DWG in CONNECT edition

We have known two things that can impact DWG open performance:
1) Lots of solids/surfaces in DWG file - ACIS kernel is no longer available in CONNECT hence additional time required to translate ACIS bodies to Parasolid.
2) Lots of attributes that are out of sync in file - by default CONNECT converts DWG attributes as item types which require well defined attribute definitions vs attributes. Among other things, an attribute that does not have a definition, or a definition that does not have an attribute instance, is considered out of sync which impacts file open performance. In this case, turning on toggle "Block Attributes as Tags" shall make a difference. Obviously you will not have item types after file opened. But you still can manually convert tags as item types after file open.

I have tried to toggle "Block Attributes as Tags" but I did not see any difference. I have a large dwg file (50mb) and it took 30sec to reference that file in Microstation v8i SS4 and in Microstation CONNECT it took over 15 minutes.
There must be something wrong here, if this is the case then CONNECT will be useless for someone working with a lot of references for example dwg and IFC.

Hi Stefan,

can you provide more details about the file(s) you used for testing? E.g. whether it's plain 2D or there are 3D ACIS solid, the size or a number of elements etc.

As Don H. Fu mentioned in his original (and 2 years old) answer, how ACIS solids are managed when DWG is opened was changed in CONNECT Edition completely and it's one from reason why it's so slow. So it would be nice to know whether you have e.g. DWG without solids, but also too slow to open.

With regards,

  Jan

Hello Jan;

yes the mentioned dwgs are made of 3D-solids only.

Actually they are not native dwgs but have been exported from modelers like CREO, Catia or Inventor by our sub-suppliers.

Best Regards

Stefan

Hi Stefan,

as Don H. Fu explained in his original answer, all ACIS solids from DWG have to be converted to Parasolid at background when DWG is opened. Because this thread is quite old, maybe you should create a new post about Update 10 specifically, so it will be more visible to Don and other Bentley people resposnible for DWG implementation.

With regards,

  Jan

Hi Jan;

good idea. I will do that. We already created a service request about that issue as well.

Regards

Stefan 

Agree, Update 10 have improvements but still a lot of problems with AEC objects from Autodesk stuf.

I know Bentley is working on it and I deliver a lot of date to test, but we need a better solution because Autodesk is used more and more but I don't want to change!

//Christiaan

Agree, Update 10 have improvements but still a lot of problems with AEC objects from Autodesk stuf.

I know Bentley is working on it and I deliver a lot of date to test, but we need a better solution because Autodesk is used more and more but I don't want to change!

//Christiaan

Christiaan Post said:

better solution because Autodesk is used more and more but I don't want to change!

Bentley has lost this battle already, look for statistics and counts about  AutoDesk and Benltey user world wide! Or watch how much projects are DWG or autodesk based  (Revit).