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No Waveform Data When Using psf Command

mckeen

Hi,

I'm trying to use the psf command to convert the tran.tran file to ascii format.  I'm pretty sure the tran.tran file is in psfxl format. The syntax I'm using is...

psf -i tran.tran -o tran.dat

However, the tran.dat file that is created doesn't contain any waveform data.  The header info is there, but in the trace section of the file, I only see a single data point at time t = 0

Am I missing something or not calling the function properly?

TRACE
"group" GROUP 11
"ibb_0" "V"
"ibb_1" "V"
"ibb_2" "V"
"ibb_3" "V"
"VBB_0" "V"
"VBB_1" "V"
"VBB_2" "V"
"VBB_3" "V"
"RF_REF" "V"
"RFP" "V"
"RFN" "V"
VALUE
"time" 0.00000
"group" 0.00000
0.00000
0.00000
0.00000
0.00000
0.00000
0.00000
0.00000
0.00000
0.00000
0.00000
END

Thanks

Trent

  • Hi Trent,

    I have used the psf command many times successfully - but it has been a while! YOur syntax appears correct, but I am concerned that it may not work with psfxl formatted data. My understanding is that psfxl does not store each simulation data point, but rather will only store a value when it has changed from its prior value.  Have you tried to force the data to be saved in psf format and then using the psf command?

    I am sure Andrew or others will know if psf can successfully access data in psfxl format. If that fails, using ViVA or an ocean script can generate ASCII data from a psfxl data set.

    Shawn

  • Shawn is right that the most likely explanation is that the data is PSF XL not PSF. With PSF XL there is a header which is there for compatibility, but the actual waveform data is in a different format, and there's no ASCII equivalent, so you can't convert PSF XL to ASCII using the "psf" utility.

    Shawn is not correct about it only storing the data when it changes though - normally the entire waveform is saved with PSF XL (and with PSF); the behaviour of only saving data when it changes (enough) is enabled by using the "compress" option of the tran analysis - this is regardless of the output format though (and has been supported for as long as I can remember).

    Regards,

    Andrew.

  • Hi Andrew,


    > Shawn is not correct about it only storing the data when it changes though -

    > normally the entire waveform is saved with PSF XL (and with PSF); the behaviour of only

    > saving data when it changes (enough) is enabled by using the "compress" option of the tran analysis

    Thank you for the correction - I did not remember that correctly!

    Shawn

  • Thanks guys,

    I was able to get it working following your advice.  I just specified the data format to be psfbin

    OUTPUT_FORMAT psfbin

    and then the psf command works fine.

    Trent

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