Hi Guys, Carlos you could create a file called ipopt.opt ( https://coin-or.github.io/Ipopt/OPTIONS.html ) in the directory you are calling it from and specify a file IPOPT to print to after it is done. I have not done it for this exact problem but have used ipopt.opt file in the past as a work aroun...

Hey Carlos, From waht I understand depending on the architecture of the machine some low level changes to the setup of IPOPT can happen. Are they both Windows or Linux machines? Also check what solver IPOPT is selecting as default (e.g. mumps vs pardiso - see pic attached). Screenshot 2023-04-28 130...

Hey Nick, The test simulations I was running on the clusters converged as expected. Using MUMPS the objective and constraint errors for my problems were at least two orders of magnitude smaller on the iteration that the simulation converged compared to the same iteration using pardiso as I mentioned...

Hey Nick, I think I found a workaround that will work at runtime. An Ipopt options file (ipopt.opt) can be created in the directory where Ipopt will be executed from that you can specify a lot of the Ipopt options (https://coin-or.github.io/Ipopt/OPTIONS.html) that might not be accessible through th...

Afternoon Nick, Thanks for the quick reply! Yeah the patch files were in the same folder as the CMakeLists.txt file and I didn't see any errors during the configuration and build regarding them. I can see the MUMPS and METIS header files are installed. Also gcc (and gfortran) are installed on the sy...

Hello everyone, With some help I have managed to get OpenSim Moco running on some clusters I have access to. In my tests on the cluster (built from source) I get my optimal control problems to run however I have noticed that Ipopt is using pardiso. This is different to my local machines (not built f...

Hi Ayman,

Thanks for confirming this for me! If I come across the issue again I will do as you suggested.

All the best,
Pavlos

Hi Samuele, Nice to see someone else tackling spine models... they're always fun! Sounds similar to a study I did a few years ago. As for your simulation timings. There has been a lengthy discussion on this topic in the Moco forum - might be worth checking that out. Something I found to work recentl...

Hello all, I am having some trouble figuring out how to safely delete muscle via points through the Matlab API. Currently I am using: % Delete via point if flag_delt2ViaDelete == true delt2_GP.deletePathPoint(init_state, point_count); osim_model.initSystem(); osim_model.finalizeConnections(); osim_m...

Hi Jake, I had a similar issue a few years ago. Some differences there as I was running OpenSim 3.3 on Matlab R2019(?) on a windows PC. In any case it might be of use. I tried a lot of tweaking within Matlab to try and control memory but what worked for me was to bundle the majority of my code that ...