1 | /************************************************************************/ |
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2 | /* PyPAR - Parallel Python using MPI */ |
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3 | /* Copyright (C) 2001, 2002 Ole M. Nielsen, Gian Paolo Ciceri */ |
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4 | /* */ |
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5 | /* See enclosed README file for details of installation and use. */ |
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6 | /* */ |
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7 | /* This program is free software; you can redistribute it and/or modify */ |
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8 | /* it under the terms of the GNU General Public License as published by */ |
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9 | /* the Free Software Foundation; either version 2 of the License, or */ |
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10 | /* (at your option) any later version. */ |
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11 | /* */ |
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12 | /* This program is distributed in the hope that it will be useful, */ |
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13 | /* but WITHOUT ANY WARRANTY; without even the implied warranty of */ |
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14 | /* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */ |
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15 | /* GNU General Public License (http://www.gnu.org/copyleft/gpl.html) */ |
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16 | /* for more details. */ |
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17 | /* */ |
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18 | /* You should have received a copy of the GNU General Public License */ |
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19 | /* along with this program; if not, write to the Free Software */ |
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20 | /* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307*/ |
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21 | /* */ |
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22 | /* */ |
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23 | /* Contact addresses: Ole.Nielsen@anu.edu.au, gp.ciceri@acm.org */ |
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24 | /* */ |
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25 | /* version 1.2.1, 16 February 2002 */ |
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26 | /* Status block, MPI_ANY_TAG, MPI_ANY_SOURCE exported */ |
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27 | /* Version 1.2, 15 February 2002 */ |
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28 | /* Scatter added by Gian Paolo Ciceri */ |
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29 | /* Version 1.1, 14 February 2002 */ |
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30 | /* Bcast added by Gian Paolo Ciceri */ |
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31 | /* Version 1.0.2, 10 February 2002 */ |
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32 | /* Modified by Gian Paulo Ciceri to allow pypar run under Python 2.2 */ |
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33 | /* Version 1.0.1, 8 February 2002 */ |
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34 | /* Modified to install on SUN enterprise systems under Mpich */ |
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35 | /* Version 1.0, 7 February 2002 */ |
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36 | /* First public release for Python 2.1 (OMN) */ |
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37 | /************************************************************************/ |
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38 | |
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39 | |
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40 | #include "Python.h" |
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41 | #include "mpi.h" |
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42 | #include "Numeric/arrayobject.h" |
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43 | |
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44 | // to handle MPI constants export (shamelessly stolen from _cursesmodule.c) |
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45 | #define SetDictInt(string,ch) \ |
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46 | PyDict_SetItemString(ModDict, string, PyInt_FromLong((long) (ch))); |
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47 | |
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48 | // kludge to remap struct MPI_op to int (easier to handle by python) |
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49 | #define mpi_MAX 1 |
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50 | #define mpi_MIN 2 |
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51 | #define mpi_SUM 3 |
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52 | #define mpi_PROD 4 |
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53 | #define mpi_LAND 5 |
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54 | #define mpi_BAND 6 |
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55 | #define mpi_LOR 7 |
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56 | #define mpi_BOR 8 |
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57 | #define mpi_LXOR 9 |
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58 | #define mpi_BXOR 10 |
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59 | #define mpi_MAXLOC 11 |
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60 | #define mpi_MINLOC 12 |
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61 | #define mpi_REPLACE 13 |
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62 | |
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63 | |
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64 | |
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65 | MPI_Datatype type_map(PyArrayObject *x) { |
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66 | |
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67 | // |
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68 | // TYPE py_type mpi_type bytes symbol |
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69 | // ---------------------------------------- |
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70 | // INT 4 6 4 'i' |
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71 | // LONG 5 8 8 'l' |
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72 | // FLOAT 6 10 4 'f' |
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73 | // DOUBLE 7 11 8 'd' |
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74 | |
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75 | |
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76 | int py_type; |
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77 | MPI_Datatype mpi_type; |
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78 | |
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79 | if (x -> nd != 1) { |
