You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
695 lines
20 KiB
Fortran
695 lines
20 KiB
Fortran
!> Test program for overlapping communication and computation with psb_spmm.
|
|
!!
|
|
!! This benchmark compares two equivalent SpMV paths:
|
|
!! 1. Serialized halo exchange + compute
|
|
!! 2. Overlapped psb_spmm(..., doswap=.true.)
|
|
!!
|
|
module psb_spmv_overlap_test
|
|
|
|
use psb_base_mod
|
|
use psb_util_mod
|
|
use psb_comm_factory_mod, only: psb_comm_set
|
|
use psb_comm_schemes_mod, only: psb_comm_isend_irecv_, psb_comm_ineighbor_alltoallv_, &
|
|
& psb_comm_persistent_ineighbor_alltoallv_
|
|
use psb_comm_neighbor_impl_mod, only: psb_comm_neighbor_handle
|
|
#ifdef PSB_HAVE_CUDA
|
|
use psb_cuda_mod
|
|
#endif
|
|
|
|
implicit none
|
|
|
|
interface
|
|
function d_func_3d(x,y,z) result(val)
|
|
import :: psb_dpk_
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
real(psb_dpk_) :: val
|
|
end function d_func_3d
|
|
end interface
|
|
|
|
contains
|
|
|
|
|
|
function d_null_func_3d(x,y,z) result(val)
|
|
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
real(psb_dpk_) :: val
|
|
|
|
val = dzero
|
|
|
|
end function d_null_func_3d
|
|
!
|
|
! functions parametrizing the differential equation
|
|
!
|
|
|
|
!
|
|
! Note: b1, b2 and b3 are the coefficients of the first
|
|
! derivative of the unknown function. The default
|
|
! we apply here is to have them zero, so that the resulting
|
|
! matrix is symmetric/hermitian and suitable for
|
|
! testing with CG and FCG.
|
|
! When testing methods for non-hermitian matrices you can
|
|
! change the B1/B2/B3 functions to e.g. done/sqrt((3*done))
|
|
!
|
|
function b1(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: b1
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
b1=dzero
|
|
end function b1
|
|
function b2(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: b2
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
b2=dzero
|
|
end function b2
|
|
function b3(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: b3
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
b3=dzero
|
|
end function b3
|
|
function c(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: c
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
c=dzero
|
|
end function c
|
|
function a1(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: a1
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
a1=done/80
|
|
end function a1
|
|
function a2(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: a2
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
a2=done/80
|
|
end function a2
|
|
function a3(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: a3
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
a3=done/80
|
|
end function a3
|
|
function g(x,y,z)
|
|
use psb_base_mod, only : psb_dpk_, done, dzero
|
|
implicit none
|
|
real(psb_dpk_) :: g
|
|
real(psb_dpk_), intent(in) :: x,y,z
|
|
g = dzero
|
|
if (x == done) then
|
|
g = done
|
|
else if (x == dzero) then
|
|
g = exp(y**2-z**2)
|
|
end if
|
|
end function g
|
|
|
|
!
|
|
! subroutine to allocate and fill in the coefficient matrix and
|
|
! the rhs.
|
|
!
|
|
subroutine psb_d_gen_pde3d(ctxt,idim,a,bv,xv,desc_a,afmt,info,&
|
|
& f,amold,vmold,imold,partition,nrl,iv,tnd)
|
|
use psb_base_mod
|
|
use psb_util_mod
|
|
!
|
|
! Discretizes the partial differential equation
|
|
!
|
|
! a1 dd(u) a2 dd(u) a3 dd(u) b1 d(u) b2 d(u) b3 d(u)
|
|
! - ------ - ------ - ------ + ----- + ------ + ------ + c u = f
|
|
! dxdx dydy dzdz dx dy dz
|
|
!
|
|
! with Dirichlet boundary conditions
|
|
! u = g
|
|
!
|
|
! on the unit cube 0<=x,y,z<=1.
|
|
!
|
|
!
|
|
! Note that if b1=b2=b3=c=0., the PDE is the Laplace equation.
|
|
!
