MATLAB issue compilation

[brunolnetto]

Hi,

I try to compile the library on a MATLAB v2017a, but the default example "runme_para_im3kw" do not compile. The log on the terminal is below. If necessary, I can provide further information.

Error using getdp_numdof (line 58)
Octave:invalid-input-arg

[schoeps]

@irynakulchytska can you have look?

[schoeps]

@brunolnetto just to be sure: you have getdp and gmsh installed? which platform are you running on?

[brunolnetto]

Current update:

I HARDCODED the getdp path since it does not install as usual and now the log message is on Octave. On Matlab it still throws me the same error.

remove entire contents of /tmp/oct-kc5QzZ? (yes or no) yes
parareal: start 1/20 iteration
parareal: start coarse grid
resfile = /tmp/oct-GSsaLj/im_3kW.res
resfile = /tmp/oct-xf6htU/im_3kW.res
resfile = /tmp/oct-xT4xrx/im_3kW.res
resfile = /tmp/oct-Ci8gZ8/im_3kW.res
resfile = /tmp/oct-074eYc/im_3kW.res
resfile = /tmp/oct-PfICLj/im_3kW.res
resfile = /tmp/oct-591Jfg/im_3kW.res
resfile = /tmp/oct-7duRBq/im_3kW.res
resfile = /tmp/oct-i5ay7V/im_3kW.res
resfile = /tmp/oct-GBKIEP/im_3kW.res
resfile = /tmp/oct-TwdyuH/im_3kW.res
resfile = /tmp/oct-smVMmN/im_3kW.res
resfile = /tmp/oct-WhSNUn/im_3kW.res
resfile = /tmp/oct-Vz6fZl/im_3kW.res
resfile = /tmp/oct-VGx2an/im_3kW.res
resfile = /tmp/oct-8USOro/im_3kW.res
resfile = /tmp/oct-bLP5NE/im_3kW.res
resfile = /tmp/oct-x1B176/im_3kW.res
resfile = /tmp/oct-CH951P/im_3kW.res
resfile = /tmp/oct-VLfkwe/im_3kW.res
parareal: coarse grid took 104.656151s
parareal: start fine grid
parcellfun: 0/20 jobs done

[schoeps]

Your latest output looks reasonable. If future problems occur it may be a good idea to disable the parallel package. It's obviously important for any speedup but it makes debugging more complicated (I can see that parcellfun is executed, so you are using parallelization).

[brunolnetto]

It is reasonable, but does not got further. It both do not continue up this log and do not show up the simulation figures.

[schoeps]

Did you try to disable the parallel toolbox?

[brunolnetto]

It started the sequential time instead, which was awaited. I am waiting it finish to simulate.

warning: parareal: sequential time stepping

[brunolnetto]

It would be good if a progress bar is on use. Advice: https://github.com/brunolnetto/matlab-utils/tree/master/interface

[irynakulchytska]

@brunolnetto, thanks for your interest in our code.

It is reasonable, but does not got further. It both do not continue up this log and do not show up the simulation figures.

Please be aware of the fact that the fine solver takes quite a lot of time due to the very fine discretization of the PWM-signal. In particular, based on my observations, the fine solution on one subinterval (out of 20) takes about one hour.

In case you are not specifically interested in the PWM-inputs you could alternatively solve the system with a sinusoidal excitation also on the fine level, i.e., assign the variable ode_f to be the same as ode_c. This would allow you to set a bigger step size in opt_f, e.g., 'TimeStep',1e-5, and shorten the simulation time by 10 times compared to the current setting.

I hope you could find this useful.
Best regards, Iryna

[brunolnetto]

I am interested on it since we at University of São Paulo simulate dynamical systems with PWM signal, oftentimes without success. Almost certainly it occurs due to lack of mathematical rigor. Would you provide us some advice regarding the control of, for example, a high oscilatory LC system, when a PWM signal is on use?

[schoeps]

@brunolnetto Sorry this issue was forgotten. I assume that you lost interest in the mean time hence I will close this issue. Feel free to contact me if I am wrong.

[brunolnetto]

I will lost interest on questions only when I die. :-P