Parallel simulation

[Lynda Algerienne]

I am using Omnet++ and in my simulation several nodes can transmit in parallel.
I put in my OMNET.pp   

[General]
 parallel-simulation=true
 parsim-communications-class = "cMPICommunications"
 parsim-synchronization-class = "cNullMessageProtocol"

but I had the following error:

<!> Error: Class "cMPICommunications" not found -- perhaps its code was not 
linked in, or the class wasn't registered via Register_Class()

Can any one help me?

[George Rusiichev]

you have to compile OMNeT++ with MPI support

1. put the path to headers and lib of your MPI instatliton  in configure.user
example:

MPI_CFLAGS="-I /c/omnetpp-4.2.1/DeinoMPI/include"
#MPI_LIBS="-pthread -llammpio -llammpi++ -llamf77mpi -lmpi -llam -laio -laio -lutil"
MPI_LIBS="-L /c/omnetpp-4.2.1/DeinoMPI/lib -lcxx -lmpi"   #SGI

2. do ./configure

3. make

[Rudolf Hornig]

Just to avoid confusion: 

you DO NOT need to use OMNeT++'s parallel simulation support to simulate nodes that can transmit in parallel. OMNeT++ can simulate parallel processes just fine on a single CPU. You will get EXACTLY the same result running omnet on a single processor or using the parallel execution (tough in certain cases the parallel support will give you your results faster).

Rudolf

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[punit gupta]

hii how can we make the node transmit in parallel in omnet++ please let me know