Cannot load layers in layout

 Ok i created another library based on my design kit lib, and then to there I copied some of the working cells from the library I had before, i tried to open it, and i could see layers, however I still cannot see them in original library.

I noticed that on the LSW top left corner of the working library i see: cmrf7sf, which stands for my design kit tech name.

But on the library whose layouts cant be seen i see cdsDefTechLib,  I guess somehow it got changed from cmrf7sf to  cdsDefTechLib,

So how can I turn it back to cmrf7sf? 

I tried all kinds of stuff, for example from menu: IBM_PDK->Library->Add Ibm PDK Properties, and tefine tech file there. It did not help!

And interesting thing is, every time when i create new library and put something there, after few restarts it turns again into cdsDefTechLib.. that doesnt make any sense!

Is that setting stored in some textfile? I cannot find it.. How can i fix it?

I don't know why it is getting lost, but you'd need to use the Attach button in the Tools->Technology File manager form to reattach to the technology library.

This info is stored as a property in the library's data.dm (so the library properties) (techLibName is the property name). Is your library data.dm getting removed somehow?

Andrew.

Ok, so:

1) no data.dm is not there, However strange thing is when i create the library, and choose to "Reference to existing technology file", and then look into the folder of newly created library, data.dm is not there either, is it normal?

2) your method of Attach button in Tools->Technology management for some reason only shows me esd7rf as a design library, and then shows all other libraries I have as a technology library, i.e. I dont know why I do not see another technology libraries in the design library dropdown?

 Reference is different from Attach. If you reference a technology library you are using the incremental technology database approach - your library will then be a technology database itself, which will in turn reference another library - if  you dump the tech file for your library (which is stored in the tech.db file; attached libraries don't have these), you'll see it has any local overrides plus a reference link to the other technology library (or libraries).

So that may be the reason why they all show up as technology libraries in the list?

Hard to know without seeing - you may be best contacting customer support?

Andrew

Im not sure how many days will the support take. I decided to create some library from scratch and see whats being created, here it is:

1. when i create new library with "reference to technology" the following two files are created in library folder:

cdsinfo.tag

tech.db

Now, when i did that i saw that the layout now is being shown correctly with all layers. (and by the way, when this method was used to create the library, then on top left corner of LSW i see my library name instead of the technology process name, but it works). However, I cannot run the preprocessor to process .netlist files for the LVS. (the tool couldnt find the preprocessor.pl file located within folders of a kit)

2. after that I did this in CIW: IBM_PDK->Library->Add IBM PDK Lib Properties, and added properties of the cmrf7sf. After doing that I noticed the data.dm file appeared in my library folder (together now with cdsinfo.tag and tech.db). 

So it looks to me that one has to do both #1 and #2 operations to get it all working. 

My original library I created long time ago, and forgot how i got it working, the only thing i know is that i used "attach" method when creating it, not the "reference" method, and after things went bad I couldnt bring that library to life. 

So i created it from beginning using methods above, and will transfer elements from old library. 

And again, i want to stress on the fact that, when i now wanted before to create library using "attach" method, the LSW showed correct layers only at the time when i started creating cell, right after creation of library, but after reboot, all LSW again disappears! and on LSW i see "cdsDefTechLib" instead of technology name.

But when i created it using "reference" method, and then did operation #2, then i see the correct LSW after reboots as well.