View Full Version : Maya, rendering takes long, please teach me~
Kaorur32 05-08-2003, 07:55 PM Hello everybody, it's been a pleasure to meet all you great people and watch the excellent works posted here, I SO envy you guys who are able to archieve this stage!
I am personally trying die hard learning Maya for last couple monthes, and hope the experts here can be willing to be my best teachers and give me some hints.
I am currently working on a girl model, and I am making her head and body parts seperately in two files. The PROBLEM is:
When I render the head file with alot of NURBS hair stripes, projection face texture, it Renders without problem. However, when I use the same setting and render the body parts file, whenever I click RENDER botton, the "dark blue screen" that has yellow words below says "rendering" does not come up immediatly. It seems the PC is cauculating something and After a good 15 to 20 seconds, the "Blue screen" eventually come up THEN it Starts to render.
From what I see in the Box, the actual render time isn't long at all (around 3 to 5 seconds). Why does it take SO long BEFORE it starts render? Is this normal? Or is there a way I can fix it by checking or debuging through what file?
The strange thing is, my body parts haven't even been textured yet, it's all grey; I also tried my best to Rebuild the nurb body parts into lower definition. For me, there is no obvious reason that the body parts takes longer to render than the head file.
(My body is quite simple, not alot detail yet, either)
Would you experts please share some experience about what to delete (history?) and what to modify or check, BEFORE you render the scene? This will be Very helpful for me in a long way, and I can't imagine how long it's going to take once I finished texturing the body parts and adding more detail....Thank you very much!
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Jozvex
05-09-2003, 12:03 AM
Two things that you can do to help solve rendering problems are:
1. Go to File > Optimize Scene Size
That deletes all the unnecessary nodes in your scene, like shaders, groups, other nodes etc.
2. If you open up the render window, theres a button in its toolbar that looks like a blue sphere with a speech bubble on it. That's the render diagnostic button. If you press that it will tell you about how you can optimize some parts of your scene.
Like it might say "sphere2 has very high tessellation, turn it down to improve render speed" or something like that.
Number 2 will only work for the Maya renderer.
gmask
05-09-2003, 12:04 AM
How much ram does your system have? HWat ar your system specs?
Kaorur32
05-09-2003, 01:15 AM
Thanks alot for your reply, I have tried to optimize my scene and still, the render time for This particular file is very slow.
I tried to test it in another way. I open this file of the body parts, and delete EVERYTHING (arms legs hands joints...)and leave only the T-Shirt. Now, there's Only a NURBS T-shirt (default grey lambert) in my scene. I Save As it to a new file called TSHIRT.
Now I open a empty new file, create a NURB sphere and render it, the scene completed render within 1 second. I then modify the sphere's vertices to make it a lot more complecated in shape. Render again, still completed in 1 second. Now I delete the sphere, import the TShirt I created before, Guess what, EVEN with only the Tshirt in the scene, it takes 15 more seconds for the PC to warm-up before it even shows the blue screen to render.
I tested this with the arms and legs also, the same result. There Must be something wrong with this body parts file...oh god...I crafted those body parts for SO long that I can't give up it!! Ah....
:surprised
My PC isn't that bad at all, I render other files with alot of texture and details in acceptable amount of time, and the main problem is that once I click render scene botton, the Blue screen always shows up immediatly (and after that, the render starts...)
However, for this file, it just has an extra waiting period before it starts render...is it something related to Maya FUR rendering? Because I look in the script it says Maya Fur rendering....but I have no knowledge with Maya Fur yet, and never used it anywhere in my scene....it's just plain NURB sphere crafted into a T-Shirt. So for the arms, hand, and leg. Very simple shape...
gmask
05-09-2003, 01:24 AM
>>>However, for this file, it just has an extra waiting period before it starts render...is it something related to Maya FUR rendering? Because I look in the script it says Maya Fur rendering....but I have no knowledge with Maya Fur yet, and never used it anywhere in my scene....it's just plain NURB sphere crafted into a T-Shirt. So for the arms, hand, and leg. Very simple shape...
It's true that if you had Fur there would be a very logn waiting period before rendering starting.
