| 1 |
!! MPI support for long range forces using force decomposition |
| 2 |
!! on a square grid of processors. |
| 3 |
!! Corresponds to mpiSimunation.cpp for C++ |
| 4 |
!! mpi_module also contains a private interface for mpi f90 routines. |
| 5 |
!! |
| 6 |
!! @author Charles F. Vardeman II |
| 7 |
!! @author Matthew Meineke |
| 8 |
!! @version $Id: mpiSimulation_module.F90,v 1.6 2003-01-30 22:29:58 chuckv Exp $, $Date: 2003-01-30 22:29:58 $, $Name: not supported by cvs2svn $, $Revision: 1.6 $ |
| 9 |
|
| 10 |
|
| 11 |
|
| 12 |
|
| 13 |
module mpiSimulation |
| 14 |
use definitions |
| 15 |
use mpi |
| 16 |
implicit none |
| 17 |
PRIVATE |
| 18 |
|
| 19 |
|
| 20 |
!! PUBLIC Subroutines contained in this module |
| 21 |
!! gather and scatter are a generic interface |
| 22 |
!! to gather and scatter routines |
| 23 |
public :: gather, scatter |
| 24 |
public :: setupSimParallel |
| 25 |
public :: replanSimParallel |
| 26 |
public :: getNcol |
| 27 |
public :: getNrow |
| 28 |
public :: isMPISimSet |
| 29 |
|
| 30 |
|
| 31 |
!! PUBLIC Subroutines contained in MPI module |
| 32 |
public :: mpi_bcast |
| 33 |
public :: mpi_allreduce |
| 34 |
public :: mpi_reduce |
| 35 |
public :: mpi_send |
| 36 |
public :: mpi_recv |
| 37 |
public :: mpi_get_processor_name |
| 38 |
public :: mpi_finalize |
| 39 |
|
| 40 |
!! PUBLIC mpi variables |
| 41 |
public :: mpi_comm_world |
| 42 |
public :: mpi_character |
| 43 |
public :: mpi_integer |
| 44 |
public :: mpi_double_precision |
| 45 |
public :: mpi_sum |
| 46 |
public :: mpi_max |
| 47 |
public :: mpi_status_size |
| 48 |
public :: mpi_any_source |
| 49 |
|
| 50 |
!! Safety logical to prevent access to ComponetPlan until |
| 51 |
!! set by C++. |
| 52 |
logical :: ComponentPlanSet = .false. |
| 53 |
|
| 54 |
|
| 55 |
!! generic mpi error declaration. |
| 56 |
integer,public :: mpi_err |
| 57 |
|
| 58 |
|
| 59 |
|
| 60 |
!! Include mpiComponentPlan type. mpiComponentPlan is a |
| 61 |
!! dual header file for both c and fortran. |
| 62 |
#define __FORTRAN90 |
| 63 |
#include "mpiComponentPlan.h" |
| 64 |
|
| 65 |
|
| 66 |
|
| 67 |
!! Tags used during force loop for parallel simulation |
| 68 |
integer, allocatable, dimension(:) :: tagLocal |
| 69 |
integer, public, allocatable, dimension(:) :: tagRow |
| 70 |
integer ,public, allocatable, dimension(:) :: tagColumn |
| 71 |
|
| 72 |
!! Logical set true if mpiSimulation has been initialized |
| 73 |
logical :: isSimSet = .false. |
| 74 |
|
| 75 |
|
| 76 |
type (mpiComponentPlan) :: mpiSim |
| 77 |
|
| 78 |
!! gs_plan contains plans for gather and scatter routines |
| 79 |
type, public :: gs_plan |
| 80 |
private |
| 81 |
type (mpiComponentPlan), pointer :: gsComponentPlan => NULL() |
| 82 |
integer :: gsPlanSize !! size of this plan (nDim*nComponents) |
| 83 |
integer :: globalPlanSize !! size of all components in plan |
| 84 |
integer, dimension(:), pointer :: displs !! Displacements array for mpi indexed from 0. |
