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Message from discussion Global array operations: a performance hit?
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deltaquattro  
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 More options Jun 18 2008, 8:18 am
Newsgroups: comp.lang.fortran
From: deltaquattro <deltaquat...@gmail.com>
Date: Wed, 18 Jun 2008 05:18:15 -0700 (PDT)
Local: Wed, Jun 18 2008 8:18 am
Subject: Re: Global array operations: a performance hit?
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On 18 Giu, 11:41, Dennis Wassel <dennis.was...@googlemail.com> wrote:

> On 18 Jun., 10:20, deltaquattro <deltaquat...@gmail.com> wrote:

> > > 3) How did you measure execution time?
> > > I find that accuarate timing on a computer is a nontrivial task. The
> > > 'time' command on my machine shows up to 200% variance. I can only
> > > assume you used some clever and appropriately precise way of
> > > measuring.

> > When Richard told you exactly the same, you didn't ask which "clever
> > and appropriately precise way of measuring" he used, but you quickly
> > thanked him for "enlightening us". I can only assume that for you
> > using "some clever and appropriate precise way of measuring" means
> > asking for Richard's agreement on the subject.

> Hey, easy on the noobs!
> That's outright flaming, when all I was trying to do is to help!
> Had you earlier made any suggestion that you know yourself around
> Fortran coding very well, thank you, I might as well have left
> answering to the experts.
> Instead you *now* post something I can summarise as "STFU n00b", which
> tends to scare away new members. Not gonna cow me down, but others
> would have left for good by now.

> But then again, who am I telling? Of course you know all that!

I'm not flaming and I don't think you are a novice: on the contrary,
since you talked about the possibility of you being involved in gcc
development, I think you know Fortran way better than me.
Anyway, I would never say "STFU n00b" to anyone under any
circumstances, if I understand what that means (I'm not sure since
because English is not my mother tongue, and I don't live in an
English speaking country).
The point is that when I posted a genuine doubt about speed of whole
array operations, you replied asking me if I have been clever enough
in doing my timings. When Richard confirmed my doubts, you were ready
to accept his words. To me, it seemed as if you were dismissing my
doubts just because I'm not an expert as Richard, robin, glenn, Paul,
Steve and all the many other guys on this newsgroup.
If this isn't so, then I apologize to you and to the rest of the
newsgroup: I have misinterpreted your words, maybe also because of my
imperfect knowledge of English.

Best Regards,

deltaquattro


 
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