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Subject: Re: [OMPI users] OMPI vs. network socket communcation
From: Jack Bryan (dtustudy68_at_[hidden])
Date: 2011-05-02 11:30:12


Thanks for your reply.
MPI is for academic purpose. How about business applications ?
What kinds of parallel/distributed computing environment do the financial institutionsuse for their high frequency trading ?
Any help is really appreciated.
Thanks,
Date: Mon, 2 May 2011 08:34:33 -0400
From: terry.dontje_at_[hidden]
To: users_at_[hidden]
Subject: Re: [OMPI users] OMPI vs. network socket communcation

  

    
  
  
    On 04/30/2011 08:52 PM, Jack Bryan wrote:
    
      
      Hi, All:
      

      
      What is
          the relationship between MPI communication and socket
          communication ?
      

        
    
    MPI may use socket communications to do communications between two
    processes. Aside from that they are used for different purposes.

    
      Is the
          network socket programming better than MPI ?

        
    
    Depends on what you are trying to do. If you are writing a parallel
    program that may run in multiple environments with different types
    of performing protocols available for its use then MPI is probably
    better. If you are looking to do simple client/server type
    programming then socket program might have an advantage.

    
      

        
      I am a
          newbie of network socket
          programming.
      

        
      I do not know which one is better for
          parallel/distributed computing ?

        
    
    IMO MPI.

    
      

        
      I know that network socket is unix-based
          file communication between server and client.
      

        
      If they can also be used for parallel
          computing, how MPI can work better than them ?

        
    
    There is a lot of stuff that MPI does behind the curtain to make a
    parallel applications life a lot easier. As far as performance MPI
    will not perform better than sockets if it is using sockets as the
    underlying model. However, the performance difference should be
    negligible which makes all the other stuff MPI does for you a big
    win.

    
      

        
      I know
          MPI is for homogeneous cluster system and network socket is
          based on internet TCP/IP.

        
    
    What do you mean by homogeneous cluster? There are some MPIs that
    can work among different platforms and even different OSes (though
    some initial setup may be necessary).

    

    Hope this helps,

    

    

    --

      
      Message body
      

      Terry D. Dontje | Principal Software Engineer

      Developer Tools
        Engineering | +1.781.442.2631

       Oracle - Performance
          Technologies

       95 Network Drive,
        Burlington, MA 01803

        Email terry.dontje_at_[hidden]

      
      

        
          
            
              
                 
              
            
          
        
        

        

      
    
  

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