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<TITLE>History of <TT>Mpich</TT></TITLE>
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<HR><H1><A NAME="Node60">History of Mpich</a></H1>
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<P>
  
<P> 
<TT>Mpich</TT> was developed during the MPI standards process to provide  
feedback to the MPI Forum on implementation and usability issues.  
With the release of the MPI standard, <TT>mpich</TT> was designed to provide  
an implementation of the MPI standard that could replace the  
proprietary message-passing systems on the massively parallel  
computers of the day, such as the Intel Paragon, IBM SP, and TMC CM5.  
<TT>Mpich</TT> used an early version of the abstract device interface (ADI),  
based on the Chameleon [<a href="node66.htm#-Bib11">11</a>] portability system, to provide  
a light-weight implementation layer.    
To enable development on desktop systems, a device layered on top of  
the P4 [<a href="node66.htm#-Bib1">1</a>] system was used.  Over time, other devices were  
developed; as systems have vanished (e.g., the TMC CM5 and the Ncube),  
these devices have been dropped from our distribution.  Because  
<TT>mpich</TT> used P4 for workstation networks, <TT>mpich</TT> has supported both  
MIMD programming and heterogeneous clusters from the very beginning.  
<P> 
Because <TT>mpich</TT> was designed to enable ports to other systems, many  
parallel computer vendors and research groups have used <TT>mpich</TT> as the  
basis for their implementation.  Many users are now familar only with  
the version of <TT>mpich</TT> that uses the <tt>ch_p4</tt> device for  
workstation and Beowulf clusters.  However, <TT>mpich</TT> continues to  
support other systems and continues to serve as a platform for  
research into MPI implementations.  
<P> 

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