Memory limits may be exceeded when rendering hair with high poly growth objects как исправить - Исправление ошибок и поиск оптимальных решений проблем

Навигация: Главная страница/Система ejudge/Использование/Вердикты тестирования/Ошибка превышения лимита памяти

Английское название: Memory Limit Exceeded, ML

Ошибка диагностируется, если в процессе работы тестирующая программа потребила больше памяти, чем указано в ограничениях задачи. Обоснованность диагностирования этой ошибки вызывает дискуссии (см. далее).

Разные тестирующие системы подходят к ограничению памяти для работающей программы по-разному. В ejudge ограничение памяти реализуется с помощью установки ограничения на размер виртуального адресного пространства и размер стека (см. ulimit). Таким образом, тестируемая программа не может превысить установленные ограничения.

Диагностирование ошибки превышения ограничения по памяти в системе ejudge работает, толко если установлен патч к ядру Linux. Если патч не установлен, превышение ограничения по памяти будет диагностировано как ошибка времени выполнения. Кроме того, система ejudge позволяет отключить диагностирование данной ошибки даже если патч к ядру установлен.

Хотя диагностирование данной ошибки может быть полезно для участников для отладки их решений, в большистве ситуаций граница между ошибкой при выполнении программы и ошибкой превышения ограничения по памяти оказывается очень размытой.

Например, если превышен максимальный размер стека из-за того, что программа вошла в бесконечную рекурсию, то такая ситуация должна скорее рассматриваться как ошибка при выполнении программы. Но с другой стороны, если программа попыталась выделить слишком много памяти в стеке (например, из-за слишком большого локального массива), такая ситуация должна рассматриваться как превышение ограничения по памяти. Естественно, невозможно простым способом четко различить эти две ситуации.

С другой стороны, например, в языке C функция malloc возвращает NULL, если память выделить не удалось. Если тестируемая программа не проверяет результат функции malloc на NULL и получает ошибку доступа по нулевому указателю, то это типичная ошибка программиста и должна рассматриваться как ошибка при выполнении программы. И наоборот, программа может отлавливать ситуации, когда malloc возвращает NULL, и модифицировать свое поведение (например, почистив хеш-таблицу).

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Memory limits may be exceeded when rendering Hair

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Home› Adobe Substance

High poly mesh didn’t fit in GPU memory (and other issues)

I’m currently having some problems with Substance Painter I’ve not had before and they’re really confusing me. I’m not sure if this is dependent on the size and scale of the high poly mesh(es), but whenever I try to bake my AO, Thickness or Curvature, I keep getting an error saying ‘High poly mesh didn’t fit in GPU memory. To try again, disable the GPU raytracing option’. Now, sure, that would fix the error, but I want to understand why I’m getting this issue as other projects have always been fine.

Also, how does raytracing work in Substance Painter? I thought that was more dependent on a GPU that can handle it, such as an RTX card?

I’m guessing that the raytracing option has been a part of Substance Painter for some time now…? As I say, this error has never come up before. Turning it off might fix the error, but I find the AO, Thickness and Curvature bakes take much longer. I’ve tried monitoring the GPU, but I can’t see much activity. I’m using a GTX 1080, which has 8GB of VRAM. I’ve tried looking under Task Manager and with a hardware utility (though I may not be using the best ones) and I’ve not seen any activity on the GPU’s side. It’s hardly used any VRAM either. I’ve tried CPUID and HWiNFO64 and can’t say I’ve been able to find any benchmarking tool for the GPU. What info is there I haven’t seen change or anything.

