Some Frequently Used Collective Communication Routines
-
MPI_Barrier (comm)
MPI_Bcast (&buffer,count,datatype,root,comm)
MPI_Scatter (&sendbuf,sendcnt,sendtype,&recvbuf,recvcnt,recvtype,root,comm)
MPI_Gather (&sendbuf,sendcnt,sendtype,&recvbuf,recvcount,recvtype,root,comm)
MPI_Allgather (&sendbuf,sendcount,sendtype,&recvbuf,recvcount,recvtype,comm)
MPI_Reduce (&sendbuf,&recvbuf,count,datatype,op,root,comm)
| MPI Reduction Operation | C Data Types | Fortran Data Type | |||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
MPI_MAX
| maximum
| integer, float
| integer, real, complex
| MPI_MIN
| minimum
| integer, float
| integer, real, complex
| MPI_SUM
| sum
| integer, float
| integer, real, complex
| MPI_PROD
| product
| integer, float
| integer, real, complex
| MPI_LAND
| logical AND
| integer
| logical
| MPI_BAND
| bit-wise AND
| integer, MPI_BYTE
| integer, MPI_BYTE
| MPI_LOR
| logical OR
| integer
| logical
| MPI_BOR
| bit-wise OR
| integer, MPI_BYTE
| integer, MPI_BYTE
| MPI_LXOR
| logical XOR
| integer
| logical
| MPI_BXOR
| bit-wise XOR
| integer, MPI_BYTE
| integer, MPI_BYTE
| MPI_MAXLOC
| max value and location
| float, double and long double
| real, complex,double precision
| MPI_MINLOC
| min value and location
| float, double and long double
| real, complex, double precision
| |
 previous
|  top
|  next |