Amazing discoveries by an aging storage professional catching up with BigData
In the previous post I used the option -host of the MPI command mpiexec to start multiple application instance on multiple nodes. This requires the user to decide how many application instances to start on which node. In this post I explain how to delegate this decision to a scheduler. See my HPC Lab for …
In the previous post I illustrated how to determine the MPI size and the MPI rank in a C program. In this post I explain how to send and receive MPI messages. See my HPC Lab for more MPI examples.
In the previous post I illustrated how to determine the MPI size and the MPI rank using a shell script. In this post I explain how to determine the MPI size and the MPI rank in a C program. See my HPC Lab for more MPI examples.
In the previous post I illustrated how to start MPI programs using the MPI command mpiexec. mpiexec provisions to each application instance an execution environment which enables effective communication between all instances. MPI allows to organize application instances in groups and to create communication objects for communication between members of the same groups (intra-group communicator) …
Message passing is an integral technique for parallel programs that run on a cluster computer. The Message Passing Interface (MPI) is a standardized and portable specification that is available in many HPC environments. In this post I explain how to start one or more instances of the same program on one ore more compute nodes …