Dear regCM users,

I have encountered a strange error when using RegCM version 4.7.0. Starting any of the components, terrain/sst/icbc/rtegcmMPI, the following error occurs.

It seems that on line in mod_dynparam.F90

The unit number corresponding to stderr is already opened as READ. 

When printing out the value of this variable, i got 0 (zero). 

For some reason, the system reports this unit as opened for READ (and thus cannot write to it). Is this connected to parameter error_unit in Share/mod_stdio.F90 which is likely a runtime system parameter?

This was compiled with GNU Fortran 

gcc version 4.8.2 20140120 (Red Hat 4.8.2-15) (GCC) 

When compiling and running the code with newer, namely gcc version 5.4.0 20160609 (Ubuntu 5.4.0-6ubuntu1~16.04.10), I do not got this error. However, many of our machines use this older GNU fortran so it would be good to solve this issue.

Thanks for any suggestions

Peter

~]$  ~/src/RegCM-4.7.0/bin/terrainCLM45 ~/work/RegCM/namelists/regcm_test.in

  This is Terrain part of RegCM package version 4 

   SVN Revision: tag-4.7.0 compiled at: data : Oct 19 2018  time: 14:37:03

 : this run start at  : 2018-10-23 10:40:51+0200

 : it is submitted by : svabik

 : it is running on   : kamet5k.priv.troja.mff.cuni.cz

 : in directory       : /home/svabik

                      

At line 462 of file mod_dynparam.F90

Fortran runtime error: Cannot write to file opened for READ