| 85 |
integer, dimension(:), pointer :: counts !! Counts array for mpi indexed from 0. |
| 86 |
integer :: myPlanComm !! My communicator for this plan |
| 87 |
integer :: myPlanRank !! My rank in this plan |
| 88 |
integer :: planNprocs !! Number of processors in this plan |
| 89 |
end type gs_plan |
| 90 |
|
| 91 |
! plans for different decompositions |
| 92 |
type (gs_plan), public :: plan_row |
| 93 |
type (gs_plan), public :: plan_row3d |
| 94 |
type (gs_plan), public :: plan_col |
| 95 |
type (gs_plan), public :: plan_col3d |
| 96 |
|
| 97 |
type (mpiComponentPlan), pointer :: simComponentPlan |
| 98 |
|
| 99 |
! interface for gather scatter routines |
| 100 |
!! Generic interface for gather. |
| 101 |
!! Gathers an local array into row or column array |
| 102 |
!! Interface provided for integer, double and double |
| 103 |
!! rank 2 arrays. |
| 104 |
interface gather |
| 105 |
module procedure gather_integer |
| 106 |
module procedure gather_double |
| 107 |
module procedure gather_double_2d |
| 108 |
end interface |
| 109 |
|
| 110 |
!! Generic interface for scatter. |
| 111 |
!! Scatters a row or column array, adding componets |
| 112 |
!! and reducing them to a local nComponent array. |
| 113 |
!! Interface provided for double and double rank=2 arrays. |
| 114 |
interface scatter |
| 115 |
module procedure scatter_double |
| 116 |
module procedure scatter_double_2d |
| 117 |
end interface |
| 118 |
|
| 119 |
|
| 120 |
|
| 121 |
contains |
| 122 |
|
| 123 |
!! Sets up mpiComponentPlan with structure passed from C++. |
| 124 |
subroutine setupSimParallel(thisComponentPlan,ntags,tags,status) |
| 125 |
! Passed Arguments |
| 126 |
! integer, intent(inout) :: nDim !! Number of dimensions |
| 127 |
!! mpiComponentPlan struct from C |
| 128 |
type (mpiComponentPlan), intent(inout) :: thisComponentPlan |
| 129 |
!! Number of tags passed, nlocal |
| 130 |
integer, intent(in) :: ntags |
| 131 |
!! Result status, 0 = normal, -1 = error |
| 132 |
integer, intent(out) :: status |
| 133 |
integer :: localStatus |
| 134 |
!! Global reference tag for local particles |
| 135 |
integer, dimension(ntags),intent(inout) :: tags |
| 136 |
|
| 137 |
|
| 138 |
status = 0 |
| 139 |
if (componentPlanSet) then |
| 140 |
return |
| 141 |
endif |
| 142 |
componentPlanSet = .true. |
| 143 |
|
| 144 |
!! copy c component plan to fortran |
| 145 |
mpiSim = thisComponentPlan |
| 146 |
write(*,*) "Seting up simParallel" |
| 147 |
if (mpiSim%myNode == 0) then |
| 148 |
write(*,*) "SetupSimParallel: writing component plan" |
| 149 |
|
| 150 |
write(*,*) "nMolGlobal: ", mpiSim%nMolGlobal |
| 151 |
write(*,*) "nAtomsGlobal: ", mpiSim%nAtomsGlobal |
| 152 |
write(*,*) "nBondGlobal: ", mpiSim%nBondsGlobal |
| 153 |
write(*,*) "nTorsionsGlobal: ", mpiSim%nTorsionsGlobal |
| 154 |
write(*,*) "nSRIGlobal: ", mpiSim%nSRIGlobal |
| 155 |
write(*,*) "myMolStart: ", mpiSim%myMolStart |
| 156 |
