SourceForge has been redesigned. Learn more.
Close

#69 Crashes on large renders with multi-threading

open
nobody
Renderer (19)
5
2008-04-20
2008-04-20
Peter F
No

I recently bought a quad core pc and have started doing renders with all four cores.

On small renders (couple of minutes) it renders without a problem. But on large renders (more than 5 hrs) it crashes.
It starts the render fine and even completes the render but after it does so it crashes. I.e it freezes on the screen saying it's got 0 seconds remaining and doesn't ever actually save the render and finish the process.
If you try press the "stop" or "pause" button at this point it says there's a memory access error. They only way to access is to end the task through taskman

Details:
flam3-2.7.11, Apophysis 2.07, Windows XP, Phenom 9600, Corsair 8500 C5D 4GB, Asus M3A32-MVP Deluxe

Discussion

  • Peter Sdobnov

    Peter Sdobnov - 2008-07-18

    Logged In: YES
    user_id=1332186
    Originator: NO

    I have no 4-core CPU to test it, but it works quite well on my Core 2 Duo.

    btw,
    > Details:
    > flam3-2.7.11,
    so, is it a flam3 problem or Apophysis problem? :-\

     
  • John Brennan

    John Brennan - 2008-08-23

    Logged In: YES
    user_id=2191112
    Originator: NO

    Yes, I get the same multicore problem, but with 2.08 beta. I've had better success with 2.07 previously, but unfortunately, it's expired. I'm running a dual boot system - XP 32 bit/Vista Ultimate 64 bit. I've been getting hangs on both sides. Out of about 15 high res renders, I've succeeded with only 5. Some were done in Vista and maybe 2 on XP side. In Vista, it craps out in about the last hundredths of a second. In XP, it's crapped out at various times during the render. Usually, it's either access violations or thread errors. Doesn't matter if it's single pass or multi-pass renders, it's crapped out on both. This concerns Apophysis 2.08 beta only. Nothing else (flam3, etc.) is run in conjunction.

    Details:
    Windows XP SP3 32 bit/Vista Ultimate SP1 64 bit, Intel Q6600, 8GB G.Skill RAM, Gigabyte P35C-DS3R, BFG Nvidia 8800 GT, No overclocking

     
  • Sven Geier

    Sven Geier - 2009-12-18

    I came here looking for the exact same thing: on my core2 6700, 2.66GHz, (2 CPUs) with Apo 2.09 I seem unable to do long renders. It never makes it through the first image when I use the batch render script, with the new "render all" function it made it through one or two flames in a file, then on the third one it finished but never wrote the result to disk. The last two lines in the window were

    10:55:54 PM : Rendering...
    12:54:05 AM : Creating image with quality = 10000.01

    In the status bar it says "Remaining 00:00:00:00". CPU usage dropped from ~99% during the render to 50% (i.e. it yielded one core, but is still doing something in the other one). There's no "Saving Image" line. The image was never written.

    This needs to be looked into.

     

Log in to post a comment.