| 1 | module Distribution_mod |
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| 2 | use SpMtx_aggregation |
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| 3 | |
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| 4 | Implicit none |
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| 5 | |
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| 6 | #include<doug_config.h> |
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| 7 | |
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| 8 | ! "on-the-fly" real/complex picking |
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| 9 | #ifdef D_COMPLEX |
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| 10 | #define float complex |
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| 11 | #else |
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| 12 | #define float real |
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| 13 | #endif |
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| 14 | |
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| 15 | contains |
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| 16 | subroutine SpMtx_DistributeAssembled(A,b,A_ghost,M,aggr) |
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| 17 | use Graph_class |
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| 18 | use Mesh_class |
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| 19 | implicit none |
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| 20 | |
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| 21 | type(SpMtx),intent(inout) :: A,A_ghost |
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| 22 | float(kind=rk),dimension(:),pointer :: b |
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| 23 | type(Mesh) :: M |
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| 24 | type(AggrInfo),intent(out) :: aggr |
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| 25 | !----------------------- |
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| 26 | integer :: i,j,k,ierr,n,ol |
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| 27 | integer, dimension(:), pointer :: xadj |
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| 28 | integer, dimension(:), pointer :: adjncy |
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| 29 | integer :: nedges |
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| 30 | type(Graph) :: G |
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| 31 | integer, dimension(6) :: part_opts = (/0,0,0,0,0,0/) |
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| 32 | integer,dimension(:),pointer :: clrorder,clrstarts |
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| 33 | integer, dimension(:), allocatable :: ccount !count colors |
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| 34 | integer,dimension(4) :: buf |
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| 35 | float(kind=rk),dimension(:),pointer :: b_tmp |
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| 36 | integer, parameter :: ONLY_METIS = 1 ! graph partitioner |
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| 37 | integer, parameter :: AGGRND_METIS = 2 ! rough aggregaion based on n random seeds |
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| 38 | integer,dimension(:),pointer :: tmpnum,owner |
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| 39 | ! going back for |
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| 40 | integer :: partitioning |
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| 41 | float(kind=rk) :: strong_conn1 |
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| 42 | integer :: aggr_radius1,min_asize1,max_asize1 |
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| 43 | |
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| 44 | if (numprocs>1) then |
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| 45 | if (sctls%radius1>=0) then |
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| 46 | partitioning=AGGRND_METIS |
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| 47 | else |
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| 48 | sctls%radius1=-sctls%radius1 |
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| 49 | partitioning=ONLY_METIS |
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| 50 | endif |
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| 51 | else |
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| 52 | partitioning=ONLY_METIS |
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| 53 | endif |
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| 54 | ol=max(sctls%overlap,sctls%smoothers) |
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| 55 | if (ismaster()) then ! Here master simply splits the matrix into pieces |
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| 56 | ! using METIS |
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| 57 | if (partitioning==AGGRND_METIS) then |
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| 58 | if (sctls%strong1/=0.0_rk) then |
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| 59 | strong_conn1=sctls%strong1 |
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| 60 | else |
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| 61 | strong_conn1=0.67_rk |
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| 62 | endif |
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| 63 | call SpMtx_find_strong(A,strong_conn1) |
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| 64 | if (sctls%radius1>0) then |
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| 65 | aggr_radius1=sctls%radius1+1 |
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| 66 | else |
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| 67 | aggr_radius1=3 |
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| 68 | endif |
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| 69 | if (sctls%minasize1>0) then |
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| 70 | min_asize1=sctls%minasize1 |
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| 71 | else |
