Uh, isn't that true up to about 1024 bytes (MVCs stacked)? And
then after the MVCL seems to be faster.
I think I was at some disclosure meeting or SHARE when that was
said prior to 2010 (can't remember the exact year).
I Remember that the MVCL is interruptible at end of a unit of
operation.
This may have changed since the z/13s.
Steve Thompson
On 10/31/2024 4:18 PM, Charles Mills wrote:
@Kirk: +1
@Shmuel: you know that an MVC loop is dramatically faster than MVCL?
Surprising but true.
CM
On Wed, 30 Oct 2024 22:40:52 +0000, Seymour J Metz <sme...@gmu.edu> wrote:
I'm leaning towards SRST/MVCL.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
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It appears to me that your requirement matches the C function below. (?)
I would probably just use C/C++, but you can see what the IBM C/C++ optimizing
compiler generated. It seems unlikely to me that there is a significantly
better way. You might ask on mvs-asm370.
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