TMPDIR: Specifying a directory for temporary files

The XL Fortran compiler creates a number of temporary files for use during compilation. An XL Fortran application program creates a temporary file at run time for a file opened with STATUS='SCRATCH'. By default, these files are placed in the directory /tmp.

If you want to change the directory where these files are placed, perhaps because /tmp is not large enough to hold all the temporary files, set and export the TMPDIR environment variable before running the compiler or the application program.

If you explicitly name a scratch file by using the XLFSCRATCH_unit method described below, the TMPDIR environment variable has no effect on that file.