how to save spectre simulation results to a single raw file？

Spectre has never saved into a single file by default. If you picked the output format to be nutbin or nutascii (e.g. passing -f nutbin or -format nutbin on the command line). Perhaps you were doing that before and not now?

Andrew

Hi Andrew

Thanks for your reply.

i am certain that the older version of spectre will work. After all , we have been using the all along.

Old version:12.1.0.272

Execute command “spectre acce110653216.sp -r 11.raw”，the result is a single raw file. As shown below:

-rw-r--r-- 1 chris model 56230 Feb 17 18:21 11.raw  

New version :23.1.0.063

Execute command：“spectre acce110653216.sp –r 22.raw”, the result is a folder named 11.raw. As shown below:

drwxr-xr-x 2 chris model 4096 Feb 17 2025 22.raw

I ran an example with the same (over 12 year old) version of Spectre, using a SPICE netlist (just in case that made a difference), and it didn't - I still got the default PSF result (i.e. a directory).

My guess is that you have an option within the netlist which is setting the output format. Can you share the contents of acce110653216.sp? If you can't share the entire file, I'd still want to see any options or analysis statements within the file. 

Regards,

Andrew

HI Andrew

Due the confidentiality reasons, I can not share this file with you.

I run command "more acce110653216.sp"

The content of the first few lines is as follows：

//** Keysight Inc **//
simulator lang=spectre
svop options save=selected rawfmt=nutbin

parameters vds=2.0
parameters vgs=1.0
parameters vbs=0.0

Hi Andrew

I'm sorry for my previous misrepresentation. What I meant to say is that in the simulation results, "raw" is a single file instead of a generated "raw" directory.

I followed your previous suggestion and was able to meet my requirements using the following commnd

spectre -format nutascii acce110653216.sp -r 11.raw

Is there any way to set the default save format to be the raw file instead of having to add "-format nutascii" every time?

With:

Virtuoso7878 said:

svop options save=selected rawfmt=nutbin

in your netlist, it should be writing a single binary nutmeg format file without needing additional command-line arguments. That's what I see happening with the newer subversion of Spectre you mentioned (23.1.0.063 - I tested it).

One possibility is that (for some reason) you have the $SPECTRE_DEFAULTS env var overriding this - but perhaps you could share the log file you get from running Spectre with the newer version (that is producing the raw directory) so that I can see if there's any information as to why the rawfmt=nutbin is being superseded?

Andrew

HI andrew

Thanks for your help.I check my env var and it was indeedSPECTRE_DEAFULTS env set issue.

I have already solved my problem. Thanks