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Another unique veriloga filename question

ricez

I have a veriloga block that samples some signals and writes them to a text file.  I found in here:

http://www.cadence.com/forums/p/20699/1304920.aspx#1304920

how to modify the filename for each run, very helpful, but it's still not quite what I need.  I would like to have a new file for each iteration in montecarlo, but it appears that the process ID does not change for each iteration, and time doesn't seem to work either as it appears that the simulation is started once, not re-netlisted and re-started as with corners.

 Currently I have:

fp = $fopen("/path/%P.txt");

Which at least gets me past the problem I was having where if I had 4-processors running in parallel, they would all try to write to the same file, now each uses it's own file.

I then add:

@(final_step) $fwrite(fp, "%s\n", "EOF");

With that, I can post-process the text files to seperate out the individual iterations, but it sure would be much cleaner to have something along the lines of:

fp = $fopen(cat("/path/data", MonteCarloIteration#,".txt"))

Does anyone know of a way to do such a thing?

Parents

  • Thanks Andrew,

     I tried using the %A, but regardless of whether I selected "Save Data to Allow Family Plots" or not, the file name is always mc1_tran.

    Somewhat interesting side note, when I first added the %A, only about 10% of my montecarlo iterations would be run.  If I removed the verilogA block, they would all run fine. I found I had to add the tran statement to:

    @(initial_step("tran")) fp= $fopen("path/%A.txt"); , for it to run all of the sims when including %A in the filename.

     I'll live with it as is, and seperate out the iterations with a script.

    Jeremy

Reply

  • Thanks Andrew,

     I tried using the %A, but regardless of whether I selected "Save Data to Allow Family Plots" or not, the file name is always mc1_tran.

    Somewhat interesting side note, when I first added the %A, only about 10% of my montecarlo iterations would be run.  If I removed the verilogA block, they would all run fine. I found I had to add the tran statement to:

    @(initial_step("tran")) fp= $fopen("path/%A.txt"); , for it to run all of the sims when including %A in the filename.

     I'll live with it as is, and seperate out the iterations with a script.

    Jeremy

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