| 1 | ######################################################### |
|---|
| 2 | # |
|---|
| 3 | # Handle the communication between the host machine |
|---|
| 4 | # (processor 0) and the processors. The host machine is |
|---|
| 5 | # responsible for the doing the initial grid partitioning. |
|---|
| 6 | # |
|---|
| 7 | # The routines given below should be moved to the |
|---|
| 8 | # build_submesh.py and build_local.py file to allow |
|---|
| 9 | # overlapping of communication and computation. |
|---|
| 10 | # This should be done after more debugging. |
|---|
| 11 | # |
|---|
| 12 | # |
|---|
| 13 | # Author: Linda Stals, June 2005 |
|---|
| 14 | # Modified: Linda Stals, Nov 2005 (optimise python code) |
|---|
| 15 | # |
|---|
| 16 | # |
|---|
| 17 | ######################################################### |
|---|
| 18 | |
|---|
| 19 | from Numeric import array, Int, Float, zeros |
|---|
| 20 | import logging, logging.config |
|---|
| 21 | logger = logging.getLogger('parallel') |
|---|
| 22 | logger.setLevel(logging.WARNING) |
|---|
| 23 | |
|---|
| 24 | try: |
|---|
| 25 | logging.config.fileConfig('log.ini') |
|---|
| 26 | except: |
|---|
| 27 | pass |
|---|
| 28 | |
|---|
| 29 | |
|---|
| 30 | import sys |
|---|
| 31 | import pypar |
|---|
| 32 | |
|---|
| 33 | from build_local import build_local_mesh |
|---|
| 34 | |
|---|
| 35 | ######################################################### |
|---|
| 36 | # |
|---|
| 37 | # Send the submesh to processor p. |
|---|
| 38 | # |
|---|
| 39 | # *) The order and form is strongly coupled with |
|---|
| 40 | # rec_submesh. |
|---|
| 41 | # |
|---|
| 42 | # ------------------------------------------------------- |
|---|
| 43 | # |
|---|
| 44 | # *) All of the information has been sent to processor p. |
|---|
| 45 | # |
|---|
| 46 | ######################################################### |
|---|
| 47 | |
|---|
| 48 | def send_submesh(submesh, triangles_per_proc, p): |
|---|
| 49 | |
|---|
| 50 | print "pypar sending submesh to processor ",p |
|---|
| 51 | |
|---|
| 52 | # build and send the tagmap for the boundary conditions |
|---|
| 53 | |
|---|
| 54 | tagmap = {} |
|---|
| 55 | counter = 1 |
|---|
| 56 | for b in submesh["full_boundary"][p]: |
|---|
| 57 | bkey = submesh["full_boundary"][p][b] |
|---|
| 58 | if not tagmap.has_key(bkey): |
|---|
| 59 | tagmap[bkey] = counter |
|---|
| 60 | counter = counter+1 |
|---|
| 61 | pypar.send(tagmap, p) |
|---|
| 62 | |
|---|
| 63 | # send the quantities key information |
|---|
| 64 | |
|---|
| 65 | pypar.send(submesh["full_quan"].keys(), p) |
|---|
| 66 | |
|---|
| 67 | # send the number of triangles per processor |
|---|
| 68 | |
|---|
| 69 | pypar.send(triangles_per_proc, p, use_buffer=True) |
|---|
| 70 | |
|---|
| 71 | # compress full_commun |
|---|
| 72 | |
|---|
| 73 | flat_full_commun = [] |
|---|
| 74 | |
|---|
| 75 | for c in submesh["full_commun"][p]: |
|---|
| 76 | for i in range(len(submesh["full_commun"][p][c])): |
|---|
| 77 | flat_full_commun.append([c,submesh["full_commun"][p][c][i]]) |
