PetscTools.hpp

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 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice,
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   software without specific prior written permission.
 
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
*/
 
#ifndef PETSCTOOLS_HPP_
#define PETSCTOOLS_HPP_
 
#include <string>
#include <vector>
#include <cstdlib> // For EXIT_FAILURE
 
#include <petsc.h>
#include <petscvec.h>
#include <petscmat.h>
#include <petscsys.h>
 
#define EXIT_IF_PARALLEL if(PetscTools::IsParallel()){TS_TRACE("This test does not pass in parallel yet.");return;}
#define EXIT_IF_SEQUENTIAL if(PetscTools::IsSequential()){TS_TRACE("This test is not meant to be executed in sequential.");return;}
 
#if (PETSC_VERSION_MAJOR == 3 && PETSC_VERSION_MINOR < 2 || PETSC_VERSION_MAJOR<3 ) // Before PETSc 3.2
typedef PetscTruth PetscBool;
#define PETSC_DESTROY_PARAM(x) x
#else
#define PETSC_DESTROY_PARAM(x) &x
#endif
 
#define TRY_IF_MASTER(method) {              \
    if (PetscTools::AmMaster())              \
    { try {                                  \
        method;                              \
    } catch (Exception& e) {                 \
        PetscTools::ReplicateException(true);\
        throw(e);                            \
    } }                                      \
    PetscTools::ReplicateException(false);   \
    }
 
class PetscTools
{
private:
 
    static bool mPetscIsInitialised;
 
    static unsigned mNumProcessors;
 
    static unsigned mRank;
 
    static bool mIsolateProcesses;
 
    static inline void CheckCache()
    {
        if (mNumProcessors == 0)
        {
            ResetCache();
        }
    }
 
public:
 
    static const unsigned MASTER_RANK=0;
 
    static void ResetCache();
 
    static bool IsInitialised();
 
    static bool IsSequential();
 
    static bool IsParallel();
 
    static bool IsIsolated();
 
    static unsigned GetNumProcs();
 
    static unsigned GetMyRank();
 
    static bool AmMaster();
 
    static bool AmTopMost();
 
    static void Barrier(const std::string callerId="");
 
    static void BeginRoundRobin();
 
    static void EndRoundRobin();
 
    static void IsolateProcesses(bool isolate=true);
 
    static MPI_Comm GetWorld();
 
    static Vec CreateVec(int size, int localSize=PETSC_DECIDE, bool ignoreOffProcEntries = true);
 
    static Vec CreateVec(std::vector<double> data);
 
    static Vec CreateAndSetVec(int size, double value);
 
    static void SetupMat(Mat& rMat, int numRows, int numColumns,
                         unsigned rowPreallocation,
                         int numLocalRows=PETSC_DECIDE,
                         int numLocalColumns=PETSC_DECIDE,
                         bool ignoreOffProcEntries=true,
                         bool newAllocationError=true);
 
    static bool ReplicateBool(bool flag);
 
    static void ReplicateException(bool flag);
 
    static void DumpPetscObject(const Mat& rMat, const std::string& rOutputFileFullPath);
 
    static void DumpPetscObject(const Vec& rVec, const std::string& rOutputFileFullPath);
 
    static void ReadPetscObject(Mat& rMat, const std::string& rOutputFileFullPath, Vec rParallelLayout=nullptr);
 
    static void ReadPetscObject(Vec& rVec, const std::string& rOutputFileFullPath, Vec rParallelLayout=nullptr);
 
    static bool HasParMetis();
 
     static inline void Destroy(Vec& rVec)
     {
#if (PETSC_VERSION_MAJOR == 3 && PETSC_VERSION_MINOR >= 2) //PETSc 3.2 or later
        VecDestroy(&rVec);
#else
        VecDestroy(rVec);
#endif
     }
 
     static inline void Destroy(Mat& rMat)
     {
#if (PETSC_VERSION_MAJOR == 3 && PETSC_VERSION_MINOR >= 2) //PETSc 3.2 or later
        MatDestroy(&rMat);
#else
        MatDestroy(rMat);
#endif
     }
 
     static inline void SetOption(const char* pOptionName, const char* pOptionValue)
     {
         // If this option turns on logging, PETSc needs to be made aware in different ways for different versions
         // See #2933 for details
         const std::string str_option_name(pOptionName);
         if (str_option_name.find("log") != std::string::npos)
         {
#if (PETSC_VERSION_MAJOR == 3 && PETSC_VERSION_MINOR == 6) // PETSc 3.6
             PetscLogBegin();
#elif (PETSC_VERSION_MAJOR == 3 && PETSC_VERSION_MINOR >= 7) // PETSc 3.7 or later
             PetscLogDefaultBegin();
#endif
         }
 
#if (PETSC_VERSION_MAJOR == 3 && PETSC_VERSION_MINOR >= 7) // PETSc 3.7 or later
         PetscOptionsSetValue(NULL, pOptionName, pOptionValue);
#else
         PetscOptionsSetValue(pOptionName, pOptionValue);
#endif
     }
 
#if PETSC_VERSION_GE(3, 11, 2) // PETSc 3.11.2 or newer
     static PetscErrorCode ChasteMatCopy(Mat A, Mat B, MatStructure str);
#endif
};
 
#endif /*PETSCTOOLS_HPP_*/