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80 | PyErr_SetString(PyExc_ValueError, "Array must be 1 dimensional"); |
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81 | return (MPI_Datatype) 0; |
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82 | } |
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83 | |
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84 | py_type = x -> descr -> type_num; |
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85 | if (py_type == PyArray_DOUBLE) |
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86 | mpi_type = MPI_DOUBLE; |
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87 | else if (py_type == PyArray_LONG) |
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88 | mpi_type = MPI_LONG; |
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89 | else if (py_type == PyArray_FLOAT) |
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90 | mpi_type = MPI_FLOAT; |
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91 | else if (py_type == PyArray_INT) |
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92 | mpi_type = MPI_INT; |
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93 | else { |
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94 | PyErr_SetString(PyExc_ValueError, "Array must be of type int or float"); |
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95 | return 0; |
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96 | } |
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97 | |
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98 | //printf("Types: %d %d.\n", py_type, mpi_type); |
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99 | |
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100 | return mpi_type; |
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101 | } |
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102 | |
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103 | MPI_Op op_map(int py_op) { |
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104 | |
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105 | MPI_Op mpi_op; |
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106 | |
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107 | if (py_op == mpi_MAX) |
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108 | mpi_op = MPI_MAX; |
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109 | else if (py_op == mpi_MIN) |
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110 | mpi_op = MPI_MIN; |
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111 | else if (py_op == mpi_SUM) |
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112 | mpi_op = MPI_SUM; |
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113 | else if (py_op == mpi_PROD) |
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114 | mpi_op = MPI_PROD; |
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115 | else if (py_op == mpi_LAND) |
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116 | mpi_op = MPI_LAND; |
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117 | else if (py_op == mpi_BAND) |
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118 | mpi_op = MPI_BAND; |
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119 | else if (py_op == mpi_LOR) |
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120 | mpi_op = MPI_LOR; |
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121 | else if (py_op == mpi_BOR) |
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122 | mpi_op = MPI_BOR; |
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123 | else if (py_op == mpi_LXOR) |
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124 | mpi_op = MPI_LXOR; |
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125 | else if (py_op == mpi_BXOR) |
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126 | mpi_op = MPI_BXOR; |
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127 | else if (py_op == mpi_MAXLOC) |
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128 | mpi_op = MPI_MAXLOC; |
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129 | else if (py_op == mpi_MINLOC) |
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130 | mpi_op = MPI_MINLOC; |
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131 | else if (py_op == mpi_REPLACE) |
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132 | mpi_op = MPI_REPLACE; |
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133 | else { |
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134 | PyErr_SetString(PyExc_ValueError, "Operation unknown"); |
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135 | return 0; |
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136 | } |
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137 | |
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138 | //printf("Op: %d.\n", py_op); |
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139 | |
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140 | return mpi_op; |
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141 | } |
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142 | |
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143 | /*********************************************************/ |
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144 | /* send_string */ |
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145 | /* Send string of characters */ |
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146 | /* */ |
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147 | /*********************************************************/ |
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148 | static PyObject *send_string(PyObject *self, PyObject *args) { |
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149 | char *s; |
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150 | int destination, tag, length, err; |
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151 | |
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152 | /* process the parameters */ |
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153 | if (!PyArg_ParseTuple(args, "s#ii", &s, &length, &destination, &tag)) |
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154 | return NULL; |
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155 | |
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156 | /* call the MPI routine */ |
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157 | err = MPI_Send(s, length, MPI_CHAR, destination, tag, MPI_COMM_WORLD); |
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158 | |
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159 | return Py_BuildValue("i", err); |
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160 | } |
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161 | |
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162 | /**********************************************************/ |
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163 | /* receive_string */ |
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164 | /* Receive string of characters */ |
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165 | /* */ |
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166 | /**********************************************************/ |
