only write radiation_init info to masterproc

Author: brian-eaton

doc/ChangeLog

@@ -85,6 +85,10 @@ cime_config/testdefs/testmods_dirs/cam/outfrq3s_cosp/user_nl_cam
 . add CS_RAINCERT, CS_RAINHARD to the fexcl1.  The CS_* diagnostics are known
   to depend on task count.
 
+src/physics/rrtmgp/radiation.F90
+. Fix an info message from radiation_init that should only be written
+  to masterproc.
+
 src/physics/simple/frierson_cam.F90
 . remove PREC_DP from pbuf; it wasn't being used.  This was causing a
   restart failure when PRECC was requested in the output.  

src/physics/rrtmgp/radiation.F90

@@ -468,8 +468,11 @@ subroutine radiation_init(pbuf2d)
       ktoprad = 2
       nlaycam = pver
       nlay = nlay+1 ! reassign the value so later code understands to treat this case like nlay==pverp
-      write(iulog,*) 'RADIATION_INIT: Special case of 1 model interface at p < 1Pa. Top layer will be INCLUDED in radiation calculation.'
-      write(iulog,*) 'RADIATION_INIT: nlay = ',nlay, ' same as pverp: ',nlay==pverp
+      if (masterproc) then
+         write(iulog,*) 'RADIATION_INIT: Special case of 1 model interface at p < 1Pa. Top layer will be INCLUDED in radiation calculation.'
+         write(iulog,*) 'RADIATION_INIT: Top layer will be INCLUDED in radiation calculation.'
+         write(iulog,*) 'RADIATION_INIT: nlay = ',nlay, ' same as pverp: ',nlay==pverp
+      end if
    else
       ! nlay < pverp.  nlay layers are used in radiation calcs, and they are
       ! all CAM layers.