Hello Pasha; thanks for the feedback. I tried "implicit dynamics" before, but it did not make a difference in my "gait" simulations. It will be nice to check how it will be in "jumping." Just need to update my script for the new guess file with more states. About the tendons, I just read Rajagopal's...

Hello Pavlos, During the simulations in both machines, MUMPS is used by IPOPT. Since such possible differences exist in simulation results, is there a way to cope with it? Working with higher convergence thresholds seems impractical because of the increase in simulation convergence time (Model with ...

Hi Aaron,

All files and configuration are the same. I literally copied the folder and ran in the other machine.



Best regards.

Hello everyone. I'm trying to figure out I got (converged to) such different solutions with the same code in different machines. Below is an example of convergence simulation but with different outcomes (different jump heights in my case). -Virtual Machine - Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz -...

Adding on my previous message, I found this reference in IPOPT page https://coin-or.github.io/Ipopt/OPTIONS.html#OPT_Mumps_Linear_Solver mumps_mem_percent: Percentage increase in the estimated working space for MUMPS. When significant extra fill-in is caused by numerical pivoting, larger values of m...

Hello everyone, @Evan, can you confirm that your initial error was something like this below? This is Ipopt version 3.12.8, running with linear solver mumps. NOTE: Other linear solvers might be more efficient (see Ipopt documentation). Number of nonzeros in equality constraint Jacobian...: 48902396 ...

I just went through the same problem, and I think I got the fix. I'm not able to use the conda_env.yml directly because (in the time that I tried) it didn't have some libraries that I use, especially pandas. So my workaround was to create a Anaconda python 3.8.13 and run the steps in the documentati...

Hello Matthew and Pasha, I've been looking for references for scaling muscle max isometric forces and other parameters. And the reading suggestion from Nick (thanks Nick) from another post is excellent: Handsfield, G.G., Meyer, C.H., Hart, J.M., Abel, M.F., Blemker, S.S., 2014. Relationships of 35 l...

Great!!!

I will start with that. Thanks a lot for the help.

I will get back here with some results (fingers crossed) or more doubts

Best regards.

Thanks Nick. I will try it down the line. But until then, the challenge to me would be converting the forces from all contact surfaces on the feet to a single vector in the "virtual force platform" file. I already managed to get the sum of all force vectors (X,Y,Z) but not yet the position of the GR...