Hi there,
my Specs:
MacBook Pro 10.15.7
2,4Ghz 8 Core Intel Core i9
Memory:32GB 2400 Mhz DDR4
Graphics: Radeon Pro Vega 20 4GB
Everytime I use MD11 my Macbook-fan starts to blow to cool down the CPU. Even when the program is idle for 15 minutes. Also the most simple things, like making a rectangle cause the CPU to blow away. The Activity Monitor shows that MD uses more than 40% CPU power. Thats a lot. When I use Photoshop or Illustrator, everything is fine and no heavy CPU usage.
Do you have some (preference) suggestions?
thnx
Jur Kosterbok
MD is a realtime cloth collision simulator at it's core, this uses the CPU (when you task the CPU simulation) with that task. There are 3 simulation modes GPU for preliminary layout drafting and assembly sewing work > then CPU normal simulation > then a final CPU beauty pass simulation mode at high quality.
The final simulation quality is very intensive on your CPU as it is computing vertex collision across the entire cloth in contact with your avatar and props. This is state of the art technology and maths is generally sequential for cloth collision , only a certain degree of tasks can be distributed in parallel these are often just the administration tasks to do with the simulation - the core simulation is going to consume a lot of CPU resources as it crunches the maths out, this is why MD specify a high GHz clock speed for you CPU as this is a sequential task most of the time the only way to speed the processing across cores is faster clock speed, not necessarily how many cores you have nor how big your graphics card is. So unlike graphics programs and render programs (which can be distributed across cores (CPU & GPU) more easily you cannot compare graphics processing with cloth simulation they are totally different maths problems. So in that respect it's not a good comparison just like apples are not oranges.
Hope that puts your mind at ease that this is how it works. State of the art, best in the world cloth sim processing is still hard yakka for your CPU & GPU.
You can check (in the user settings how many cpu cores you assign to the app, so maybe check out of you have enough set up as your default setting. If you are running a turbo CPU (clock speed) yes it is likely going to ramp up as the simulation kicks in, however when you are drafting maybe make sure you are not working at too fine a mesh distance, do your drafting and assembly at 20mm particle distance and make all your edits on the draped and assembled garment a that resolution. Then when you are happy you have the design finished dial the mesh particle distance down when you are about to do the final garment pose, and only then, that should reduce the strain on your CPU as you work.
Your computer spec points to a low GHZ clock speed on your main CPU processor hardware (2.4 GHz , however this is likely turbo charged to kick in and run at higher clock speeds 4.0+Ghz which is about the operational speed for cloth sim). What this means is your CPU fan on the turbo will kick in as the cloth sim maths task gets intensive, you can switch to GPU simulation when drafting and generally sewing which should lessen that effect on your hardware, however laptops due to their thin construction need fans to cool down both the GPU and CPU as they work hard - as cloth sim is at the hard end of maths computational resources - your hardware is going to need to cool down most of the time. For example, when I were in Australia where daily summer temps could hit 40+ C at room temp I had to sit my laptop on a cooling stand (with additional fans) just to do simple simulation work - as it was simply a physics problem to do with efficiency. You can get temperature software apps to install on systems that alert you to your laptops temperature, I use that all the time just to be sure I don't fry my chipset. And I regularly take the CPU off and ensure it has a good layer of graphite heat conducting grease on it's contact surface to the heat exchange .... (on my desk top workstation tower). So yes if you push your hardware for cloth simulation consistently you need to factor in knowing how to maintain your hardware. Dust in your laptop vents on both the casing and the GPU fins is another major issue for non apple hardware (I am a product designer and have made these products) so you need to make sure you clean out any dust obstructions using a suitable vac, and that you do that regularly or don't sit your laptop on any obstructing surfaces where it cools. So good heat dissipation for laptops is a consideration you need to be aware of to maintain your hardware's life span.
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