How do I flush output to file after each write with a gfortran Fortran 90 program?

Question

I am running a loop in a Fortran 90 program that outputs numerical values to an output file for each iteration of the loop. The problem is that the output is not saved to th

Answer 1

You need to make the output unbuffered. Try setting the GFORTRAN_UNBUFFERED_ALL environment variable to 'y', 'Y' or 1.