title: viTables and HDFView Memory Errors when opening large CArray
body: <p>Both viTables and HDFView return memory errors when opening a large carray generated from pytables code. It appears that the viewer attempts to read the entire carray into memory and fails. Is this actually the case or am I mising something?</p>
  
  <p>Open the carray directly from a python script and attempting to print the entire carray also produces a memory error.</p>
  
  <p>Creating a hdf5 with a carray as follows:</p>
  
  <pre><code>import tables as pytab
  pytfile = pytab.File("bigcarray.hdf",'w','Test of Big CArray')
  grpData = pytfile.createGroup('/','data')
  pytfile.createCArray(grpData,'TestData',pytab.Float64Atom(), (10000,10000))
  pytfile.close()
  </code></pre>
  
  <p>and opening in either viTable or HDFView results in the memory error problem.</p>