write(*,*) "myMolEnd: ", mpiSim%myMolEnd |
| 157 |
write(*,*) "myMol: ", mpiSim%myMol |
| 158 |
write(*,*) "myNlocal: ", mpiSim%myNlocal |
| 159 |
write(*,*) "myNode: ", mpiSim%myNode |
| 160 |
write(*,*) "numberProcessors: ", mpiSim%numberProcessors |
| 161 |
write(*,*) "rowComm: ", mpiSim%rowComm |
| 162 |
write(*,*) "columnComm: ", mpiSim%columnComm |
| 163 |
write(*,*) "numberRows: ", mpiSim%numberRows |
| 164 |
write(*,*) "numberColumns: ", mpiSim%numberColumns |
| 165 |
write(*,*) "nComponentsRow: ", mpiSim%nComponentsRow |
| 166 |
write(*,*) "nComponentsColumn: ", mpiSim%nComponentsColumn |
| 167 |
write(*,*) "rowIndex: ", mpiSim%rowIndex |
| 168 |
write(*,*) "columnIndex: ", mpiSim%columnIndex |
| 169 |
endif |
| 170 |
|
| 171 |
|
| 172 |
call make_Force_Grid(mpiSim,localStatus) |
| 173 |
if (localStatus /= 0) then |
| 174 |
write(default_error,*) "Error creating force grid" |
| 175 |
status = -1 |
| 176 |
return |
| 177 |
endif |
| 178 |
|
| 179 |
call updateGridComponents(mpiSim,localStatus) |
| 180 |
if (localStatus /= 0) then |
| 181 |
write(default_error,*) "Error updating grid components" |
| 182 |
status = -1 |
| 183 |
return |
| 184 |
endif |
| 185 |
|
| 186 |
|
| 187 |
!! initialize gather and scatter plans used in this simulation |
| 188 |
call plan_gather_scatter(1,mpiSim%nComponentsRow,& |
| 189 |
mpiSim,mpiSim%rowComm,plan_row) |
| 190 |
call plan_gather_scatter(nDim,mpiSim%nComponentsRow,& |
| 191 |
mpiSim,mpiSim%rowComm,plan_row3d) |
| 192 |
call plan_gather_scatter(1,mpiSim%nComponentsColumn,& |
| 193 |
mpiSim,mpiSim%columnComm,plan_col) |
| 194 |
call plan_gather_scatter(nDim,mpiSim%nComponentsColumn,& |
| 195 |
mpiSim,mpiSim%columnComm,plan_col3d) |
| 196 |
|
| 197 |
! Initialize tags |
| 198 |
call setTags(tags,localStatus) |
| 199 |
if (localStatus /= 0) then |
| 200 |
status = -1 |
| 201 |
return |
| 202 |
endif |
| 203 |
isSimSet = .true. |
| 204 |
end subroutine setupSimParallel |
| 205 |
|
| 206 |
subroutine replanSimParallel(thisComponentPlan,status) |
| 207 |
! Passed Arguments |
| 208 |
!! mpiComponentPlan struct from C |
| 209 |
type (mpiComponentPlan), intent(inout) :: thisComponentPlan |
| 210 |
integer, intent(out) :: status |
| 211 |
integer :: localStatus |
| 212 |
integer :: mpierror |
| 213 |
status = 0 |
| 214 |
|
| 215 |
call updateGridComponents(thisComponentPlan,localStatus) |
| 216 |
if (localStatus /= 0) then |
| 217 |
status = -1 |
| 218 |
return |
| 219 |
endif |
| 220 |
|
| 221 |
!! Unplan Gather Scatter plans |
| 222 |
call unplan_gather_scatter(plan_row) |
| 223 |
call unplan_gather_scatter(plan_row3d) |
| 224 |
call unplan_gather_scatter(plan_col) |
| 225 |
call unplan_gather_scatter(plan_col3d) |
| 226 |
|
| 227 |
|
| 228 |
!! initialize gather and scatter plans used in this simulation |
| 229 |
call plan_gather_scatter(1,thisComponentPlan%nComponentsRow,& |
| 230 |
thisComponentPlan,thisComponentPlan%rowComm,plan_row) |
| 231 |
