saving designs in virtual memory to disk

Hi Harish,

Without seeing the code I can't be more certain, but you might have a cellview open in VM more than one time, this results in multiple pointers to the memory, rather than multiple copies of the data - you can use dbClose() multiple times until it returns nil to close off all the references to the cellview in memory.  You might have the read-only celview open graphically, and if so, some of your SKILL might be operating on this inadvertently, rather than the editable cellview, hence making edits in a read-only cellview? There is a dbPurge() command also, but this reverts to the disk copy of the cellview, not saving any changes.  Make sure that you have separate variables for the original and new cellviews and that you don't open either design more than once (either graphically, or in the code), or at least try to identify if this could happen and code around such circumstances.

Hopefully this might help, but if not, you might need to paste your code, or portions of it, so that it can be viewed in the forum...

Regards,

Lawrence.

Here's a transcript showing what I just tried (in IC616), which shows everything working fine. Which just shows the importance of what Lawrence mentioned - seeing your code. It may be you've made a mistake in the code which we might be able to spot if we can see it.

cv=dbOpenCellViewByType("opamp090" "adc_sample_hold" "layoutTry")
db:0x1ac01192
cv~>mode
"r"
new=dbCopyCellView(cv "opamp090" "adc_sample_hold" "layoutTryCopy")
db:0x1ac00492
new~>mode
"a"
cv~>mode
"r"
new~>someNewProp="hello"
"hello"
dbSave(new)
t
dbClose(new)
t
dbClose(cv)
t
dbGetOpenCellViews()
(db:0x1dd0f512 db:0x1dd0e892 db:0x1dd0e392 db:0x1dd0df12)
dbGetOpenCellViews()~>cellName
("inv_2x_hv" "nmos2v" "pmos2v" "pmoscap2v")

So as you can see, the original and copy are no longer in memory. It definitely saved it too:

tryCopy=dbOpenCellViewByType("opamp090" "adc_sample_hold" "layoutTryCopy")
db:0x1ac01192
tryCopy~>someNewProp
"hello"

Regards,

Andrew.

 Hi,

I am using ICADV 12.1 version

Below is my code

 source=dbOpenCellViewByType("my_lib" "my_cell" "my_view")

target = dbCopyCellView(source "target_lib" "target_cell" "target_view")

dbClose(source)

dbSave(target)

dbClose(target)

open =  dbOpenCellViewByType("target_lib" "target_cell" "target_view" "masklayout" "a")

dbCreateInstByMasterName(open "*******************" ) ;Creating a instance in the opened cell view

dbSave(open)

dbClose(open)

I am getting the following warning

dbSave Attempt to save readonly design

Thanks

Harish

Harish,

Which of the two dbSave calls is generating the message? If you look at target~>mode and open~>mode do they show that it is actually in "a" mode?

Which virtuoso version are you using (type getVersion(t) in the CIW).

Regards,

Andrew.