Compute Failed ?

[Anonymous]

It would be nice if there was more info, it highlights which sketch but not exactly where the problem is, unless I'm missing something ?

I don't see why the problem could not be identified.

[PhilProcarioJr]

@Anonymous

Could you share the file or give us more info?

[Anonymous]

In the timeline highlighted in yellow is something with a problem, so inspecting the error shows a message saying compute failed. But in no way does it let me know where exactly the problem is, no indication within e.g. a sketch what does not compute. All it says is to inspect it.

Edit: I have now encountered a different error on a different sketch, however this time it's there are lines showing in "yellow" which is making more sense. This does however raise another question if I may ... It's lines / sketch curves projected from geometry but not sure how to fix it, is there a way to re-project the lines ?

[PhilProcarioJr]

@Anonymous

Did you delete the geometry you projected from?

[Anonymous]

No.

[jeff_strater]

Hi @Anonymous,

You have pointed out an admitted weakness in Fusion, and one we are looking at trying to improve:  Helping when there are errors in the design, especially for projected sketch geometry.  Today, there is no good way to re-project a failed projection.  You need to just delete the projected sketch geometry, and project a new one, then hook up any constraints, dimensions, etc.  We'd like to improve this with more diagnostics about where the original geometry you projected from is, and more information about what went wrong, and a way to repair without re-creating a lot of your sketch.  It's on our list, but we haven't quite gotten to it yet.  Thanks for the reminder.

Jeff

[Anonymous]

Thanks.

[Anonymous]

I am having a similar problem. Am I interpreting this to mean that when this happens, you bascially have to re-draw most of the sketch. So far I have gone back several steps and cannot get it to acknowledge several lines and connections. here is the file, you can see where the 'cheek just won't compute and the sketch then fails to project. As you can see in the file, this is the same drawing that was used to create 2 other bodies in the file. thanks!

http://a360.co/2hgled2

[Anonymous]

 I am facing a similar issue. I made the entire sketch once again but i cant add a pipe assembly in the bearings. Earlier yesterday it worked out but today it is not working eving after creating both the components once again.

it is showint the following error- Warning: Rev8
Compute Failed

Link of the table assembly - http://a360.co/2rDeDzT

link to pipe assembly ( component i need to add bwt two bearings ) - http://a360.co/2slOv9V

[Anonymous]

Just want to echo other's comments after running across this issue on numerous occasions and taking the time to search the forums. I have a fairly complicated geometry to project and every time I make a small change, it requires redoing the work and there are over 100 downstream steps in the timeline, many of which break as a result since deleting and recreating sketches obviously breaks any downstream dependencies. Happy to share additional details in private if it at all helps. The ability to edit steps in the timeline is very powerful in theory, but has been quite painful and limiting in practice.

[TrippyLighting]

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@Anonymous wrote:

 The ability to edit steps in the timeline is very powerful in theory, but has been quite painful and limiting in practice.

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Editing is usually fine, just don't delete anything unless you know what it's doing.

In genreal I agree. If you can display a message that something is wrong then you know what it is and where it is. We want to know and see where it is!

[Anonymous]

Editting simple parametric models is pretty safe. Working with surfaces, I regularly getting warnings and errors on downstream trim, shelling and patching operations.

More guidance on errors and warnings to help resolve them would be really helpful.

[epeleg]

I have also encountered the exact same problem.

it is possible that its a result of me deleteing something...

but i am not sure.

maybe it would be a good idea to provide a better explenation upon deletion of what is going to break?

or add some way to "patch" the missing references...  or a least show some textual description of what exactly is broken.

this is very furstrating and it would seem like i am going to have to re-sketch everything.

[kyrreaa]

Yes, this does not appear to have improved a bit in 2+ years.

I still get same issues with compute failed.

In my case it is due to a sketch using included 3d geometry from other components, which have been deleted and replaced with new geometry.

The problem is, all such references are shown as purple, regardless of being from missing or curent included 3d geometry. It just sais Compute failed. And hints at revising constraints. I have no other choice but to go over the entire path (this is a sketch creating a path for a pulley-cable, based on positioning of elements solved by mechanical constraints) and delete purple inclusions and assigning new ones which basically makes the whole job double.

[Anonymous]

Can confirm it hasn't improved a bit in the last 20 days either.

[MaxHugen]

@jeff_strater: almost 5 years ago (if not earlier) the lack of info from the "compute failed" error was raised... nothing further done on this?  It's a PITA !

[jeff_strater]

actually, @MaxHugen - that is not quite true.  To quote my earlier post:

"Helping when there are errors in the design, especially for projected sketch geometry.  Today, there is no good way to re-project a failed projection.  You need to just delete the projected sketch geometry, and project a new one, then hook up any constraints, dimensions, etc.  We'd like to improve this with more diagnostics about where the original geometry you projected from is, and more information about what went wrong, and a way to repair without re-creating a lot of your sketch.  It's on our list, but we haven't quite gotten to it yet."

That exact project did get implemented.  It is called Manage Lost Projections", and does exactly what is described here:  You can re-attach failed projections, break links, or delete the failed projections, and preserve all downstream references to it.  Give it a try.

[MaxHugen]

Apologies Jeff, my mistake, I think I'm confusing Projections vs Lofting.  It's a case of "newbie frustration".

I'm trying to Loft the hull of a SailGP F50 catamaran, and find that lofting from one sketch to another is problematic in a couple of cases.  So I don't go OT, I'll post a separate question in a while.

But if you have any videos etc that you could suggest for more "complex" lofting in the meantime, I'd appreciate the links. 🙂

Cheers, Max