|---|
| 78 | |
|---|
| 79 | # send the array sizes so memory can be allocated |
|---|
| 80 | |
|---|
| 81 | setup_array = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] |
|---|
| 82 | setup_array[0] = len(submesh["full_nodes"][p]) |
|---|
| 83 | setup_array[1] = len(submesh["ghost_nodes"][p]) |
|---|
| 84 | setup_array[2] = len(submesh["full_triangles"][p]) |
|---|
| 85 | setup_array[3] = len(submesh["ghost_triangles"][p]) |
|---|
| 86 | setup_array[4] = len(submesh["full_boundary"][p]) |
|---|
| 87 | setup_array[5] = len(submesh["ghost_commun"][p]) |
|---|
| 88 | setup_array[6] = len(flat_full_commun) |
|---|
| 89 | |
|---|
| 90 | pypar.send(setup_array, p) |
|---|
| 91 | |
|---|
| 92 | # send the nodes |
|---|
| 93 | |
|---|
| 94 | pypar.send(submesh["full_nodes"][p], p, use_buffer=True) |
|---|
| 95 | pypar.send(submesh["ghost_nodes"][p], p, use_buffer=True) |
|---|
| 96 | |
|---|
| 97 | # send the triangles |
|---|
| 98 | |
|---|
| 99 | pypar.send(array(submesh["full_triangles"][p], Int), p, use_buffer=True) |
|---|
| 100 | pypar.send(submesh["ghost_triangles"][p], p, use_buffer=True) |
|---|
| 101 | |
|---|
| 102 | # send the boundary |
|---|
| 103 | |
|---|
| 104 | bc = [] |
|---|
| 105 | for b in submesh["full_boundary"][p]: |
|---|
| 106 | bc.append([b[0], b[1], tagmap[submesh["full_boundary"][p][b]]]) |
|---|
| 107 | pypar.send(bc, p, use_buffer=True) |
|---|
| 108 | |
|---|
| 109 | # send the communication pattern |
|---|
| 110 | |
|---|
| 111 | pypar.send(submesh["ghost_commun"][p], p, use_buffer=True) |
|---|
| 112 | pypar.send(flat_full_commun, p, use_buffer=True) |
|---|
| 113 | |
|---|
| 114 | # send the quantities |
|---|
| 115 | |
|---|
| 116 | for k in submesh["full_quan"]: |
|---|
| 117 | pypar.send(submesh["full_quan"][k][p], p, use_buffer=True) |
|---|
| 118 | |
|---|
| 119 | for k in submesh["ghost_quan"]: |
|---|
| 120 | pypar.send(submesh["ghost_quan"][k][p], p, use_buffer=True) |
|---|
| 121 | |
|---|
| 122 | |
|---|
| 123 | ######################################################### |
|---|
| 124 | # |
|---|
| 125 | # Receive the submesh from processor p. |
|---|
| 126 | # |
|---|
| 127 | # *) The order and form is strongly coupled with |
|---|
| 128 | # send_submesh. |
|---|
| 129 | # |
|---|
| 130 | # ------------------------------------------------------- |
|---|
| 131 | # |
|---|
| 132 | # *) All of the information has been received by the |
|---|
| 133 | # processor p and passed into build_local. |
|---|
| 134 | # |
|---|
| 135 | # *) The information is returned in a form needed by the |
|---|
| 136 | # GA datastructure. |
|---|
| 137 | # |
|---|
| 138 | ######################################################### |
|---|
| 139 | |
|---|
| 140 | def rec_submesh_flat(p): |
|---|
| 141 | |
|---|
| 142 | numproc = pypar.size() |
|---|
| 143 | myid = pypar.rank() |
|---|
| 144 | |
|---|
| 145 | submesh_cell = {} |
|---|
| 146 | |
|---|
| 147 | print "pypar receiving submesh from processor ",p |
|---|
| 148 | |
