Welcome to MilkyWay@home

GPU Vs. CPU WU


Advanced search

Message boards : Number crunching : GPU Vs. CPU WU
Message board moderation

To post messages, you must log in.

AuthorMessage
Anders

Send message
Joined: 23 Dec 09
Posts: 3
Credit: 187,551
RAC: 0
100 thousand credit badge12 year member badge
Message 41162 - Posted: 30 Jul 2010, 16:07:53 UTC

Hi,

I can't find an answer to my question, so I will just ask it instead.

Is there a difference in the kind of work, that the CPU get and what the GPU get? I seem to remember, that Folding@home sent 'special' WU to the GPU, because they where limited in what work they could do. It all worked towards the same goal, but different CPU/GPU are better suited for some work than other.

Is it the same with MW - are the WU different?

/Anders
ID: 41162 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
ProfileKevint
Avatar

Send message
Joined: 22 Nov 07
Posts: 285
Credit: 1,076,786,368
RAC: 0
1 billion credit badge14 year member badge
Message 41163 - Posted: 30 Jul 2010, 16:53:18 UTC - in response to Message 41162.  


Same as far as I know
.
ID: 41163 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
ProfileThe Gas Giant
Avatar

Send message
Joined: 24 Dec 07
Posts: 1947
Credit: 240,884,648
RAC: 0
200 million credit badge14 year member badge
Message 41168 - Posted: 30 Jul 2010, 21:13:43 UTC - in response to Message 41163.  


Same as far as I know

Yup. Same. That's why the granted credit is the same for CPU work and GPU work.
ID: 41168 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Anders

Send message
Joined: 23 Dec 09
Posts: 3
Credit: 187,551
RAC: 0
100 thousand credit badge12 year member badge
Message 41169 - Posted: 30 Jul 2010, 22:25:03 UTC - in response to Message 41168.  


Same as far as I know

Yup. Same. That's why the granted credit is the same for CPU work and GPU work.


Okay, thank you.

The reason I asked, is my plan to turn off CPU tasks for MW and only make it do GPU tasks. That way, my CPU can do some other projects, that can't be run on the GPU.

Better use of my hardware. :-)
ID: 41169 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
ProfileThe Gas Giant
Avatar

Send message
Joined: 24 Dec 07
Posts: 1947
Credit: 240,884,648
RAC: 0
200 million credit badge14 year member badge
Message 41170 - Posted: 30 Jul 2010, 22:26:49 UTC - in response to Message 41169.  


Same as far as I know

Yup. Same. That's why the granted credit is the same for CPU work and GPU work.


Okay, thank you.

The reason I asked, is my plan to turn off CPU tasks for MW and only make it do GPU tasks. That way, my CPU can do some other projects, that can't be run on the GPU.

Better use of my hardware. :-)

Yup. That's what I do.
ID: 41170 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Anders

Send message
Joined: 23 Dec 09
Posts: 3
Credit: 187,551
RAC: 0
100 thousand credit badge12 year member badge
Message 41171 - Posted: 30 Jul 2010, 22:32:27 UTC - in response to Message 41170.  


The reason I asked, is my plan to turn off CPU tasks for MW and only make it do GPU tasks. That way, my CPU can do some other projects, that can't be run on the GPU.

Yup. That's what I do.


Hmm, what should I cange to make it do this?
I have looked though the settings, but can't find the right option. Under MilkyWay@home preferences, the option "Use CPU" is set to No (it has been this way for a long time) - but I still get CPU tasks. What other options should be changed be changed?
ID: 41171 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
ProfileWerkstatt

Send message
Joined: 19 Feb 08
Posts: 350
Credit: 140,436,377
RAC: 0
100 million credit badge14 year member badge
Message 41181 - Posted: 31 Jul 2010, 11:19:32 UTC - in response to Message 41171.  

Hi,
this has been seen on different projects as well.
Try seperate setting for work/home, in most cases that helped.

Alexander
ID: 41181 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote
Chris
Avatar

Send message
Joined: 3 Oct 10
Posts: 42
Credit: 320,242
RAC: 0
100 thousand credit badge11 year member badge
Message 46908 - Posted: 2 Apr 2011, 3:00:48 UTC - in response to Message 41169.  

Hold on now. After reading through a bunch of GPU threads per someone's suggestion, it does seem the workload is different. N-body is CPU only while other work can be done by both the GPU and CPU but it seems they have the GPU's do it so that because they are way faster at it.

My understanding is the N_body simulation(wonder what the N stands for) is calculating the model for the trail of the Sagitarius stream?

Anyways I'm plowing through old threads here ;)
ID: 46908 · Rating: 0 · rate: Rate + / Rate - Report as offensive     Reply Quote

Message boards : Number crunching : GPU Vs. CPU WU

©2022 Astroinformatics Group