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  4. [SOLVED] VEP 5 CPU Usage Cycles 0%-10% Every 2 Seconds with Audio Dropouts

  • [SOLVED] VEP 5 CPU Usage Cycles 0%-10% Every 2 Seconds with Audio Dropouts

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    I am having a problem trying to get VEP 5 working properly on my Mac Pro master-slave system with Logic Pro X (10.0.5) in OSX Mountain Lion (10.8.5). The moment I press "Connect" on the VEP Server window on the Master computer, I see the CPU usage (in bottom right-hand corner) of VEP Server window, on the Slave computer, start quickly cycling from CPU usage 0% to approximately 10% and back down every 1-2 seconds. This is with no channels or plugins added on the VEP Server slave computer except for the default Ch. 1 Master Bus.

    If I add a channel and a plugin instrument (eg Omnisphere 1.5.8d 64-bit) the audio drops out exactly in sync with the CPU usage dropping to 0% and the audio comes back exactly in sync with CPU usage rising back to approximately 10%. This happens whether I use the 64-bit, or 32-bit, VEP servers on master & slave computers.

    Please advise. My VEP 5 master-slave setup is as follows:

    1) VEP 5 (OSX) build 5.2.12844 (Dec 6, 2013)

    2) Wifi off on master & slave computers

    3) Static IP set manually on master & slave computers

    4) LAN working properly. Screen sharing functions between master & slave. Different CAT-5 ethernet cables don't fix problem.

    5) Master computer:

    2012 Mac Pro 3.33 6-core

    OSX Mountain Lion 10.8.5

    Samsung SSD boot drive

    24 Gb RAM

    VEP server 64-bit

    Prefs: 2 threads per instance

    Latency: 2 buffers

    6) Slave computer

    2012 Mac Pro 3.33 6-core

    OSX Mountain Lion 10.8.5

    Western Digital 7200 rpm Caviar Black boot drive

    48 Gb RAM

    VEP server 64-bit

    Prefs: 2 threads per instance

    Engine: "started"

    Rate: 44100

    Latency: 1024

    outputs: 2

    Inputs: 32
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    It probably won't help, since I'm on PCs. I had exactly the same issue, and it eventually turned out that my static IPs hadn't stuck. When I assigned them I used the same address that they had been dynamically assigned, since I assumed they were valid addresses. These addresses did show up in the details page for the connection. But I think each machine saw itself already on the network, and refused to take the address. It was only by chance that I went back into the connection properties, and discovered that the addresses had vanished. And every time I tried assigning them, then left the properties window, they vanished again.

    Meanwhile my connection was actually working. Dynamic assignment was turned off, and the addresses I'd assigned continued to appear in the network details, though not in the setup properties; the machines pinged each other fine, and both said they had a gigabit connection. I'm guessing that every once in a while the machines wondered why they couldn't find a static address, and also weren't being given a dynamic one, and my audio cut out. And CPU useage cycled from 0% up to about 8% with just VEPro server loaded, then up to 30% when I loaded an instrument, whether I played a note or not.
  • civilization 3C
    civilization 3C
    last edited
    last edited

    @cinealta said:

     Different CAT-5 ethernet cables don't fix problem.

    use a CAT6 cable

    that may not be the issue, but I believe the issue is connectivity-related,
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    Cat 6a cable solved the problem. Thanks for the tip!