GFORTRAN_UNBUFFERED_PRECONNECTED
—Do not buffer I/O on preconnected unitsThe environment variable named GFORTRAN_UNBUFFERED_PRECONNECTED
controls whether I/O on a preconnected unit (i.e. STDOUT or STDERR) is unbuffered. If the first letter is ‘y
’, ‘Y
’ or ‘1
’, I/O is unbuffered. This will slow down small sequential reads and writes. If the first letter is ‘n
’, ‘N
’ or ‘0
’, I/O is buffered. This is the default.
© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-4.9.3/gfortran/GFORTRAN_005fUNBUFFERED_005fPRECONNECTED.html