|
|
implicit none
|
|
integer(psb_ipk_) :: idim
|
|
type(psb_dspmat_type) :: a
|
|
type(psb_d_vect_type) :: xv,bv
|
|
type(psb_desc_type) :: desc_a
|
|
type(psb_ctxt_type) :: ctxt
|
|
integer(psb_ipk_) :: info
|
|
character(len=*) :: afmt
|
|
procedure(d_func_3d), optional :: f
|
|
class(psb_d_base_sparse_mat), optional :: amold
|
|
class(psb_d_base_vect_type), optional :: vmold
|
|
class(psb_i_base_vect_type), optional :: imold
|
|
integer(psb_ipk_), optional :: partition, nrl,iv(:)
|
|
logical, optional :: tnd
|
|
! Local variables.
|
|
|
|
integer(psb_ipk_), parameter :: nb=20
|
|
type(psb_d_csc_sparse_mat) :: acsc
|
|
type(psb_d_coo_sparse_mat) :: acoo
|
|
type(psb_d_csr_sparse_mat) :: acsr
|
|
real(psb_dpk_) :: zt(nb),x,y,z
|
|
integer(psb_ipk_) :: nnz,nr,nlr,i,j,ii,ib,k, partition_
|
|
integer(psb_lpk_) :: m,n,glob_row,nt
|
|
integer(psb_ipk_) :: ix,iy,iz,ia,indx_owner
|
|
! For 3D partition
|
|
! Note: integer control variables going directly into an MPI call
|
|
! must be 4 bytes, i.e. psb_mpk_
|
|
integer(psb_mpk_) :: npdims(3), npp, minfo
|
|
integer(psb_ipk_) :: npx,npy,npz, iamx,iamy,iamz,mynx,myny,mynz
|
|
integer(psb_ipk_), allocatable :: bndx(:),bndy(:),bndz(:)
|
|
! Process grid
|
|
integer(psb_ipk_) :: np, iam, nth
|
|
integer(psb_ipk_) :: icoeff
|
|
integer(psb_lpk_), allocatable :: irow(:),icol(:),myidx(:)
|
|
real(psb_dpk_), allocatable :: val(:)
|
|
! deltah dimension of each grid cell
|
|
! deltat discretization time
|
|
real(psb_dpk_) :: deltah, sqdeltah, deltah2
|
|
real(psb_dpk_), parameter :: rhs=dzero,one=done,zero=dzero
|
|
real(psb_dpk_) :: t0, t1, t2, t3, tasb, talc, ttot, tgen, tcdasb
|
|
integer(psb_ipk_) :: err_act
|
|
procedure(d_func_3d), pointer :: f_
|
|
logical :: tnd_
|
|
character(len=20) :: name, ch_err,tmpfmt
|
|
|
|
info = psb_success_
|
|
name = 'create_matrix'
|
|
call psb_erractionsave(err_act)
|
|
|
|
call psb_info(ctxt, iam, np)
|
|
|
|
|
|
if (present(f)) then
|
|
f_ => f
|
|
else
|
|
f_ => d_null_func_3d
|
|
end if
|
|
|
|
deltah = done/(idim+1)
|
|
sqdeltah = deltah*deltah
|
|
deltah2 = (2*done)* deltah
|
|
|
|
if (present(partition)) then
|
|
if ((1<= partition).and.(partition <= 3)) then
|
|
partition_ = partition
|
|
else
|
|
write(*,*) 'Invalid partition choice ',partition,' defaulting to 3'
|
|
partition_ = 3
|
|
end if
|
|
else
|
|
partition_ = 3
|
|
end if
|
|
|
|
tnd_ = .false.
|
|
if (present(tnd)) tnd_ = tnd
|
|
|
|
! initialize array descriptor and sparse matrix storage. provide an
|
|
! estimate of the number of non zeroes
|
|
|
|
m = (1_psb_lpk_*idim)*idim*idim
|
|
n = m
|
|
nnz = ((n*7)/(np))
|
|
if(iam == psb_root_) write(psb_out_unit,'("Generating Matrix (size=",i0,")...")')n
|
|
t0 = psb_wtime()
|
|
select case(partition_)
|
|
case(1)
|
|
! A BLOCK partition
|
|
if (present(nrl)) then
|
|
nr = nrl
|
|
else
|
|
!
