c++ Programming Glossary: mpi_comm_world

http://stackoverflow.com/questions/11095309/openmp-set-num-threads-is-not-working

main int argc char argv MPI_Init argc argv MPI_Comm_rank MPI_COMM_WORLD myrank MPI_Comm_size MPI_COMM_WORLD groupsize omp_set_num_threads.. argv MPI_Comm_rank MPI_COMM_WORLD myrank MPI_Comm_size MPI_COMM_WORLD groupsize omp_set_num_threads 4 sum 0 #pragma omp for reduction..

thread safety of MPI send using threads created with std::async

http://stackoverflow.com/questions/14836560/thread-safety-of-mpi-send-using-threads-created-with-stdasync

MPI library does not have full thread support n MPI_Abort MPI_COMM_WORLD 1 Equivalent code with the obsoleted and removed from MPI 3..

What happens if you static_cast invalid value to enum class?

http://stackoverflow.com/questions/18195312/what-happens-if-you-static-cast-invalid-value-to-enum-class

Creating a counter that stays synchronized across MPI processes

http://stackoverflow.com/questions/4948788/creating-a-counter-that-stays-synchronized-across-mpi-processes

struct mpi_counter_t count hostrank hostrank MPI_Comm_rank MPI_COMM_WORLD count rank MPI_Comm_size MPI_COMM_WORLD count size if count.. MPI_Comm_rank MPI_COMM_WORLD count rank MPI_Comm_size MPI_COMM_WORLD count size if count rank hostrank MPI_Alloc_mem count size sizeof.. count data count size sizeof int sizeof int MPI_INFO_NULL MPI_COMM_WORLD count win else count data NULL MPI_Win_create count data 0 1..

How to use MPI derived data type for 3D array?

http://stackoverflow.com/questions/9736554/how-to-use-mpi-derived-data-type-for-3d-array

rank MPI_Status status MPI_Init argc argv MPI_Comm_size MPI_COMM_WORLD size MPI_Comm_rank MPI_COMM_WORLD rank MPI_Datatype sub MPI_Type_vector.. argc argv MPI_Comm_size MPI_COMM_WORLD size MPI_Comm_rank MPI_COMM_WORLD rank MPI_Datatype sub MPI_Type_vector KE IE IE JE 1 IE MPI_DOUBLE.. for int j 0 j JE j a i j 0 2 MPI_Send a 0 0 0 1 sub 1 52 MPI_COMM_WORLD if rank 1 double b new double IE for int i 0 i IE i b i new..

writing a matrix into a single txt file with mpi

http://stackoverflow.com/questions/9777828/writing-a-matrix-into-a-single-txt-file-with-mpi

charspernum 9 ierr MPI_Init argc argv ierr MPI_Comm_size MPI_COMM_WORLD size ierr MPI_Comm_rank MPI_COMM_WORLD rank locnrows nrows size.. ierr MPI_Comm_size MPI_COMM_WORLD size ierr MPI_Comm_rank MPI_COMM_WORLD rank locnrows nrows size startrow rank locnrows endrow startrow.. localarray open the file and set the view MPI_File_open MPI_COMM_WORLD all data.txt MPI_MODE_CREATE MPI_MODE_WRONLY MPI_INFO_NULL..