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167 | static PyObject *receive_string(PyObject *self, PyObject *args) { |
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168 | char *s; |
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169 | int source, tag, length, err, st_length; |
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170 | MPI_Status status; |
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171 | |
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172 | /* process the parameters */ |
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173 | if (!PyArg_ParseTuple(args, "s#ii", &s, &length, &source, &tag)) |
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174 | return NULL; |
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175 | |
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176 | /* call the MPI routine */ |
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177 | err = MPI_Recv(s, length, MPI_CHAR, source, tag, MPI_COMM_WORLD, &status); |
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178 | |
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179 | MPI_Get_count(&status, MPI_CHAR, &st_length); |
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180 | // status.st_length is not available in all MPI implementations |
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181 | //Alternative is: MPI_Get_elements(MPI_Status *, MPI_Datatype, int *); |
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182 | |
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183 | return Py_BuildValue("i(iiii)", err, status.MPI_SOURCE, status.MPI_TAG, |
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184 | status.MPI_ERROR, st_length); |
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185 | } |
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186 | |
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187 | /**********************************************************/ |
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188 | /* bcast_string */ |
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189 | /* Broadcast string of characters */ |
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190 | /* */ |
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191 | /**********************************************************/ |
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192 | static PyObject *bcast_string(PyObject *self, PyObject *args) { |
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193 | char *s; |
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194 | int source, length, err; |
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195 | |
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196 | /* process the parameters */ |
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197 | if (!PyArg_ParseTuple(args, "s#i", &s, &length, &source)) |
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198 | return NULL; |
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199 | |
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200 | /* call the MPI routine */ |
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201 | err = MPI_Bcast(s, length, MPI_CHAR, source, MPI_COMM_WORLD); |
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202 | |
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203 | return Py_BuildValue("i", err); |
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204 | } |
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205 | |
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206 | /**********************************************************/ |
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207 | /* scatter_string */ |
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208 | /* Scatter string of characters */ |
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209 | /* */ |
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210 | /**********************************************************/ |
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211 | static PyObject *scatter_string(PyObject *self, PyObject *args) { |
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212 | char *s; |
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213 | char *d; |
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214 | int source, length, err; |
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215 | |
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216 | /* process the parameters */ |
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217 | if (!PyArg_ParseTuple(args, "sisi", &s, &length, &d, &source)) |
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218 | return NULL; |
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219 | |
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220 | /* call the MPI routine */ |
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221 | err = MPI_Scatter(s, length, MPI_CHAR, d, length, MPI_CHAR, source, MPI_COMM_WORLD); |
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222 | |
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223 | return Py_BuildValue("i", err); |
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224 | } |
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225 | |
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226 | /**********************************************************/ |
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227 | /* gather_string */ |
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228 | /* Gather string of characters */ |
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229 | /* */ |
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230 | /**********************************************************/ |
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231 | static PyObject *gather_string(PyObject *self, PyObject *args) { |
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232 | char *s; |
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233 | char *d; |
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234 | int source, length, err; |
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235 | |
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236 | /* process the parameters */ |
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237 | if (!PyArg_ParseTuple(args, "sisi", &s, &length, &d, &source)) |
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238 | return NULL; |
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239 | |
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240 | /* call the MPI routine */ |
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241 | err = MPI_Gather(s, length, MPI_CHAR, d, length, MPI_CHAR, source, MPI_COMM_WORLD); |
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242 | |
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243 | return Py_BuildValue("i", err); |
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244 | } |
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245 | |
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246 | |
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247 | /**********************************************************/ |
