diff options
Diffstat (limited to 'boost/mpi/config.hpp')
| -rw-r--r-- | boost/mpi/config.hpp | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/boost/mpi/config.hpp b/boost/mpi/config.hpp index acbdc78daa..ff91b17c35 100644 --- a/boost/mpi/config.hpp +++ b/boost/mpi/config.hpp @@ -20,10 +20,17 @@ #include <mpi.h> #include <boost/config.hpp> -/** @brief Define this macro to avoid expensice MPI_Pack/Unpack calls on - * homogeneous machines. -*/ -//#define BOOST_MPI_HOMOGENEOUS +/** @brief Comment this macro is you are running in an heterogeneous environement. + * + * When this flags is enabled, we assume some simple, POD like, type can be + * transmited without paying the cost of portable serialization. + * + * Comment this if your platform is not homogeneous and that portable + * serialization/deserialization must be performed. + * + * It you do so, check that you MPI implementation supports thats kind of environement. + */ +#define BOOST_MPI_HOMOGENEOUS // If this is an MPI-2 implementation, define configuration macros for // the features we are interested in. @@ -71,10 +78,20 @@ # define BOOST_MPI_CALLING_CONVENTION #endif +/** @brief Indicates that MPI_Bcast supports MPI_BOTTOM. + * + * Some implementations have a broken MPI_Bcast wrt to MPI_BOTTOM. + * BullX MPI and LAM seems to be among them, at least for some versions. + * The `broacast_test.cpp` test `test_skeleton_and_content` can be used to + * detect that. + */ +#define BOOST_MPI_BCAST_BOTTOM_WORKS_FINE + #if defined(LAM_MPI) // Configuration for LAM/MPI # define BOOST_MPI_HAS_MEMORY_ALLOCATION # define BOOST_MPI_HAS_NOARG_INITIALIZATION +# undef BOOST_MPI_BCAST_BOTTOM_WORKS_FINE #elif defined(MPICH_NAME) // Configuration for MPICH #endif |