VAX vs Alpha compiles

10 Dec 98 09:50:36 -0500

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Mike, 

Coming from COGNOS this would appear to be the recommendation or a least a 
money saver, eh?  I was once told by a Digital guy (so called expert) that
the 
best bet was to recompile on the Alpha because of the architectural 
differences of the actual machines (VAX vs. ALPHA) themselves.  Interesting
to 
see that so many sites have not had any problems whatsoever! 

______________________ 
Mark Stewart  
Consultants Club Corp.  
Windsor, Ontario  
Canada  

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Date: 10 Dec 98 09:23:22
From:"Armstrong, Mike" <Mike.Armstrong@Cognos.COM>
To:"'STEWARTM@dteenergy.com'" <STEWARTM>, powerh-l
Subject:RE: VAX vs Alpha compiles
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I think Blue's original question has been answered many times over so I
won't repeat the that. However, I do have to comment on the first paragraph
of Mark's message below. 
Compiled PH code is Compiled PH code as long as the version of PH on the VAX
box and the version of PH on the AXP box is the same. Don't believe me? Try
doing a diff/para on the same code compiled on different boxes. There might
be a few small differences but what is stored in the Compile PH object
(.QKC, .QTC, .QZC) is not O/S specific.
All the O/S specific stuff is in the .EXE's (QUICKA710F.EXE, QUICK710F.EXE)
That's the neat thing about OpenVMS and PowerHouse! As you can see from the
others that responded. It's used a lot to lower development cost by running
development on small VAX boxes and Production on honking big AXP boxes. Hey,
they can even be in the same cluster making it that much easier!
Just two cents worth!
Cheers!
Mike
-----Original Message-----
From: STEWARTM@dteenergy.com [mailto:STEWARTM@dteenergy.com]
Sent: Wednesday, December 09, 1998 5:09 PM
To: powerh-l@lists.swau.edu
Subject: Re: VAX vs Alpha compiles

I wouldn't do this if you plan on moving your compiled version to production

some day on a Alpha that have been compiled on a VAX.  The operating system
is 
the same but don't let that fool ya because the architecture of each machine

is quite different.  There could be any number of internal differences that 
you would not know about.  If you are just wondering whether it works your 
answer is yes if your PowerHouse versions are the same. 

As for the OpenVMS version I'd advise you compile it against a Y2K version.

But again Bob Deskin refered to internal (behind the scenes) differences a 
hundred times on this list.  Why would you want to compile on one version
and 
run it on another. 

______________________ 
Mark Stewart 
Consultants Club Corp. 
Windsor, Ontario 
Canada 

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