[OMPI users] Redefining MPI_BOOL depending of sizeof(bool)

Hello, in a code that I am currently reading I have found that code: template struct MPI_Select_unsigned_integer_datatype; template <> struct MPI_Select_unsigned_integer_datatype<1> { static MPI_Datatype datatype; }; MPI_Datatype MPI_Select_unsigned_integer_datatype<1>::datatype =

Re: [OMPI users] Redefining MPI_BOOL depending of sizeof(bool)

Am 29.03.2018 um 09:58 schrieb Florian Lindner: > #define MPI_BOOL MPI_Select_unsigned_integer_datatype::datatype > > > It redefines MPI_BOOL based on the size of bool. I wonder if this is needed > and why? > > I was speculating that the compiler could pack multiple bools in

Re: [OMPI users] Redefining MPI_BOOL depending of sizeof(bool)

> Am 29.03.2018 um 09:58 schrieb Florian Lindner: >> #define MPI_BOOL MPI_Select_unsigned_integer_datatype::datatype >> >> It redefines MPI_BOOL based on the size of bool. I wonder if this is needed >> and why? >> >> I was speculating that the compiler could pack multiple bools in

Re: [OMPI users] Old version openmpi 1.2 support infiniband?

Kaiming Ouyang writes: > Hi Jeff, > Thank you for your advice. I will contact the author for some suggestions. > I also notice I may port this old version library to new openmpi 3.0. I > will work on this soon. Thank you. I haven't used them, but at least the profiling part,

Re: [OMPI users] libmpi_cxx

You need to configure with --enable-mpi-cxx -- the Open MPI C++ bindings are not built by default. Can I ask what software you are using that requires the MPI C++ bindings? I ask because the MPI C++ bindings were deprecated in the MPI-2.2 standard in 2009, and were formally deleted from the

Re: [OMPI users] libmpi_cxx

Hi Durga, This is only my interpretation, but they were never that appealing, nor very C++-like, and people mostly kept using the C interface. If you want to have a real C++ interface for MPI, have a look at Boost MPI (http://www.boost.org/doc/libs/1_64_0/doc/html/mpi.html ) If the C++ MPI

Re: [OMPI users] libmpi_cxx

Elemental has very nice C++ wrappers to MPI features. If C++ is your thing, you may want to take a look (https://github.com/elemental/Elemental/ ) There are a few other good projects you can find on GitHub that wrap MPI in modern C++ syntax. None are complete AFAIK but I don’t think that matters

[OMPI users] Linkage problem

Hello, I would like to use openmpi with a software called LAMMPS. I know it is possible when compiling the software to indicate it to use it with openmpi. However when I do that I have a warning message telling me that the linkage could not have been done (I specified the path for openmpi

Re: [OMPI users] libmpi_cxx

On Mar 29, 2018, at 7:14 AM, Maxime Boissonneault wrote: > > If the C++ MPI bindings had been similar to Boost MPI, they would probably > have been adopted more widely and may still be alive. FYI: the initial C++ bindings that were proposed (by me!) to