By William Gropp
Due to the fact its free up in summer time 1994, the Message Passing Interface (MPI) specification has develop into a regular for message-passing libraries for parallel computations. There exist greater than a dozen implementations on various computing systems, from the IBM SP-2 supercomputer to desktops working home windows NT. The MPI discussion board, which has persisted to paintings on MPI, has lately published MPI-2, a brand new definition that comes with major extensions, advancements, and clarifications. This quantity offers a whole specification of the MPI-2 usual. it's annotated with reviews that make clear complex concerns, together with why yes layout offerings have been made, how clients are meant to take advantage of the interface, and the way they need to build their model of MPI. the quantity additionally offers many special, illustrative programming examples.
Read or Download MPI: The Complete Reference (Vol. 2), Vol. 2 - The MPI-2 Extensions PDF
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Additional info for MPI: The Complete Reference (Vol. 2), Vol. 2 - The MPI-2 Extensions
Sample text
In some circumstances, the new MPI-2 function is related to an MPI-1 function with a name that does not follow the naming conventions. In this circumstance, the languageneutral name is analogous to the MPI-1 name even though this gives an MPI-2 name that violates the naming conventions. The C and Fortran names are the same as the language-neutral name in this case. However, the C++ names for MPI-1 do reflect the naming rules and can differ from the C and Fortran names. html[2011-2-17 2:04:32] next page > page_19 < previous page page_19 next page > Page 19 analogous name in C++ to the MPI-1 name is different from the language-neutral name.
In C++, all entities are defined within the MPI namespace and a routine associated with a particular type of MPI object is a method on Class. Thus, the entire C++ function name is MPI::Class::Action_subset. If the routine is associated with a certain class, but does not make sense as an object method, it is a static member function of the class. If the routine is not associated with a class, the name should be of the form Action_subset in C and ACTION_SUBSET in Fortran, and in C++ should be scoped in the MPI namespace, MPI::Action_subset.
A collective call may or may not be synchronizing. If it is, then the completion of the call on any process in the group will require that all other processes in the group start their matching call. Collective calls over the same communicator must be executed in the same order by all members of the process group. predefined: A predefined datatype is a datatype with a predefined (constant) name (such as MPI_INT, MPI_FLOAT_INT, or MPI_UB) or a datatype constructed with MPI_TYPE_CREATE_F90_INTEGER, MPI_TYPE_CREATE__F90_REAL, or MPI_-TYPE_CREATE_F90_COMPLEX.