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248 | /* send_array */ |
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249 | /* Send Numeric array of type float, double, int, or long */ |
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250 | /* */ |
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251 | /**********************************************************/ |
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252 | static PyObject *send_array(PyObject *self, PyObject *args) { |
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253 | PyObject *input; |
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254 | PyArrayObject *x; |
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255 | int destination, tag, err; |
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256 | MPI_Datatype mpi_type; |
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257 | |
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258 | /* process the parameters */ |
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259 | if (!PyArg_ParseTuple(args, "Oii", &input, &destination, &tag)) |
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260 | return NULL; |
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261 | |
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262 | /* Make Numeric array from general sequence type (no cost if already Numeric)*/ |
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263 | x = (PyArrayObject *) |
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264 | PyArray_ContiguousFromObject(input, PyArray_NOTYPE, 0, 0); |
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265 | |
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266 | /* Input check and determination of MPI type */ |
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267 | mpi_type = type_map(x); |
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268 | if (!mpi_type) return NULL; |
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269 | |
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270 | /* call the MPI routine */ |
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271 | err = MPI_Send(x->data, x->dimensions[0], mpi_type, destination, tag,\ |
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272 | MPI_COMM_WORLD); |
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273 | |
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274 | Py_DECREF(x); |
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275 | |
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276 | return Py_BuildValue("i", err); |
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277 | } |
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278 | |
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279 | /*************************************************************/ |
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280 | /* receive_array */ |
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281 | /* Receive Numeric array of type float, double, int, or long */ |
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282 | /* */ |
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283 | /*************************************************************/ |
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284 | static PyObject *receive_array(PyObject *self, PyObject *args) { |
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285 | PyArrayObject *x; |
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286 | int source, tag, err, st_length; |
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287 | MPI_Datatype mpi_type; |
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288 | MPI_Status status; |
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289 | |
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290 | /* process the parameters */ |
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291 | if (!PyArg_ParseTuple(args, "Oii", &x, &source, &tag)) |
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292 | return NULL; |
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293 | |
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294 | /* Input check and determination of MPI type */ |
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295 | mpi_type = type_map(x); |
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296 | if (!mpi_type) return NULL; |
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297 | |
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298 | /* call the MPI routine */ |
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299 | err = MPI_Recv(x->data, x->dimensions[0], mpi_type, source, tag, \ |
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300 | MPI_COMM_WORLD, &status); |
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301 | |
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302 | MPI_Get_count(&status, mpi_type, &st_length); |
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303 | // status.st_length is not available in all MPI implementations |
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304 | //Alternative is: MPI_Get_elements(MPI_Status *, MPI_Datatype, int *); |
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305 | |
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306 | |
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307 | return Py_BuildValue("i(iiii)", err, status.MPI_SOURCE, status.MPI_TAG, |
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308 | status.MPI_ERROR, st_length); |
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309 | } |
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310 | |
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311 | |
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312 | /*************************************************************/ |
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313 | /* bcast_array */ |
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314 | /* Broadcast Num. array of type float, double, int, or long */ |
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315 | /* */ |
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316 | /*************************************************************/ |
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317 | static PyObject *bcast_array(PyObject *self, PyObject *args) { |
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318 | PyArrayObject *x; |
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319 | int source, err; |
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320 | MPI_Datatype mpi_type; |
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321 | MPI_Status status; |
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322 | |
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323 | /* process the parameters */ |
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324 | if (!PyArg_ParseTuple(args, "Oi", &x, &source)) |
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325 | return NULL; |
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326 | |
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327 | /* Input check and determination of MPI type */ |
