gsell
5a588415d0
- read_canonicalviewf.f90 read_setnparticlesf.f90, read_setviewf.f90, read_stridedf.f90 implemented
57 lines
1.6 KiB
Fortran
57 lines
1.6 KiB
Fortran
!
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! Copyright (c) 2006-2015, The Regents of the University of California,
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! through Lawrence Berkeley National Laboratory (subject to receipt of any
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! required approvals from the U.S. Dept. of Energy) and the Paul Scherrer
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! Institut (Switzerland). All rights reserved.!
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!
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! License: see file COPYING in top level of source distribution.
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!
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include 'H5hut.f90'
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program read_setnparticles
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use H5hut
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implicit none
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include 'mpif.h'
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! the file name we want to read
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character (len=*), parameter :: FNAME = "example_setnparticles.h5"
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integer :: comm, comm_rank, comm_size, ierr
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integer*8 :: file, status
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integer*8 :: nparticels, nparticels_total
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integer*4, allocatable :: data(:)
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! initialize MPI & H5hut
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comm = MPI_COMM_WORLD
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call mpi_init(ierr)
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call mpi_comm_rank (comm, comm_rank, ierr)
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call mpi_comm_size (comm, comm_size, ierr)
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call h5_abort_on_error ()
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! open file and go to first step
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file = h5_openfile (FNAME, H5_O_RDONLY, H5_PROP_DEFAULT)
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status = h5_setstep(file, 1_8)
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! compute number of particles this process has to read
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nparticels_total = h5pt_getnpoints (file)
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nparticels = nparticels_total / comm_size
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if (comm_rank+1 == comm_size) then
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nparticels = nparticels + mod (nparticels_total, comm_size)
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end if
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write (*, "('Total number of particles: ', i8)") nparticels_total
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write (*, "('Number of particles on this core: ', i8)") nparticels
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! read data
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status = h5pt_setnpoints (file, nparticels)
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allocate (data (nparticels))
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status = h5pt_readdata_i4 (file, "data", data)
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! cleanup
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status = h5_closefile (file)
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deallocate (data)
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call mpi_finalize (ierr)
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end program read_setnparticles
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