call plan_gather_scatter(nDim,thisComponentPlan%nComponentsRow,& |
| 232 |
thisComponentPlan,thisComponentPlan%rowComm,plan_row3d) |
| 233 |
call plan_gather_scatter(1,thisComponentPlan%nComponentsColumn,& |
| 234 |
thisComponentPlan,thisComponentPlan%columnComm,plan_col) |
| 235 |
call plan_gather_scatter(nDim,thisComponentPlan%nComponentsColumn,& |
| 236 |
thisComponentPlan,thisComponentPlan%rowComm,plan_col3d) |
| 237 |
|
| 238 |
|
| 239 |
|
| 240 |
end subroutine replanSimParallel |
| 241 |
|
| 242 |
!! Updates number of row and column components for long range forces. |
| 243 |
subroutine updateGridComponents(thisComponentPlan,status) |
| 244 |
type (mpiComponentPlan) :: thisComponentPlan !! mpiComponentPlan |
| 245 |
|
| 246 |
!! Status return |
| 247 |
!! - 0 Success |
| 248 |
!! - -1 Failure |
| 249 |
integer, intent(out) :: status |
| 250 |
integer :: nComponentsLocal |
| 251 |
integer :: nComponentsRow = 0 |
| 252 |
integer :: nComponentsColumn = 0 |
| 253 |
integer :: mpiErrors |
| 254 |
|
| 255 |
status = 0 |
| 256 |
if (.not. componentPlanSet) return |
| 257 |
|
| 258 |
if (thisComponentPlan%myNlocal == 0 ) then |
| 259 |
status = -1 |
| 260 |
return |
| 261 |
endif |
| 262 |
|
| 263 |
nComponentsLocal = thisComponentPlan%myNlocal |
| 264 |
|
| 265 |
call mpi_allreduce(nComponentsLocal,nComponentsRow,1,mpi_integer,& |
| 266 |
mpi_sum,thisComponentPlan%rowComm,mpiErrors) |
| 267 |
if (mpiErrors /= 0) then |
| 268 |
status = -1 |
| 269 |
return |
| 270 |
endif |
| 271 |
|
| 272 |
call mpi_allreduce(nComponentsLocal,nComponentsColumn,1,mpi_integer, & |
| 273 |
mpi_sum,thisComponentPlan%columnComm,mpiErrors) |
| 274 |
if (mpiErrors /= 0) then |
| 275 |
status = -1 |
| 276 |
return |
| 277 |
endif |
| 278 |
|
| 279 |
thisComponentPlan%nComponentsRow = nComponentsRow |
| 280 |
thisComponentPlan%nComponentsColumn = nComponentsColumn |
| 281 |
|
| 282 |
|
| 283 |
end subroutine updateGridComponents |
| 284 |
|
| 285 |
|
| 286 |
!! Creates a square force decomposition of processors into row and column |
| 287 |
!! communicators. |
| 288 |
subroutine make_Force_Grid(thisComponentPlan,status) |
| 289 |
type (mpiComponentPlan) :: thisComponentPlan |
| 290 |
integer, intent(out) :: status !! status returns -1 if error |
| 291 |
integer :: nColumnsMax !! Maximum number of columns |
| 292 |
integer :: nWorldProcessors !! Total number of processors in World comm. |
| 293 |
integer :: rowIndex !! Row for this processor. |
| 294 |
integer :: columnIndex !! Column for this processor. |
| 295 |
integer :: nRows !! Total number of rows. |
| 296 |
integer :: nColumns !! Total number of columns. |
| 297 |
integer :: mpiErrors !! MPI errors. |
| 298 |
integer :: rowCommunicator !! MPI row communicator. |
| 299 |
integer :: columnCommunicator |
| 300 |
integer :: myWorldRank |
| 301 |
integer :: i |
| 302 |
|
| 303 |
|
| 304 |
if (.not. ComponentPlanSet) return |
| 305 |
status = 0 |
| 306 |
|
| 307 |
