1. run 'cd scripts'
2. change <path-to-your-folder>, e.g., /projects/xyz/
3. load modules including python, pytorch, and cuda
4.
run './GPUrun_0.sh' on one machine
run './GPUrun_1.sh' on another machin
make sure these two machines can access to the same file specified in <path-to-your-folder>/sharedfile