switching off ht for sfp

AndreD · Post by **AndreD** » Mon Nov 24, 2003 5:21 pm

for all with hyperthreading problems, here comes a workaround:
 
Open the taskmanage and select sfp under "processes" and choose "process affinity".
 
<img src="http://www.hamburg-audio.de/exchange/su ... anager.jpg" border="0" />
 
Here you can assign SFP to processor 0:
 
<img src="http://www.hamburg-audio.de/exchange/su ... Assign.jpg" border="0" />
 
all the best,
 
andre

[ This Message was edited by: Andre Dupke on 2003-11-26 06:27 ]

claudioD · Post by **claudioD** » Wed Nov 26, 2003 7:26 am

if you assign SFP to processor 0 will you lost half processing power ? or I'm saying a great bullshit ?

AndreD · Post by **AndreD** » Wed Nov 26, 2003 9:18 am

no,
sfp is running on logical processor 0 only!
(the cubase2/n2 audio engine seems to run on cpu 1)
we got less crackles, if sfp is set to processor 0!
(sfp is not desinged for multiprocessor support)
for sfp, it´s just like a ht-free setup!

the priority of your cpu-power-ressource should be the audio engine, not the sfp-surface

[ This Message was edited by: Andre Dupke on 2003-11-27 04:20 ]

valis · Post by **valis** » Wed Nov 26, 2003 9:46 am

Winxp & 2k will load balance everything evenly across multiple cpu's (Logical or physical). By setting an affinity you insure that the process (which you gave cpu affinity to) only stays on 1 cpu, but the OS still load balances everything else that isn't given an affinity as well.

Immanuel · Post by **Immanuel** » Wed Nov 26, 2003 11:34 am

I recomend to get this thread moved to "tips and tricks". I don't have HT, but it looks like a good solution.

claudioD · Post by **claudioD** » Thu Nov 27, 2003 5:41 am

On 2003-11-26 11:34, Immanuel wrote:
I don't have HT, but it looks like a good solution.

yes, I'm agree .
Andre , do you suggest to put the CPU affinity for the audio engine (Sonar 2.2 in my case) assigned to CPU 1 ?

[ This Message was edited by: claudioD on 2003-11-27 05:44 ]

AndreD · Post by **AndreD** » Thu Nov 27, 2003 6:26 am

just try it

the steinberg audio engine is working on procesor 1.
the n2/SX2 gui engine is working on processor 0.
(if multiprocessor is selcted in sx/n2 only, for shure...)
seems logical to me, to set the sfp-gui to processor 0 too...

is there a dual-processor-support in sonar like in sx/n2?
if not, this could be a workaround for non-ht-coded- apps ?!

[ This Message was edited by: Andre Dupke on 2003-11-27 07:14 ]