Re: [Boost-users] Boost test and openmpi

Subject: Re: [Boost-users] Boost test and openmpi
From: Martin Vymazal (martin.vymazal_at_[hidden])
Date: 2014-03-21 06:27:13

Hi,

 it doesn't work for me. I tried the following code:

/// Generate automatically the 'main' function for the test module
#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_MODULE mpi_test
#include <boost/test/unit_test.hpp>

#include <iostream>
#include "mpi.h"

struct MPIFixture
{
  MPIFixture()
  {
    std::cout << "Global fixture constructor:" << std::endl;
    int argc    = boost::unit_test::framework::master_test_suite().argc;
    char** argv = boost::unit_test::framework::master_test_suite().argv;

    MPI_Init(&argc,&argv);

    int is_initialized;
    int is_finalized;

    MPI_Initialized(&is_initialized);
    MPI_Finalized(&is_finalized);
    std::cout << "MPI environment is initialized: " << is_initialized << 
std::endl;
    std::cout << "MPI environment is finalized: " << is_finalized << 
std::endl;

  }

  ~MPIFixture()
  {
    std::cout << "Global fixture destructor" << std::endl;

    int is_initialized;
    int is_finalized;

    MPI_Initialized(&is_initialized);
    MPI_Finalized(&is_finalized);

    std::cout << "MPI environment is initialized: " << is_initialized << 
std::endl;
    std::cout << "MPI environment is finalized: " << is_finalized << 
std::endl;

    MPI_Finalize();

    MPI_Initialized(&is_initialized);
    MPI_Finalized(&is_finalized);

    std::cout << "MPI environment is initialized: " << is_initialized << 
std::endl;
    std::cout << "MPI environment is finalized: " << is_finalized << 
std::endl;
  }
};

struct MyTestSuiteFixture { };

BOOST_GLOBAL_FIXTURE( MPIFixture )

BOOST_FIXTURE_TEST_SUITE( MyTestSuite, MyTestSuiteFixture )

BOOST_AUTO_TEST_CASE( dummy_test )
{
  std::cout << "Running dummy test case" << std::endl;
}

BOOST_AUTO_TEST_SUITE_END()

The output when running with mpirun:

Global fixture constructor:
MPI environment is initialized: 1
MPI environment is finalized: 0
Running 1 test case...
Running dummy test case
Global fixture destructor
MPI environment is initialized: 1
MPI environment is finalized: 0
MPI environment is initialized: 1
MPI environment is finalized: 1

Output when running directly the executable:

Global fixture constructor:
MPI environment is initialized: 1
MPI environment is finalized: 0
Running 1 test case...
Running dummy test case
Global fixture destructor
MPI environment is initialized: 1
MPI environment is finalized: 0
Segmentation fault (core dumped)

I'm using boost 1.55.0 and gcc 4.8.2 on linux.

Best regards,

   Martin Vymazal

On Friday 21 February 2014 10:38:21 Rhys Ulerich wrote:
> > A global fixture seems like a more appropriate solution than implementing
> > main().
> > 
> > BOOST_GLOBAL_FIXTURE
> 
> Indeed.  Something like the following works just fine:
> 
> struct MPIFixture {
>     MPIFixture()  { MPI_Init(NULL, NULL); }
>     ~MPIFixture() { MPI_Finalize(); }
> };
> BOOST_GLOBAL_FIXTURE(MPIFixture);
> 
> 
> - Rhys
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