|
|
! Using a simple BLOCK distribution.
|
|
!
|
|
nt = (m+np-1)/np
|
|
nr = max(0,min(nt,m-(iam*nt)))
|
|
end if
|
|
|
|
nt = nr
|
|
call psb_sum(ctxt,nt)
|
|
if (nt /= m) then
|
|
write(psb_err_unit,*) iam, 'Initialization error ',nr,nt,m
|
|
info = -1
|
|
call psb_barrier(ctxt)
|
|
call psb_abort(ctxt)
|
|
return
|
|
end if
|
|
|
|
!
|
|
! First example of use of CDALL: specify for each process a number of
|
|
! contiguous rows
|
|
!
|
|
call psb_cdall(ctxt,desc_a,info,nl=nr)
|
|
myidx = desc_a%get_global_indices()
|
|
nlr = size(myidx)
|
|
|
|
case(2)
|
|
! A partition defined by the user through IV
|
|
|
|
if (present(iv)) then
|
|
if (size(iv) /= m) then
|
|
write(psb_err_unit,*) iam, 'Initialization error: wrong IV size',size(iv),m
|
|
info = -1
|
|
call psb_barrier(ctxt)
|
|
call psb_abort(ctxt)
|
|
return
|
|
end if
|
|
else
|
|
write(psb_err_unit,*) iam, 'Initialization error: IV not present'
|
|
info = -1
|
|
call psb_barrier(ctxt)
|
|
call psb_abort(ctxt)
|
|
return
|
|
end if
|
|
|
|
!
|
|
! Second example of use of CDALL: specify for each row the
|
|
! process that owns it
|
|
!
|
|
call psb_cdall(ctxt,desc_a,info,vg=iv)
|
|
myidx = desc_a%get_global_indices()
|
|
nlr = size(myidx)
|
|
|
|
case(3)
|
|
! A 3-dimensional partition
|
|
|
|
! A nifty MPI function will split the process list
|
|
npdims = 0
|
|
call mpi_dims_create(np,3,npdims,info)
|
|
npx = npdims(1)
|
|
npy = npdims(2)
|
|
npz = npdims(3)
|
|
|
|
allocate(bndx(0:npx),bndy(0:npy),bndz(0:npz))
|
|
! We can reuse idx2ijk for process indices as well.
|
|
call idx2ijk(iamx,iamy,iamz,iam,npx,npy,npz,base=0)
|
|
! Now let's split the 3D cube in hexahedra
|
|
call dist1Didx(bndx,idim,npx)
|
|
mynx = bndx(iamx+1)-bndx(iamx)
|
|
call dist1Didx(bndy,idim,npy)
|
|
myny = bndy(iamy+1)-bndy(iamy)
|
|
call dist1Didx(bndz,idim,npz)
|
|
mynz = bndz(iamz+1)-bndz(iamz)
|
|
|
|
! How many indices do I own?
|
|
nlr = mynx*myny*mynz
|
|
allocate(myidx(nlr))
|
|
! Now, let's generate the list of indices I own
|
|
nr = 0
|
|
do i=bndx(iamx),bndx(iamx+1)-1
|
|
do j=bndy(iamy),bndy(iamy+1)-1
|
|
do k=bndz(iamz),bndz(iamz+1)-1
|
|
nr = nr + 1
|
|
call ijk2idx(myidx(nr),i,j,k,idim,idim,idim)
|
|
end do
|
|
end do
|
|
end do
|
|
if (nr /= nlr) then
|
|
write(psb_err_unit,*) iam,iamx,iamy,iamz, 'Initialization error: NR vs NLR ',&
|
|
& nr,nlr,mynx,myny,mynz
|
|
info = -1
|
|
call psb_barrier(ctxt)
|
|
call psb_abort(ctxt)
|
|
end if
|
|
|
|
!
|
|
! Third example of use of CDALL: specify for each process
|
|
! the set of global indices it owns.
|
|
!
