W dniu 30.03.2020 o 00:40, Grant Steele pisze:
Impressed with the depth on this list from the contributors. I am getting back
into the z-series software and application development after years of being in
another domain.
Here is a very broad question: when you guys/girls are moving your app
portfolio from one hardware platform to another (say, z14 to z15), to what
extend are the apps compatible with the new platform without recompilation?
There are many answers, let me also do this:
You said "Code". That could mean many different things, let's assume you
mean application code, written in COBOL or PL/I.
You also said "changing platform". Let's assume we talk about EC12 ->
z15, or z13 -> z15, or z14 -> z15, but not ES9000 to z15 or AS/400 to z15.
In that case YOU DON'T HAVE TO RECOMPILE the code. It will work.
However new compilers can give you better performance when you recompile
the code with parameter "platform=z15". Note: such code will no work on
older platform, but it will work on newer platform. The assumption is
simple: it is likely you will move from current machine to next model.
It is unlikely you will move back.
--
Radoslaw Skorupka
Lodz, Poland
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