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REQUIREMENTS:
- ADIOS 1.5.0: http://www.olcf.ornl.gov/center-projects/adios
- C compiler
- MPI
BUILD:
- Install ADIOS
- In Makefile, set ADIOS_DIR to the installation directory
- also set the MPI/C compiler name (e.g. mpicc or cc)
- run make
This example is for writing a uniform 2D mesh and data on it.
2D mesh is decomposed in x and y direction by npx and npy, which are passed in from the command line following the executable.
npx = number of processes in x direction
npy = number of processes in y direction
X = coordinates of data in x direction
Y = coordinates of data in y direction
Processes write ndx*ndy points per process
data is data on the points (value = rank)
1. Run the writer
=================
$ mpirun -np 12 ./structured2d 4 3
or
$ mpirun -np 12 ./structured2d_noxml 4 3
2. Check the output
===================
integer /nproc scalar = 12
integer /nx_global scalar = 260
integer /ny_global scalar = 387
integer /offs_x scalar = 0
integer /offs_y scalar = 0
integer /nx_local scalar = 65
integer /ny_local scalar = 129
double /X {260, 387} = 0 / 453.496 / 226.748 / 93.8189
double /Y {260, 387} = 0 / 386 / 193 / 111.717
double /data {260, 387} = 0 / 11 / 5.5 / 3.45205
$ bpls -l structured2d.bp
strctured2d.png is a plot of how the data over the nx_global*ny_global points should look like if visualized.
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