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328 | mpi_type = type_map(x); |
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329 | if (!mpi_type) return NULL; |
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330 | |
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331 | /* call the MPI routine */ |
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332 | err = MPI_Bcast(x->data, x->dimensions[0], mpi_type, source, \ |
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333 | MPI_COMM_WORLD); |
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334 | |
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335 | return Py_BuildValue("i", err); |
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336 | } |
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337 | |
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338 | /*************************************************************/ |
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339 | /* scatter_array */ |
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340 | /* Scatter Num. array of type float, double, int, or long */ |
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341 | /* */ |
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342 | /*************************************************************/ |
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343 | static PyObject *scatter_array(PyObject *self, PyObject *args) { |
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344 | PyArrayObject *x; |
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345 | PyArrayObject *d; |
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346 | int length, source, err; |
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347 | MPI_Datatype mpi_type; |
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348 | MPI_Status status; |
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349 | |
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350 | /* process the parameters */ |
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351 | if (!PyArg_ParseTuple(args, "OiOi", &x, &length, &d, &source)) |
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352 | return NULL; |
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353 | |
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354 | /* Input check and determination of MPI type */ |
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355 | mpi_type = type_map(x); |
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356 | if (!mpi_type) return NULL; |
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357 | |
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358 | /* call the MPI routine */ |
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359 | err = MPI_Scatter(x->data, length, mpi_type, d->data, length, mpi_type, source, \ |
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360 | MPI_COMM_WORLD); |
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361 | |
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362 | return Py_BuildValue("i", err); |
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363 | } |
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364 | |
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365 | |
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366 | /*************************************************************/ |
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367 | /* gather_array */ |
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368 | /* Gather Num. array of type float, double, int, or long */ |
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369 | /* */ |
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370 | /*************************************************************/ |
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371 | static PyObject *gather_array(PyObject *self, PyObject *args) { |
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372 | PyArrayObject *x; |
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373 | PyArrayObject *d; |
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374 | int length, source, err; |
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375 | MPI_Datatype mpi_type; |
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376 | MPI_Status status; |
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377 | |
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378 | /* process the parameters */ |
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379 | if (!PyArg_ParseTuple(args, "OiOi", &x, &length, &d, &source)) |
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380 | return NULL; |
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381 | |
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382 | /* Input check and determination of MPI type */ |
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383 | mpi_type = type_map(x); |
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384 | if (!mpi_type) return NULL; |
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385 | |
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386 | /* call the MPI routine */ |
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387 | err = MPI_Gather(x->data, length, mpi_type, d->data, length, mpi_type, source, \ |
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388 | MPI_COMM_WORLD); |
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389 | |
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390 | return Py_BuildValue("i", err); |
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391 | } |
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392 | |
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393 | |
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394 | /*************************************************************/ |
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395 | /* reduce_array */ |
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396 | /* Reduce Num. array of type float, double, int, or long */ |
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397 | /* */ |
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398 | /*************************************************************/ |
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399 | static PyObject *reduce_array(PyObject *self, PyObject *args) { |
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400 | PyArrayObject *x; |
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401 | PyArrayObject *d; |
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402 | int length, source, op, err; |
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403 | MPI_Datatype mpi_type; |
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404 | MPI_Status status; |
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405 | MPI_Op mpi_op; |
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406 | |
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407 | /* process the parameters */ |
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408 | if (!PyArg_ParseTuple(args, "OOiii", &x, &d, &length, &op, &source)) |
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409 | return NULL; |
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410 | |
