Andrew Moa Blog Site

Recently, when submitting calculations with OpenFOAM and SU2, the error message “Authorization required, but no authorization protocol specified” repeatedly appeared. Although the calculation was eventually completed by ignoring it, the constant error message made me feel uneasy.

I suspected that it was a problem with OpenMPI, and verified it with the following command:

mpirun -np 2 hostname

Sure enough, an error message appeared:

Recently, a problem was discovered that Abaqus and CFX cannot perform calculations on Windows shared folders mounted on Linux. Linux is deployed on a virtual machine. Although there will be no error when starting the calculation program on the local path of the virtual machine, it will cause the virtual disk to occupy more space and have a certain impact on the read and write efficiency.

1. SMB version problem

1.1 SMBv3

When using cifs to mount a shared folder before, I did not pay close attention to the version of the SMB protocol¹. The following command line does not specify the protocol version:

SU2 is an open source CFD solver developed by the School of Aeronautics and Astronautics at Stanford University. It is based on C++ and Python and is similar to OpenFOAM, but does not support polyhedral meshes. Compared with OpenFOAM, SU2 has more advantages in solving high-speed compressible flows.

Download SU2 source code:

mkdir $HOME/su2code && cd $HOME/su2code
# Only clone the latest commit version to speed up downloading
git clone https://github.com/su2code/SU2.git --depth=1

Define environment variables and create a new configuration file su2.env: