Commit e999521e authored by Petr Strakos's avatar Petr Strakos

adding code images

parent bf484888
......@@ -45,76 +45,10 @@ It will generate the CxxFullExampleAdaptor executable file. This can be later ru
## Code explanation
Provided example is a simple MPI program. Main executing part is written in FEDriver.cxx. It is a simulator code that creates computational grid
```c++
#include "FEDataStructures.h"
#include <mpi.h>
#include <stdio.h>
#include <unistd.h>
#include <iostream>
#include <stdlib.h>
#ifdef USE_CATALYST
#include "FEAdaptor.h"
#endif
// Example of a C++ adaptor for a simulation code
int main(int argc, char** argv)
{
// Check the input arguments for area size
if (argc < 4) {
printf("Not all arguments for grid definition supplied\n");
return 0;
}
unsigned int pointsX = abs(std::stoi(argv[1]));
unsigned int pointsY = abs(std::stoi(argv[2]));
unsigned int pointsZ = abs(std::stoi(argv[3]));
//MPI_Init(&argc, &argv);
MPI_Init(NULL, NULL);
Grid grid;
unsigned int numPoints[3] = { pointsX, pointsY, pointsZ };
double spacing[3] = { 1, 1.1, 1.3 };
grid.Initialize(numPoints, spacing);
Attributes attributes;
attributes.Initialize(&grid);
#ifdef USE_CATALYST
// The first argument is the program name
FEAdaptor::Initialize(argc - 4, &argv[4]);
#endif
unsigned int numberOfTimeSteps = 1000;
for (unsigned int timeStep = 0; timeStep < numberOfTimeSteps; timeStep++)
{
// use a time step length of 0.1
double time = timeStep * 0.1;
attributes.UpdateFields(time);
#ifdef USE_CATALYST
FEAdaptor::CoProcess(grid, attributes, time, timeStep, timeStep == numberOfTimeSteps - 1);
#endif
// Get the name of the processor
char processor_name[MPI_MAX_PROCESSOR_NAME];
int name_len;
MPI_Get_processor_name(processor_name, &name_len);
printf("This is processor %s, time step: %0.3f\n", processor_name, time);
usleep(500000);
}
#ifdef USE_CATALYST
FEAdaptor::Finalize();
#endif
MPI_Finalize();
return 0;
}
```
Provided example is a simple MPI program. Main executing part is written in FEDriver.cxx. It is a simulator code that creates computational grid and performs simulation. Dimensions of the computational grid in terms of number of points in x, y, z direction are supplied as input parameters to the *main* function (see lines 22-24). Fourth parametr expects a name of a Python script that sets up ParaView-Catalyst environment.
![](img/FEDriver.png "FEDriver.cxx")
mpirun -n 2 ./CxxFullExample 30 30 30 ../SampleScripts/feslicescript.py
......
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