core.
On Monday, 28 October 2013 8:03 AM, Timothy Sipples sipp...@sg.ibm.com wrote:
Radoslaw Skorupka writes:
You cannot pay for
On 10/25/2013 at 10:25 PM, adarsh khanna adarshkha...@yahoo.com wrote:
-snip0
1) Is the disabling of instructions done via micro or millicode?
Most likely millicode, but it could be microcode.
2) How does diabling few instructions restrict z/OS from running on IFL?
IBM makes sure that z/OS
Radoslaw Skorupka writes:
You cannot pay for more spares
You can, though not at core-level granularity. That's because all
uncharacterized cores are spares. Among current mainframe models the
zEnterprise zEC12 always leaves the factory with a minimum of 2 spare
cores, but you can have up to
W dniu 2013-10-26 04:25, adarsh khanna pisze:
Hi,
I am starting to learn about Linux on System z and was going through redbooks
and other material available on IBM website as well as on google to get details
on how is a mainframe core characterised as IFL.
For IFL, I came across This is a
I can't tell you the specifics about IFL's. I don't think it really matters but
I could be wrong. Z machines have multiple CPU's that are the same. You can
pay for the CPU's you want to use in the box. IBM disables those that you don't
pay for. As an incentive to buy z architecture, IBM will
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