How to run 2 instance of Boinc simultaneously ? (on Win)
When I start another boinc_gui.exe (from another folder), just start blink or appear from systray the old instance.
How ?? :-) Thanks

There is no real reason to run 2 instances of BOINC. BOINC will run as many copies of the applications as there are CPUs, provided your settings allow it. Running more applications than CPUs tends to be counter productive.

John Keck
BOINCing since 2002/12/08

Ok, then my question is, how to run 2 units at once ? I read some older threads about CPU with HT, where people running 1 or 2 units at one time, how they wants. - How to do it ? I have some PC with HT, but there is stil only 50% of CPU usage - how to set unit to the "second" CPU, which delayed ??
Thanks.

If BOINC is only using 50% of your CPU and processing only one work unit at a time, then hyperthreading is disabled on your PC.


<a>

Ahaa, super, thanks for kick me forward :-). I have to look to BIOS... (I guess there is a problem or not ?)

> Ahaa, super, thanks for kick me forward :-). I have to look to BIOS... (I
> guess there is a problem or not ?)
>
>
Yes you need to enable HT in the bios!I aslo think you need to reinstall you OS
for it to work,but i'm not to sure on that one!

Check this thread out it may help you...Learn More

> Ahaa, super, thanks for kick me forward :-). I have to look to BIOS... (I
> guess there is a problem or not ?)
>
>
An easy way to see if your HT is enabled is looking in Taskmanager in Windows, if it shows 2 CPU's then its working. After that you just need to set your BOINC prefs for two CPU's. I works fine on my PC.

As long as you are running Windows 2000 Professional or Windows XP Professional, you shouldn't have to re-install Windows. It should automatically recognize H/T as a second CPU and make use of it. But beware that Windows 98, Win98SE, and Windows ME are NOT multiprocessor capable. They
will give you the "New hardware found" and recognize that there is a second CPU, but they will NOT make any use of it. Happy crunching.

Regards, Daniel.

> Yes you need to enable HT in the bios!I aslo think you need to reinstall you
> OS
> for it to work,but i'm not to sure on that one!
>
>
>
>
HT is hardware based so you should not have to reinstall the OS. However if you ever update your BIOS then check your settings to make sure they didn't revert back to the default.

> As long as you are running Windows 2000 Professional or Windows XP
> Professional, you shouldn't have to re-install Windows. It should
> automatically recognize H/T as a second CPU and make use of it. But beware
> that Windows 98, Win98SE, and Windows ME are NOT multiprocessor capable. They
> will give you the "New hardware found" and recognize that there is a second
> CPU, but they will NOT make any use of it. Happy crunching.
>
> Regards, Daniel.
>
Windows XP Home will also recognize and use HT.

>> Windows XP Home will also recognize and use HT.


Really??? I didn't think MS gave anything away with base products anymore. I will have to try it.

Thanks, Barto! I love it when I learn something new :o)

> If BOINC is only using 50% of your CPU and processing only one work unit at a
> time, then hyperthreading is disabled on your PC.

Uhh... no. The only way BOINC will only use 50% of your CPU is if HT is ENABLED but BOINC is only running one instance of the seti@home client. And the only way THIS will happen is if it either can't get enough work from the server to keep both CPUs running or you have it set to only use 1 CPU in your preferences.

> > If BOINC is only using 50% of your CPU and processing only one work unit
> at a
> > time, then hyperthreading is disabled on your PC.
>
> Uhh... no. The only way BOINC will only use 50% of your CPU is if HT is
> ENABLED but BOINC is only running one instance of the seti@home client. And
> the only way THIS will happen is if it either can't get enough work from the
> server to keep both CPUs running or you have it set to only use 1 CPU in your
> preferences.
>
>

Hmm, bad news, listen my situation:
Several CPU's with HT, all recognize as HT, because in Task Manager are as 2 CPU's
OS is in most case Win XP Pro or W 2003 Ent. Server or W2k Adv. server.
My preference are on default > it means 1 or 2 CPU in 1 PC enabled.
And the question of work - On 2 computers I have 2 more units in queque as ready to run, so work is also available, BUT STILL IS THERE ONLY 50% CPU USAGE ;-(( Any other idea ?
Thanks !

