[Boost-users] boost MPI error MPI_ERR_TRUNCATE: message truncated

Subject: [Boost-users] boost MPI error MPI_ERR_TRUNCATE: message truncated
From: Jack Bryan (dtustudy68_at_[hidden])
Date: 2010-07-07 11:43:02

Dear All:
I need to transfer some messages from workers master node on MPI cluster with Open MPI.
I use boost MPI API in my program. 
The number of messages is fixed. 
When I increase the number of worker nodes, i got error: 
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terminate called after throwing an instance of 'boost::exception_detail::clone_impl<boost::exception_detail::error_info_injector<boost::mpi::exception> >'  what():  MPI_Unpack: MPI_ERR_TRUNCATE: message truncated[n231:45873] *** Process received signal ***[n231:45873] Signal: Aborted (6)[n231:45873] Signal code:  (-6)[n231:45873] [ 0] /lib64/libpthread.so.0 [0x3c50e0e4c0][n231:45873] [ 1] /lib64/libc.so.6(gsignal+0x35) [0x3c50230215][n231:45873] [ 2] /lib64/libc.so.6(abort+0x110) [0x3c50231cc0]

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For 40 workers , it works well. 
But for 50 workers, it got this error. 
The largest message size is not more then 72 bytes. 
Any help is appreciated. 
thanks
Jack
July 7 2010 		 	   		  
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