Still better would be to do it automatically based on resource usage.
jm7
Peter Slacik
<peter.b.sla...@g
mail.com> To
Ed A <[email protected]>
09/22/2010 09:18 cc
AM [email protected],
[email protected], boris
mouradian <[email protected]>
Subject
Re: [boinc_dev] option to choose
the number of CPU cores to each
project
The most "user-friendly" option would be to limit the number of used
cores (max. number of active tasks (or threads)) according to particular
project's user preferences - either per-project or per-application. And
at best separately in each venue...
Peter Slacik
On Wed, 22 Sep 2010 08:06:21 -0500, Ed A wrote:
> There are projects however that we can't run on multi core CPUs because
the
> resource requirements are too high to allow more than 1 or 2 instances.
> This is getting to be more and more of a problem as the number of CPU
cores
> keeps increasing. Limiting the number of cores on these projects would
> allow us to participate. An "expert" option or even a switch in the
> cc_config.xml or app_info.xml would help.
>
> Regards/Ed
>
>
> On Wed, Sep 22, 2010 at 7:37 AM, <[email protected]> wrote:
>
>
>> Assigning a particular number of cores to each project is too rigid.
>> Sometimes projects cannot supply work, do we leave a CPU idle?
Sometimes
>> work needs extra CPU time right now to finish on time. Do we let the
work
>> return late and be worthless to the project? If we don't, do we break
the
>> resource shares by not repaying the borrowed resource share or do we
break
>> the CPUs / project setup by paying back the CPU time? Do we limit each
>> machine to no more than N projects where N is the number of CPUs? Some
>> tasks are multi threaded and run better if all CPUs on the system are
>> allocated to each task for the duration of the task. Do we not allow
these
>> tasks?
>>
>> The answers for all of these questions have fallen on the side against
>> rigidly assigning a number of CPU cores to each project.
>>
>> jm7
>>
>>
>> boris mouradian
>> <[email protected]
>> om>
To
>> Sent by: [email protected]
>> <boinc_dev-bounce
cc
>> [email protected]
>> u>
Subject
>> [boinc_dev] option to choose the
>> number of CPU cores to each
project
>> 09/21/2010 02:31
>> PM
>>
>>
>>
>>
>> Hello
>>
>> I do not know if this is the right mailbox for this request, but would
>> anyone know why the option to choose the number of CPU cores to each
>> project
>> was not successful in developing boinc manager ?
>>
>> thank you
>>
>>
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