>
> Hmm, bad news, listen my situation:
> Several CPU's with HT, all recognize as HT, because in Task Manager are as 2
> CPU's
> OS is in most case Win XP Pro or W 2003 Ent. Server or W2k Adv. server.
> My preference are on default > it means 1 or 2 CPU in 1 PC enabled.
> And the question of work - On 2 computers I have 2 more units in queque as
> ready to run, so work is also available, BUT STILL IS THERE ONLY 50% CPU USAGE
> ;-(( Any other idea ?
> Thanks !
>
>
Try to attach again. Only an idea.

>> Windows XP Home will also recognize and use HT.

Yes, Bill is right. Sorry... Forgot about that one.


> Hmm, bad news, listen my situation:
> Several CPU's with HT, all recognize as HT, because in Task Manager are as 2
> CPU's
> OS is in most case Win XP Pro or W 2003 Ent. Server or W2k Adv. server.
> My preference are on default > it means 1 or 2 CPU in 1 PC enabled.
> And the question of work - On 2 computers I have 2 more units in queque as
> ready to run, so work is also available, BUT STILL IS THERE ONLY 50% CPU USAGE
> ;-(( Any other idea ?
> Thanks !

If you have your account preferences set to use 2 CPU's in a multiprocessor machine, and H/T is enabled in your BIOS, and you see 2 graphs for CPU's in the task manager, then it should be processing 2 WU's at once. If the 'Work' tab in BOINC shows 2 WU's running, then H/T is working properly. As far as the CPU usage chart in the task manager goes, (at least in XP Pro), for some reason it shows each processor at 50% load. I have a Dual Opteron 248 machine, A Dual PII Xeon machine, and a 3.06Ghz P4 with H/T, and they are all processing 2 WU's at a time, and the task manager shows 50% load per CPU in all of the machines. I am beginning to think that what the task manager is telling me is that each CPU is processing 50% of the total machine's capacity... I.E. 100% workload times 2 CPU's= 100% of the machine's total capability. If one graph showed 50%, and the other showed 0%, then one CPU is working at full capacity, and the other is idle. I could be wrong, but this is how it appears to me. Happy Crunching...

Regards, Daniel.

> If you have your account preferences set to use 2 CPU's in a multiprocessor
> machine, and H/T is enabled in your BIOS, and you see 2 graphs for CPU's in
> the task manager, then it should be processing 2 WU's at once. If the 'Work'
> tab in BOINC shows 2 WU's running, then H/T is working properly. As far as the
> CPU usage chart in the task manager goes, (at least in XP Pro), for some
> reason it shows each processor at 50% load. I have a Dual Opteron 248 machine,
> A Dual PII Xeon machine, and a 3.06Ghz P4 with H/T, and they are all
> processing 2 WU's at a time, and the task manager shows 50% load per CPU in
> all of the machines.

Thanks for replay, but BOINC processing only one WU at a time. (where I wrote, that are processing 2 WU's at once??).
My CPU's are mostly Xeon with HT, PIV 2.8&HT...so, still nobody replay, how to run 2 WU at once :-( (But thanks for all reaction above !)

>
> > If you have your account preferences set to use 2 CPU's in a
> multiprocessor
> > machine, and H/T is enabled in your BIOS, and you see 2 graphs for CPU's
> in
> > the task manager, then it should be processing 2 WU's at once. If the
> 'Work'
> > tab in BOINC shows 2 WU's running, then H/T is working properly. As far
> as the
> > CPU usage chart in the task manager goes, (at least in XP Pro), for some
> > reason it shows each processor at 50% load. I have a Dual Opteron 248
> machine,
> > A Dual PII Xeon machine, and a 3.06Ghz P4 with H/T, and they are all
> > processing 2 WU's at a time, and the task manager shows 50% load per CPU
> in
> > all of the machines.
>
> Thanks for replay, but BOINC processing only one WU at a time. (where I wrote,
> that are processing 2 WU's at once??).
> My CPU's are mostly Xeon with HT, PIV 2.8&HT...so, still nobody replay,
> how to run 2 WU at once :-( (But thanks for all reaction above !)
>
>
Just for grins, set up preferences for home in your account, then make sure all your computers are set to use "home" preferences and then do an update from the projects tab.

Verify that your preferences are set to use at most 2, 4 or however many CPUs your largest box has including virtual CPUs. Update/save the settings on the web site just in case they are not stored properly. Update the settings in the client. Exit and restart the client. Wait about 15 minutes. If you are still only running one instance after that, exit the client. Create numbered directory(s) under boinc/slots for each CPU on the computer ie. 0, 1, ect. Then restart the client.

Sorry I misunderstood the question the first time.

John Keck
BOINCing since 2002/12/08