Re: [OMPI users] Is this an OpenMPI bug?
On Feb 20, 2009, at 6:54 PM, -Gim wrote: I am trying to use the mpi_bcast function in fortran. I am using open-mpi-v-1.2.7 Say x is a real variable of size 100. np =100 I try to bcast this to all the processors. I use call mpi_bcast(x,np,mpi_real,0,ierr) Aren't you missing the communicator argument in there? -- Jeff Squyres Cisco Systems
Re: [OMPI users] Is this an OpenMPI bug?
When you say "a real variable", you mean default real, no crazy implicit typing or anything? I think if x is real(8) you'd see what you say you see. On Fri, 2009-02-20 at 18:54 -0500, -Gim wrote: > I am trying to use the mpi_bcast function in fortran. I am using > open-mpi-v-1.2.7 > > Say x is a real variable of size 100. np =100 I try to bcast this to > all the processors. > > I use call mpi_bcast(x,np,mpi_real,0,ierr) > > When I do this and try to print the value from the resultant > processor, exactly half the values gets broadcast. In this case, I > get 50 correct values in the resultant processor and rest are junk. > Same happened when i tried with np=20.. Exactly 10 values gets > populated and rest are junk.!! > > ps: I am running this in a single processor. ( Just testing purposes ) > I run this with "mpirun -np 4 " > > Cheerio, > Gim > ___ > users mailing list > us...@open-mpi.org > http://www.open-mpi.org/mailman/listinfo.cgi/users
[OMPI users] Is this an OpenMPI bug?
I am trying to use the mpi_bcast function in fortran. I am using open-mpi-v-1.2.7 Say x is a real variable of size 100. np =100 I try to bcast this to all the processors. I use call mpi_bcast(x,np,mpi_real,0,ierr) When I do this and try to print the value from the resultant processor, exactly half the values gets broadcast. In this case, I get 50 correct values in the resultant processor and rest are junk. Same happened when i tried with np=20.. Exactly 10 values gets populated and rest are junk.!! ps: I am running this in a single processor. ( Just testing purposes ) I run this with "mpirun -np 4 " Cheerio, Gim
