climateprediction.net home page
Posts by Simplex0

Posts by Simplex0

1) Message boards : Number crunching : Upload Failure (Message 44121)
Posted 30 Apr 2012 by Simplex0
Post:
Just now noticed that one hadam3p***13.zip is uploading.
Way to go!
Thanks to the whole crew!


Hmm.. the server status report "Upload server uploader1.atm Not Running"
2) Message boards : Number crunching : Upload Failure (Message 44109)
Posted 28 Apr 2012 by Simplex0
Post:
Hi everyone,

We are currently suffering two server failures - both serious hard disk issues, so I am configuring another to take over their roles before I get around to sorting out those problems.

I will let you know how things proceed, but it will be at least 24 hours before we can consider ourselves back online.

Please accept my apologies.

Jonathan

CPDN Sys-Admin


Just wondering. Do you have a backup \ mirror of the uploaded data or is the data lost?
3) Message boards : Number crunching : Credit anomalies (Message 40527)
Posted 1 Sep 2010 by Simplex0
Post:
down 130000 according to Boinc Stat's
4) Message boards : Number crunching : Upload problem (Message 37264)
Posted 17 Jun 2009 by Simplex0
Post:
And now back to red. An other disk failure?
5) Message boards : Number crunching : Unable to upload 2 zip files (Message 37241)
Posted 16 Jun 2009 by Simplex0
Post:
This 2 weeks long chaos reminds me of this.

I wonder if O'rily works for a delivery company nowadays?
6) Questions and Answers : Wish list : Using GPUs for number crunching (Message 36844)
Posted 2 May 2009 by Simplex0
Post:
Hello Tomas,

If you believe every academic paper produces real-world applications, then I have a metal-ceramic, combustion engine I'd like to sell you.


Hi Belfry
Hmm... I see, so we should only believe in the guys who say it can't be done?
The information was taken from the link you provided.

Anyway it should not be that hard to repeat the experiment to see if it is true right?

It seams that the main reason is that there are very few, if any, at the different universities that are capable to make a program that runs on a ATI card. I had no idea that it was so difficult.

That's make me see game programmers in a whole new light.
7) Questions and Answers : Wish list : Using GPUs for number crunching (Message 36842)
Posted 2 May 2009 by Simplex0
Post:

Interestingly, when the first dual-core processors came out, some rumors popped up about reverse-hyperthreading--two processors working on a single thread. This article suggests we can expect Santa Claus before we see this technical feat.


Did you also read this?

"
With a queue of
1024 entries, DCE outperforms a single-thread core by
41% (up to 232%) on average and achieves better
performance than run-ahead execution on every
benchmark we studied (24% on average).
"
8) Questions and Answers : Wish list : Using GPUs for number crunching (Message 36841)
Posted 1 May 2009 by Simplex0
Post:
The GPU can be and ARE used as an cooperating processor, it process a given tasks and deliver the processed data back to the CPU.

I do not know anything regarding the mathematics in this project but to give you an idea of how it could be used I take the following example.

Say that you want to multiply 2 n*n matrix with each other. The matrix M itself is to large to be handle by the GPU but the matrix is build up with vectors v1, v2....vn and vector are build up by element e1, e2.....en. the element can be processed by the GPU, 2 at the time, and the processed data can be delivered back to the CPU.

So you see this is a linear process and the GPU are only used to process given tasks that it can handel much faster that the CPU.
9) Questions and Answers : Wish list : Using GPUs for number crunching (Message 36692)
Posted 11 Apr 2009 by Simplex0
Post:
Les Bayliss!
Just to get an idea of the speed gain, take a look at this link.

http://www.youtube.com/watch?v=nnsW-zB95Is
10) Questions and Answers : Wish list : Using GPUs for number crunching (Message 36690)
Posted 11 Apr 2009 by Simplex0
Post:

The fact that they can\'t do it does not mean that it can\'t be done.
A lot of the best optimized code written so fare is done by volunteers.
Currently I know of Seti@home, Milkyway@home and gpugrid.net that have
GPU optimized code and there are more project on the way like Lattice Project.
And you have Folding@Home that can use both ATI and NVIDIA cards.

Regarding argument that the extra speed is of no use is most likely nonsense.
If les of our computer time needs to be spent on climateprediction.net
it can be used by other projects.

And as I said before. Do you need to rewrite all of the code?
Is it not possible to start with a few GPU subroutines that run
under the main program?

Tomas




11) Questions and Answers : Wish list : Using GPUs for number crunching (Message 36683)
Posted 11 Apr 2009 by Simplex0
Post:
I am just speculating here and i have not done any programming in a long time, back in the Commodore 64 days :).

But is it not possible, as a first step, to concentrate on the most time-consuming routines in the program and have them to be processed by the GPU?

Tomas
12) Questions and Answers : Windows : Is all the work done lost after a crash? (Message 16101)
Posted 18 Sep 2005 by Simplex0
Post:
I had completed 12% of my first unit when my computer had an error and rebooted and
now the program seams to got stuck at 0% work done.
I seams that all the previous 12% of work is lost, it seams that my computer is not stable enough to run ClimatePrediction.




©2021 climateprediction.net