Chaos Corona for Cinema 4D > [C4D] General Discussion
Corona for Apple Silicon M1?
BigAl3D:
One thing that makes these ARM chips faster in some ways, even when swapping between memory and the hard drive, is that the HD is a super-fast SSD and close by so you don't get as big of a hit as other systems with spinning drives. So if you have a 512 or 1 TB SSD, it's "almost" like having a ton of extra RAM (yes, I know RAM is usually faster). In the old days, people would partition large drives into smaller volumes for faster access or to keep one for cache files or swapping. One for applications, one for scratch, one for this, etc. Since today's drives are usually SSD, this might not matter too much anymore since this technique was to address the amount of time the drive head would take to search a massive drive to access items scattered all over.
I personally would like to keep working on Macs, but am a little nervous about Apple's issues with the scaling of the new chips. Fingers crossed that the M3 line will be a huge jump in power.
lamfadel:
The DDR4 memory on my iMac is 20Gb/s and the memory speed of the new m2/m1 max is 400Gb/s. 64 at 20 vs 32 at 400… will Corona run as fast with 32…?
frv:
Apart from slower you will also crash more with insufficient ram. I just made this image and it took about 125Gb of ram according to the app activity window. My system a Mac ultra with 128Gb and 2Tb is rather fast but since I tend to model vegetation without much thought everything is back to slow again as it was on my old iMac :-). The gravel in this image is all mesh by Arroway. No displacement.
If you are a smart modeller and put only vegetation where you need it and use displacement with care you could make the same image with 16Gb without having to swap memory. But a careful or smart model is also much more work.
BigAl3D:
In my experience, most 3D apps use the RAM for loading all the textures for faster access. Is that not how Corona works? Are you saying you have 125 GB of textures?
Nejc Kilar:
--- Quote from: BigAl3D on 2023-01-31, 17:03:43 ---In my experience, most 3D apps use the RAM for loading all the textures for faster access. Is that not how Corona works? Are you saying you have 125 GB of textures?
--- End quote ---
Hope I can help here by offering a super simplified answer :)
Corona (and any other renderer / software really) needs stuff to be in RAM so that when a ray travels through the scene and hits something it then "knows" what exactly is there and how its set up.
If your RAM is full then your SSD / HDD will act as an extended RAM so to speak - but because that hardware is slower in general it'll be orders of magnitude slower than accessing stuff from RAM. Hence why you can still render stuff when you run out of RAM but its really slow.
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