From 2df622d3e73a4c3b4cac7114efbb98e8b9382370 Mon Sep 17 00:00:00 2001
From: cott <>
Date: Tue, 6 Jan 2004 07:56:00 +0000
Subject: We can now recover parameters.

darcs-hash:20040106075639-19929-06e2883236b3a6710cabb2229a18e62219bd5452.gz
---
 .../src/checkpointrestart.cc                       | 34 ++++++++++++++++++++--
 .../CarpetIOFlexIOCheckpoint/src/ioflexio.hh       | 34 +++++++++++++++++++++-
 2 files changed, 65 insertions(+), 3 deletions(-)

(limited to 'CarpetAttic')

diff --git a/CarpetAttic/CarpetIOFlexIOCheckpoint/src/checkpointrestart.cc b/CarpetAttic/CarpetIOFlexIOCheckpoint/src/checkpointrestart.cc
index 89d7816bc..634d137ba 100644
--- a/CarpetAttic/CarpetIOFlexIOCheckpoint/src/checkpointrestart.cc
+++ b/CarpetAttic/CarpetIOFlexIOCheckpoint/src/checkpointrestart.cc
@@ -48,7 +48,7 @@
 #include "ioflexio.hh"
 
 extern "C" {
-  static const char* rcsid = "$Header: /home/eschnett/C/carpet/Carpet/CarpetAttic/CarpetIOFlexIOCheckpoint/src/checkpointrestart.cc,v 1.15 2004/01/05 22:54:16 cott Exp $";
+  static const char* rcsid = "$Header: /home/eschnett/C/carpet/Carpet/CarpetAttic/CarpetIOFlexIOCheckpoint/src/checkpointrestart.cc,v 1.16 2004/01/06 08:56:39 cott Exp $";
   CCTK_FILEVERSION(Carpet_CarpetIOFlexIO_checkpointrestart_cc);
 }
 
@@ -224,7 +224,6 @@ int CarpetIOFlexIO_Recover (cGH* cgh, const char *basefilename, int called_from)
    return (RecoverParameters (reader));
   }
 
-
   if (myproc == 0)
     delete reader;
 
@@ -287,6 +286,37 @@ int CarpetIOFlexIO_Recover (cGH* cgh, const char *basefilename, int called_from)
       delete reader;
     }
 
+#ifdef CCTK_MPI
+  /* Broadcast the parameter buffer size to all processors */
+  /* NOTE: We have to use MPI_COMM_WORLD here
+     because CARPET_COMM_WORLD is not yet set up at parameter recovery time.
+     We also assume that CARPET_MPI_INT4 is a compile-time defined datatype. */
+    CACTUS_MPI_ERROR (MPI_Bcast (&parameterSize, 1, CARPET_MPI_INT4, 0,
+				 MPI_COMM_WORLD));
+#endif
+
+    if (parameterSize > 0)
+      {
+#ifdef CCTK_MPI
+	if (myproc)
+	  {
+	    parameters = (char*) malloc (parameterSize + 1);
+	  }
+	
+    CACTUS_MPI_ERROR (MPI_Bcast (parameters, parameterSize + 1, CARPET_MPI_CHAR,
+				 0, MPI_COMM_WORLD));
+#endif
+
+    IOUtil_SetAllParameters (parameters);
+
+    free (parameters);
+  }
+
+    /* return positive value for success otherwise negative */
+    retval = (parameterSize > 0 ? 1 : -1);
+
+    return (retval);
+
 
     CCTK_WARN (-1,"STOPSTOPSTOP");
 
diff --git a/CarpetAttic/CarpetIOFlexIOCheckpoint/src/ioflexio.hh b/CarpetAttic/CarpetIOFlexIOCheckpoint/src/ioflexio.hh
index 73d50ca9c..be467adfc 100644
--- a/CarpetAttic/CarpetIOFlexIOCheckpoint/src/ioflexio.hh
+++ b/CarpetAttic/CarpetIOFlexIOCheckpoint/src/ioflexio.hh
@@ -1,8 +1,9 @@
-// $Header: /home/eschnett/C/carpet/Carpet/CarpetAttic/CarpetIOFlexIOCheckpoint/src/ioflexio.hh,v 1.7 2003/12/01 13:15:21 cott Exp $
+// $Header: /home/eschnett/C/carpet/Carpet/CarpetAttic/CarpetIOFlexIOCheckpoint/src/ioflexio.hh,v 1.8 2004/01/06 08:56:39 cott Exp $
 
 #ifndef CARPETIOFLEXIO_HH
 #define CARPETIOFLEXIO_HH
 
+
 #include <vector>
 
 #include "cctk.h"
@@ -54,6 +55,37 @@
 #elif   CCTK_REAL_PRECISION_16
 #define FLEXIO_REAL    FLEXIO_REAL16
 #endif
+
+/* some macros needed for recovery */
+#ifdef CCTK_MPI
+
+#define CACTUS_MPI_ERROR(fn_call)                                             \
+          do {                                                                \
+            int errcode;                                                      \
+                                                                              \
+            if ((errcode = fn_call) != MPI_SUCCESS)                           \
+            {                                                                 \
+              char mpi_error_string[MPI_MAX_ERROR_STRING+1];                  \
+              int resultlen;                                                  \
+                                                                              \
+              MPI_Error_string (errcode, mpi_error_string, &resultlen);       \
+              fprintf (stderr, "MPI call '%s' returned error code %d (%s)\n", \
+                               #fn_call, errcode, mpi_error_string);          \
+              fprintf(stderr, "At line %d of file %s\n", __LINE__, __FILE__); \
+            }                                                                 \
+          } while (0)
+
+
+#ifdef  CCTK_INT4
+#define CARPET_MPI_INT4  (sizeof (CCTK_INT4) == sizeof (int) ? MPI_INT :        \
+                        sizeof (CCTK_INT4) == sizeof (short) ? MPI_SHORT :    \
+                        MPI_DATATYPE_NULL)
+#endif
+
+#define CARPET_MPI_CHAR      MPI_CHAR
+
+#endif
+
 namespace CarpetIOFlexIO {
   
   // Variable definitions
-- 
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