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jjankowiak1-Visitor
1-Visitor
September 29, 2015
Question

Order Independent Transparency and memory issues

  • September 29, 2015
  • 3 replies
  • 6090 views

Recently updated to M090 of Creo 2.0 and discovered that order independent transparency works with NVidia cards. This is awesome - performance is more than 10x what it was. Problem now is memory issues. Seemingly random crashes with the message "An application has requested more GPU memory than is available on the system".

Is this a known issue that is resolved in a later spin or anyone have any fixes? I'm using a GTX 570 with 1280mb of GDDR5.


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    3 replies

    K
    KenFarley21-Topaz II
    21-Topaz II
    September 29, 2015

    General question. Why update to M090 when the current release is M180? I don't know if there are any particular enhancements that relate to graphics, but that is a pretty old release. I seem to recall having some odd behavior around the time those versions were out...

    J
    jjankowiak1-VisitorAuthor
    1-Visitor
    September 29, 2015

    Kenneth,

      Yeah....M090 is the last spin we got before maintenance expired

    S
    23-Emerald III
    StephenW23-Emerald III
    23-Emerald III
    September 29, 2015

    I turned off order independent transparency shortly after enabling it. Seemed to cause way too many crashes. Haven't tried it since.

    J
    jjankowiak1-VisitorAuthor
    1-Visitor
    September 29, 2015

    Stephen,

      I can't ignore the performance gains I've seen with OIT. Makes working in a large transparent assembly absolutely seemless and smooth. I need to figure this out.

    J
    JonathanHodgson13-Aquamarine
    13-Aquamarine
    September 30, 2015

    Where is the option set - with Creo, or within the Nvidia Control Panel?

    B
    BillChapman13-Aquamarine
    13-Aquamarine
    September 29, 2015

    OIT needs a graphics card that supports Open GL 4+.  I believe the GTX is a gaming card, and you need a Quadro Series card to get the Open GL.

    J
    jjankowiak1-VisitorAuthor
    1-Visitor
    September 29, 2015

    Bill,

      Yes, it is a gaming card. I've always used gaming cards, as they are 1/4 the price of the comparable Quadro card. Have had several Quadro cards over the last 17 years and ran benchmarks against their gaming equivalents. Have really never seen the performance difference to justify the major cost difference - possibly until now. Honestly, the performance of  this card is still awesome - except in transparent mode. That is until OIT option came along....Now it's awesome all around - until it crashes a few times a day. I'm currently using it, but I've had to increased my "save" frequency. Can't predict what will cause or when it will go out of memory. This is the most frustrating part.

    This is why I'm trying to see if it's an amount of memory issue, GTX vs.Quadro driver/architecture issue, or a newer spin of Creo issue.

    I
    Inoram14-Alexandrite
    14-Alexandrite
    September 29, 2015

    This is why I'm trying to see if it's an amount of memory issue, GTX vs.Quadro driver/architecture issue, or a newer spin of Creo issue.

    From what I have seen, of those 3 things I am leaning towards amount of memory. I run a GTX card, but running M180 currently, but I have run M90 and I don't remember an OIT issue. I also don't remember which build added OIT either.

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