Here are the MCMC test runs shown in the slides.
set chimode = 0
set gridflag = 0
set shrcoords = 1
setlens 1 1
alpha 1 0 0 0.2 0.3 0 0 0 0 1
1 0 0 1 0 0 0 0 0 0
stepsize 1
0.3 0 0 0.3 0.3 0 0 0 0 0
0 0 0 0 0 0 0 0
set seed = -22
chitest on 1
0.3 0.05
set seed = -24
# mcmc1a: simple Gaussian steps
MCMCset 1 Nchain 10 spread 3
MCMCrun mcmc1a
# mcmc1b: adaptive Gaussian steps
MCMCset 2 Nchain 10 spread 3
MCMCrun mcmc1b
stepsize 1
0.001 0 0 0.001 0.3 0 0 0 0 0
0 0 0 0 0 0 0 0
# mcmc1d: simple; start with tiny steps, adjust scale
MCMCset 1 Nchain 10 spread 1000
MCMCrun mcmc1d
quit
And here is an example of an MCMC run for the test case discussed on the fitting page.
set omega = 0.27
set lambda = 0.73
set hvale = 1.0e4
set zlens = 0.3
set zsrc = 2.0
set gridflag = 0
set chimode = 0
set checkparity = 0
set omitcore = 1.0e-6
data testquad.dat
setlens fit2c.start
MCMCset 2 Nchain 10
MCMCrun fit4
quit