!! We make a dangerous assumption here that if numberProcessors is |
| 308 |
!! zero, then we need to get the information from MPI. |
| 309 |
if (thisComponentPlan%numberProcessors == 0 ) then |
| 310 |
call mpi_comm_size( MPI_COMM_WORLD, nWorldProcessors,mpiErrors) |
| 311 |
if ( mpiErrors /= 0 ) then |
| 312 |
status = -1 |
| 313 |
return |
| 314 |
endif |
| 315 |
call mpi_comm_rank( MPI_COMM_WORLD,myWorldRank,mpiErrors) |
| 316 |
if ( mpiErrors /= 0 ) then |
| 317 |
status = -1 |
| 318 |
return |
| 319 |
endif |
| 320 |
|
| 321 |
else |
| 322 |
nWorldProcessors = thisComponentPlan%numberProcessors |
| 323 |
myWorldRank = thisComponentPlan%myNode |
| 324 |
endif |
| 325 |
|
| 326 |
|
| 327 |
|
| 328 |
|
| 329 |
nColumnsMax = nint(sqrt(real(nWorldProcessors,kind=dp))) |
| 330 |
|
| 331 |
do i = 1, nColumnsMax |
| 332 |
if (mod(nWorldProcessors,i) == 0) nColumns = i |
| 333 |
end do |
| 334 |
|
| 335 |
nRows = nWorldProcessors/nColumns |
| 336 |
|
| 337 |
rowIndex = myWorldRank/nColumns |
| 338 |
|
| 339 |
|
| 340 |
|
| 341 |
call mpi_comm_split(mpi_comm_world,rowIndex,0,rowCommunicator,mpiErrors) |
| 342 |
if ( mpiErrors /= 0 ) then |
| 343 |
write(default_error,*) "MPI comm split failed at row communicator" |
| 344 |
status = -1 |
| 345 |
return |
| 346 |
endif |
| 347 |
|
| 348 |
columnIndex = mod(myWorldRank,nColumns) |
| 349 |
call mpi_comm_split(mpi_comm_world,columnIndex,0,columnCommunicator,mpiErrors) |
| 350 |
if ( mpiErrors /= 0 ) then |
| 351 |
write(default_error,*) "MPI comm split faild at columnCommunicator" |
| 352 |
status = -1 |
| 353 |
return |
| 354 |
endif |
| 355 |
|
| 356 |
! Set appropriate components of thisComponentPlan |
| 357 |
thisComponentPlan%rowComm = rowCommunicator |
| 358 |
thisComponentPlan%columnComm = columnCommunicator |
| 359 |
thisComponentPlan%rowIndex = rowIndex |
| 360 |
thisComponentPlan%columnIndex = columnIndex |
| 361 |
thisComponentPlan%numberRows = nRows |
| 362 |
thisComponentPlan%numberColumns = nColumns |
| 363 |
|
| 364 |
|
| 365 |
end subroutine make_Force_Grid |
| 366 |
|
| 367 |
|
| 368 |
!! initalizes a gather scatter plan |
| 369 |
subroutine plan_gather_scatter( nDim,nComponents,thisComponentPlan, & |
| 370 |
thisComm, this_plan,status) |
| 371 |
integer, intent(in) :: nDim !! Number of dimensions for gather scatter plan |
| 372 |
integer, intent(in) :: nComponents |
| 373 |
type (mpiComponentPlan), intent(in), target :: thisComponentPlan |
| 374 |
type (gs_plan), intent(out) :: this_plan !! MPI Component Plan |
| 375 |
integer, intent(in) :: thisComm !! MPI communicator for this plan |
| 376 |
|
| 377 |
integer :: arraySize !! size to allocate plan for |
| 378 |
integer, intent(out), optional :: status |
| 379 |
integer :: ierror |
| 380 |
integer :: i,junk |
| 381 |
|
| 382 |
if (present(status)) status = 0 |
| 383 |
|
| 384 |
|
| 385 |
!! Set gsComponetPlan pointer |
| 386 |
!! to the componet plan we want to use for this gather scatter plan. |
