test code text

docs.it4i/software/viz/insitu.md

@@ -48,13 +48,71 @@ It will generate the CxxFullExampleAdaptor executable file. This can be later ru
 Provided example is a simple MPI program. Main executing part is written in FEDriver.cxx. It is a simulator code that creates computational grid   
 
 
-```javascript {.line-numbers}
-#include ahoj.h
-
-int main() {
-
-
-return 0;
+```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;
 }
 ```