In FLASH4 we introduced a new Grid implementation that
depends on Chombo library (see Section 8.7). An
application built with this Grid implementation will include
IO/IOMain/chombo by default. No other I/O implementation is
compatible with Chombo Grid implementation. As before, I/O can
be excluded from an application using the +noio setup shortcut.
Data files are written in standard Chombo file layout in HDF5 format.
The visualization tool VisIt supports Chombo file layout, but
other tools, such as fidlr and sfocu, are incompatible
with Chombo file layout.
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