Added <output_path> option in settings.xml.

docs/source/usersguide/input.rst

@@ -212,6 +212,15 @@ sections summary file to be written, this element should be given as:
 
   *Default*: "tallies"
 
+``<output_path>`` Element
+-------------------------
+
+The ``<output_path>`` element specifies an absolute or relative path where all
+output files should be written to. The specified path must exist or else OpenMC
+will abort.
+
+  *Default*: Current working directory
+
 ``<ptables>`` Element
 ---------------------
 

src/input_xml.F90

@@ -71,6 +71,7 @@ contains
 
     ! Initialize XML scalar variables
     cross_sections_ = ''
+    output_path_ = ''
     verbosity_ = 0
     energy_grid_ = 'union'
     seed_ = 0_8
@@ -101,6 +102,14 @@ contains
       path_cross_sections = trim(cross_sections_)
     end if
 
+    ! Set output directory if a path has been specified on the <output_path>
+    ! element
+    if (len_trim(output_path_) > 0) then
+      path_output = output_path_
+      if (.not. ends_with(path_output, "/")) &
+           path_output = trim(path_output) // "/"
+    end if
+
     ! Make sure that either criticality or fixed source was specified
     if (eigenvalue_ % batches == 0 .and. fixed_source_ % batches == 0 &
          .and. criticality_ % batches == 0) then

src/templates/settings.rnc

@@ -43,6 +43,8 @@ element settings {
   element output { list { 
     ( "summary" | "cross_sections" | "tallies" )+ } }? &
 
+  element output_path { xsd:string { maxLength = "255" } }? &
+
   element ptables { xsd:boolean }? &
 
   element run_cmfd { xsd:boolean }? &

src/templates/settings_t.xml

@@ -51,6 +51,7 @@
   <variable name="fixed_source_" tag="fixed_source" type="run_parameters_xml" />
   <variable name="no_reduce_" tag="no_reduce" type="word" length="5" />
   <variable name="output_" tag="output" type="word-array" length="20" />
+  <variable name="output_path_" tag="output_path" type="word" length="255" />
   <variable name="ptables_" tag="ptables" type="word" length="5" />
   <variable name="run_cmfd_" tag="run_cmfd" type="word" length="5" />
   <variable name="seed_" tag="seed" type="integer" />