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| 72 | min_asize1=0.5_rk*(2*aggr_radius1+1)**2 |
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| 73 | endif |
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| 74 | if (sctls%maxasize1>0) then |
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| 75 | max_asize1=sctls%maxasize1 |
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| 76 | else |
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| 77 | max_asize1=(2*aggr_radius1+1)**2 |
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| 78 | endif |
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| 79 | call SpMtx_roughly_aggregate(A=A, & |
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| 80 | aggr=aggr, & |
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| 81 | neighood=aggr_radius1,& |
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| 82 | maxaggrsize=max_asize1, & |
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| 83 | alpha=strong_conn1) |
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| 84 | call SpMtx_buildAggrAdjncy(A,aggr,max_asize1,nedges,xadj,adjncy) |
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| 85 | call SpMtx_unscale(A) !todo -- check |
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| 86 | G=Graph_newInit(aggr%inner%nagr,nedges,xadj,adjncy,D_GRAPH_NODAL) |
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| 87 | if (sctls%plotting==1.or.sctls%plotting==3) then |
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| 88 | allocate(owner(A%nrows)) |
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| 89 | do i=1,A%nnz |
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| 90 | if (A%indi(i)==A%indj(i)) then |
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| 91 | if (A%val(i)<1.0d0) then |
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| 92 | owner(A%indi(i))=1 |
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| 93 | else |
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| 94 | owner(A%indi(i))=2 |
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| 95 | endif |
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| 96 | endif |
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| 97 | enddo |
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| 98 | allocate(tmpnum(A%nrows)) |
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| 99 | tmpnum=(/(i,i=1,A%nrows)/) |
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| 100 | write(stream,*)'Initial Matrix structure -- 1: a(i,i)<1; 2: a(i,i)>=1 ' |
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| 101 | call color_print_aggrs(n=A%nrows,aggrnum=owner) |
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| 102 | write(stream,*)'...with numbering as follows: ' |
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| 103 | call color_print_aggrs(n=A%nrows,aggrnum=tmpnum,owner=owner) |
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| 104 | deallocate(tmpnum,owner) |
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| 105 | endif |
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| 106 | elseif (partitioning==ONLY_METIS) then |
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| 107 | call SpMtx_buildAdjncy(A,nedges,xadj,adjncy) |
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| 108 | G=Graph_newInit(A%nrows,nedges,xadj,adjncy,D_GRAPH_NODAL) |
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| 109 | endif |
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| 110 | ! Deallocate temporary arrays |
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| 111 | if (associated(xadj)) deallocate(xadj) |
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| 112 | if (associated(adjncy)) deallocate(adjncy) |
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| 113 | call Graph_Partition(G,numprocs,D_PART_VKMETIS,part_opts) |
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| 114 | if (partitioning==AGGRND_METIS) then |
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| 115 | do i=1,A%nrows |
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| 116 | aggr%inner%num(i)=G%part(aggr%inner%num(i)) |
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| 117 | enddo |
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| 118 | if (sctls%debug==1234) then |
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| 119 | open(77,FILE='domnums.txt',FORM='FORMATTED',STATUS='new') |
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| 120 | do i=1,A%nrows |
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| 121 | write(77,*) aggr%inner%num(i) |
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| 122 | enddo |
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| 123 | close(77) |
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| 124 | endif |
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| 125 | if (sctls%debug==4321) then |
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| 126 | open(77,FILE='domnums.txt',FORM='FORMATTED',STATUS='old') |
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| 127 | do i=1,A%nrows |
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| 128 | read(77,FMT=*) aggr%inner%num(i) |
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| 129 | enddo |
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| 130 | close(77) |
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| 131 | endif |
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| 132 | if (sctls%plotting==1.or.sctls%plotting==3) then |
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| 133 | allocate(tmpnum(A%nrows)) |
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| 134 | tmpnum=(/(i,i=1,A%nrows)/) |
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| 135 | call color_print_aggrs(n=A%nrows,aggrnum=tmpnum,owner=aggr%inner%num) |
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| 136 | deallocate(tmpnum) |
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| 137 | call flush(stream) |
