On Wed, 2019-03-13 at 22:10 +0000, Sergio None wrote: > Hello. > > > I'm using OpenMPI 3.1.3 on x64 CPU and two ARMv8( Raspberry pi 3). > > > But i'm having some issues with data types that are architecture > dependent, like 'long'. > ---------trimmed---------
> > So my question is: there any way to pass data that don't depend of > architecture? What I do is make a header file I call 'sysdef.h' with #ifdefs for all the systems I use that define types like (for signed 32-bit integer) #ifdef Intel64 typedef int si32 #endif #ifdef ARMv8 typedef long si32 #endif ...etc... [And I have a whole bunch of other useful definitions like MAX_SI32, LONG_SIZE and stuff like that--above is not an actual code excerpt] and then in the makefile put '-DIntel64' or '-DARMv8' or whatever I called it in the sysdef. Then the code should use the typedef names. In the MPI_Send, MPI_Recv calls I usually call the type MPI_BYTE and give the actual lengths in bytes which I compute once at the time of the malloc and store in a global common block. George Reeke _______________________________________________ users mailing list users@lists.open-mpi.org https://lists.open-mpi.org/mailman/listinfo/users
