| 1 | ######################################################### |
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| 2 | # |
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| 3 | # Handle the communication between the host machine |
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| 4 | # (processor 0) and the processors. The host machine is |
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| 5 | # responsible for the doing the initial grid partitioning. |
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| 6 | # |
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| 7 | # The routines given below should be moved to the |
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| 8 | # build_submesh.py and build_local.py file to allow |
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| 9 | # overlapping of communication and computation. |
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| 10 | # This should be done after more debugging. |
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| 11 | # |
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| 12 | # |
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| 13 | # Author: Linda Stals, June 2005 |
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| 14 | # |
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| 15 | # |
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| 16 | ######################################################### |
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| 17 | |
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| 18 | from Numeric import array, Int, Float |
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| 19 | import logging, logging.config |
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| 20 | logger = logging.getLogger('parallel') |
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| 21 | logger.setLevel(logging.WARNING) |
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| 22 | |
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| 23 | try: |
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| 24 | logging.config.fileConfig('log.ini') |
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| 25 | except: |
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| 26 | pass |
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| 27 | |
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| 28 | |
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| 29 | import sys |
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| 30 | import pypar |
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| 31 | from Numeric import zeros |
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| 32 | from build_local import * |
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| 33 | |
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| 34 | ######################################################### |
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| 35 | # |
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| 36 | # Send the submesh to processor p. |
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| 37 | # |
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| 38 | # *) The order and form is strongly coupled with |
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| 39 | # rec_submesh. |
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| 40 | # |
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| 41 | # ------------------------------------------------------- |
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| 42 | # |
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| 43 | # *) All of the information has been sent to processor p. |
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| 44 | # |
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| 45 | ######################################################### |
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| 46 | |
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| 47 | def send_submesh(submesh, triangles_per_proc, p): |
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| 48 | |
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| 49 | print "pypar sending submesh to processor ",p |
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| 50 | |
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| 51 | # build and send the tagmap for the boundary conditions |
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| 52 | |
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| 53 | tagmap = {} |
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| 54 | counter = 1 |
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| 55 | for b in submesh["full_boundary"][p]: |
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| 56 | bkey = submesh["full_boundary"][p][b] |
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| 57 | if not tagmap.has_key(bkey): |
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| 58 | tagmap[bkey] = counter |
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| 59 | counter = counter+1 |
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| 60 | pypar.send(tagmap, p) |
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| 61 | |
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| 62 | # send the quantities key information |
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| 63 | |
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| 64 | pypar.send(submesh["full_quan"].keys(), p) |
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| 65 | |
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| 66 | # send the number of triangles per processor |
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| 67 | |
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| 68 | pypar.send(triangles_per_proc, p, use_buffer=True) |
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| 69 | |
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| 70 | # compress full_commun |
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| 71 | |
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| 72 | flat_full_commun = [] |
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| 73 | |
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| 74 | |
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| 75 | for c in submesh["full_commun"][p]: |
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| 76 | for i in range(len(submesh["full_commun"][p][c])): |
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| 77 | flat_full_commun.append([c,submesh["full_commun"][p][c][i]]) |
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| 78 | |
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| 79 | # send the array sizes so memory can be allocated |
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| 80 | |
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| 81 | setup_array = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] |
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| 82 | setup_array[0] = len(submesh["full_nodes"][p]) |
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| 83 | setup_array[1] = len(submesh["ghost_nodes"][p]) |
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| 84 | setup_array[2] = len(submesh["full_triangles"][p]) |
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| 85 | setup_array[3] = len(submesh["ghost_triangles"][p]) |
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| 86 | setup_array[4] = len(submesh["full_boundary"][p]) |
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| 87 | setup_array[5] = len(submesh["ghost_commun"][p]) |
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| 88 | setup_array[6] = len(flat_full_commun) |
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| 89 | |
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| 90 | pypar.send(setup_array, p) |
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| 91 | |
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| 92 | # send the nodes |
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| 93 | |
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| 94 | pypar.send(submesh["full_nodes"][p], p, use_buffer=True) |
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| 95 | pypar.send(submesh["ghost_nodes"][p], p, use_buffer=True) |
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| 96 | |