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| 138 | endif |
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| 139 | elseif (partitioning==ONLY_METIS) then |
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| 140 | if (sctls%plotting==1.or.sctls%plotting==3) then |
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| 141 | write(stream,*)'Rough aggregates:' |
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| 142 | call color_print_aggrs(A%nrows,G%part,overwrite=.false.) |
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| 143 | endif |
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| 144 | endif |
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| 145 | call flush(stream) |
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| 146 | buf(1)=A%nrows |
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| 147 | buf(2)=A%ncols |
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| 148 | buf(3)=A%nnz |
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| 149 | buf(4)=numprocs |
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| 150 | ! Save result in Mesh object |
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| 151 | M=Mesh_newInit(nell=A%nrows,ngf=A%nrows,nsd=-2,mfrelt=-1,nnode=A%nrows) |
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| 152 | M%parted = G%parted |
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| 153 | M%nparts = G%nparts |
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| 154 | !call Mesh_allocate(M,eptnmap=.true.) |
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| 155 | allocate(M%eptnmap(A%nrows)) |
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| 156 | if (partitioning==AGGRND_METIS) then |
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| 157 | M%eptnmap(1:A%nrows) = aggr%inner%num(1:A%nrows) |
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| 158 | elseif (partitioning==ONLY_METIS) then |
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| 159 | M%eptnmap(1:A%nrows) = G%part(1:A%nrows) |
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| 160 | endif |
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| 161 | call Graph_Destroy(G) |
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| 162 | endif |
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| 163 | ! Distribute assembled matrix; first distribute essential matrix parameters and then distribute contents |
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| 164 | call MPI_BCAST(buf,4,MPI_INTEGER,D_MASTER,MPI_COMM_WORLD,ierr) |
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| 165 | if (.not.ismaster()) then |
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| 166 | A = SpMtx_newInit(nnz=buf(3),nblocks=sctls%number_of_blocks, & |
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| 167 | nrows=buf(1), & |
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| 168 | ncols=buf(2), & |
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| 169 | symmstruct=sctls%symmstruct, & |
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| 170 | symmnumeric=sctls%symmnumeric & |
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| 171 | ) |
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| 172 | allocate(b(A%nrows)) |
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| 173 | M=Mesh_newInit(nell=A%nrows,ngf=A%nrows,nsd=-2,mfrelt=-1, & |
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| 174 | nnode=A%nrows) |
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| 175 | allocate(M%eptnmap(A%nrows)) |
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| 176 | M%parted = .true. |
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| 177 | M%nparts = buf(4) |
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| 178 | endif |
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| 179 | call MPI_BCAST(M%eptnmap,A%nrows,MPI_INTEGER,D_MASTER,& |
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| 180 | MPI_COMM_WORLD,ierr) |
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| 181 | if (sctls%verbose>3.and.A%nrows<200) then |
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| 182 | write(stream,*)'A orig:' |
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| 183 | call SpMtx_printRaw(A) |
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| 184 | endif |
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| 185 | call SpMtx_distributeWithOverlap(A, b, M, ol) |
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| 186 | |
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| 187 | !========= count color elements ============ |
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| 188 | if (A%arrange_type==D_SpMtx_ARRNG_ROWS) then |
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| 189 | n=A%nrows |
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| 190 | elseif (A%arrange_type==D_SpMtx_ARRNG_COLS) then |
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| 191 | n=A%ncols |
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| 192 | else |
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| 193 | call DOUG_abort('[SpMtx_DistributeAssembled] : matrix not arranged') |
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| 194 | endif |
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| 195 | |
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| 196 | allocate(ccount(numprocs)) |
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| 197 | ccount=0 |
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| 198 | do i=1,n |
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| 199 | ccount(M%eptnmap(i))=ccount(M%eptnmap(i))+1 |
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| 200 | enddo |
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| 201 | allocate(clrstarts(numprocs+1)) |
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| 202 | clrstarts(1)=1 |
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| 203 | do i=1,numprocs |
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| 204 | clrstarts(i+1)=clrstarts(i)+ccount(i) |
