m=20
[mailto:ib...@listserv.uark.edu] On Behalf Of Alan Altmark
Sent: Thursday, January 07, 2010 9:30 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Fixed length field alignment degradation
=20
On Thursday, 01/07/2010 at 02:58 EST, Brian Nielsen=20
wrote:
You might try this:
=20
http://portal.ac
serv.uark.edu] On Behalf Of Alan Altmark
Sent: Thursday, January 07, 2010 9:30 PM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: Fixed length field alignment degradation
=20
On Thursday, 01/07/2010 at 02:58 EST, Brian Nielsen=20
wrote:
You might try this:
=20
http://portal.acm.org/ft_gateway.cfm?i
ram check.
Regards,
Richard Schuh
> -Original Message-
> From: The IBM z/VM Operating System
> [mailto:ib...@listserv.uark.edu] On Behalf Of Alan Altmark
> Sent: Thursday, January 07, 2010 9:30 PM
> To: IBMVM@LISTSERV.UARK.EDU
> Subject: Re: Fixed length field alignment de
On Fri, Jan 8, 2010 at 6:29 AM, Alan Altmark wrote:
> The warning about alignment-dependent performance has been in the book
> since time immemorial and the assembler has been issuing warnings about it
> since Day 2. (I remember my great-grandfather mentioning it to his pet
> dinosaur one day...
On Thursday, 01/07/2010 at 02:58 EST, Brian Nielsen
wrote:
> You might try this:
>
> http://portal.acm.org/ft_gateway.cfm?id=29651&type=pdf
>
> The above, "Mimic: A Fast System/370 Simulator", is also cited in patent
Not everyone has access to ACM's digital library, but the only relevant
poin
You might try this:
http://portal.acm.org/ft_gateway.cfm?id=29651&type=pdf
The above, "Mimic: A Fast System/370 Simulator", is also cited in patent
application 5,751,982.
http://www.google.com/patents?
hl=en&lr=&vid=USPAT5751982&id=6jAlEBAJ&oi=f
nd&dq=related:P7ZYcQqpZikJ:s
cholar.goog
The POPS For System z contains the following note:
"
Programming Note: For fixed-field-length operations with field lengths that
are a power of 2, significant performance degradation is possible when
storage operands are not positioned at addresses that are integral multiples
of the operand length