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| 97 | # send the triangles |
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| 98 | |
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| 99 | pypar.send(array(submesh["full_triangles"][p], Int), p, use_buffer=True) |
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| 100 | pypar.send(submesh["ghost_triangles"][p], p, use_buffer=True) |
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| 101 | |
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| 102 | # send the boundary (is it quicker to send as an array?) |
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| 103 | |
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| 104 | bc = [] |
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| 105 | for b in submesh["full_boundary"][p]: |
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| 106 | bc.append([b[0], b[1], tagmap[submesh["full_boundary"][p][b]]]) |
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| 107 | pypar.send(bc, p, use_buffer=True) |
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| 108 | |
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| 109 | # send the communication pattern |
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| 110 | |
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| 111 | pypar.send(submesh["ghost_commun"][p], p, use_buffer=True) |
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| 112 | pypar.send(flat_full_commun, p, use_buffer=True) |
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| 113 | |
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| 114 | # send the quantities |
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| 115 | |
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| 116 | for k in submesh["full_quan"]: |
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| 117 | pypar.send(submesh["full_quan"][k][p], p, use_buffer=True) |
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| 118 | |
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| 119 | for k in submesh["ghost_quan"]: |
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| 120 | pypar.send(submesh["ghost_quan"][k][p], p, use_buffer=True) |
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| 121 | |
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| 122 | |
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| 123 | ######################################################### |
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| 124 | # |
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| 125 | # Receive the submesh from processor p. |
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| 126 | # |
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| 127 | # *) The order and form is strongly coupled with |
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| 128 | # send_submesh. |
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| 129 | # |
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| 130 | # ------------------------------------------------------- |
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| 131 | # |
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| 132 | # *) All of the information has been received by the |
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| 133 | # processor p and passed into build_local. |
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| 134 | # |
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| 135 | # *) The information is returned in a form needed by the |
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| 136 | # GA datastructure. |
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| 137 | # |
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| 138 | ######################################################### |
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| 139 | |
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| 140 | def rec_submesh(p): |
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| 141 | |
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| 142 | from Numeric import zeros, Float, Int |
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| 143 | |
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| 144 | numproc = pypar.size() |
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| 145 | myid = pypar.rank() |
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| 146 | |
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| 147 | submesh_cell = {} |
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| 148 | |
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| 149 | print "pypar receiving submesh from processor ",p |
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| 150 | |
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| 151 | # receive the tagmap for the boundary conditions |
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| 152 | |
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| 153 | tagmap = pypar.receive(p) |
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| 154 | |
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| 155 | # receive the quantities key information |
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| 156 | |
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| 157 | qkeys = pypar.receive(p) |
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| 158 | |
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| 159 | # receive the number of triangles per processor |
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| 160 | |
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| 161 | triangles_per_proc = [] |
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| 162 | for i in range(numproc): |
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| 163 | triangles_per_proc.append([0]) |
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| 164 | |
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| 165 | triangles_per_proc = pypar.receive(p, triangles_per_proc) |
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| 166 | |
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| 167 | # recieve information about the array sizes |
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| 168 | |
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| 169 | setup_array = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] |
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| 170 | setup_array = pypar.receive(p, setup_array) |
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| 171 | |
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| 172 | # receive the full nodes |
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| 173 | |
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| 174 | no_full_nodes = setup_array[0] |
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| 175 | full_nodes = [] |
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| 176 | for i in range(no_full_nodes): |
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| 177 | full_nodes.append([0.0, 0.0, 0.0]) |
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| 178 | submesh_cell["full_nodes"] = pypar.receive(p, full_nodes) |
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| 179 | |
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| 180 | # receive the ghost nodes |
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| 181 | |
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| 182 | no_ghost_nodes = setup_array[1] |
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| 183 | ghost_nodes = [] |
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| 184 | for i in range(no_ghost_nodes): |
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| 185 | ghost_nodes.append([0, 0.0, 0.0]) |
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| 186 | submesh_cell["ghost_nodes"] = pypar.receive(p, ghost_nodes) |
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| 187 | |
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| 188 | # receive the full triangles |
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| 189 | |
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| 190 | no_full_triangles = setup_array[2] |
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| 191 | submesh_cell["full_triangles"] = [] |
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| 192 | for i in range(no_full_triangles): |
