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Subject:Not using both cores??
Date:4/11/2008 12:30:22 AM

Hey guys,

I've been searching a bit on this forum for something like that but can not find anything.

I am using SF8 a lot for work and need to be up to speed. I noticed that SF8 and also 9 does NOT use both cores on a dual core INTEL system. Does anyone know if Soundforge 8 or 9 are optimized for dual cores??? I thought they were but it does not look like it. Processing a file with Wavehammer or any other plug-ins gives me only 50% use total of the cores for SF.

At first, I thought it was my external HD not being to par so I purchase a eSATA external drive which gives me over twice the speed of my older one (both 7200 rpms and tested this with an HD benchmark) and still no gain whatsover in SF.

Any idea why??

Jack

Subject:RE: Not using both cores??
Reply by: Kennymusicman
Date:4/11/2008 1:56:45 PM

SF9 uses all 4 cores on my quadcore (tested with wavehammer since you mentioned it)
Subject:RE: Not using both cores??
Date:4/11/2008 10:09:29 PM

Thanks for letting me know. So why do I get only 50% use? Is there something I can modify to make this happen on my computer or SF?
Subject:RE: Not using both cores??
Date:4/20/2008 4:30:12 AM

Ok, not many people are answering this one.

Can you guys test this for people that have dual cores processors?

Run WaveHammer on a file and check in your Windows Task Manager > Performance Tab and see if both Cores are working at 100%.

Mine does not and I find this weird as I heard SF 8 and 9 are supposed to be Multi-Cores ready.

Let me know,

Thanks!
Subject:RE: Not using both cores??
Reply by: Steven Myers
Date:4/20/2008 8:57:17 AM

So why do I get only 50% use?

Just a guess: because Wavehammer isn't the most CPU-intensive task in the world, and maybe your CPU doesn't need more than half its horsepower to get the job done?

Under a relatively weak Core2Duo and SoundForge, I ran Wavehammer on a file. Task Manager showed one core running at about 70% and the other about 40%.
OTOH, when I use Vegas to render a .avi to MPEG-2, both cores run near max.
Subject:RE: Not using both cores??
Date:4/25/2008 10:11:59 PM

Quote: Just a guess: because Wavehammer isn't the most CPU-intensive task in the world, and maybe your CPU doesn't need more than half its horsepower to get the job done?

Well, I don't think that guess is right as we should see 100% CPU load when nothing else is being calculated by the CPU. To me, it sounds like SF does NOT support dual core or even quad core CPUs. Vegas seems to support it as per your test. Why is SF not multi-core supported??
Subject:RE: Not using both cores??
Reply by: Steven Myers
Date:4/26/2008 2:21:56 AM

...we should see 100% CPU load when nothing else is being calculated by the CPU

Really?! Then there's something seriously wrong with my rig. I get 0% (both cores) when SF is processing nothing, and 92% (both cores) when running the iZotope RX denoiser C algorithm. Other plug use various amounts in between.
Subject:RE: Not using both cores??
Reply by: Kennymusicman
Date:4/27/2008 3:05:03 AM

"SF does NOT support dual core or even quad core CPU"


I already stated to you that SF9 DOES use all my cores appropriately in my first reply...
And I explicetly tested it with WaveHammer for you.
Subject:RE: Not using both cores??
Date:5/4/2008 4:53:42 PM

Kennymusicman, no need to get nasty man, maybe you get all cores at 100% on your quad core but I do get only 50% on my dual core with SF8? Same with the SF 9 demo. Just asking if someone knows the answer to that. Not using 100% of the cores does not sound right to me. I use SF8 a good 12 hours a day for work and trust me, if I can get both cores going at 100% instead of 50%, I would go twice or near as fast. For me, this is a huge help for what I do.

Jacques
Subject:RE: Not using both cores??
Date:5/4/2008 4:57:50 PM

Quote: I get 0% (both cores) when SF is processing nothing, and 92% (both cores) when running the iZotope RX denoiser C algorithm. Other plug use various amounts in between.

Strange, I get the same 50% result with all my Wave's plug-ins too. Same goes for all the other laptops we use. I will need to test it with an Izotope plug-in to see if I get the same result.

Jacques
Subject:RE: Not using both cores??
Reply by: Kennymusicman
Date:5/4/2008 5:00:38 PM

"Kennymusicman, no need to get nasty man"

There was absolutely no malicious intention on my part. I'll leave it at that,..
Subject:RE: Not using both cores??
Reply by: _TJ
Date:5/6/2008 4:54:03 PM

Sound Forge is a multithreaded Application, it will indeed make use of multiple cores. Although each individual plug-in can (usually) use only 1 core.

The usual reason that you can't get all of your cores to 100% is that getting data off of the disk is the limiting factor for processing.

This is really common in modern PC's, where the CPUs are 1000's of times faster than they were 5 years ago, but disks aren't even 10 times faster.

tj

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