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| 205 | end do |
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| 206 | allocate(clrorder(n)) |
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| 207 | ccount(1:numprocs)=clrstarts(1:numprocs) |
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| 208 | do i=1,n |
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| 209 | clrorder(ccount(M%eptnmap(i)))=i |
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| 210 | ccount(M%eptnmap(i))=ccount(M%eptnmap(i))+1 |
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| 211 | enddo |
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| 212 | if (sctls%verbose>3.and.A%nrows<200) then |
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| 213 | do i=1,numprocs ! |
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| 214 | write(stream,*)'partition ',i,' is in:', & ! |
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| 215 | clrorder(clrstarts(i):clrstarts(i+1)-1) ! |
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| 216 | enddo ! |
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| 217 | endif |
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| 218 | deallocate(ccount) |
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| 219 | |
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| 220 | !-------------------------------------------------------------------+ |
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| 221 | if (sctls%verbose>3.and.A%nrows<200) then |
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| 222 | write(stream,*)'A after arrange:' |
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| 223 | call SpMtx_printRaw(A) |
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| 224 | endif |
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| 225 | call SpMtx_build_ghost(myrank+1,ol,& |
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| 226 | A,A_ghost,M,clrorder,clrstarts) |
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| 227 | if (sctls%verbose>3.and.A%nrows<300) then |
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| 228 | write(stream,*)'A interf(1,1):' |
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| 229 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(1,1),endnz=A%mtx_bbe(1,1)) |
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| 230 | write(stream,*)'A interf(1,2):' |
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| 231 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(1,2),endnz=A%mtx_bbe(1,2)) |
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| 232 | write(stream,*)'A interf(2,1):' |
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| 233 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(2,1),endnz=A%mtx_bbe(2,1)) |
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| 234 | write(stream,*)'A inner:' |
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| 235 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(2,2),endnz=A%mtx_bbe(2,2)) |
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| 236 | if (ol>0) then |
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| 237 | write(stream,*)'A ghost:' |
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| 238 | call SpMtx_printRaw(A_ghost) |
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| 239 | endif |
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| 240 | if (A%nnz>A%mtx_bbe(2,2)) then |
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| 241 | write(stream,*)'A additional in case of ol==0:' |
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| 242 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbe(2,2)+1,endnz=A%ol0nnz) |
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| 243 | endif |
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| 244 | endif |
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| 245 | ! print neighbours |
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| 246 | if (sctls%verbose>=1) then |
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| 247 | write(stream,"(A,I0)") "N neighbours: ", M%nnghbrs |
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| 248 | do i=1,M%nnghbrs |
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| 249 | !write(stream,"(A,I0,A,I0,A,I0)") "neighbour ", i, ": ", M%nghbrs(i), ", overlap: ", M%ol_solve(i)%ninds |
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| 250 | write(stream,"(I0,A,I0,A)",advance="no") M%nghbrs(i)+1, " ", M%ol_inner(i)%ninds+M%ol_outer(i)%ninds, " " |
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| 251 | end do |
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| 252 | write(stream,*) "" |
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| 253 | end if |
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| 254 | |
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| 255 | ! Localise A: |
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| 256 | if (ol<=0) then |
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| 257 | M%ninonol=M%ntobsent |
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| 258 | M%indepoutol=M%ninner |
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| 259 | endif |
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| 260 | call SpMtx_Build_lggl(A,A_ghost,M) |
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| 261 | if (sctls%verbose>3) then |
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| 262 | write(stream,*)'tobsent:',M%lg_fmap(1:M%ntobsent) |
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| 263 | write(stream,*)'...nintol:',M%lg_fmap(M%ntobsent+1:M%ninonol) |
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| 264 | write(stream,*)'...nninner:',M%lg_fmap(M%ninonol+1:M%ninner) |
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| 265 | write(stream,*)'...indepoutol:',M%lg_fmap(M%ninner+1:M%indepoutol) |
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| 266 | write(stream,*)'...ghost-freds:',M%lg_fmap(M%indepoutol+1:M%nlf) |
