On Tue, 22 Aug 2006, Mark Hahn wrote:
it's good to minimize the friction encountered when performing some task;
it's NOT true that the only or best way to do that is by dumbing it down.
every bit of dumbing makes the system less versatile. and the dumbing is not
the goal - this is what is too
On Mon, 21 Aug 2006, Ed Hill wrote:
I want to be able to write codes that can make use of the vast existing
C and C++ libraries for, say, I/O or computational geometry or "systems"
type programming while simultaneously using existing Fortran routines
for building and integrating big systems of e
Speaker asks all the people in the audience: "Those of you with manual
transmissions in your car, raise your hand."
3/4 of the audience raises their hand.
Speaker: "YOU, with your hands waving in the air, are NOT the people who
should be designing the user interfaces.
I find this asinine. y
On Mon, 21 Aug 2006, Joe Landman wrote:
I took a simple GSL program I used to introduce students to GSL, that
was a modified example from one of the GSL example files. Basically a
little Hooke's law bit to use as input to an LU solver. Really short
GSL program.
Joe,
Since you clearly have t
On Sun, 2006-08-20 at 23:50 -0400, Robert G. Brown wrote:
> On Mon, 21 Aug 2006, Jonathan Ennis-King wrote:
>
> > The other option is the Unix-like strategy suggested by rgb, where for
> > example the computational part is completely written in C, and then the
> > pre and post-processing which be
Robert G. Brown wrote:
>> Obviously this is a trivial example, but if you create a reasonable set
>> of API's that you can express as we have indicated, even pass function
>> prototypes in using a header file, and a little config stuff at the
>> front end to give paths to libraries, this is not
Robert G. Brown wrote:
Remember I'm just such a type as well. So are a whole lot of primary
contributers on this list. Building and USING a cluster to perform
actual work provides one with all sorts of real world experience that
goes into building your next one, or helping others to do so.
In those famous words from "Cool Hand Luke," "What we have here is a
failure to communicate." For my role in that failure I apologize.
Tony Travis wrote:
I think problems can occur when you enforce such a strict demarcation
boundary between your role and the role of the scientists you suppo
On Mon, 21 Aug 2006, Tony Travis wrote:
Not 'everyone' like me is as stupid or naive as you imply. I have the support
I don't think he was implying that, really -- not worth flaming over,
for sure. Remember that cluster computing as we currently use it was as
much as not INVENTED by people ju
Mike Davis wrote:
[...]
For the most part, I think that if a cluster is run correctly, it is an
appliance for the scientists. Their job is to produce research, mine is
to manage clusters and smp machines.
Hello, Mike.
I think problems can occur when you enforce such a strict demarcation
bou
Greg Lindahl wrote:
On Thu, Aug 10, 2006 at 10:47:00AM +1000, SIM DOG wrote:
I recently visited a large educational institution (that shall remain
nameless) that hosts an excellent, world class, science research team.
They also have a reasonably large Beowulf environment (over 100 dual nodes).
At 11:08 PM 8/20/2006, Greg Lindahl wrote:
On Thu, Aug 10, 2006 at 10:47:00AM +1000, SIM DOG wrote:
> I recently visited a large educational institution (that shall remain
> nameless) that hosts an excellent, world class, science research team.
> They also have a reasonably large Beowulf environ
CALL FOR PAPERS
Workshop on Large-Scale, Volatile Desktop Grids (PCGrid 2007)
held in conjunction with the
IEEE International Parallel & Distributed Processing Symposium (IPDPS)
March 30, 2007
Long Beach, California U.S.A.
http://pcgrid07.lri.fr
Desktop grids utilize the free resources available
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>> My specific question was whether anyone out there was running parallel
>> codes either written completely in Java, or with Java wrappering some
>> big numerical library for the hard part. Are there any additional issues
>> with parallel performance
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To give additional context, the choice of language is partly driven by
the desire to make the code open source (eventually) and usable by other
scientists (who are not exclusively programmers). This consideration
rules out the arcane or new-fangled. My
On Tue, Aug 15, 2006 at 05:02:40AM -0400, Steffen Persvold wrote:
> Not if you're using a "non-polluting" store (like movntps), but I don't know
> if compilers are smart enough (they should be?).
We generate non-polluting stores at -O3 and higher when we see a loop
blowing out the cache. I don't
On Thu, Aug 17, 2006 at 01:37:37PM +0100, Daniel Kidger wrote:
> Intel's support website has a reply from Intel saying that ITC uses Intel only
> hardware counters and so won't run on anybody elses hardware. :-(
Well, this actually happens to be true, the AMD and Intel hardware
counters are compl
On Tue, Aug 15, 2006 at 07:16:59AM -0700, Bill Broadley wrote:
> Interesting, the woodcrest latencies are much higher than I've seen
> elsewhere. It's been awhile since I looked at the lmbench source,
> I seem to recall it used to do a negative stride, but then one of the
> the architectures dete
On Thu, Aug 17, 2006 at 02:52:47PM -0700, Bill Broadley wrote:
> I'm happy to say that Pathscale, Intel, GCC-3, and GCC-4 all share
> mostly identical performance. Although, I had to be very careful with
> pathscale to avoid the benchmark routine from getting optimized away.
*snicker* Believe it
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