Option to add metadata to all HDF5 files

Author: Martin D. Weinberg

src/OutHDF5.H

@@ -16,7 +16,7 @@
     @param checkpt sets checkpoint mode: write a real8 snapshot with a unique filename
     @param preserve prevents overwrite of snapshot files
     @param expconfig set to true stashes the YAML configuration file in the HDF5 file
-
+    @param allmeta set to true writes all meta data to each HDF5 file
 */
 class OutHDF5 : public Output
 {
@@ -25,7 +25,7 @@ private:
 
   std::string filename;
   bool real4=true, real8=false, ids=true, gadget4=false, chkpt=false;
-  bool overwrite=false, expconfig=true, timer;
+  bool overwrite=false, expconfig=true, allmeta=false, timer;
   unsigned write_flags;
   int nbeg;
   void initialize(void);
@@ -63,6 +63,7 @@ public:
     \param checkpt set to true for checkpoint mode
     \param preserve set to true prevents overwrite of snapshot files
     \param expconfig set to true stashes the YAML configuration file in the HDF5 file
+    \param allmeta set to true writes all meta data to each HDF5 file
   */
   void Run(int nstep, int mstep, bool last);
 

src/OutHDF5.cc

@@ -35,7 +35,8 @@ OutHDF5::valid_keys = {
   "preserve",
   "H5compress",
   "H5chunk",
-  "expconfig"
+  "expconfig",
+  "allmeta"
 };
 
 OutHDF5::OutHDF5(const YAML::Node& conf) : Output(conf)
@@ -124,6 +125,9 @@ void OutHDF5::initialize()
     if (Output::conf["expconfig"])
       expconfig = Output::conf["expconfig"].as<bool>();
 
+    if (Output::conf["allmeta"])
+      allmeta = Output::conf["allmeta"].as<bool>();
+
     // Default HDF5 compression is no compression.  By default,
     // shuffle is on unless turned off manually.
     //
@@ -298,7 +302,7 @@ void OutHDF5::RunGadget4(const std::string& path)
 
       // Only attach metadata to the first file
       //
-      if (myid==0) {
+      if (allmeta or myid==0) {
 
 	int dp = 1;
 	header.createAttribute("Flag_DoublePrecision", dp);
@@ -535,7 +539,7 @@ void OutHDF5::RunPSP(const std::string& path)
 
       // Only attach metadata to first process
       //
-      if (myid==0) {
+      if (allmeta or myid==0) {
 	int dp = real4 ? 0 : 1;
 	writeScalar(header, "Flag_DoublePrecision", dp);