[Beowulf] Re: "hobbyists"
larry.stewart at sicortex.com
Fri Jun 20 14:03:25 EDT 2008
On Jun 20, 2008, at 11:12 AM, Mike Davis wrote:
> Karen Shaeffer wrote:
>> On Fri, Jun 20, 2008 at 02:41:42AM -0400, Robert G. Brown wrote:
>>> c) some mix of mentoring by a guru and working your ass off. A
>>> and motivated person can teach themselves C, but I'll be damned if I
>>> think that they can teach themselves to code C >>well<< in less than
>>> years of painful mistake-driven lessons unless they have a guru or
>>> other way of learning some of the simple wisdom that makes it
>>> to turn out decent, readable, code. And even with a guru and
>>> quite hard, it still takes years, just fewer years.
>> Today it is very straight forward. The 2.6.x linux kernel is an
>> body of superb C programming code. All you need is motivation and a
>> connection. And the linux kernel email development lists have
>> hundreds of
>> programming guru's pontificating and standing on soap boxes daily.
> Linus made this statement or a very similar one at a Linux Expo at
> Duke back in 1998. In his version, he included the advice that if
> you wanted to write good code, you should start by reading good
> code. Then he went on to recommend the linux kernel.
> Reading code is IMHO one of the most important parts of learning to
> write good code. It doesn't matter if the target language is f77, C,
> or even (gulp) java. Reading well written code will help one to
> understand how to construct it.
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There are many positive things to say about the Linux kernel, but
"good code" is not one of them.
Well that is too broad an indictment - There is good code in there,
but the level varies widely.
Have you <<looked>> at the TTY drivers? Have you counted the number of
"<< 9" s in the block code?
Tried to figure out which includes are actually active? Tried to
figure out which of the 17 ways to do
something is the "approved" one?
I have one of the copies of the "Lions" book - the annoted sources for
V6. That is good code. Written by
one or a very few exceptional programmers, not an agglomeration of a
And don't get me started about the ways in which Linux is ill suited
to HPC. . . . well actually that
would be a pretty good debate for this forum.
The kernel is very reliable compared to pretty much anything, and that
is worth a lot, but it isn't the place
to learn programming style.
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