A problem about virtuoso

[melectronics]

Hi, all.

When I open my virtuoso library manager and click on the TSMC 90nm library, no cells appear in the cell column or the view column. This happened yesterday and never happened before. The possible reason is that too many people are accessing the PDK at the same time. But how to solve the problem? Thanks!

When I click on the TSMC 90nm library in the library column, the warning I get is as follows:

Warning: Couldn't get an exclusive lock for "/home/cadence/TSMCHOME/pdk/tsmcN90rf/TransmissionLine.Cat"
Permission denied
Warning: ddDeleteDeep: Couldn't get exclusive lock on ddLibFileType 'TransmissionLine.Cat'.
Warning: ddCatRemove: unable to remove category TransmissionLine.
Warning: Couldn't get an exclusive lock for "/home/cadence/TSMCHOME/pdk/tsmcN90rf/TransmissionLine.Cat"
Permission denied
Warning: ddDeleteDeep: Couldn't get exclusive lock on ddLibFileType 'TransmissionLine.Cat'.
Warning: ddCatRemove: unable to remove category TransmissionLine.

 

[dick_freebird]

I'd have a look (or have your sysadmin do it) at how the
library permissions are set. To me, this looks like someone
is getting write access, at which point multiple locks can't
be sensibly had. But why is a foundry sourced reference
library allowed to be opened in this way? Or, is the
configuration management tool just defaulting to a
open-for-edit rather than open-read-only?

 

[melectronics]

I'd have a look (or have your sysadmin do it) at how the
library permissions are set. To me, this looks like someone
is getting write access, at which point multiple locks can't
be sensibly had. But why is a foundry sourced reference
library allowed to be opened in this way? Or, is the
configuration management tool just defaulting to a
open-for-edit rather than open-read-only?

Hi, our technician does not have experience in using Cadence. He only knows Linux well. The library is set to be open for read only. I do not think this has been changed anyway.

 

[dick_freebird]

Well, in the version-control schemes for Cadence that
I have seen, opening a file read-only does not apply a
lock.

Maybe a Cadence application engineer can help you
more.

Now, if you have the disk quota and permissions, you
might just want to make your own TSMCHOME copy of
the main, re-point yourself to the local copy under your
control, and forget sharing with anyone.