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Will more ram speed up toolpath nesting?


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Hi,

We are changing our process to use toolpath nesting to nest entire shipsets by material,

(100-200 parts | 2000 operations)

We are using toolpath nesting and it's taking about 4 hours to generate with our 32 gb ram pc's with quadro on a dell workstation)

Would increasing the ram lower the processing time drastically, the importing toolpaths is the bottleneck.

Any suggestions are welcome.

Thanks!

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It might, but it might not.  You should monitor how much RAM your operations are using, and if the system is paging to disk.  IIRC there is a way to set Mastercam to use a larger portion of your memory before paging to disk.

In my previous job of 5+ years ago, I was running a lot of memory intensive stock models, and I found that if they started paging to disk (at 32GB) that was the transition between a 15 minute regen and a multi-hour regen.

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1 minute ago, byte me said:

Is that the one where you change the priority to high?

That can change core usage priority, which can help a little, but not what I was thinking of.  Perhaps one of the others here can remember how to change the amount of memory Mastercam will use.  I think it's safe to say though that if the system is paging to disk while Mastercam is crunching, adding RAM will help.

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1 minute ago, Matthew Hajicek - Conventus said:

That can change core usage priority, which can help a little, but not what I was thinking of.  Perhaps one of the others here can remember how to change the amount of memory Mastercam will use.  I think it's safe to say though that if the system is paging to disk while Mastercam is crunching, adding RAM will help.

I'll take a look when I get home, thanks Matt.

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SSD has a great effect on speed. NVMe drives have a tremendous effect.

On my rig I don't use a PageFile. I've got 64GB of RAM.

When I've got multi-thread toolpaths regenning, I set them to High Processing in the Multi-Threading manager...

If you want, I can run a regen on your file to compare speed.

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Never set that to 100% in the memory buffering. You are not allowing windows enough resources to do work correctly and can create the opposite effect on Mastercam. I keep mine about 85% and right now that is 112gb of memory for Mastercam to use on my system. Look to the new M2 drives from Samsung and run a Raid setup to make it even faster. I am running a laptop using 3 of the 4 M2 posts and soon as things get better will be adding a 4th m2 drive to the system to replace the main 1TB Samsumg 970 Pro drive with the 1TB 980 Pro Drive. By that time should be released.

980 Pro Specs:

Read/write speeds up to 6,400MB/s

970 Pro Specs:

Read/write speeds up to 3,500 MB/s

 

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22 hours ago, Leon82 said:

I would think a processor that can run the most threads. Is nesting a multi-threading type operation?

I don't know? I would certainly hope so, but I'm not so sure since the toolpaths it is combining are not.

3 hours ago, crazy^millman said:

Never set that to 100% in the memory buffering. You are not allowing windows enough resources to do work correctly and can create the opposite effect on Mastercam. I keep mine about 85% and right now that is 112gb of memory for Mastercam to use on my system. Look to the new M2 drives from Samsung and run a Raid setup to make it even faster.

Have you tested this?

I was reading bilbs comment that it doesn't make much difference, and Mastercam is not using much memory according to the task manager.

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17 hours ago, cncappsjames said:

When I've got multi-thread toolpaths regenning, I set them to High Processing in the Multi-Threading manager...

I do that for nesting anyway, like I stated above I'm not sure of its using more than one core.

1 minute ago, crazy^millman said:

Yes I did and found Mastercam was more stable and processed toolpaths faster. That was X9 and have not seen a reason to change it since it has worked well like this.

Thanks, I'll look into it..

18 hours ago, cncappsjames said:

 

If you want, I can run a regen on your file to compare speed

I would like that, but ITAR.

It's all the components of each material for each aircraft .

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Maybe I can throw together a sample thats similar, appreciate the help guys!!

18 hours ago, cncappsjames said:

SSD has a great effect on speed. NVMe drives have a tremendous effect.

Ya we have the other kind.  *sad face&

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1 minute ago, Tim Johnson said:

Are you nesting the same part or an assembly of parts? If they're the same parts you may be able to use subprograms to lessen the crunch time.

Hi Tim,

It's an assembly of unique parts.

52 minutes ago, Günther Massimo - GMCCS said:

If you have plenty of RAM and not a SSD, you could try to use a RAMDisc and map pagefile.sys and %temp%\Mastercam to it.

 

Hi Gunther, that's a good idea, I will investigate that option, thanks!!

 

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3 hours ago, Leon82 said:

What does nesting actually do?

Nesting takes toolpaths from multiple programs and combines them into a single program of a specified area likee 4 feet by 8 feet to fit on a router table.

The toolpaths are positioned to optimize material effiency, an ascending or descending tool numbering system eliminates unnecessary toolchanges.

If you have ever used solid dissassemble and geometry nesting, it is very similar.

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3 hours ago, Leon82 said:

What does nesting actually do?

Allows you to take 2D parts and arrange them on  sheet the most optimized way without having to do it part by part piece by piece. The software looks for the best layout using certain parameters you give it. One part like suggested make a sub program and use G68 mapping if they need to rotate if unique parts then good old fashion brute force is your only option. 

Peter went over it better about the tools and other things that are a benefit. 

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7 minutes ago, crazy^millman said:

Allows you to take 2D parts and arrange them on  sheet the most optimized way without having to do it part by part piece by piece. The software looks for the best layout using certain parameters you give it. One part like suggested make a sub program and use G68 mapping if they need to rotate if unique parts then good old fashion brute force is your only option. 

Peter went over it better about the tools and other things that are a benefit. 

I see. We had a job sort of like that except the customer made an actual nesting blueprint based on the CTE of the test coupons that were taken from it.

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