2 files changed, 44 insertions, 2 deletions
diff --git a/Source/QED/BreitWheelerEngineWrapper.cpp b/Source/QED/BreitWheelerEngineWrapper.cpp
index 97934589a..36d19838c 100644
--- a/Source/QED/BreitWheelerEngineWrapper.cpp
+++ b/Source/QED/BreitWheelerEngineWrapper.cpp
@@ -82,6 +82,40 @@ bool BreitWheelerEngine::are_lookup_tables_initialized () const
     return lookup_tables_initialized;
 }
 
+
+// Writes lookup tables on disk in 'folder'
+// return false if it fails. */
+bool BreitWheelerEngine::write_lookup_tables (
+        std::string folder) const
+{
+    if(!lookup_tables_initialized)
+        return false;
+
+    auto all_data = make_tuple(
+        std::ref(innards.ctrl.chi_phot_min),
+        std::ref(innards.ctrl.chi_phot_tdndt_min),
+        std::ref(innards.ctrl.chi_phot_tdndt_max),
+        std::ref(innards.ctrl.chi_phot_tdndt_how_many),
+        std::ref(innards.ctrl.chi_phot_tpair_min),
+        std::ref(innards.ctrl.chi_phot_tpair_max),
+        std::ref(innards.ctrl.chi_phot_tpair_how_many),
+        std::ref(innards.ctrl.chi_frac_tpair_how_many),
+        std::ref(innards.TTfunc_coords),
+        std::ref(innards.TTfunc_data)); 
+
+    
+       
+
+    char* data_dump =  new char(buf_size);
+
+    size_t count = 0;
+    auto copy_and_advance = [&count] (char* source, char*dest, size_t size) {
+        count += size;
+    };    
+    
+    return true;
+}
+
 //Private function which actually computes the lookup tables
 void BreitWheelerEngine::computes_lookup_tables (
     WarpXBreitWheelerWrapperCtrl ctrl)
diff --git a/Source/QED/BreitWheelerEngineWrapper.h b/Source/QED/BreitWheelerEngineWrapper.h
index aaa94c0ec..a841f48a5 100644
--- a/Source/QED/BreitWheelerEngineWrapper.h
+++ b/Source/QED/BreitWheelerEngineWrapper.h
@@ -3,6 +3,10 @@
 
 #include "QedWrapperCommons.h"
 
+#include<string>
+#include<vector>
+#include<tuple>
+
 //BW ENGINE from PICSAR
 #include "breit_wheeler_engine.hpp"
 
@@ -20,8 +24,8 @@ struct BreitWheelerEngineInnards
     WarpXBreitWheelerWrapperCtrl ctrl;
 
     //Lookup table data
-    amrex::Gpu::ManagedDeviceVector<amrex::Real> TTfunc_coords;
-    amrex::Gpu::ManagedDeviceVector<amrex::Real> TTfunc_data; 
+    amrex::Gpu::ManagedVector<amrex::Real> TTfunc_coords;
+    amrex::Gpu::ManagedVector<amrex::Real> TTfunc_data; 
     //______
 };
 
@@ -84,6 +88,10 @@ public:
     /* \brief Checks if lookup tables are properly initialized */
     bool are_lookup_tables_initialized () const;
 
+    /* \brief Writes lookup tables on disk in 'file'
+     *  return false if it fails. */
+    bool write_lookup_tables (std::string file) const;   
+
 private:
     bool lookup_tables_initialized = false;