Hi, On Wed, 13 Dec 2006 13:26:21 -0500 Douglas Gregor <doug.gregor@gmail.com> wrote:
I'll be happy to provide the default constructor, but it will only be available when we can be sure that it can be implemented correctly, either because we've checked out a particular MPI implementation (e.g., LAM-MPI does not need the real argc/argv) or it claims to be MPI-2 compliant.
Open-MPI (the successor of LAM-MPI) is MPI-2 compliant.
I'll add a new macro "BOOST_MPI_HAS_DEFAULT_ENVIRONMENT" that is used to indicate that the default constructor exists.
MPI 1.2 defines the macros MPI_VERSION and MPI_SUBVERSION, which could be used to detect, if MPI_Init(0, 0); is a valid function call, that could be used to implement a default constructor. Heiko -- -- It is not even wrong. (Wolfgang Pauli, 1900-1958) -- Cluster Computing @ http://www.clustercomputing.de -- Heiko Bauke @ http://www.physics.ox.ac.uk/users/bauke