| 387 |
!! WARNING this could be dangerous since thisComponentPlan was origionally |
| 388 |
!! allocated in C++ and there is a significant difference between c and |
| 389 |
!! f95 pointers.... |
| 390 |
this_plan%gsComponentPlan => thisComponentPlan |
| 391 |
|
| 392 |
! Set this plan size for displs array. |
| 393 |
this_plan%gsPlanSize = nDim * nComponents |
| 394 |
|
| 395 |
! Duplicate communicator for this plan |
| 396 |
call mpi_comm_dup(thisComm,this_plan%myPlanComm,mpi_err) |
| 397 |
if (mpi_err /= 0) then |
| 398 |
if (present(status)) status = -1 |
| 399 |
return |
| 400 |
end if |
| 401 |
call mpi_comm_rank(this_plan%myPlanComm,this_plan%myPlanRank,mpi_err) |
| 402 |
if (mpi_err /= 0) then |
| 403 |
if (present(status)) status = -1 |
| 404 |
return |
| 405 |
end if |
| 406 |
|
| 407 |
call mpi_comm_size(this_plan%myPlanComm,this_plan%planNprocs,mpi_err) |
| 408 |
|
| 409 |
if (mpi_err /= 0) then |
| 410 |
if (present(status)) status = -1 |
| 411 |
return |
| 412 |
end if |
| 413 |
|
| 414 |
!! counts and displacements arrays are indexed from 0 to be compatable |
| 415 |
!! with MPI arrays. |
| 416 |
allocate (this_plan%counts(0:this_plan%planNprocs-1),STAT=ierror) |
| 417 |
if (ierror /= 0) then |
| 418 |
if (present(status)) status = -1 |
| 419 |
return |
| 420 |
end if |
| 421 |
|
| 422 |
allocate (this_plan%displs(0:this_plan%planNprocs-1),STAT=ierror) |
| 423 |
if (ierror /= 0) then |
| 424 |
if (present(status)) status = -1 |
| 425 |
return |
| 426 |
end if |
| 427 |
|
| 428 |
!! gather all the local sizes into a size # processors array. |
| 429 |
call mpi_allgather(this_plan%gsPlanSize,1,mpi_integer,this_plan%counts, & |
| 430 |
1,mpi_integer,thisComm,mpi_err) |
| 431 |
|
| 432 |
if (mpi_err /= 0) then |
| 433 |
if (present(status)) status = -1 |
| 434 |
return |
| 435 |
end if |
| 436 |
|
| 437 |
|
| 438 |
!! figure out the total number of particles in this plan |
| 439 |
this_plan%globalPlanSize = sum(this_plan%counts) |
| 440 |
|
| 441 |
|
| 442 |
!! initialize plan displacements. |
| 443 |
this_plan%displs(0) = 0 |
| 444 |
do i = 1, this_plan%planNprocs - 1,1 |
| 445 |
this_plan%displs(i) = this_plan%displs(i-1) + this_plan%counts(i-1) |
| 446 |
end do |
| 447 |
|
| 448 |
end subroutine plan_gather_scatter |
| 449 |
|
| 450 |
|
| 451 |
subroutine unplan_gather_scatter(this_plan) |
| 452 |
type (gs_plan), intent(inout) :: this_plan |
| 453 |
|
| 454 |
|
| 455 |
this_plan%gsComponentPlan => null() |
| 456 |
call mpi_comm_free(this_plan%myPlanComm,mpi_err) |
| 457 |
|
| 458 |
deallocate(this_plan%counts) |
| 459 |
deallocate(this_plan%displs) |
| 460 |
|
| 461 |
end subroutine unplan_gather_scatter |
| 462 |
|
| 463 |
subroutine gather_integer( sbuffer, rbuffer, this_plan, status) |
| 464 |
|
| 465 |
type (gs_plan), intent(in) :: this_plan |
| 466 |
integer, dimension(:), intent(in) :: sbuffer |
| 467 |
integer, dimension(:), intent(in) :: rbuffer |
| 468 |
