/[escript]/trunk/escript/src/Utils.h
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revision 1805 by ksteube, Wed Sep 24 23:39:00 2008 UTC revision 2799 by jfenwick, Thu Dec 3 01:35:08 2009 UTC
# Line 1  Line 1 
1    
 /* $Id$ */  
   
2  /*******************************************************  /*******************************************************
3   *  *
4   *           Copyright 2003-2007 by ACceSS MNRF  * Copyright (c) 2003-2009 by University of Queensland
5   *       Copyright 2007 by University of Queensland  * Earth Systems Science Computational Center (ESSCC)
6   *  * http://www.uq.edu.au/esscc
7   *                http://esscc.uq.edu.au  *
8   *        Primary Business: Queensland, Australia  * Primary Business: Queensland, Australia
9   *  Licensed under the Open Software License version 3.0  * Licensed under the Open Software License version 3.0
10   *     http://www.opensource.org/licenses/osl-3.0.php  * 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 27  namespace escript { Line 26  namespace escript {
26    
27    /**    /**
28       \brief       \brief
29       return the latest SVN version number       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();    ESCRIPT_DLL_API int getSvnVersion();
33    
# Line 40  namespace escript { Line 40  namespace escript {
40    /**    /**
41       \brief       \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 60  namespace escript { Line 61  namespace escript {
61       returns the MPI processor number within MPI_COMM_WORLD       returns the MPI processor number within MPI_COMM_WORLD
62    */    */
63    ESCRIPT_DLL_API int getMPIRankWorld();    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    
98     /**
99     Resolve a collection of Data objects together now.
100     To get performance improvements, the objects will need to have the same function space and share Dag components.
101     \param obj A python list or tuple of Data objects to be resolved together.
102    
103     */
104     ESCRIPT_DLL_API
105     void
106     resolveGroup(boost::python::object obj);
107    
108  } // end of namespace  } // end of namespace
109  #endif  #endif

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