******************* This email originates from outside Imperial. Do not click on links and attachments unless you recognise the sender. If you trust the sender, add them to your safe senders list https://spam.ic.ac.uk/SpamConsole/Senders.aspx to disable email stamping for this address. ******************* Dear all, I would like to know if the latest nektar++ version supports parallel 3DH2D simulation, i.e. 3D configuration based on 1D mesh and Fourier expansions in y,z directions? According to the user-guide, there are ---npz, -npy,--npx options available. However, whenever I run the 3DH2D test case provided in the sample session file ChanFlow_3DH2D_FFT.xml on multiple processors with mpirun -np >1, the solver would crash after initialization, no matter if npx, npy or npz are specified to be greater than 1 or not. The case does work fine however on a single processor. Best regards, Cheng