Compress Settings: Display Accelerators ON or OFF?

RE: Compress Settings: Display Accelerators ON or OFF?

Steve Cocchi — Tue, 31 Dec 2013 15:40:52 GMT

Just to add... Building Dataset Elements are part of the process that automatically scans each DGN file when opened to insure that the levels used by your Family+Part system are available for DVs. If you are not using DVs in any fashion whatsoever, then you probably won't need this. And in that case you can set BB_DVDATASETELEMENTS = 0 to prevent those levels being written to each DGN. Should you ever venture into DV-land, however, you will definitely need to reset it to =1 in order for Part resymbolization to work. More information is available in the Help under "Configuration Notes" and in our Wikis - communities.bentley.com/.../compress-options-can-affect-drawing-view-performance.aspx

communities.bentley.com/.../8252.aspx

As Travis mentioned, Display Accelerators is what we formerly referred to as TFHydrate, originally introduced in Bentley Architecture V8i, and helps to increase DV performance at the expense of a slight increase in file size. It's essentially generating Parasolid bodies within each Building element which translates to faster processing vs. the older "recipe" method. The second post by Pradnya in this older thread explains it well:

communities.bentley.com/.../158639.aspx

RE: Compress Settings: Display Accelerators ON or OFF?

T_Wollet — Mon, 30 Dec 2013 14:52:23 GMT

Dominic,

Q1: The building display accelerators are used to cache the building resymbolization for any promoted view, not just Dynamic Views. This means that if you apply any of the fitted clip volumes using a seed view that is promoted (to a building view) you would get the performance benefit of form unification, geometry maps, plan symbols, etc. If you are never using promoted views while modeling, then you could compress the Building Display Accelerators to reduce file sizes of your working models, but this will likely not improve performance (other than PW Delta File Transfer) if that is what you are seeking. Likewise Compressing BDA's also should not reduce the file size of the DEM output.

Q2: Yes, same as TFHydrate.

-Travis

RE: Compress Settings: Display Accelerators ON or OFF?

Thomas Voghera — Mon, 23 Dec 2013 16:50:54 GMT

If you search this forum you should find some threads about TFhydrate, display accelerators and compress in ABD with regard to ss3 and ss4 from earlier this year,

Steve C can probably give a better explanation.

My experience is BDAs don't do much difference.

Disabling Auto Annotations does speed things up, but also something you don't want to do.

CVEs speed things up, but again something you don't want to do.

But you have to test yourself - I a have the Swedish dataset and think there is something in it that slows file open down.

RE: Compress Settings: Display Accelerators ON or OFF?

Thomas Voghera — Mon, 23 Dec 2013 16:38:23 GMT

That is ss3 ?

Ss4 81109593 is much better in this aspect. At least for me it took away some problems.

RE: Compress Settings: Display Accelerators ON or OFF?

dominic SEAH — Mon, 23 Dec 2013 07:57:48 GMT

.225

RE: Compress Settings: Display Accelerators ON or OFF?

Thomas Voghera — Sat, 21 Dec 2013 14:08:13 GMT

which version are you using?