instance accelerator

[Dmi3U]

Hi All!

Few years ago I decided not to use instance accelerators anymore - they caused unnecessary regeneration and modifications of instances and being inside of PLM I did not see the need for them. Last week, during TC meetings, I heard PTC making a statement that we must use the accelerators. I did not get a clear explanation why.

I would like to hear your opinion...

Thank you,

Dmitry

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[ClintWalton]

Hi Dmitry,

I found an older document that discusses this topic.

https://support.ptc.com/appserver/cs/view/solution.jsp?n=115338&source=tssearch

Can you put the statement you heard at the TC meeting in better context? Perhaps other users might help you weigh the pros and cons.

[AndyHermanson]

It was in the context of the imbedded graphics chapter to replace the current light weight graphics used today. I think the point was that the instance accelerator would hold the graphics chapter or something. Moshe Baum is who led the discussion.

Thanks,
Andy

[MosheBaum · Accepted solution]

Hi guys,

Indeed as I have stated in the TC session, that for most of cases of Family Tables usage - it is highly recommended to use Instance Accelerators.

Just to clarify, by no means one must use accelerators, but in majority of scenarios - they are to improve performance of retrieval, regeneration, etc. Quite simply - the very reason they were developed was to boost retrieval and update performance in assembly context. They hold important information like graphics, parameters, references and dependencies information that help the system load and update faster, that otherwise would need to load Master content of the generic and the instances involved.

I know there has been over the years some controversy around accelerators due to certain situations that were identified when their efficiency vary and performance may differ when using with Windchill or from disc (e.g. this article here) yet in other situations may not make much difference; as well as some bugs that were captured occasionally and fixed thereafter. By now this is a fairly mature and stable tool as many cases are long resolved (articles are available in Tech Support knowledge base site).

Hope this clarifies.