Network Render - 8 Cores to 5 -- Why? at DVinfo.net

Go Back   DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

What Happens in Vegas...
...stays in Vegas! This PC-based editing app is a safe bet with these tips.


Reply
 
Thread Tools Search this Thread
Old August 20th, 2008, 08:42 PM   #1
Tourist
 
Join Date: Aug 2008
Location: Minneapolis MN
Posts: 2
Network Render - 8 Cores to 5 -- Why?

First post here, but Iíve been learning from posts here for some time.

You guys have been a big help.

Hereís a mystery I canít solve.

Iíve got four PCs working together doing Network Rendering in Vegas 8.b

1 Ė Quadcore
2 - Athlon X2
3 Ė Opteron dual core
4 Ė Raid Server

Quadcore, Athlon and Opteron are renderers. Raid Server serves media and accepts finished rendered files.

I am NOT using distributed rendering.

OK, hereís the mystery Ė When I start a big render job Ė say 12 veg files Ė I send out four jobs to each renderer.

All three renderers do the first job at max CPU usage. All three machines are running at 98, 99 or 100%.

In other words, during the first round of jobs, Iíve got eight cores going full blast. Very nice.

However, as each renderer finishes its first job and moves to the second, something odd happens.

Athlon X2 continues to work at 100%. Both cores are pegged.

However, Quadcore and Opteron both scale way back on job 2 and all subsequent jobs..

All four processors on Quadcore are working, but only at around 25% average. Very spiky usage.

Opteronís two processors keep working, too, but one core works around 90% and the other spikes around a lot, averaging about 25%.

On Round 2 and subsequent rounds, both Opteron and Quadcore have very spiky CPU usage on Task Manager.

The bottom line is I go from eight cores pegged on round 1, to the equivalent of five cores on round 2 and subsequent rounds.

I canít figure this out. Why should one machine continuously peg the processors, but the other two throttle back?

Everythingís on the same network.

Iíd appreciate any insights.
James White is offline   Reply With Quote
Old August 21st, 2008, 12:47 AM   #2
Trustee
 
Join Date: Mar 2006
Location: Boise, Idaho
Posts: 1,997
what output file format is your first render job? I seem to remember somethign about network rendering having different licensing schemes for MPEG2 that specifically disallows the use of multi core / CPU machines for network rendering jobs (ie jobs sent through the network render service as opposed to jobs kicked off via a full vegas instance).
Jason Robinson is offline   Reply With Quote
Old August 21st, 2008, 01:08 AM   #3
Tourist
 
Join Date: Aug 2008
Location: Minneapolis MN
Posts: 2
Hmm. Hadn't thought of that.

All the output render formats are wmv.

Tomorrow I'll try some different formats to see if that makes a difference.
James White is offline   Reply With Quote
Old December 16th, 2008, 11:38 AM   #4
Trustee
 
Join Date: Mar 2006
Location: Boise, Idaho
Posts: 1,997
Quote:
Originally Posted by James White View Post
Hmm. Hadn't thought of that.

All the output render formats are wmv.

Tomorrow I'll try some different formats to see if that makes a difference.
I've always had problems with more than 1 render slave machine, so when I need to, I just make sure all the media files are duplicated on my render machine, and then open up a full Vegas instance (same project file as on the edit machine obviously) then kick off a render that way.
Jason Robinson is offline   Reply
Reply

DV Info Net refers all where-to-buy and where-to-rent questions exclusively to these trusted full line dealers and rental houses...

Professional Video
(800) 833-4801
Portland, OR

B&H Photo Video
(866) 521-7381
New York, NY

Z.G.C.
(973) 335-4460
Mountain Lakes, NJ

Abel Cine Tech
(888) 700-4416
N.Y. NY & L.A. CA

Precision Camera
(800) 677-1023
Austin, TX

DV Info Net also encourages you to support local businesses and buy from an authorized dealer in your neighborhood.
  You are here: DV Info Net > Windows / PC Post Production Solutions > What Happens in Vegas...

Thread Tools Search this Thread
Search this Thread:

Advanced Search

 



Google
 

All times are GMT -6. The time now is 05:11 PM.


DV Info Net -- Real Names, Real People, Real Info!
1998-2017 The Digital Video Information Network