Monte Carlo simulation of noise contributions using SpectreMDL

Hello,

I'd like to obtain values of noise contributions in the circuit for each Monte Carlo run.

I was able to make Spectre output total noise for each Monte Carlo iteration into a file, but no luck with noise contributions.

Below is a made-up example: two resistors in series and I am simulating voltage noise at the point where the resistors meet.  Obviously, both resistors contribute to noise.  The example shows how to dump the total noise at each Monte Carlo iteration into a file called "scalars".  Is there a way to make Spectre output noise contributions from r1 and r2 into the same file?

Thanks!

test.scs:
====================================================
r1 (1 0) res_model l=10e-6 w=2e-6
r2 (2 1) res_model l=15e-6 w=2e-6
vr (2 0) vsource dc=1.0 mag=1
model res_model resistor rsh=100 kf=1e-20*exp(dkf)
parameters dkf=0
statistics {
  process {
    vary dkf dist=gauss std=0.5
  }
}
noi (1 0) noise freq=1
====================================================

test.mdl:
====================================================
alias measurement noi_test {
  run noi;
  export real noi_total=noi_test:out;
}
run montecarlo(numruns=10,variations='all,scalarfile="scalars") {
  run noi_test;
}
====================================================

Launch command:  spectre =mdl test.mdl test.scs

Spectre version: 17.1.0.238.isr4