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Old 05-25-2017, 10:46 AM   #1
anorganik
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Default Rendering Slow on WIN7 64bit with i7 12Cores

Hello,

Why is that if i offline render any reaper project, it's not using my CPU's full capabilites ? Please check the attached screenshot about the Performance Meter.

https://goo.gl/photos/a8wXgQhfCV53pZJ48

Could you tell me how can i make the rendering process faster with giving more work to each of the threads/cores?
Thanks,
Gabor
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File Type: png CPU USAGE LOW while RENDERING with REAPER2.png (47.1 KB, 228 views)
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Old 05-25-2017, 11:12 AM   #2
jrk
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what kind of drive is that you're rendering to?
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Old 05-25-2017, 03:47 PM   #3
dug dog
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Just a guess here (and maybe a bad one) but do you have "Full speed offline" selected in the render to file dialogue?

Last edited by dug dog; 05-25-2017 at 03:48 PM. Reason: punctuation
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Old 05-26-2017, 09:37 AM   #4
anorganik
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I render to SSD and of course with Full Speed Offline mode...
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Old 05-26-2017, 10:49 AM   #5
jrk
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They were pretty obvious questions, but, you know. Some other obvious questions might be "has it always been this way?", "what reaper version?", "have you tried disabling some plugins in case one of them is causing this strange issue?" "What about anticipative FX" and so on. :-)
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Old 05-26-2017, 06:36 PM   #6
mhuss
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I've had the same problem forever (lots of idle CPU cycles while rendering slowly). I believe the problem is time-sucking plugs, particularly when chained together. All reverbs are suspect, retentive sims of analog hardware, linear phase EQs, etc.

If you have (e.g.) three plugs on a channel, the second one can't start until the first one does it thing, and so on. For folder tracks, multiply this by all the tracks in the folder!

I don't know if VST2 supports multi-threading, but if does, few plugs seems to take advantage of that feature. So, you end up with a number of idle cores waiting around for the thread running the pokiest plug to finish. Any track with a high PDC # in Perf. Meter is a suspect. (My Master track typically runs in the 4000s :-\)
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Old 05-27-2017, 02:10 AM   #7
Ulf3000
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12 cores or 6 cores with 12 threads ?

to see an ultimate speedboost (aside from 3d graphics raytracing rendering) you should disable hyperthreading in the bios , and then see how your computer is almost 2x as fast compared to hyperthreading enabled ....
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Old 05-27-2017, 02:55 AM   #8
heda
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In general, faster cores are preferred to many cores in the DAW world.
Try again disabling plugins in the master track. Try moving those plugins to a bus before master track and no plugins in master track.
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Old 05-27-2017, 06:02 AM   #9
jrk
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Quote:
Originally Posted by heda View Post
Try again disabling plugins in the master track.
This is very sound advice. Does it really make a whole lot of difference putting them on another "pseudo-master" bus?
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