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How to assign cores?
Last post Mon, Jan 30 2012 by DG, 7 replies.
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Posted on Mon, Jan 30 2012 11:08
by Thinwood
Joined on Thu, Sep 30 2010, Hamburg, Germany, Posts 40

I run WIN 7 (64), Cubase 5 (64), Vienna MIR (legacy 1860) and - within my MIR-template - up to 80 VI Pro's. All this on one DAW (specs below).

The programs (WIN 7, Cubase 5 etc.) are stored on one hard-drive (C:\). Projects are stored on another hard-drive (D:\), while the sample-content is stored on two further hard-drives (E:\ and F:\).

This set-up has worked well so far, as generally not more than 20 tracks/instruments have been in use. Now, exceeding that number of tracks/instruments used, I'm confronting severe audio-crackles, distortion and drop-outs.

All samples are fully loaded, so that is not the problem. Also CPU never goes beyond 20%, and RAM has 8 GB left.

What is the problem?

Could it be that I should assign specific cores to WIN 7, Cubase, MIR etc. to make sure that each application runs correctly?

If so: How do I do that (haven't found any tool in WIN and cubase) and how many cores should be assigned?

Is there anything else I should consider?

Any ideas and comments are highly appreciated.

Kind regards

Windows 7 (64 bit), Cubase 6.5.3 (64 bit); DAW: 2 x 2,67GhZ Intel Xeon X 5650 (Hexacore), 72 GB RAM; Audio Card: RME AIO Hammerfall
Posted on Mon, Jan 30 2012 14:58
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2832

I have the same problem on my Mac with Logic !

MacBook Pro 2019 16" 64gb 4TB + 2 x Odisseey G9 49"

MacPro 2010 12 core 2.93 ghz 64 GB Mac OS X 10.11 2722 Rocket Raid Sata III card with 8 x ssd

Kbd : P80 Yamaha, S88 and S25 Komplete Kontrol, DX7
I-Controls Pro, 2xMidi expression pedals
Synth : many....
--
Logic X , Dorico, Band In A Box, ORB Composer
VSL : MIR PRO, Appassionata Strings I, Solo strings , Wind and Brass Complete, Dimension Brass, Big Band Orchestra series, Many Synchronised libs
Kontakt, Omnisphere, QLSO, QLSC, CS 80, Arturia V5, Maximo, Realivox Blue. CS 80 V3, The Orchestra 3, Art Conductor, Genesis Children Choir, Lunaris, Lacrimosa
Many Sychron Instruments

Final Cut pro
Camera full HD
Posted on Mon, Jan 30 2012 15:55
by Thinwood
Joined on Thu, Sep 30 2010, Hamburg, Germany, Posts 40

Hi Cyril,

have you found any help on this somewhere else in the forum? As far as I can see, the problem has been described by several users every now and then; however, I could not find any substantial hints on how to solve this.

In some other thread DG recommended to assign specific cores for each program - without saying how to do this.

Maybe someone from VSL could jump in here? Sounds like a re-appearing issue of general importance (at least for some of us) ...

Cheers, Dirk

Windows 7 (64 bit), Cubase 6.5.3 (64 bit); DAW: 2 x 2,67GhZ Intel Xeon X 5650 (Hexacore), 72 GB RAM; Audio Card: RME AIO Hammerfall
Posted on Mon, Jan 30 2012 16:56
by DG
Joined on Wed, May 12 2004, Posts 8608

 Hey, don't drag me into this.....! I was talking specifically about Pro Tools, where you have to assign a number of cores to the program (at least one less than you actually have), and VEP, where you can assign how many threads you want to use per instance.

However, if you really want to mess around with assigning number of cores to specific programs (at your own risk) then:

  1. Open Task Manager
  2. On the Processes Tab, find your program and right click the name
  3. Click Set Affinity
  4. Uncheck the cores that you don't want this program to use.

Of course every time you start the program again it will have "forgotten" its settings. It is possible to run a script to do all of this automatically, but see how you get on first.

DG

Nuendo 6.03, 4.3
2 x Intel Xeon x5675 3.07GHz Hex Core
48GB RAM
Windows 7 (x64)Pro
RME Multiface II
Intensity
ATI HD5400 series graphics card
Posted on Mon, Jan 30 2012 17:14
by Cyril Blanc
Joined on Thu, Dec 19 2002, Paris France, Posts 2832

It looks like they are having problems because the develloper that was speaking with since over a year and this with the late benediction of Dietz,  did not answer to my last 3 mails and when I wrote asking him what was the problem  he told me that now I have to go thru support.

So I have open a case at the yesterday let's wait and see what us there answer :

here is my mail

--------



Hello VSL



I have a Logic song that is using most of the instruments of a  VE SERVER that is using MIR with 7.1 In this song I have also other instruments from PLAY and a few EXS that are not going to the VE
When I play the song the tracks are not in sync

What have I done wrong ?
As they are still problems with MIR, on the forum I was asking guidance If you have clicks, pops, big cracks, missing note, hanging note, notes not playing in time... 

Thanks in advance for your help

Best

Cyril

Best
Cyril


MacBook Pro 2019 16" 64gb 4TB + 2 x Odisseey G9 49"

MacPro 2010 12 core 2.93 ghz 64 GB Mac OS X 10.11 2722 Rocket Raid Sata III card with 8 x ssd

Kbd : P80 Yamaha, S88 and S25 Komplete Kontrol, DX7
I-Controls Pro, 2xMidi expression pedals
Synth : many....
--
Logic X , Dorico, Band In A Box, ORB Composer
VSL : MIR PRO, Appassionata Strings I, Solo strings , Wind and Brass Complete, Dimension Brass, Big Band Orchestra series, Many Synchronised libs
Kontakt, Omnisphere, QLSO, QLSC, CS 80, Arturia V5, Maximo, Realivox Blue. CS 80 V3, The Orchestra 3, Art Conductor, Genesis Children Choir, Lunaris, Lacrimosa
Many Sychron Instruments

Final Cut pro
Camera full HD
Posted on Mon, Jan 30 2012 17:42
by Thinwood
Joined on Thu, Sep 30 2010, Hamburg, Germany, Posts 40

DG wrote:
Hey, don't drag me into this.....!
 

No worry, DG... Smile I did not mean to drag you into anything, I just recalled you digressing on "assigning cores" somewhere in this forum... and was right, though.

So what are the risks of messing around with cores in WIN 7? Do you recommend it? Does it influence the performance for the better?

Kind regards

Windows 7 (64 bit), Cubase 6.5.3 (64 bit); DAW: 2 x 2,67GhZ Intel Xeon X 5650 (Hexacore), 72 GB RAM; Audio Card: RME AIO Hammerfall
Posted on Mon, Jan 30 2012 17:46
by DG
Joined on Wed, May 12 2004, Posts 8608
Thinwood wrote:

DG wrote:
Hey, don't drag me into this.....!
 

No worry, DG... Smile I did not mean to drag you into anything, I just recalled you digressing on "assigning cores" somewhere in this forum... and was right, though.

So what are the risks of messing around with cores in WIN 7? Do you recommend it? Does it influence the performance for the better?

Kind regards

 

The risks are that your system may become unstable. The benefits are that it might improve performance. Try it and see if it works. If not, a re-boot will put you back where you were.

DG

Nuendo 6.03, 4.3
2 x Intel Xeon x5675 3.07GHz Hex Core
48GB RAM
Windows 7 (x64)Pro
RME Multiface II
Intensity
ATI HD5400 series graphics card
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