|---|
| 149 | # receive the tagmap for the boundary conditions |
|---|
| 150 | |
|---|
| 151 | tagmap = pypar.receive(p) |
|---|
| 152 | |
|---|
| 153 | # receive the quantities key information |
|---|
| 154 | |
|---|
| 155 | qkeys = pypar.receive(p) |
|---|
| 156 | |
|---|
| 157 | # receive the number of triangles per processor |
|---|
| 158 | |
|---|
| 159 | triangles_per_proc = [] |
|---|
| 160 | for i in range(numproc): |
|---|
| 161 | triangles_per_proc.append([0]) |
|---|
| 162 | |
|---|
| 163 | triangles_per_proc = pypar.receive(p, triangles_per_proc) |
|---|
| 164 | |
|---|
| 165 | # recieve information about the array sizes |
|---|
| 166 | |
|---|
| 167 | setup_array = [0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0] |
|---|
| 168 | setup_array = pypar.receive(p, setup_array) |
|---|
| 169 | |
|---|
| 170 | # receive the full nodes |
|---|
| 171 | |
|---|
| 172 | no_full_nodes = setup_array[0] |
|---|
| 173 | full_nodes = zeros((no_full_nodes, 3), Float) |
|---|
| 174 | submesh_cell["full_nodes"] = pypar.receive(p, full_nodes) |
|---|
| 175 | |
|---|
| 176 | # receive the ghost nodes |
|---|
| 177 | |
|---|
| 178 | no_ghost_nodes = setup_array[1] |
|---|
| 179 | ghost_nodes = zeros((no_ghost_nodes, 3), Float) |
|---|
| 180 | submesh_cell["ghost_nodes"] = pypar.receive(p, ghost_nodes) |
|---|
| 181 | |
|---|
| 182 | |
|---|
| 183 | # receive the full triangles |
|---|
| 184 | |
|---|
| 185 | no_full_triangles = setup_array[2] |
|---|
| 186 | full_triangles = zeros((no_full_triangles, 3), Int) |
|---|
| 187 | submesh_cell["full_triangles"] = pypar.receive(p, full_triangles) |
|---|
| 188 | |
|---|
| 189 | # receive the ghost triangles |
|---|
| 190 | |
|---|
| 191 | no_ghost_triangles = setup_array[3] |
|---|
| 192 | ghost_triangles = zeros((no_ghost_triangles, 4), Int) |
|---|
| 193 | submesh_cell["ghost_triangles"] = pypar.receive(p, ghost_triangles) |
|---|
| 194 | |
|---|
| 195 | # receive the full boundary |
|---|
| 196 | |
|---|
| 197 | no_full_boundary = setup_array[4] |
|---|
| 198 | bc = [] |
|---|
| 199 | for i in range(no_full_boundary): |
|---|
| 200 | bc.append([0.0, 0.0, 0.0]) |
|---|
| 201 | bnd_c = pypar.receive(p, bc) |
|---|
| 202 | |
|---|
| 203 | itagmap = {} |
|---|
| 204 | for t in tagmap: |
|---|
| 205 | itagmap[tagmap[t]]=t |
|---|
| 206 | |
|---|
| 207 | submesh_cell["full_boundary"] = {} |
|---|
| 208 | for b in bnd_c: |
|---|
| 209 | submesh_cell["full_boundary"][b[0],b[1]]=itagmap[b[2]] |
|---|
| 210 | |
|---|
| 211 | # receive the ghost communication pattern |
|---|
| 212 | |
|---|
| 213 | no_ghost_commun = setup_array[5] |
|---|
| 214 | ghost_commun = zeros((no_ghost_commun, 2), Int) |
|---|
| 215 | submesh_cell["ghost_commun"] = pypar.receive(p, ghost_commun) |
|---|
| 216 | |
|---|
| 217 | # receive the full communication pattern |
|---|
| 218 | |
|---|
| 219 | no_full_commun = setup_array[6] |
|---|
| 220 | full_commun = [] |
|---|
| 221 | for i in range(no_full_commun): |
|---|
| 222 | full_commun.append([0.0, 0.0]) |
