precice-config-both-init.xml

<?xml version="1.0"?>

<precice-configuration>
  <solver-interface dimensions="3" >
   
    <data:scalar name="Force"  />
    <data:scalar name="Displacement"  />

    <mesh name="Fluid-Mesh">
      <use-data name="Force" />
      <use-data name="Displacement" />
    </mesh>

    <mesh name="Solid-Mesh">
      <use-data name="Force" />
      <use-data name="Displacement" />
    </mesh>

    <participant name="Fluid">
      <use-mesh name="Fluid-Mesh" provide="yes"/>
      <write-data name="Force" mesh="Fluid-Mesh" />
      <read-data  name="Displacement" mesh="Fluid-Mesh" />
    </participant>

    <participant name="Solid">
      <use-mesh name="Fluid-Mesh" from="Fluid"/>
      <use-mesh name="Solid-Mesh" provide="yes"/>
      <mapping:nearest-neighbor   direction="write" from="Solid-Mesh" to="Fluid-Mesh" constraint="conservative"/>
      <mapping:nearest-neighbor direction="read"  from="Fluid-Mesh" to="Solid-Mesh" constraint="consistent" />
      <write-data name="Displacement" mesh="Solid-Mesh" />
      <read-data  name="Force" mesh="Solid-Mesh" />
    </participant>

    <m2n:sockets from="Fluid" to="Solid"/>

    <coupling-scheme:parallel-implicit> 
      <participants first="Fluid" second="Solid" /> 
      <max-time-windows value="2" />
      <time-window-size value="1.0" />
      <max-iterations value="2" />
      <min-iteration-convergence-measure min-iterations="5" data="Force" mesh="Fluid-Mesh"/>
      <exchange data="Force" mesh="Fluid-Mesh" from="Fluid" to="Solid" initialize="true"/>
      <exchange data="Displacement" mesh="Fluid-Mesh" from="Solid" to="Fluid" initialize="true"/>
    </coupling-scheme:parallel-implicit>                           
  </solver-interface>

</precice-configuration>