However depending on the density of isoparms in the NURBs tshirt and what tesselation values you have given it there may be a long delay while it is being converted to polygons for the renderer.
Kaorur32
05-09-2003, 01:33 AM
I am really sorry to ask such basic questions...and thank you really for taking your time helping me. I just examed my Render dialog...here is what it says, can you please indicate me what to do to fix it? (there really seems to be alot of problem...>_<)
Oh my god...where are those Blinn and how do I delete them or port them...I don't see any textures made in the HyperShade...there's only the 3 default ones, I must messed up!!
Starting diagnostics...
Known Problems/Limitations
--------------------------
- output to GIF/EPS/JPEG formats will result in the mask channel not being written.
Warnings
--------
- blinn1SG has no port connected. This can be dangerous for rendering.
- heady_lambert2SG has no port connected. This can be dangerous for rendering.
- lambert2SG has no port connected. This can be dangerous for rendering.
- lambert3SG has no port connected. This can be dangerous for rendering.
- lambert4SG has no port connected. This can be dangerous for rendering.
- lambert5SG has no port connected. This can be dangerous for rendering.
- lambert6SG has no port connected. This can be dangerous for rendering.
- lambert7SG has no port connected. This can be dangerous for rendering.
- lambert8SG has no port connected. This can be dangerous for rendering.
- withface_lambert2SG has no port connected. This can be dangerous for rendering.
- withface_lambert3SG has no port connected. This can be dangerous for rendering.
- withface_lambert4SG has no port connected. This can be dangerous for rendering.
- withface_lambert5SG has no port connected. This can be dangerous for rendering.
- withface_lambert6SG has no port connected. This can be dangerous for rendering.
- withface_lambert7SG has no port connected. This can be dangerous for rendering.
- left_hand|subdTessShape1Orig has no shading group associated with it. This means that it will not be rendered. Please assign it to a shading group.
Speed/Memory Implications
-------------------------
- left_shoe|left_shoe3Shape has a high tessellation count: 20736.
It will be worthwhile to reduce the tessellation amount.
- right_shoe|left_shoe3Shape has a high tessellation count: 20736.
It will be worthwhile to reduce the tessellation amount.
Diagnostic Completed...
gmask
05-09-2003, 01:43 AM
Originally posted by Kaorur32
I am really sorry to ask such basic questions...and thank you really for taking your time helping me. I just examed my Render dialog...here is what it says, can you please indicate me what to do to fix it? (there really seems to be alot of problem...>_<)
Oh my god...where are those Blinn and how do I delete them or port them...I don't see any textures made in the HyperShade...there's only the 3 default ones, I must messed up!!
Er.. that doesn't really tell me much.. I pretty much ignore the warnings about tessellation because I sent them as high as I feel I need. I woul dhave to see the actuall suurfaces that you are having problems with and know what tesselation valuesyou gave them.
I again I will ask how much ram does your system have? Since Maya can use quite a bit while open and then the render needs more when it's running that you are going into swap and that is the slow down.
I'm not familair with the port errors on those shaders.. If those shaders are not assigned to anything then optimize scene file should delete them.
You could manually select them and delete them IE `delete blinn1SG`
Are you rendering to GIF/EPS/JPEG and if so why?
Kaorur32
05-09-2003, 09:08 AM
I just found out that I have 256 MB of RAM, is it too small?
I do not have any friends who works with animation too, therefore it's really a great experience to know so many people here who are of the same interest. May I ask some general question such as, how long does it take for You guys to render a simple scene? Cuase I know nothing about it except my own rendering time, thus if I know even you guys take 1 minute to render a simple scene, then it's nothing strange for me to take up to 1.5 or 2 minutes to do the same. :bounce: Should (can) I post a model of mine and we can test rendering it together?
gmask
05-09-2003, 05:53 PM
>>I just found out that I have 256 MB of RAM, is it too small?
Yeah that's not very much so I imagine that when you start to try to render the whole character that thing swill get much slower witht he program open and the render going. You need to upgrade to at least 512mb.. I have 2GB myself.
Watch the memory usage in the task manager to get an idea of how miuch ram is being used and when you go into virtual memory usage.
What processor/s do you have?
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