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411 | /* Input check and determination of MPI type */ |
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412 | mpi_type = type_map(x); |
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413 | if (!mpi_type) return NULL; |
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414 | |
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415 | /* Input check and determination of MPI op */ |
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416 | //printf("op: %d\n", op); |
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417 | mpi_op = op_map(op); |
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418 | if (!mpi_op) return NULL; |
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419 | |
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420 | |
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421 | if (op == mpi_MAXLOC || op == mpi_MINLOC) { |
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422 | //not implemented |
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423 | return Py_BuildValue("i", -666); |
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424 | } |
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425 | else { |
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426 | /* call the MPI routine */ |
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427 | err = MPI_Reduce(x->data, d->data, length, mpi_type, mpi_op, source, \ |
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428 | MPI_COMM_WORLD); |
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429 | } |
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430 | |
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431 | |
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432 | return Py_BuildValue("i", err); |
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433 | } |
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434 | |
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435 | |
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436 | |
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437 | /*********************************************************/ |
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438 | /* MPI calls rank, size, finalize, abort */ |
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439 | /* */ |
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440 | /*********************************************************/ |
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441 | |
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442 | static PyObject * rank(PyObject *self, PyObject *args) { |
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443 | int myid; |
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444 | |
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445 | MPI_Comm_rank(MPI_COMM_WORLD,&myid); |
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446 | return Py_BuildValue("i", myid); |
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447 | } |
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448 | |
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449 | static PyObject * size(PyObject *self, PyObject *args) { |
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450 | int numprocs; |
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451 | |
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452 | MPI_Comm_size(MPI_COMM_WORLD,&numprocs); |
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453 | return Py_BuildValue("i", numprocs); |
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454 | } |
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455 | |
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456 | static PyObject * Get_processor_name(PyObject *self, PyObject *args) { |
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457 | char processor_name[MPI_MAX_PROCESSOR_NAME]; |
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458 | int namelen; |
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459 | |
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460 | MPI_Get_processor_name(processor_name,&namelen); |
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461 | return Py_BuildValue("s#", processor_name, namelen); |
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462 | } |
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463 | |
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464 | static PyObject * Finalize(PyObject *self, PyObject *args) { |
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465 | int error; |
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466 | |
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467 | error = MPI_Finalize(); |
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468 | return Py_BuildValue("i", error); |
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469 | } |
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470 | |
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471 | static PyObject * Abort(PyObject *self, PyObject *args) { |
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472 | int error, code=0; |
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473 | |
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474 | error = MPI_Abort(MPI_COMM_WORLD, code); |
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475 | return Py_BuildValue("i", error); |
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476 | } |
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477 | |
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478 | static PyObject * Barrier(PyObject *self, PyObject *args) { |
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479 | int error; |
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480 | |
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481 | error = MPI_Barrier(MPI_COMM_WORLD); |
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482 | return Py_BuildValue("i", error); |
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483 | } |
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484 | |
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485 | static PyObject * Wtime(PyObject *self, PyObject *args) { |
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486 | double t; |
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487 | |
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488 | t = MPI_Wtime(); |
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489 | return Py_BuildValue("d", t); |
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490 | } |
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491 | |
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492 | /**********************************/ |
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493 | /* Method table for python module */ |
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494 | /**********************************/ |
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495 | |
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496 | static struct PyMethodDef MethodTable[] = { |
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497 | {"size", size, METH_VARARGS}, |
