Reducing particle count for CPU run.

Profugus/Source/Inputs/c5g7_3d_cpu_1node.xml

@@ -67,7 +67,7 @@
     <Parameter name="device_id" type="int" value="0"/>
     <Parameter name="problem_name" type="string" value="c5g7_3d"/>
     <Parameter name="do_transport" type="bool" value="true"/>
-    <Parameter name="Np" type="int" value="10000000"/>
+    <Parameter name="Np" type="int" value="1000000"/>
     <Parameter name="num_cycles" type="int" value="10"/>
     <Parameter name="num_inactive_cycles" type="int" value="5"/>
     <Parameter name="architecture" type="string" value="cpu"/>