/[escript]/trunk/escript/src/Utils.h
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revision 757 by woo409, Mon Jun 26 13:12:56 2006 UTC revision 2635 by jfenwick, Thu Aug 27 04:54:41 2009 UTC
# Line 1  Line 1 
1  /*  
2   ************************************************************  /*******************************************************
3   *          Copyright 2006 by ACcESS MNRF                   *  *
4   *                                                          *  * Copyright (c) 2003-2009 by University of Queensland
5   *              http://www.access.edu.au                    *  * Earth Systems Science Computational Center (ESSCC)
6   *       Primary Business: Queensland, Australia            *  * http://www.uq.edu.au/esscc
7   *  Licensed under the Open Software License version 3.0    *  *
8   *     http://www.opensource.org/licenses/osl-3.0.php       *  * Primary Business: Queensland, Australia
9   *                                                          *  * Licensed under the Open Software License version 3.0
10   ************************************************************  * http://www.opensource.org/licenses/osl-3.0.php
11  */  *
12    *******************************************************/
13    
14    
15  #if !defined  escript_Utils_H  #if !defined  escript_Utils_H
16  #define escript_Utils_H  #define escript_Utils_H
# Line 24  namespace escript { Line 26  namespace escript {
26    
27    /**    /**
28       \brief       \brief
29         return the SVN version number used to build this version.
30         \warning Only gives accurate answers for clean checkouts
31      */
32      ESCRIPT_DLL_API int getSvnVersion();
33    
34      /**
35         \brief
36         print a message about how many MPI CPUs and OpenMP threads we're using
37      */
38      ESCRIPT_DLL_API void printParallelThreadCnt();
39    
40      /**
41         \brief
42       set the number of threads       set the number of threads
43         \warning Use of this method is strongly discouraged. It may be deprecated in future.
44    */    */
45    ESCRIPT_DLL_API void setNumberOfThreads(const int num_threads);    ESCRIPT_DLL_API void setNumberOfThreads(const int num_threads);
46    
# Line 34  namespace escript { Line 50  namespace escript {
50    */    */
51    ESCRIPT_DLL_API int getNumberOfThreads();    ESCRIPT_DLL_API int getNumberOfThreads();
52    
53      /**
54         \brief
55         returns the total number of available MPI processes for MPI_COMM_WORLD
56      */
57      ESCRIPT_DLL_API int getMPISizeWorld();
58    
59      /**
60         \brief
61         returns the MPI processor number within MPI_COMM_WORLD
62      */
63      ESCRIPT_DLL_API int getMPIRankWorld();
64      /**
65         \brief
66         returns the maximum value of an integer over all processors within MPI_COMM_WORLD
67      */
68      ESCRIPT_DLL_API int getMPIWorldMax(const int val);
69    
70      /**
71         \brief returns sum of an integer over all processors with MPI_COMM_WORLD
72      */
73      ESCRIPT_DLL_API int getMPIWorldSum(const int val);
74    
75      /**
76        \brief performs a barrier synchronization across all processors.
77      */
78    
79      ESCRIPT_DLL_API void MPIBarrierWorld();
80    
81     /**
82        \brief
83        returns machine precision
84     */
85     ESCRIPT_DLL_API double getMachinePrecision();
86     /*
87       \brief
88       return largest positive float
89     */
90     ESCRIPT_DLL_API double getMaxFloat();
91    
92     ESCRIPT_DLL_API
93     void
94     saveDataCSV(const std::string& filename, boost::python::dict arg, const std::string& sep, const std::string& csep,
95    bool append=false);
96    
97  } // end of namespace  } // end of namespace
98  #endif  #endif

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