diff --git a/analysis/python/astar/data/read.py b/analysis/python/astar/data/read.py
index 5142019..100780c 100644
--- a/analysis/python/astar/data/read.py
+++ b/analysis/python/astar/data/read.py
@@ -21,14 +21,27 @@
 
 import numpy as np
 
+def set_dtype(endian, AcRealSize):
+    if endian == 0:
+        en = '>'
+    elif endian == 1: 
+        en = '<'
+    type_instruction = en + 'f' + str(AcRealSize)
+    print("type_instruction", type_instruction)
+    my_dtype = np.dtype(type_instruction)
+    return my_dtype
+
 def read_bin(fname, fdir, fnum, minfo, numtype=np.longdouble):
     '''Read in a floating point array'''
     filename = fdir + fname + '_' + fnum + '.mesh'
     datas = np.DataSource()
     read_ok = datas.exists(filename)
+
+    my_dtype = set_dtype(minfo.contents['endian'], minfo.contents['AcRealSize'])
+
     if read_ok:
         print(filename)
-        array = np.fromfile(filename, dtype=numtype)
+        array = np.fromfile(filename, dtype=my_dtype)
 
         timestamp = array[0]
 
@@ -52,6 +65,9 @@ def read_meshtxt(fdir, fname):
         if line[0] == 'int':
             contents[line[1]] = np.int(line[2])
             print(line[1], contents[line[1]])
+        elif line[0] == 'size_t':
+            contents[line[1]] = np.int(line[2])
+            print(line[1], contents[line[1]])
         elif line[0] == 'int3':
             contents[line[1]] = [np.int(line[2]), np.int(line[3]), np.int(line[4])]
             print(line[1], contents[line[1]])
diff --git a/src/standalone/simulation.cc b/src/standalone/simulation.cc
index 7011b4b..86d1ace 100644
--- a/src/standalone/simulation.cc
+++ b/src/standalone/simulation.cc
@@ -63,7 +63,7 @@ write_mesh_info(const AcMeshInfo* config)
     // Determine endianness
     unsigned int EE = 1;
     char *CC = (char*) &EE;
-    const int endianness = (int) *C; 
+    const int endianness = (int) *CC; 
     // endianness = 0 -> big endian 
     // endianness = 1 -> little endian