From: tmoran@acm.org
Subject: efficient vector/matrix operations in Fortran, was Re: ... in Ada
Date: Tue, 14 Aug 2001 07:32:01 GMT
Date: 2001-08-14T07:32:01+00:00 [thread overview]
Message-ID: <Rt4e7.272$Wm3.279790@news1.rdc1.sfba.home.com> (raw)
In-Reply-To: bebbba07.0108132056.7bcc7c95@posting.google.com
>but not have the operators one really needs for efficient code?
The existence of Fortran, which has long been used successfully
for highly efficient vector/matrix code, demonstrates that += is
not required.
One possible reason is that significant matrix/vector programs
don't normally spend a lot of their time doing a += b type O(n**2)
operations, but rather spend their time doing O(n**3) operations.
+= would be of minor benefit in that case.
---------------------------------
"Premature optimization is the root of all evil" Knuth (?)
next prev parent reply other threads:[~2001-08-14 7:32 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-07 1:13 efficient vector/matrix operations in Ada Russ
2001-08-07 2:18 ` Dale Stanbrough
2001-08-07 2:21 ` tmoran
2001-08-07 3:04 ` Russ P.
2001-08-10 16:54 ` B.Gaffney
2001-08-13 7:50 ` Dmitry Kazakov
2001-08-13 19:45 ` Russ
2001-08-13 20:23 ` Larry Hazel
2001-08-13 21:26 ` Ted Dennison
2001-08-14 4:46 ` Russ
2001-08-14 5:28 ` David Starner
2001-08-14 8:17 ` Alexander Boucke
2001-08-14 8:56 ` Lutz Donnerhacke
2001-08-14 10:54 ` Jacob Sparre Andersen
2001-08-13 21:30 ` Ted Dennison
2001-08-14 4:56 ` Russ
2001-08-14 7:32 ` tmoran [this message]
2001-08-14 14:05 ` Ted Dennison
-- strict thread matches above, loose matches on Subject: below --
2001-08-14 10:11 efficient vector/matrix operations in Fortran, was Re: ... " Gautier Write-only-address
2001-08-14 10:37 ` Lutz Donnerhacke
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