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| 267 | endif |
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| 268 | ! Rebuild RHS vector to correspond to local freedoms |
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| 269 | allocate(b_tmp(M%nlf)) |
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| 270 | do i=1,M%nlf |
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| 271 | b_tmp(i)=b(M%lg_fmap(i)) |
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| 272 | end do |
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| 273 | deallocate(b) |
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| 274 | b=>b_tmp |
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| 275 | ! Localise matrices and communication arrays |
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| 276 | do k=1,M%nnghbrs |
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| 277 | M%ax_recvidx(k)%inds=M%gl_fmap(M%ax_recvidx(k)%inds) |
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| 278 | M%ax_sendidx(k)%inds=M%gl_fmap(M%ax_sendidx(k)%inds) |
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| 279 | enddo |
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| 280 | do k=1,M%nnghbrs |
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| 281 | M%ol_inner(k)%inds=M%gl_fmap(M%ol_inner(k)%inds) |
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| 282 | M%ol_outer(k)%inds=M%gl_fmap(M%ol_outer(k)%inds) |
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| 283 | M%ol_solve(k)%inds=M%gl_fmap(M%ol_solve(k)%inds) |
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| 284 | enddo |
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| 285 | do i=1,A%ol0nnz |
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| 286 | A%indi(i)=M%gl_fmap(A%indi(i)) |
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| 287 | A%indj(i)=M%gl_fmap(A%indj(i)) |
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| 288 | enddo |
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| 289 | A%nrows=max(0, maxval(A%indi(1:A%nnz))) |
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| 290 | A%ncols=max(0, maxval(A%indj)) |
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| 291 | A%arrange_type=D_SpMTX_ARRNG_NO |
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| 292 | if(associated(A%m_bound)) deallocate(A%m_bound) ! without this A_tmp got wrong size of M_bound in pcg() |
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| 293 | |
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| 294 | if (ol>0) then |
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| 295 | do i=1,A_ghost%nnz |
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| 296 | A_ghost%indi(i)=M%gl_fmap(A_ghost%indi(i)) |
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| 297 | A_ghost%indj(i)=M%gl_fmap(A_ghost%indj(i)) |
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| 298 | enddo |
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| 299 | A_ghost%nrows=max(0, maxval(A_ghost%indi)) |
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| 300 | A_ghost%ncols=max(0, maxval(A_ghost%indj)) |
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| 301 | call SpMtx_arrange(A_ghost,D_SpMtx_ARRNG_ROWS,sort=.true.) |
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| 302 | endif |
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| 303 | if (sctls%verbose>3.and.A%nrows<200) then |
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| 304 | write(stream,*)'Localised A interf(1,1):' |
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| 305 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(1,1),endnz=A%mtx_bbe(1,1)) |
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| 306 | write(stream,*)'Localised A interf(1,2):' |
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| 307 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(1,2),endnz=A%mtx_bbe(1,2)) |
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| 308 | write(stream,*)'Localised A interf(2,1):' |
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| 309 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(2,1),endnz=A%mtx_bbe(2,1)) |
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| 310 | write(stream,*)'Localised A inner:' |
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| 311 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbs(2,2),endnz=A%mtx_bbe(2,2)) |
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| 312 | if (ol>0) then |
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| 313 | write(stream,*)'Localised A ghost:' |
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| 314 | call SpMtx_printRaw(A_ghost) |
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| 315 | endif |
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| 316 | if (A%nnz>A%mtx_bbe(2,2)) then |
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| 317 | write(stream,*)'localised A additional in case of ol==0:' |
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| 318 | call SpMtx_printRaw(A=A,startnz=A%mtx_bbe(2,2)+1,endnz=A%ol0nnz) |
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| 319 | endif |
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| 320 | write(stream,*)'gl_fmap:',M%gl_fmap |
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| 321 | write(stream,*)'gl_fmap(lg_fmap):',M%gl_fmap(M%lg_fmap) |
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| 322 | write(stream,*)'lg_fmap:',M%lg_fmap |
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| 323 | !call MPI_BARRIER(MPI_COMM_WORLD,ierr) |
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| 324 | !call DOUG_abort('testing nodal graph partitioning',0) |
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| 325 | endif |
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| 326 | end subroutine SpMtx_DistributeAssembled |
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| 327 | |
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| 328 | end module Distribution_mod |
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