2014-10-03 13:00 GMT+00:00 Diego Avesani <diego.aves...@gmail.com>: > Dear all, dear Nick, > thanks lot. > I have understood something, so I have create this variable type: > > TYPE tParticle > SEQUENCE > INTEGER :: ip > INTEGER :: fake > REAL :: RP(2) > REAL :: QQ(4) > END TYPE tParticle > But did it work? :) Remember to tell mpi about the padding (add one more type). Also, for cosmetic reasons I would do this: TYPE tParticle sequence integer :: ip real :: rp(2), qq(4) ! THIS IS A PADDING VARIABLE (SHOULD NEVER BE USED) integer :: pad end type
> > In the point number 2, do you mean to insert some align options? > Search around for your compiler. However, this will be "forcing" your program to certain compilers, I would not recommend this (unless you have specific reasons anyway). > > For the point number 3, I do not understand where where I am wrong. This > is my code > > > TYPES(1)=MPI_INTEGER > Here it is wrong. If you compile with -i8 your integer is not an integer, but a long. Your displacements should be correct, but not your designation of the data-type for mpi. > > TYPES(2)=MPI_DOUBLE_PRECISION > TYPES(3)=MPI_DOUBLE_PRECISION > nBLOCKS(1)=2 > nBLOCKS(2)=2 > nBLOCKS(3)=4 > > DISPLACEMENTS(1)=0 > DISPLACEMENTS(2)=sizeof(dummy%ip)+sizeof(dummy%fake) > > > DISPLACEMENTS(3)=sizeof(dummy%ip)+sizeof(dummy%fake)+sizeof(dummy%RP(1))+sizeof(dummy%RP(2)) > > CALL > MPI_TYPE_CREATE_STRUCT(3,nBLOCKS,DISPLACEMENTS,TYPES,MPI_PARTICLE_TYPE,MPI%ierr) > > This is how I compile > > mpif90 -r8 *.f90 > No, that was not what you said! You said you compiled it using: mpif90 -r8 -i8 *.f90 > Again, really really Thanks > > Diego > > > On 3 October 2014 14:30, Nick Papior Andersen <nickpap...@gmail.com> > wrote: > >> I would never compile a fortran program relying on a specific compiler >> option! I would never use r8/i8! >> I would highly encourage you to explicitly set the precision of each >> variable if you need specific variable precision. There are plenty of >> tutorials around for this (selected_real/int_kind). >> >> Secondly, the warning of mis-alignment is due to the data type not being >> a multiple of 8. You can pad it with additional bytes to reach a multiple >> of 8 (in this case add a fake integer, or character(len=4)). >> I do not know if sequence is needed for the mpi data type (I guess it is >> needed when dealing with arrays of types, but again, I am not fully sure >> about this...). >> >> A couple of options: >> 1) I think sequence should work if you pad it to align with 8 bytes. >> 2) add code that is directive specified against the compiler to tell the >> exact alignment of the data type >> 3) Your compilation of -r8 -i8 does probably not work due to the integer >> being long, and hence your data type of MPI_INTEGER (you did not tell us >> whether you corrected this) >> >> >> >> >> 2014-10-03 11:07 GMT+00:00 Diego Avesani <diego.aves...@gmail.com>: >> >>> Dears, >>> First of all. Really really thanks for you help, I am learning a lot. >>> Second: >>> I try to study the MPI_TYPE_CREATE_STRUCT and all the things look >>> correct. >>> >>> I use Intel Fortran compiler and when I compile with -r8 means that I am >>> compiling in double precision. >>> >>> About Nick suggestion: >>> Coding >>> >>> TYPE tParticle >>> SEQUENCE >>> INTEGER :: ip >>> REAL :: RP(2) >>> REAL :: QQ(4) >>> END TYPE tParticle >>> >>> >>> if I compile with >>> mpif90 -r8 *.f90 >>> >>> I get the following error: >>> warning #6379: The structure contains one or more misaligned fields. >>> [TPARTICLE] TYPE tParticle >>> >>> >>> I can only compile as: >>> mpif90 -r8 -i8 *.f90 >>> >>> But I get the same error: >>> >>> An error occurred in MPI_Cart_create >>> [diedroLap:12267] *** reported by process >>> [139817172008961,139814070386689] >>> [diedroLap:12267] *** on communicator MPI_COMM_WORLD >>> [diedroLap:12267] *** MPI_ERR_OTHER: known error not in list >>> [diedroLap:12267] *** MPI_ERRORS_ARE_FATAL (processes in this >>> communicator will now abort, >>> [diedroLap:12267] *** and potentially your MPI job) >>> >>> >>> >>> What I can do? >>> Thanks a lot >>> >>> >>> >>> On 3 October 2014 08:15, Nick Papior Andersen <nickpap...@gmail.com> >>> wrote: >>> >>>> sequence >>> >>> >>> >>> >>> Diego >>> >>> >>> _______________________________________________ >>> users mailing list >>> us...@open-mpi.org >>> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >>> Link to this post: >>> http://www.open-mpi.org/community/lists/users/2014/10/25434.php >>> >> >> >> >> -- >> Kind regards Nick >> >> _______________________________________________ >> users mailing list >> us...@open-mpi.org >> Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users >> Link to this post: >> http://www.open-mpi.org/community/lists/users/2014/10/25435.php >> > > > _______________________________________________ > users mailing list > us...@open-mpi.org > Subscription: http://www.open-mpi.org/mailman/listinfo.cgi/users > Link to this post: > http://www.open-mpi.org/community/lists/users/2014/10/25436.php > -- Kind regards Nick