Some of the other issues I keep getting involve using an FBX and an OBJ. With the FBX, I keep getting errors saying it failed to compute the bitangents and that it needs to recompute them. I tried taking my low poly into Maya and made sure to check all the Normals. They were all locked, so I unlocked them and reapplied any smoothing, either using Smooth Edges or Smooth/Hardened Edges. Not sure if they’re supposed to be locked again afterwards…? I export from both Maya and 3ds Max with the Tangents and Binormals options ticked, but that still hasn’t prevented the errors from coming up either. I tried asking on the Substance Painter Reddit forum and someone suggested I bake with OBJs instead. So I re-exported the low and high meshes out as OBJs, which has fixed that error, but now my material IDs don’t bake correctly. Even though I ticked the option to export materials, the error I get now says ‘failed to locate material, creating a new one’. I even tried ticking the option to create a material library file, but same problem. Plus, the file is ridiculously small at 4kb.

Finally, although it’s ticked by default, should I leave ‘Compute Tangent Space Per Fragment’ enabled? What does that do exactly? I looked up the documentation, but I’m still non the wiser. Is that related to setting up your Normals/Tangent Space Normals and Smoothing Groups manually? Or should it be kept enabled if the mesh is going into Unreal?

Thanks.

EDIT: I’ve just done a small test, and by exporting out as an FBX, and it recomputes the Normals and Bitangents. the Normal bake for one of my meshes has come out perfect. However, if I use an OBJ, and prevent it from recomputing them, but bake comes out bad. I’m lost and confused why that would be. The only thing that comes to mind, and correct me if I’m wrong here, is because I unlocked the Normals and set up the smoothing in Maya, exported it out, and then loaded it into 3ds Max. I’ve noticed that if I add an Edit Normal modifier after a mesh has come from another package, the Normals show as green. Resetting them turns them blue. Are the Normals/Bitangents being screwed up from one package to another, or is this nothing to worry about?

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r/blender

level 1

Your scene in to big, to many faces or your textures are more then card could handle. Make sure you are using wire frame or shaded view, don’t use cycles in active viewport cause that can eat a good chunk of memory. Goodluck👍

level 2

thank you for this, it actually made a huge difference, i can load up to 6gb of vram just by switching to wire frame

level 2

5 months ago and still helpful. Thanks!

level 2

it worked for me too. hope you get everything you want in life sir!

level 2

Thank you very much! It worked!

level 1

I don’t really know, but I guess the solution is getting more GPU memory, or what is the same in almost all cases, a more expensive graphics card

level 2

Not necessarily. A 3080 costs more than a 3060 but has 2 gb less vram. OP will need to optimize the scene so it uses less vram. Hi-res textures are often to blame here.

level 1

Edit >preferences> system >change opticx to cuda

level 1

If you have lots of copies of the same thing, use instances rather then duplicates. Also don’t use subsurf modifiers at high levels. If you have a high poly sculpt, you’re going to need to learn to bake the details into a normal, bump and/or displacement maps, retopologise the sculpt to much lower resolution then apply the baked textures to it.

level 1

Alternatives to buying a new GPU with more VRAM:

Optimize the scene by reducing resolution on textures HDRIs etc., reduce render setting values such a Light Bounces etc., experiment with Tile size.
Use a render farm. They can be very cost effective if not needed in a hurry and way cheaper than a new GPU if it’s just a one-off project that has this issue for you.

level 2

You can also render on layers and recombine in compositing

level 1

You can render layers, set texture limits under under settings, etc.

also, don’t have your viewport set to render mode that kills your vram.

level 1

· 9 mo. agoContest winner: 2021 January

Along with the other suggestions…

Try command line rendering — when you use blender’s render window you’re using vram to display the image. Command line rendering doesn’t, but you don’t get to see the render as it happens.

level 2

Ohhhh thank you will try this out

level 1

Restarting your pc can sometimes help, because memory can be used by some other stuff that just hasn’t been cleared.

level 2

Yes restarting also helps but in this case it seems like the scence. Is taking more memory

level 1

Two key addons for this are Polycount which allows you to see what objects are misbehaving, and Material Utilities which allows you to deduplicate materials. If you have materials with. 001. 002 etc suffixes, they are likely duplicates. Even if they’re identical in every way they still need their own chunk of VRAM. With high res textures this can rapidly cripple your scene.

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