[Haskell] Writing large n-dim un-boxed array of Int32 quickly?

[Rene de Visser]

Hello,

I want to write a multi-dimensional unboxed arrary of Int32 to a file. (And 
also read it back later).

What I tried so far is

import NewBinary.Binary

...
mapM_ (put bin) $ elems array
...

but this was exceedlying slow.

The array contains about 10 000 000 entries. Any suggestions?
Rene.