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| 193 | submesh_cell["full_triangles"].append([0, 0, 0]) |
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| 194 | |
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| 195 | full_triangles = pypar.receive(p, array(submesh_cell["full_triangles"], Int)) |
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| 196 | |
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| 197 | for i in range(no_full_triangles): |
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| 198 | submesh_cell["full_triangles"][i][0] = full_triangles[i][0] |
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| 199 | submesh_cell["full_triangles"][i][1] = full_triangles[i][1] |
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| 200 | submesh_cell["full_triangles"][i][2] = full_triangles[i][2] |
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| 201 | |
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| 202 | # receive the ghost triangles |
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| 203 | |
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| 204 | no_ghost_triangles = setup_array[3] |
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| 205 | ghost_triangles = [] |
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| 206 | for i in range(no_ghost_triangles): |
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| 207 | ghost_triangles.append([0, [0.0, 0.0, 0.0]]) |
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| 208 | submesh_cell["ghost_triangles"] = pypar.receive(p, ghost_triangles) |
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| 209 | |
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| 210 | # receive the full boundary |
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| 211 | |
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| 212 | no_full_boundary = setup_array[4] |
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| 213 | bc = [] |
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| 214 | for i in range(no_full_boundary): |
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| 215 | bc.append([0.0, 0.0, 0.0]) |
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| 216 | bnd_c = pypar.receive(p, bc) |
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| 217 | |
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| 218 | itagmap = {} |
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| 219 | for t in tagmap: |
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| 220 | itagmap[tagmap[t]]=t |
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| 221 | |
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| 222 | submesh_cell["full_boundary"] = {} |
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| 223 | for b in bnd_c: |
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| 224 | submesh_cell["full_boundary"][b[0],b[1]]=itagmap[b[2]] |
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| 225 | |
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| 226 | # receive the ghost communication pattern |
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| 227 | |
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| 228 | no_ghost_commun = setup_array[5] |
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| 229 | ghost_commun = [] |
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| 230 | for i in range(no_ghost_commun): |
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| 231 | ghost_commun.append([0.0, 0.0]) |
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| 232 | |
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| 233 | submesh_cell["ghost_commun"] = pypar.receive(p, ghost_commun) |
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| 234 | |
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| 235 | # receive the full communication pattern |
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| 236 | |
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| 237 | no_full_commun = setup_array[6] |
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| 238 | full_commun = [] |
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| 239 | for i in range(no_full_commun): |
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| 240 | full_commun.append([0.0, 0.0]) |
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| 241 | |
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| 242 | full_commun = pypar.receive(p, full_commun) |
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| 243 | |
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| 244 | submesh_cell["full_commun"] = {} |
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| 245 | for c in full_commun: |
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| 246 | submesh_cell["full_commun"][c[0]] = [] |
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| 247 | for c in full_commun: |
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| 248 | submesh_cell["full_commun"][c[0]].append(c[1]) |
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| 249 | |
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| 250 | # receive the quantities |
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| 251 | |
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| 252 | no_quantities = len(qkeys) |
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| 253 | new_quan = zeros((no_full_triangles, 3), Float) |
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| 254 | submesh_cell["full_quan"]={} |
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| 255 | |
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| 256 | for i in range(no_quantities): |
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| 257 | tmp = pypar.receive(p, new_quan) |
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| 258 | submesh_cell["full_quan"][qkeys[i]]=zeros((no_full_triangles,3), Float) |
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| 259 | submesh_cell["full_quan"][qkeys[i]][:] = tmp[:] |
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| 260 | |
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| 261 | new_quan = zeros((no_ghost_triangles, 3), Float) |
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| 262 | submesh_cell["ghost_quan"]={} |
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| 263 | for i in range(no_quantities): |
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| 264 | tmp = pypar.receive(p, new_quan) |
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| 265 | submesh_cell["ghost_quan"][qkeys[i]]= zeros((no_ghost_triangles,3), Float) |
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| 266 | submesh_cell["ghost_quan"][qkeys[i]][:] = tmp[:] |
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| 267 | |
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| 268 | # find the full triangles assigned to this processor |
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| 269 | |
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| 270 | lower_t = 0 |
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| 271 | for i in range(myid): |
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| 272 | lower_t = lower_t+triangles_per_proc[i] |
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| 273 | upper_t = lower_t+triangles_per_proc[myid] |
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| 274 | |
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| 275 | # convert the information into a form needed by the GA |
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| 276 | # datastructure |
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| 277 | |
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| 278 | [GAnodes, GAtriangles, boundary, quantities, ghost_rec, full_send] = \ |
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| 279 | build_local_mesh(submesh_cell, lower_t, upper_t, \ |
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| 280 | numproc) |
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| 281 | |
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| 282 | return GAnodes, GAtriangles, boundary, quantities, ghost_rec, full_send |
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| 283 | |
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| 284 | |
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