Home > Community > Forums > RF Design > ADEXL and Montecarlo : 'global' PSF file creation

Email

* Required Fields

Recipients email * (separate multiple addresses with commas)

Your name *

Your email *

Message *

Contact Us

* Required Fields
First Name *

Last Name *

Email *

Company / Institution *

Comments: *

 ADEXL and Montecarlo : 'global' PSF file creation 

Last post Mon, Apr 8 2013 2:28 AM by Andrew Beckett. 5 replies.
Started by MicheleA 04 Apr 2013 01:00 AM. Topic has 5 replies and 1237 views
Page 1 of 1 (6 items)
Sort Posts:
  • Thu, Apr 4 2013 1:00 AM

    • MicheleA
    • Top 150 Contributor
    • Joined on Wed, Feb 1 2012
    • Den Bosch, Netherlands
    • Posts 60
    • Points 885
    ADEXL and Montecarlo : 'global' PSF file creation Reply

    Hi all,

    I have a *very long* MC run which is taking far more than expected. It simulated some 1000 points already and I would like to examine the results. Unfortunately (for a reason that escapes me) the most important parameter is an expression working for normal sweeps but not for MC. Therefore I cannot see what I would like right now.

    I will probably be able to 'trick' the simulator after the sim has finished. And now is the question:

    --> If I stop the simulation, will ADEXL create a 'top level' PSF from which to extract the istogram of the variable (expression) I need?

    I cannot see this PSF database in the root of the simulation right now.

    I would like to avoid wasting so many days of simulation so if anybody knows either:

    - the answer to the above question, or

    - a way of accessing ADEXL results structure in order to create histograms

    I would really be grateful :-)

     

    Kind Regards,

    Michele 

    • Post Points: 20
  • Thu, Apr 4 2013 1:29 AM

    Re: ADEXL and Montecarlo : 'global' PSF file creation Reply

    Hi Michele,

    I've just tried this in  IC6.1.5.500.16.2, and it worked fine; I was able to plot the histograms on my incomplete monte carlo run. My expectation was that this would work - I just wanted to confirm it before I replied.

    Of course, don't blame me if it doesn't work for you ;-)

    Andrew.

    • Post Points: 20
  • Thu, Apr 4 2013 3:32 AM

    • MicheleA
    • Top 150 Contributor
    • Joined on Wed, Feb 1 2012
    • Den Bosch, Netherlands
    • Posts 60
    • Points 885
    Re: ADEXL and Montecarlo : 'global' PSF file creation Reply

    Hi Andrew,

    thanks for your super-prompt reply :)

    However, I was not clear enough: in my outputs setup, there are signals and expression which are 'working'. For these, I can see the mean/sigma current values and even plot the partial results (histogram) if I want.

    However, next to those, I also have expressions which do not evaluate correctly in the output pane. ADEXL is giving some error when simulating MC, however the exact same expression work seamlessly if you run a 'simple' single point simulation, and after MC sim has finished you can work your way around this issue by re-building the expression from its components. At this point, you can have your mean/sigma and histogram for those expressions which do not readily evaluate while simulating.

    Right now, we are 'in the middle' of a MC sim. At this point:

    - there is a PSF database at top level, but it is empty!

    - there are PSF databases in each sim folder (each MC run), but although there are data files (pss.td and so on..), those PSF are not recognized as databases from the Results Browser, so we cannot open them to display results.

     I am using IC6.1.5-64b-500.11, btw.

     ...On a different note, maybe you can shed some light on the type of error we are getting, or its possible root cause.

    Here attached is:

     

    • export of the relevant outputs : some of them evaluate, some do not.
    • a snapshot showing that 'up to a point' these expression work
    • an 'artil.log' file which I could find in every MC subfolder, complaining that 'there are no valid results'
    • the reaction I got displayed on CIW...this latter is very cryptic to me but sounds like - within the MC - ADEXL is not able to fetch the data 'correctly'.

     

    • Post Points: 20
  • Thu, Apr 4 2013 4:52 AM

    Re: ADEXL and Montecarlo : 'global' PSF file creation Reply

    Hi Michele,

    A quick answer because I'm tied up with meetings today so can't really focus on this (so it might be best to go to customer support).

    • The PSF database at the top level should be empty, because it is populated based on what ran - it's actually a set of references to the lower level run results.
    • I would expect you to be able to open a single point run in the results browser, assuming it has finished (doing RMB->Results Browser over the individual run output).
    • Whether you can access the individual run results will depend on whether you  have saved family data or not (one of the monte carlo options are).
    • I suspect your problem is caused by the fact that you have dependent expressions using the "ADE L" way of having just the output name referenced rather than using calcVal("outputName"). There are some issues with doing that in ADE XL. If  you used calcVal(), I would expect it to work...

    Regards,

    Andrew.

     

    • Post Points: 20
  • Mon, Apr 8 2013 2:11 AM

    • MicheleA
    • Top 150 Contributor
    • Joined on Wed, Feb 1 2012
    • Den Bosch, Netherlands
    • Posts 60
    • Points 885
    Re: ADEXL and Montecarlo : 'global' PSF file creation Reply
    Andrew Beckett:

    Hi Michele,

    A quick answer because I'm tied up with meetings today so can't really focus on this (so it might be best to go to customer support).

    • The PSF database at the top level should be empty, because it is populated based on what ran - it's actually a set of references to the lower level run results.
    • I would expect you to be able to open a single point run in the results browser, assuming it has finished (doing RMB->Results Browser over the individual run output).
    • Whether you can access the individual run results will depend on whether you have saved family data or not (one of the monte carlo options are).

    Hi Andrew,

    indeed you are right. We could not access the curves because we (on purpose) decided not to save data families. It gets very heavy very quickly with MC.

    Andrew Beckett:

    • I suspect your problem is caused by the fact that you have dependent expressions using the "ADE L" way of having just the output name referenced rather than using calcVal("outputName"). There are some issues with doing that in ADE XL. If  you used calcVal(), I would expect it to work...

    ...Yeps...We lost that simulation, anyways. Once that specific function is returning an error, of course there is no data saved.

    And you are right again :) : I developed the functions using ADE L/ Calculator. I changed any reference to a previously defined function with CalcVal(function, testbench) and solved the issue.

    By the way, are these differences documented somewhere easily accessible?

    Thanks again!

    Michele

    • Post Points: 20
  • Mon, Apr 8 2013 2:28 AM

    Re: ADEXL and Montecarlo : 'global' PSF file creation Reply

    Michele,

    MicheleA:
    By the way, are these differences documented somewhere easily accessible?
     

    Unfortunately it should really be in the Known Problems and Solutions - it ought to work without the calcVal, but doesn't. I recall a colleague hitting a similar problem a while back, but they don't seem to have written it up as a solution or it ended up in the KP&S either. Sorry...

    Regards,

    Andrew.

    • Post Points: 5
Page 1 of 1 (6 items)
Sort Posts:
Started by MicheleA at 04 Apr 2013 01:00 AM. Topic has 5 replies.