|---|
| 223 | |
|---|
| 224 | full_commun = pypar.receive(p, full_commun) |
|---|
| 225 | |
|---|
| 226 | submesh_cell["full_commun"] = {} |
|---|
| 227 | for c in full_commun: |
|---|
| 228 | submesh_cell["full_commun"][c[0]] = [] |
|---|
| 229 | for c in full_commun: |
|---|
| 230 | submesh_cell["full_commun"][c[0]].append(c[1]) |
|---|
| 231 | |
|---|
| 232 | # receive the quantities |
|---|
| 233 | |
|---|
| 234 | no_quantities = len(qkeys) |
|---|
| 235 | new_quan = zeros((no_full_triangles, 3), Float) |
|---|
| 236 | submesh_cell["full_quan"]={} |
|---|
| 237 | |
|---|
| 238 | for i in range(no_quantities): |
|---|
| 239 | tmp = pypar.receive(p, new_quan) |
|---|
| 240 | submesh_cell["full_quan"][qkeys[i]]=zeros((no_full_triangles,3), Float) |
|---|
| 241 | submesh_cell["full_quan"][qkeys[i]][:] = tmp[:] |
|---|
| 242 | |
|---|
| 243 | new_quan = zeros((no_ghost_triangles, 3), Float) |
|---|
| 244 | submesh_cell["ghost_quan"]={} |
|---|
| 245 | for i in range(no_quantities): |
|---|
| 246 | tmp = pypar.receive(p, new_quan) |
|---|
| 247 | submesh_cell["ghost_quan"][qkeys[i]]= zeros((no_ghost_triangles,3), Float) |
|---|
| 248 | submesh_cell["ghost_quan"][qkeys[i]][:] = tmp[:] |
|---|
| 249 | |
|---|
| 250 | return submesh_cell, triangles_per_proc |
|---|
| 251 | |
|---|
| 252 | |
|---|
| 253 | |
|---|
| 254 | ######################################################### |
|---|
| 255 | # |
|---|
| 256 | # Receive the submesh from processor p. |
|---|
| 257 | # |
|---|
| 258 | # *) The order and form is strongly coupled with |
|---|
| 259 | # send_submesh. |
|---|
| 260 | # |
|---|
| 261 | # ------------------------------------------------------- |
|---|
| 262 | # |
|---|
| 263 | # *) All of the information has been received by the |
|---|
| 264 | # processor p and passed into build_local. |
|---|
| 265 | # |
|---|
| 266 | # *) The information is returned in a form needed by the |
|---|
| 267 | # GA datastructure. |
|---|
| 268 | # |
|---|
| 269 | ######################################################### |
|---|
| 270 | |
|---|
| 271 | def rec_submesh(p): |
|---|
| 272 | |
|---|
| 273 | numproc = pypar.size() |
|---|
| 274 | myid = pypar.rank() |
|---|
| 275 | |
|---|
| 276 | [submesh_cell, triangles_per_proc] = rec_submesh_flat(p) |
|---|
| 277 | |
|---|
| 278 | # find the full triangles assigned to this processor |
|---|
| 279 | |
|---|
| 280 | lower_t = 0 |
|---|
| 281 | for i in range(myid): |
|---|
| 282 | lower_t = lower_t+triangles_per_proc[i] |
|---|
| 283 | upper_t = lower_t+triangles_per_proc[myid] |
|---|
| 284 | |
|---|
| 285 | # convert the information into a form needed by the GA |
|---|
| 286 | # datastructure |
|---|
| 287 | |
|---|
| 288 | [GAnodes, GAtriangles, boundary, quantities, ghost_rec, full_send] = \ |
|---|
| 289 | build_local_mesh(submesh_cell, lower_t, upper_t, \ |
|---|
| 290 | numproc) |
|---|
| 291 | |
|---|
| 292 | return GAnodes, GAtriangles, boundary, quantities, ghost_rec, full_send |
|---|
| 293 | |
|---|
| 294 | |
|---|
