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Problems visualizing results with Wavescan - MMSIM 6.2 - IC 5.1.14

yoyega

 Hi, I am using MMSIM 6.2 with IC.5.1.14. I have to run a large tran simulation with spectre and I've been having problems at the moment of visualizing the results with wavescan. According to sourcelink solution 11264780 I should set the following variable to have the tran.tran file broken up in 2GB files: setenv PSF_WRITE_CHUNK_MODE_ON true. So I have set this environment variable, but I still have only one tran.tran file of 70GB. Is there a solution for this?

 

Thanks,

Pedro

 

 

Parents

  • Hello.

    I encountered a different problem, but it came down to the same thing discussed here, so I thought it might be better to just keep everything in one place.

    Namely, I  am trying to do an S-parameter analysis, but somewhere about a half of the simulation it stops and I get:

    Fatal error found by spectre at freq=... during SP analysis 'sp'.

    write error on PSF file: Error detected in psf library while writing to file 'sp.noise.sp'

    Browsing the Internet I came to this problem - and realized that my sp.noise.sp is actually exactly 2 GB of size. So I started looking for solution. First I set the variable:

    PSF_WRITE_CHUNK_MODE_ON=true

    export PSF_WRITE_CHUNK_MODE_ON

    And when I ask for getShellEnvVar("PSF...ON") in CIW, I do get "true".

    Then I found that this only works when you work with psf mode. Looking into my spectre.out file I realized that it holds a line "-format sst2". Then I found that in order to change that I am supposed to go to ADE -> Setup -> Environment... and set "userCmdLineOption" to "-format psfbin", without the quotes. Saved the state, of course.

    Which I did. Then I closed down all the Cadence stuff, even the terminal, started everything all over again, loaded the state holding the change I just did, and run the simulation.

    Again I have the same thing, and again when I look into the spectre.out file I see "-format sst2" in there.

    The versions I am using are: IC5 1.41.151 and MMSIM 11.10.509.

    What am I supposed to do and how do I actually change the format? 

    Thank you very much.

    p.s. If you have some additional time, what exactly are these formats and what is the actual difference? Why do we even have two?

Reply

  • Hello.

    I encountered a different problem, but it came down to the same thing discussed here, so I thought it might be better to just keep everything in one place.

    Namely, I  am trying to do an S-parameter analysis, but somewhere about a half of the simulation it stops and I get:

    Fatal error found by spectre at freq=... during SP analysis 'sp'.

    write error on PSF file: Error detected in psf library while writing to file 'sp.noise.sp'

    Browsing the Internet I came to this problem - and realized that my sp.noise.sp is actually exactly 2 GB of size. So I started looking for solution. First I set the variable:

    PSF_WRITE_CHUNK_MODE_ON=true

    export PSF_WRITE_CHUNK_MODE_ON

    And when I ask for getShellEnvVar("PSF...ON") in CIW, I do get "true".

    Then I found that this only works when you work with psf mode. Looking into my spectre.out file I realized that it holds a line "-format sst2". Then I found that in order to change that I am supposed to go to ADE -> Setup -> Environment... and set "userCmdLineOption" to "-format psfbin", without the quotes. Saved the state, of course.

    Which I did. Then I closed down all the Cadence stuff, even the terminal, started everything all over again, loaded the state holding the change I just did, and run the simulation.

    Again I have the same thing, and again when I look into the spectre.out file I see "-format sst2" in there.

    The versions I am using are: IC5 1.41.151 and MMSIM 11.10.509.

    What am I supposed to do and how do I actually change the format? 

    Thank you very much.

    p.s. If you have some additional time, what exactly are these formats and what is the actual difference? Why do we even have two?

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