Remove references to Cheyenne and make it more explicit what to do on…

… different systems, as well as adding Derecho

tools/modify_input_files/README.fsurdat_modifier

@@ -27,10 +27,17 @@ tools/modify_input_files/modify_fsurdat_template.cfg
 
 Instructions
 ------------
-To run on Cheyenne/Casper/Izumi
+To run on various machines:
 1) (Un)load, execute, and activate the following:
+1a) First step to activate conda on your system
+1a) Casper:
 module unload python
 module load conda
+1a) Izumi:
+module load python
+1a) Derecho (nothing needs to be done for this step)
+1a) Elsewhere (do what's needed to activate conda)
+1b) On all systems
 ./py_env_create
 conda activate ctsm_pylib
 (Use "deactivate" to reverse the latter.)

tools/modify_input_files/README.mesh_mask_modifier

@@ -10,10 +10,17 @@ tools/modify_input_files/modify_mesh_template.cfg
 
 Instructions
 ------------
-To run on Cheyenne/Casper/Izumi
+To run on various machines:
 1) (Un)load, execute, and activate the following:
+1a) First step to activate conda on your system
+1a) Casper:
 module unload python
 module load conda
+1a) Izumi:
+module load python
+1a) Derecho (nothing needs to be done
+1a) Elsewhere (do what's needed to activate conda)
+1b) On all systems
 ./py_env_create
 conda activate ctsm_py
 (Use "deactivate" to reverse the latter.)

tools/site_and_regional/README

@@ -3,9 +3,9 @@ $CTSMROOT/tools/site_and_regional/README
 The purpose of this directory is to contain all of the scripts that involve creating CTSM input data files
 for single site as well as regional cases.
 
-The python scripts require the following settings before running on cheyenne:
+The python scripts require the following settings before running:
 
-module load conda
+(Do what's needed to make conda available on your system)
 ../../py_env_create
 conda activate ctsm_pylib