topic Sweep Calculation ridiculously slow in Fusion Support Forum

Sweep Calculation ridiculously slow

bschmu — Wed, 07 Oct 2020 18:51:43 GMT

I have a sweep which I didn't think was too complicated (path is 26 arcs) but takes over an hour to calculate out. Is this issue software or hardware related? In task manager it looks like fusion is only using 16% cpu and 1gb ram so I'm guessing its software related.

MS Studio

i7-6820HQ 2.7ghz

16gb ram

Geforce gtx 965M

Re: Sweep Calculation ridiculously slow

jeff_strater — Wed, 07 Oct 2020 19:10:43 GMT

share the design here, please. Hard to say just from the description. Regarding the CPU utilization, many geometry algorithms are inherently single-threaded. So, if you have a 4 core machine, the maximum CPU usage would be 25%.

Re: Sweep Calculation ridiculously slow

bschmu — Wed, 07 Oct 2020 19:57:08 GMT

unfortunately I am unable to share my design. I'll try to duplicate it in a way that I can share

Re: Sweep Calculation ridiculously slow

bschmu — Wed, 07 Oct 2020 23:00:41 GMT

Here's the link https://a360.co/3iEBpgs

Re: Sweep Calculation ridiculously slow

bschmu — Tue, 13 Oct 2020 15:51:48 GMT

@jeff_strater Were you able to take a look?

Re: Sweep Calculation ridiculously slow

jeff_strater — Wed, 14 Oct 2020 00:35:40 GMT

thank you for the reminder, @bschmu - this had fallen through the cracks in my to-do list. I did take a look today. It does seem like this is pretty slow for a sweep that is not all that complex.

I wonder about these curve segments:

which come from these faces:

but, that is just a theory at this point. I will need to check with the modeling kernel team to see if there is something else going on here.

Re: Sweep Calculation ridiculously slow

jeff_strater — Thu, 15 Oct 2020 20:46:47 GMT

we sent this off to the modeling so, what is this team to investigate. It seems to be a real problem, and we cannot find any problem with your design workflow here, at least so far. Will update when we know something new.

Re: Sweep Calculation ridiculously slow

bschmu — Fri, 16 Oct 2020 16:18:03 GMT

Thanks for looking into this! Nice to know I don't need a new computer 🙂

Re: Sweep Calculation ridiculously slow

gulzar.dhanani — Fri, 03 Jun 2022 10:43:09 GMT

Hello @bschmu,

Are you still facing this issue with Compute All? If yes, then please try the workaround mentioned below :

Edit the existing sweep feature through UI Timeline and click OK
Now do a compute all, you can see the compute All is a lot faster
Please refer to the steps mentioned below in the recording which shows how to the edit sweep feature through UI timeline.

Please let us know if you have any more queries?

Re: Sweep Calculation ridiculously slow

TrippyLighting — Fri, 03 Jun 2022 11:30:54 GMT

@bschmu did you build this natively in Fusion 360 including all sketches?

Re: Sweep Calculation ridiculously slow

bschmu — Fri, 03 Jun 2022 15:00:45 GMT

Blast from the past! If I remember correctly the design started in F360 with an imported 2d sketch dxf and built from there, completely in F360. As mentioned in msg 6 above, that specific sketch was derived from faces.

Either way that project completed and I haven't taken a look at it in over a year so I can't say if the problem still exists and I don't remember what my solution was.