integer :: noffset |
| 469 |
integer, intent(out), optional :: status |
| 470 |
integer :: i |
| 471 |
|
| 472 |
|
| 473 |
if (present(status)) status = 0 |
| 474 |
noffset = this_plan%displs(this_plan%myPlanRank) |
| 475 |
|
| 476 |
call mpi_allgatherv(sbuffer,this_plan%gsPlanSize, mpi_integer, & |
| 477 |
rbuffer,this_plan%counts,this_plan%displs,mpi_integer, & |
| 478 |
this_plan%myPlanComm, mpi_err) |
| 479 |
|
| 480 |
if (mpi_err /= 0) then |
| 481 |
if (present(status)) status = -1 |
| 482 |
endif |
| 483 |
|
| 484 |
end subroutine gather_integer |
| 485 |
|
| 486 |
subroutine gather_double( sbuffer, rbuffer, this_plan, status) |
| 487 |
|
| 488 |
type (gs_plan), intent(in) :: this_plan |
| 489 |
real( kind = DP ), dimension(:), intent(in) :: sbuffer |
| 490 |
real( kind = DP ), dimension(:), intent(in) :: rbuffer |
| 491 |
integer :: noffset |
| 492 |
integer, intent(out), optional :: status |
| 493 |
|
| 494 |
if (present(status)) status = 0 |
| 495 |
noffset = this_plan%displs(this_plan%myPlanRank) |
| 496 |
|
| 497 |
call mpi_allgatherv(sbuffer,this_plan%gsPlanSize, mpi_double_precision, & |
| 498 |
rbuffer,this_plan%counts,this_plan%displs,mpi_double_precision, & |
| 499 |
this_plan%myPlanComm, mpi_err) |
| 500 |
|
| 501 |
if (mpi_err /= 0) then |
| 502 |
if (present(status)) status = -1 |
| 503 |
endif |
| 504 |
|
| 505 |
end subroutine gather_double |
| 506 |
|
| 507 |
subroutine gather_double_2d( sbuffer, rbuffer, this_plan, status) |
| 508 |
|
| 509 |
type (gs_plan), intent(in) :: this_plan |
| 510 |
real( kind = DP ), dimension(:,:), intent(in) :: sbuffer |
| 511 |
real( kind = DP ), dimension(:,:), intent(in) :: rbuffer |
| 512 |
integer :: noffset,i,ierror |
| 513 |
integer, intent(out), optional :: status |
| 514 |
|
| 515 |
external mpi_allgatherv |
| 516 |
|
| 517 |
if (present(status)) status = 0 |
| 518 |
|
| 519 |
! noffset = this_plan%displs(this_plan%me) |
| 520 |
|
| 521 |
call mpi_allgatherv(sbuffer,this_plan%gsPlanSize, mpi_double_precision, & |
| 522 |
rbuffer,this_plan%counts,this_plan%displs,mpi_double_precision, & |
| 523 |
this_plan%myPlanComm, mpi_err) |
| 524 |
|
| 525 |
if (mpi_err /= 0) then |
| 526 |
if (present(status)) status = -1 |
| 527 |
endif |
| 528 |
|
| 529 |
end subroutine gather_double_2d |
| 530 |
|
| 531 |
subroutine scatter_double( sbuffer, rbuffer, this_plan, status) |
| 532 |
|
| 533 |
type (gs_plan), intent(in) :: this_plan |
| 534 |
real( kind = DP ), dimension(:), intent(in) :: sbuffer |
| 535 |
real( kind = DP ), dimension(:), intent(in) :: rbuffer |
| 536 |
integer, intent(out), optional :: status |
| 537 |
external mpi_reduce_scatter |
| 538 |
|
| 539 |
if (present(status)) status = 0 |
| 540 |
|
| 541 |
call mpi_reduce_scatter(sbuffer,rbuffer, this_plan%counts, & |
| 542 |
mpi_double_precision, MPI_SUM, this_plan%myPlanComm, mpi_err) |
| 543 |
|
| 544 |
if (mpi_err /= 0) then |
| 545 |
if (present(status)) status = -1 |
| 546 |
