Let me try to explain what I want: I participate with

- malariacontrol.net
- Milkyway@home
- Test4Theory@Home
- World Community Grid
- SETI@home

With the BOINC Settings I have usually two task running one of the above including SETI@home (without my NVIDIA GPU) and SETI@home (with my NVIDIA GPU). Of course SETI@home with GPU runs a lot faster!
What I want now is two projects running, but never two SETI@home at the same time. Can I do that..?

IIRC the only way to do that is to setup 2 instances of BOINC, putting them in different folders. I know this works for GPU but I don't think that you can differentiate CPU cores for what you want to dpo

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In a rich man's house there is no place to spit but his face.
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no way I can tell SETI@home to run only with my GPU?

Sure you can. Go to your Seti Preferences and set it to yes, GPU ok or something like that.. Now a bit of foot work, all the other projects will have to be disabled with regards to GPU work.

Works fine for me.

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Pluto will always be a planet to me.

Seti Ambassador
Not to late to order an Anni Shirt

Go to your SETI@home preferences:
http://setiathome.berkeley.edu/prefs.php?subset=project

At the bottom of page click Edit SETI@home preferences
... and change "Use CPU" to No (uncheck it)

At the bottom of page click [Update preferences]


This way you will not receive SETI@home tasks for CPU in the future.
(but the CPU tasks you already have in the computer will continue to run)

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- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

Sure you can. Go to your Seti Preferences and set it to yes, GPU ok or something like that...

I had that option from the begining. What I want is that all Seti tasks only run with CPU and GPU

...all the other projects will have to be disabled with regards to GPU work...

The only other project from all my projects that supports GPU would be Milkyway,but for them my GPU is not good enough:

Your NVIDIA GPU lacks the needed compute capability (1.3, required for double precision math

Yesterday: "no way I can tell SETI@home to run only with my GPU?"
Today: "What I want is that all Seti tasks only run with CPU and GPU"

First - Make Up Your Mind
Then - ask how

No one can help you if you can't clearly tell what do you want??

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- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

Each SETI task is either CPU or GPU, not both.

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BOINC WIKI

Okay once more and hopefully more clearly: I want that SETI@home runs always with CPU and GPU and no second (my BOINC Managers always runs two task at the same time) SETI@home task parallel to the first (it takes them longer without GPU and they're blocking resources for other non SETI@home tasks...

Does that make sense? If yes can I make it somehow working?
(Workaround maybe something like that I never want two SETI@home tasks at the same time)

No, it is not possible to run one task on both CPU cores and GPU simultaneously. On no project. This is because, as you found out already, the GPU is so much faster than the CPU can ever be. This is because all the processor cores inside a GPU will attack that one task at the same time, whereas tasks running on the CPU will be one task per CPU core.

Mind, thus far all work done on the GPU will use a CPU core already. This is because the data still has to be read from disk, translated into something the GPU can use, transported in and out of the GPU's memory, translated back into something the humans can read and written to disk. That's what the CPU does. The GPU will just do the calculations.

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Okay once more and hopefully more clearly: I want that SETI@home runs always with CPU and GPU and no second (my BOINC Managers always runs two task at the same time) SETI@home task parallel to the first (it takes them longer without GPU and they're blocking resources for other non SETI@home tasks...

Does that make sense? If yes can I make it somehow working?
(Workaround maybe something like that I never want two SETI@home tasks at the same time)

If you want to limit SETI@Home to one CPU and the GPU you can change your preferences to tell SETI to use 50% of your processors (50% of dual core one be a single CPU).

Of course, I seriously question that SETI@Home is blocking resources for other non-SETI tasks because SETI@Home runs at the lowest CPU priority. The resource handling is done by the Operating System automatically, so that if a program that is running at a higher priority needs more resources, it will take them away from lower priority programs like SETI@Home.

I let BOINC use all CPUs in all of my systems and never have a problem with resource contention, and I multi-task a lot!

If you want to limit SETI@Home to one CPU and the GPU you can change your preferences to tell SETI to use 50% of your processors (50% of dual core one be a single CPU).

But that would restrict all other BOINC-project tasks (non-SETI) to that one core too.

@Martin: The setting nearest to your wish would be to let SET@home only use your GPU (set 'use CPU' to 'no') and let all other projects use (only) the CPUs. That way there would be always one SETI task running (on the GPU) beside those of all other projects (four at your current HT- and preference setting).

Gruß,
Gundolf

No, it is not possible to run one task on both CPU cores and GPU simultaneously...

I'm no expert at all. But since I changed the settings and don't let the SETI@home project use my CPU it does takes longer to finish a task! Besides my BOINC Manager says 0.19 CPUs + 1.00 NVIDIA GPUs..?

[quote]I let BOINC use all CPUs in all of my systems and never have a problem with resource contention, and I multi-task a lot!

Let me give you an example:

SETI@home takes 30 min with GPU and 1 hour without. I always run two tasks at the same time from which 1 is permanent a SETI Task and all other projects besides SETI take 1 hour, too. As you can easily see it would be less economic to let SETI work out a task during 1 hour (and block during that hour all other projects)...

@Martin: The setting nearest to your wish would be to let SET@home only use your GPU (set 'use CPU' to 'no') and let all other projects use (only) the CPUs. That way there would be always one SETI task running (on the GPU) beside those of all other projects (four at your current HT- and preference setting).

Gruß,
Gundolf

Hi Gundolf

Ich kann SETI nicht irgendwie verbieten mehr als eine Aufgabe gleichzeitig auszuführen..?

Gruss
Martin

Nope, only by restricting it to the (single) GPU.

Gruß,
Gundolf

Besides my BOINC Manager says 0.19 CPUs + 1.00 NVIDIA GPUs..?

Yes, that's the "reading from disk, translating into something the GPU can use, transporting in and out of the GPU's memory, translating back into something the humans can read and writing to disk" part for the CPU. It does not do any calculations on the task that's running on the GPU.

I may still do calculations, with the rest of the CPU core, but then on its own task. Not on the same task that's running on the GPU.

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Thanks for all your help :)