A while back a customer of PathScale issued a press release about how
they were running Windows on their supercomputer, with InfiniPath
interconnect. We were kinda surprised, since we didn't have Windows
drivers.
So I was curious about the Dawning 5000A... the previous supercomputers
in this serie
Nathan Moore wrote:
Any suggestions? I figured that this would be a simple example to
parallelize. Is there a better example for OpenMP parallelization?
Also, is there something obvious I'm missing in the example below?
A few thoughts ...
Initialize your data in parallel as well. No rea
Hi All,
I'm getting to the end of a semester of computational physics at my
institution, and thought it would be fin to close the semester with a
discussion of parallel programming. Initially, I was simply planning to
discuss MPI, but while reading through the gfortran man page I realized that
gc
Greg Lindahl wrote:
> I had been planning for a long time to upgrade a bunch of my AMD
> dual-core systems to quad-cores when quad-cores were cheap enough --
> same socket, no problem, right?
>
> Well, the motherboard that I have apparently doesn't supply quite
> enough power to the memory
Same d
I had been planning for a long time to upgrade a bunch of my AMD
dual-core systems to quad-cores when quad-cores were cheap enough --
same socket, no problem, right?
Well, the motherboard that I have apparently doesn't supply quite
enough power to the memory when it's being driven by a Shanghai
qu
Mark Hahn wrote:
[shameless plug]
A project I have spent some time with is showing 117x on a 3-GPU
machine over a single core of a host machine (3.0 GHz Opteron ).
The code is mpihmmer, and the GPU version of it. See
http://www.mpihmmer.org for more details. Ping me offline if you need
Mark Hahn wrote:
Ellis, I can't say re. the Firestream cards, but for Nvidia the answer
is a
resounding yes.
AMD had some PR recently (check the reg and inq) about supporting their
stream stuff across the whole product line, including chipset-integrated
gpus. that seems intelligent, given th
On Nov 20, 2008, at 5:39 PM, Jan Heichler wrote:
Hallo Mark,
Donnerstag, 20. November 2008, meintest Du:
>> [shameless plug]
>> A project I have spent some time with is showing 117x on a 3-GPU
machine over
>> a single core of a host machine (3.0 GHz Opteron ). The
code is
>> what I understand GPUs are useful only with certain classes of numerical
>> problems and discretization schemes, and of course the code must be
> I think it's fair to say that GPUs are good for graphics-like loads,
> or more generally: fairly small data, accessed data-parallel or with
> very
I disagree with Mark on investing into GP-GPUs. I think it's a good thing to do
for the simple reason of understanding the programming model. I've been
watching people work with GP-GPUs for several years and there is always this
big hump that they have to get over - understanding how to take the
Mark Hahn wrote:
OTOH, GP-GPU has obviously drained much of the interest away from eg
FPGA computation. I don't know whether there is still enough interest
in vector computers to drain anything...
Joe Landman replied:
Hmmm There is a (micro)vector machine in your CPU anyway.
What is mis
2008/11/20 Jan Heichler <[EMAIL PROTECTED]>
>
>
>
> What does it help that 3 GPUs are 1000x faster than a Asus Eee PC?
>
> I read on HPCwire that SGI are demoing a concept machine made of stuffing
1000's of Atom processors in a rack.
Seems to me. to be honest. to be bucking the current trends. Has
Hallo Mark,
Donnerstag, 20. November 2008, meintest Du:
>> [shameless plug]
>> A project I have spent some time with is showing 117x on a 3-GPU machine
>> over
>> a single core of a host machine (3.0 GHz Opteron ). The code is
>> mpihmmer, and the GPU version of it. See http://www.mpihm
>
> I'm happy for you, but to me, you're stacking the deck by comparing to a
> quite old CPU. you could break out the prices directly, but comparing 3x
> GPU (modern? sounds like pci-express at least)
Mark, all CUDA capable cards are PCI-Express. (off the top of my head).
> to a current entr
[shameless plug]
A project I have spent some time with is showing 117x on a 3-GPU machine over
a single core of a host machine (3.0 GHz Opteron ). The code is
mpihmmer, and the GPU version of it. See http://www.mpihmmer.org for more
details. Ping me offline if you need more info.
[/sh
Quick intervention from SC08 show
Mark Hahn wrote:
As we know by now GPUs can run some problems many times faster than CPUs
it's good to cultivate some skepticism. the paper that quotes 40x
does so with a somewhat tilted comparison. (I consider this comparison
fair: a host with 2x 3.2 GHz QC
As we know by now GPUs can run some problems many times faster than CPUs
it's good to cultivate some skepticism. the paper that quotes 40x
does so with a somewhat tilted comparison. (I consider this comparison
fair: a host with 2x 3.2 GHz QC Core2 vs 1 current high-end CPU card.
former deliver
Ellis, I can't say re. the Firestream cards, but for Nvidia the answer is a
resounding yes.
AMD had some PR recently (check the reg and inq) about supporting their
stream stuff across the whole product line, including chipset-integrated
gpus. that seems intelligent, given that lines between CP
Regarding the hyperbolic (etc) classification of PDEs: you may want
qualitative theory instead of (or in additon to) number crunching. I'd
suggest stopping over at UC Davis, where I count at least half a dozen PDE
folks in the applied math program (more if you count the turbulence and
fluid dynami
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