endif |
| 547 |
|
| 548 |
end subroutine scatter_double |
| 549 |
|
| 550 |
subroutine scatter_double_2d( sbuffer, rbuffer, this_plan, status) |
| 551 |
|
| 552 |
type (gs_plan), intent(in) :: this_plan |
| 553 |
real( kind = DP ), dimension(:,:), intent(in) :: sbuffer |
| 554 |
real( kind = DP ), dimension(:,:), intent(in) :: rbuffer |
| 555 |
integer, intent(out), optional :: status |
| 556 |
external mpi_reduce_scatter |
| 557 |
|
| 558 |
if (present(status)) status = 0 |
| 559 |
call mpi_reduce_scatter(sbuffer,rbuffer, this_plan%counts, & |
| 560 |
mpi_double_precision, MPI_SUM, this_plan%myPlanComm, mpi_err) |
| 561 |
|
| 562 |
if (mpi_err /= 0) then |
| 563 |
if (present(status)) status = -1 |
| 564 |
endif |
| 565 |
|
| 566 |
end subroutine scatter_double_2d |
| 567 |
|
| 568 |
|
| 569 |
subroutine setTags(tags,status) |
| 570 |
integer, dimension(:) :: tags |
| 571 |
integer :: status |
| 572 |
|
| 573 |
integer :: alloc_stat |
| 574 |
|
| 575 |
integer :: ncol |
| 576 |
integer :: nrow |
| 577 |
|
| 578 |
status = 0 |
| 579 |
! allocate row arrays |
| 580 |
nrow = getNrow(plan_row) |
| 581 |
ncol = getNcol(plan_col) |
| 582 |
|
| 583 |
if (.not. allocated(tagRow)) then |
| 584 |
allocate(tagRow(nrow),STAT=alloc_stat) |
| 585 |
if (alloc_stat /= 0 ) then |
| 586 |
status = -1 |
| 587 |
return |
| 588 |
endif |
| 589 |
else |
| 590 |
deallocate(tagRow) |
| 591 |
allocate(tagRow(nrow),STAT=alloc_stat) |
| 592 |
if (alloc_stat /= 0 ) then |
| 593 |
status = -1 |
| 594 |
return |
| 595 |
endif |
| 596 |
|
| 597 |
endif |
| 598 |
! allocate column arrays |
| 599 |
if (.not. allocated(tagColumn)) then |
| 600 |
allocate(tagColumn(ncol),STAT=alloc_stat) |
| 601 |
if (alloc_stat /= 0 ) then |
| 602 |
status = -1 |
| 603 |
return |
| 604 |
endif |
| 605 |
else |
| 606 |
deallocate(tagColumn) |
| 607 |
allocate(tagColumn(ncol),STAT=alloc_stat) |
| 608 |
if (alloc_stat /= 0 ) then |
| 609 |
status = -1 |
| 610 |
return |
| 611 |
endif |
| 612 |
endif |
| 613 |
|
| 614 |
call gather(tags,tagRow,plan_row) |
| 615 |
call gather(tags,tagColumn,plan_col) |
| 616 |
|
| 617 |
|
| 618 |
end subroutine setTags |
| 619 |
|
| 620 |
pure function getNcol(thisplan) result(ncol) |
| 621 |
type (gs_plan), intent(in) :: thisplan |
| 622 |
integer :: ncol |
| 623 |
ncol = thisplan%gsComponentPlan%nComponentsColumn |
| 624 |
end function getNcol |
| 625 |
|
| 626 |
pure function getNrow(thisplan) result(ncol) |
| 627 |
type (gs_plan), intent(in) :: thisplan |
| 628 |
integer :: ncol |
| 629 |
ncol = thisplan%gsComponentPlan%nComponentsrow |
| 630 |
end function getNrow |
| 631 |
|
| 632 |
function isMPISimSet() result(isthisSimSet) |
| 633 |
logical :: isthisSimSet |
| 634 |
if (isSimSet) then |
| 635 |
isthisSimSet = .true. |
| 636 |
else |
| 637 |
isthisSimSet = .false. |
| 638 |
endif |
| 639 |
end function isMPISimSet |
| 640 |
|
| 641 |
|
| 642 |
|
| 643 |
|
| 644 |
end module mpiSimulation |
| 645 |
|
