[svn-r7481] Purpose:

    Bug fix

Description:
    The MPI_File_set_size() routine on ASCI Red is not able to extend files
so that they are larger than 2GB.

Solution:
    Add an extra macro which controls whether MPI_File_set_size() can handle
>2GB offsets or if our "older" way of reading a byte, then writing a byte at
the appropriate offset should be used.

Platforms tested:
    FreeBSD 4.9 (sleipnir)
    h5committest

1 files changed, 23 insertions, 0 deletions

diff --git a/configure b/configure
index ec655f5..e88f2c1 100755
--- a/configure
+++ b/configure
@@ -31541,6 +31541,29 @@ _ACEOF
 
   fi
 
+
+              echo "$as_me:$LINENO: checking if MPI_File_set_size works for files over 2GB" >&5
+echo $ECHO_N "checking if MPI_File_set_size works for files over 2GB... $ECHO_C" >&6
+  if test "${hdf5_cv_mpi_file_set_size_big+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  hdf5_cv_mpi_file_set_size_big=yes
+fi
+
+
+  if test ${hdf5_cv_mpi_file_set_size_big} = "yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define MPI_FILE_SET_SIZE_BIG 1
+_ACEOF
+
+    echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+  else
+    echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+  fi
+
 fi
 
 echo "$as_me:$LINENO: checking for I/O filters" >&5