Limiting number of cores

Roberto Sartori [VENETO]
Roberto Sartori...
Joined: 26 Apr 09
Posts: 14
Credit: 1,318,111
RAC: 0
Topic 196110

Hello to everyone.
There is the possibility of limiting the use of the cores of the CPU, for example, use 3 cores in a quad-core for einstein@home? Without using the resource share that does not work..
thanks :)

Gundolf Jahn
Gundolf Jahn
Joined: 1 Mar 05
Posts: 1,079
Credit: 341,280
RAC: 0

Limiting number of cores

To use 3 cores in a quad-core set

On multiprocessors, use at most   75% of the processors
Enforced by version 6.1+

in your Computing preferences.

Gruß,
Gundolf

Computer sind nicht alles im Leben. (Kleiner Scherz)

Roberto Sartori [VENETO]
Roberto Sartori...
Joined: 26 Apr 09
Posts: 14
Credit: 1,318,111
RAC: 0

RE: To use 3 cores in a

Quote:
To use 3 cores in a quad-core set
On multiprocessors, use at most   75% of the processors
Enforced by version 6.1+

in your Computing preferences.

Gruß,
Gundolf


thanks... and if i want to use 3 cores with einstein and one core with another project? :)

Claggy
Claggy
Joined: 29 Dec 06
Posts: 560
Credit: 2,699,403
RAC: 0

RE: RE: To use 3 cores in

Quote:
Quote:
To use 3 cores in a quad-core set
On multiprocessors, use at most   75% of the processors
Enforced by version 6.1+

in your Computing preferences.

Gruß,
Gundolf


thanks... and if i want to use 3 cores with einstein and one core with another project? :)


Then set your resource share to 75% to Einstein and 25% to the other project ;-)

Claggy

Roberto Sartori [VENETO]
Roberto Sartori...
Joined: 26 Apr 09
Posts: 14
Credit: 1,318,111
RAC: 0

RE: RE: RE: To use 3

Quote:
Quote:
Quote:
To use 3 cores in a quad-core set
On multiprocessors, use at most   75% of the processors
Enforced by version 6.1+

in your Computing preferences.

Gruß,
Gundolf


thanks... and if i want to use 3 cores with einstein and one core with another project? :)

Then set your resource share to 75% to Einstein and 25% to the other project ;-)

Claggy


i've try, but it doesn't work...boinc always downloads tasks for eistein...and elaborate only einstein wus...:(

Claggy
Claggy
Joined: 29 Dec 06
Posts: 560
Credit: 2,699,403
RAC: 0

RE: RE: RE: RE: To

Quote:
Quote:
Quote:
Quote:
To use 3 cores in a quad-core set
On multiprocessors, use at most   75% of the processors
Enforced by version 6.1+

in your Computing preferences.

Gruß,
Gundolf


thanks... and if i want to use 3 cores with einstein and one core with another project? :)

Then set your resource share to 75% to Einstein and 25% to the other project ;-)

Claggy


i've try, but it doesn't work...boinc always downloads tasks for eistein...and elaborate only einstein wus...:(


Boinc is probably paying Debt back to Einstein, in time it should equalise, then it should work,

Claggy

Roberto Sartori [VENETO]
Roberto Sartori...
Joined: 26 Apr 09
Posts: 14
Credit: 1,318,111
RAC: 0

RE: RE: RE: RE: Quote

Quote:
Quote:
Quote:
Quote:
Quote:
To use 3 cores in a quad-core set
On multiprocessors, use at most   75% of the processors
Enforced by version 6.1+

in your Computing preferences.

Gruß,
Gundolf


thanks... and if i want to use 3 cores with einstein and one core with another project? :)

Then set your resource share to 75% to Einstein and 25% to the other project ;-)

Claggy


i've try, but it doesn't work...boinc always downloads tasks for eistein...and elaborate only einstein wus...:(

Boinc is probably paying Debt back to Einstein, in time it should equalise, then it should work,

Claggy


i don't think so, because i'm using einstein with 500.000 credits and 3000 rac, and the other project has 3000 credit and 30 rac...

Gary Roberts
Gary Roberts
Moderator
Joined: 9 Feb 05
Posts: 5,870
Credit: 115,692,750,080
RAC: 34,676,204

RE: i don't think so,

Quote:
i don't think so, because i'm using einstein with 500.000 credits and 3000 rac, and the other project has 3000 credit and 30 rac...


But can the other project actually supply work? If the other project has no tasks available to send, BOINC will run only E@H tasks on all the cores. A debt will build up to the other project and when the other project does have tasks, BOINC will favour it until the debt is repaid.

What is the other project and are you sure it has tasks available?

Cheers,
Gary.

archae86
archae86
Joined: 6 Dec 05
Posts: 3,156
Credit: 7,174,654,931
RAC: 721,888

RE: Then set your resource

Quote:

Then set your resource share to 75% to Einstein and 25% to the other project ;-)

Claggy


Claggy, I've seen you be a reliable source time after time, but I think this is an error.

Resource share appears as part of "computing preferences" which in the Einstein page set says right at the top of the page "These apply to all BOINC projects in which you participate."

On the SETI version of this page, an additional line adds the observation "On computers participating in multiple projects, the most recently modified preferences will be used."

Now, on the other hand, if you are using app_info to run simultaneous tasks on a GPU, nothing tops you from running 3-fold Einstein and 1-fold SETI, but that is another matter not involving the computing preference mechanism.

ExtraTerrestrial Apes
ExtraTerrestria...
Joined: 10 Nov 04
Posts: 770
Credit: 567,953,684
RAC: 118,473

Nah, he should be right about

Nah, he should be right about this. Ressource share is set for each project individually (and in each profile, to be precise). And it tells BOINC just what one would expect, in this case "dedicate 75% of my computing time to Einstein and 25% to the other one. If you can."

Note that this doesn't mean you're getting a 3:1 RAC ratio, as this depends on the projects themselves.

MrS

Scanning for our furry friends since Jan 2002

Roberto Sartori [VENETO]
Roberto Sartori...
Joined: 26 Apr 09
Posts: 14
Credit: 1,318,111
RAC: 0

the project is test4theory of

the project is test4theory of CERN, that has a very long deadline, so i have to find a way to elaborate wu from t4t and wu from einstein at the same time...:)

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.