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Questions tagged [boost-mpi]

one of the Boost libraries, a C++-style wrapper around the Message Passing Interface (MPI) library for high-performance distributed computing.

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trying to build Boost MPI, but the lib files are not created. What's going on?

I am trying to run a program with Boost MPI, but the thing is I don't have the .lib. So I try to create one by following the instruction at http://www.boost.org/doc/libs/1_43_0/doc/html/mpi/getting_started.html#mpi.config The instruction says "For…
Karl
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Boost.MPI vs Boost.Asio

Good day! What difference between these libraries? I read MPI's docs and have small experience with asio. For me it's different implementations of network communication and no more. But each of them introduces different abstractions ( I'm not sure…
Iakov Minochkin
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MPI gather/reduce operation confusion?

In the boost tutorial there are examples of gather and reduce operations. The code for gather is as follows: #include #include #include #include namespace mpi = boost::mpi; int main(int argc, char*…
sc_ray
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Multithreading with C++ API

i am trying to parallel my program using OpenMP and sometimes i feels that i am reaching a dead end. I would like to share variables in a function member that i defined (and initialized) in the class. If i understood correctly, it is not possible…
Eagle
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Is there a limit for the message size in mpi using boost::mpi?

I'm currently writing a simulation using boost::mpi on top of openMPI and everything works great. However once I scale up the system and therefore have to send larger std::vectors I get errors. I've reduced the issue to the following…
tik
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Multi-Core Programming. Boost's MPI, OpenMP, TBB, or something else?

I am totally a novice in Multi-Core Programming, but I do know how to program C++. Now, I am looking around for Multi-Core Programming library. I just want to give it a try, just for fun, and right now, I found 3 APIs, but I am not sure which one…
Karl
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Which kind of diagram for parallel code documentation?

I have some parallel code (implemented using MPI) that needs to be documented. I'd like to have a flow-diagram describing it's high-level strategy. What kind of diagram do you use to describe send, receive, broadcast, gather, reduction and other…
baol
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c++: MPI communicator as global variable

I need the MPI world communicator to be accessible in functions/class member functions. But by design/convention, MPI environments and communicators are always defined and initialized at the beginning of int main(). The only, simple solution I can…
cmo
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Send a simple boost graph object via boost:MPI got error

I am making a test by modifying the code 'serialize.cpp' in '/apps/boost_1_56_0/libs/graph/test' and trying to send a boost graph object over the network via boost MPI. It compiled fine, but when I ran the executable using mpirun, I got this…
user3658306
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Can I tell Boost.MPI which class version to use with Boost.Serialization?

I'm using Boost.MPI to exchange messages between processes. Each message carries one of my classes, serialized using Boost.Serialization. I also use the same serialization code to save that class to a file. What I need to send over MPI is smaller…
foxcub
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Boost.MPI: What's received isn't what was sent!

I am relatively new to using Boost MPI. I have got the libraries installed, the code compiles, but I am getting a very odd error - some integer data received by the slave nodes is not what was sent by the master. What is going on? I am using boost…
Alan Reynolds
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boost::mpi blocking IO not interrupted by linux signals

I use boost::mpi, OpenMPI. boost::mpi::communicator::recv (blocking version) is not interrupted by Linux signals. How can my program can be terminated in the right way with SIGTERM signal?
Alex
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fast mpi right rotate large data

I want to move data to right in a circular way once using MPI. That is, if you have 4 nodes, 1->2, 2->3, 3->4, 4->1. I am using boost mpi and have the following code to do it. mat new_W(this->W.n_rows,this->W.n_cols); int p_send = MPI_RANK + 1 >=…
Ramakrishnan Kannan
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Unable to run OpenMPI across more than two machines

When attempting to run the first example in the boost::mpi tutorial, I was unable to run across more than two machines. Specifically, this seemed to run fine: mpirun -hostfile hostnames -np 4 boost1 with each hostname in hostnames as …
rcollyer
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Boost::serialization and boost::mpi to broadcast derived class via base class pointer

I am trying to use boost::mpi::broadcast to send a derived class to all nodes via a base class pointer. To do this, I am using the boost::serialization library to serialize my classes. My code, however, does not compile and I get the errors "class…
user1809481
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