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498 | {"rank", rank, METH_VARARGS}, |
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499 | {"Barrier", Barrier, METH_VARARGS}, |
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500 | {"Wtime", Wtime, METH_VARARGS}, |
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501 | {"Get_processor_name", Get_processor_name, METH_VARARGS}, |
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502 | {"Finalize", Finalize, METH_VARARGS}, |
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503 | {"Abort", Abort, METH_VARARGS}, |
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504 | {"send_string", send_string, METH_VARARGS}, |
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505 | {"receive_string", receive_string, METH_VARARGS}, |
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506 | {"bcast_string", bcast_string, METH_VARARGS}, |
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507 | {"scatter_string", scatter_string, METH_VARARGS}, |
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508 | {"gather_string", gather_string, METH_VARARGS}, |
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509 | {"send_array", send_array, METH_VARARGS}, |
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510 | {"receive_array", receive_array, METH_VARARGS}, |
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511 | {"bcast_array", bcast_array, METH_VARARGS}, |
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512 | {"scatter_array", scatter_array, METH_VARARGS}, |
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513 | {"gather_array", gather_array, METH_VARARGS}, |
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514 | {"reduce_array", reduce_array, METH_VARARGS}, |
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515 | {NULL, NULL} |
---|
516 | }; |
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517 | |
---|
518 | |
---|
519 | /***************************/ |
---|
520 | /* Initialisation Function */ |
---|
521 | /***************************/ |
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522 | |
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523 | void initmpi(){ |
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524 | int error, argc = 0; //Dummy |
---|
525 | char **argv; //Dummy |
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526 | PyObject *m, *ModDict; |
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527 | |
---|
528 | //printf("Initialising MPI\n"); |
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529 | error = MPI_Init(&argc, &argv); |
---|
530 | //printf("MPI Initialised\n"); |
---|
531 | |
---|
532 | //FIXME: Make a sensible errorcheck here |
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533 | |
---|
534 | m = Py_InitModule("mpi", MethodTable); |
---|
535 | |
---|
536 | // to handle MPI symbolic constants |
---|
537 | ModDict = PyModule_GetDict(m); |
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538 | SetDictInt("MPI_ANY_TAG", MPI_ANY_TAG); |
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539 | SetDictInt("MPI_ANY_SOURCE", MPI_ANY_SOURCE); |
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540 | SetDictInt("mpi_MAX", mpi_MAX); |
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541 | SetDictInt("mpi_MIN", mpi_MIN); |
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542 | SetDictInt("mpi_SUM", mpi_SUM); |
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543 | SetDictInt("mpi_PROD", mpi_PROD); |
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544 | SetDictInt("mpi_LAND", mpi_LAND); |
---|
545 | SetDictInt("mpi_BAND", mpi_BAND); |
---|
546 | SetDictInt("mpi_LOR", mpi_LOR); |
---|
547 | SetDictInt("mpi_BOR", mpi_BOR); |
---|
548 | SetDictInt("mpi_LXOR", mpi_LXOR); |
---|
549 | SetDictInt("mpi_BXOR", mpi_BXOR); |
---|
550 | SetDictInt("mpi_MAXLOC", mpi_MAXLOC); |
---|
551 | SetDictInt("mpi_MINLOC", mpi_MINLOC); |
---|
552 | SetDictInt("mpi_REPLACE", mpi_REPLACE); |
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553 | |
---|
554 | //SetDictInt("MPI_COMM_WORLD", MPI_COMM_WORLD); |
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555 | |
---|
556 | import_array(); //Necessary for handling of NumPY structures |
---|
557 | } |
---|
558 | |
---|
559 | |
---|
560 | |
---|
561 | |
---|
562 | |
---|
563 | /*********************************************************************/ |
---|
564 | /* OBSOLETE STUFF */ |
---|
565 | /*********************************************************************/ |
---|
566 | |
---|
567 | /******************************************/ |
---|
568 | /* keep for doc of Numeric arrays etc */ |
---|
569 | /******************************************/ |
---|
570 | |
---|
571 | void print_real_array(PyArrayObject *x) { |
---|
572 | int i; |
---|
573 | for (i=0; i<x->dimensions[0]; i++) { |
---|
574 | printf("%f ", *(double*) (x->data + i*x->strides[0])); |
---|
575 | } |
---|
576 | } |
---|
577 | |
---|
578 | void print_int_array(PyArrayObject *x) { |
---|
579 | int i; |
---|
580 | for (i=0; i<x->dimensions[0]; i++) { |
---|
581 | printf("%d ", *(int*) (x->data + i*x->strides[0])); |
---|
582 | } |
---|
583 | } |
---|
584 | |
---|
585 | |
---|
586 | /*********************************************************/ |
---|
587 | /* send_real_array */ |
---|
588 | /* Send Numeric array of double floating point numbers */ |
---|
589 | /* */ |
---|
590 | /*********************************************************/ |
---|
591 | static PyObject *send_real_array(PyObject *self, PyObject *args) { |
---|
592 | PyObject *input; |
---|
593 | PyArrayObject *x; |
---|
594 | int destination, tag, err; |
---|
595 | |
---|
596 | /* process the parameters */ |
---|
597 | if (!PyArg_ParseTuple(args, "Oii", &input, &destination, &tag)) |
---|
598 | return NULL; |
---|
599 | |
---|
600 | /* Make Numeric array from general sequence type (no cost if already Numeric)*/ |
---|
601 | x = (PyArrayObject *) |
---|
602 | PyArray_ContiguousFromObject(input, PyArray_DOUBLE, 0, 0); |
---|
603 | |
---|
604 | /* call the MPI routine */ |
---|
605 | err = MPI_Send(x->data, x->dimensions[0], MPI_DOUBLE, destination, tag,\ |
---|
606 | MPI_COMM_WORLD); |
---|
607 | |
---|
608 | Py_DECREF(x); |
---|
609 | return Py_BuildValue("i", err); |
---|
610 | } |
---|
611 | |
---|
612 | /**********************************************************/ |
---|
613 | /* receive_real_array */ |
---|
614 | /* Receive Numeric array of double floating point numbers */ |
---|
615 | /* */ |
---|
616 | /**********************************************************/ |
---|
617 | static PyObject *receive_real_array(PyObject *self, PyObject *args) { |
---|
618 | PyArrayObject *x; |
---|
619 | int source, tag, err; |
---|
620 | MPI_Status status; |
---|
621 | |
---|
622 | /* process the parameters */ |
---|
623 | if (!PyArg_ParseTuple(args, "Oii", &x, &source, &tag)) |
---|
624 | return NULL; |
---|
625 | |
---|
626 | /* call the MPI routine */ |
---|
627 | err = MPI_Recv(x->data, x->dimensions[0], MPI_DOUBLE, source, tag, \ |
---|
628 | MPI_COMM_WORLD, &status); |
---|
629 | |
---|
630 | |
---|
631 | return Py_BuildValue("i", err); |
---|
632 | } |
---|
633 | |
---|
634 | |
---|
635 | |
---|