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  • Logic 8 and 9 CPU Overloads and Large VE Pro Templates

    Here's another "Why am I the only one having problems with this?" question. 

    18 GB, Logic 8 (or 9, it doesn't make much difference), 8-core 2.8 GHz, 10.6.2, latest VE Pro Beta. 

    I have a large VE Pro template loaded on the same computer as Logic, a template of around 5 GB. On paper, this is well within the range of VE Pro and Logic. About 8 GB remain free in a computer holding 18 GB total. 

    But CPU spikes and overloads come in tandem with this large load. As a song progresses, it becomes impossible to continue. I have to jettison VE Pro instruments and entire instances. That helps, but it's still pushing the CPU envelope. Space Designer seems a particular hog, so I delete those too. 

    1. Is this normal? Do we all face single-computer Logic CPU hits when VEP has larger loads? 

    2. Are there optimal settings to stop the overloads?

    I already have the buffer at 1024, the I/O safety buffer is on (in Logic 8), and the Buffer Process Range is as high as it can go. Live performance (playing live over already recorded tracks) is slow, and the first note is almost always lost. Even this I can tolerate if the song would just keep playing. 

    3. Does Logic take this same CPU hit in the meters if VE Pro is running off a separate computer on a network?

  • Hi

    Is it all the cpu that are spiking, I have only the 8th CPU almost on max at 1024 

    you may have a disk speed problem 

    run Bigtop software (in the developer folder on MAC OS 10, DVD)


    MacBook Pro M3 MAX 128 GB 8TB - 2 x 48" - 1 x 27" screen --- Logic Pro --- Mir Pro 3D Dolby Atmos --- Most of the VI libs, a few Synch... libs --- Quite a few Kontakt libs --- CS80 fanatic
  • Thanks Cyril. Actually, it's the sixth core that takes the big hit. The seventh core leaps to the top when I start playing live, and the eighth core is without any activity. I think it is. Like you, the other cores look reasonable, perhaps fifty percent on average. 

    I am inclined to think it is CPU. Last night when I muted the violins' dedicated VSL Convolution Reverb, things improved. But I can still make it stall by playing live over an already large passage. It just seems to me that it isn't THAT large, compared to the numbers that VSL has tested. 

    I loaded an old X Code disk and found no Big Top. Is it on a specific disk dating back into the early OS 10's? 

  • Are you using Aux tracks for the incoming audio from VE? Logic has some weird threading that causes all software instruments with multiple outputs to be processed by the last core. Removing the multiple outputs, simply feeding stereo back - improves the situation. That means you will have to do more mixing in VE Pro though.

  • HI

    Bigtop is in the apps of the developer disk

    If you want I can send it to you, send me a PM with your email

    I have report  to Apple's Logic guru the 8th CPU problem, but he did not answer back !!!

    Reading  10.6.3 notes it looks like there is a fix for this this, if not I will write to Steve Jobs

    For me there is hardly any activity on the other 7 cores



    MacBook Pro M3 MAX 128 GB 8TB - 2 x 48" - 1 x 27" screen --- Logic Pro --- Mir Pro 3D Dolby Atmos --- Most of the VI libs, a few Synch... libs --- Quite a few Kontakt libs --- CS80 fanatic