message passing - Memory allocation in MPI programs -

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how memory allocated in slave nodes execution of mpi programs ? how slave nodes know amount of memory reserve ? happens when slave node can't find data wants access ?

this not homework problem , question tried came in mind , could'nt find on googling

with non-specific question, best answer can expect non-specific

when programming using mpi typically write single program launched (via mpirun/mpiexec, or batching system eg. torque) on set of notes.

the master-slave model 1 approach.

the memory allocation typically under program control, in application allocate memory needed, in mpi program.

as finding data, provided them (directly or indirectly) (by master process, if master-slave model used). if indeed each mpi instance has "search" data processing, program unable find requires, should send suitable error message/status caller (or master process)

.pmcd.


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