|
|
call psb_cdall(ctxt,desc_a,info,vl=myidx)
|
|
|
|
case default
|
|
write(psb_err_unit,*) iam, 'Initialization error: should not get here'
|
|
info = -1
|
|
call psb_barrier(ctxt)
|
|
call psb_abort(ctxt)
|
|
return
|
|
end select
|
|
|
|
|
|
if (info == psb_success_) call psb_spall(a,desc_a,info,nnz=nnz)
|
|
! define rhs from boundary conditions; also build initial guess
|
|
if (info == psb_success_) call psb_geall(xv,desc_a,info)
|
|
if (info == psb_success_) call psb_geall(bv,desc_a,info)
|
|
|
|
call psb_barrier(ctxt)
|
|
talc = psb_wtime()-t0
|
|
|
|
if (info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='allocation rout.'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
! we build an auxiliary matrix consisting of one row at a
|
|
! time; just a small matrix. might be extended to generate
|
|
! a bunch of rows per call.
|
|
!
|
|
allocate(val(20*nb),irow(20*nb),&
|
|
&icol(20*nb),stat=info)
|
|
if (info /= psb_success_ ) then
|
|
info=psb_err_alloc_dealloc_
|
|
call psb_errpush(info,name)
|
|
goto 9999
|
|
endif
|
|
|
|
|
|
! loop over rows belonging to current process in a block
|
|
! distribution.
|
|
|
|
call psb_barrier(ctxt)
|
|
t1 = psb_wtime()
|
|
do ii=1, nlr,nb
|
|
ib = min(nb,nlr-ii+1)
|
|
icoeff = 1
|
|
do k=1,ib
|
|
i=ii+k-1
|
|
! local matrix pointer
|
|
glob_row=myidx(i)
|
|
! compute gridpoint coordinates
|
|
call idx2ijk(ix,iy,iz,glob_row,idim,idim,idim)
|
|
! x, y, z coordinates
|
|
x = (ix-1)*deltah
|
|
y = (iy-1)*deltah
|
|
z = (iz-1)*deltah
|
|
zt(k) = f_(x,y,z)
|
|
! internal point: build discretization
|
|
!
|
|
! term depending on (x-1,y,z)
|
|
!
|
|
val(icoeff) = -a1(x,y,z)/sqdeltah-b1(x,y,z)/deltah2
|
|
if (ix == 1) then
|
|
zt(k) = g(dzero,y,z)*(-val(icoeff)) + zt(k)
|
|
else
|
|
call ijk2idx(icol(icoeff),ix-1,iy,iz,idim,idim,idim)
|
|
irow(icoeff) = glob_row
|
|
icoeff = icoeff+1
|
|
endif
|
|
! term depending on (x,y-1,z)
|
|
val(icoeff) = -a2(x,y,z)/sqdeltah-b2(x,y,z)/deltah2
|
|
if (iy == 1) then
|
|
zt(k) = g(x,dzero,z)*(-val(icoeff)) + zt(k)
|
|
else
|
|
call ijk2idx(icol(icoeff),ix,iy-1,iz,idim,idim,idim)
|
|
irow(icoeff) = glob_row
|
|
icoeff = icoeff+1
|
|
endif
|
|
! term depending on (x,y,z-1)
|
|
val(icoeff)=-a3(x,y,z)/sqdeltah-b3(x,y,z)/deltah2
|
|
if (iz == 1) then
|
|
zt(k) = g(x,y,dzero)*(-val(icoeff)) + zt(k)
|
|
else
|
|
call ijk2idx(icol(icoeff),ix,iy,iz-1,idim,idim,idim)
|
|
irow(icoeff) = glob_row
|
|
icoeff = icoeff+1
|
|
endif
|
|
|
|
! term depending on (x,y,z)
|
|
val(icoeff)=(2*done)*(a1(x,y,z)+a2(x,y,z)+a3(x,y,z))/sqdeltah &
|
|
& + c(x,y,z)
|
|
call ijk2idx(icol(icoeff),ix,iy,iz,idim,idim,idim)
|
|
irow(icoeff) = glob_row
|
|
icoeff = icoeff+1
|
|
! term depending on (x,y,z+1)
|
|
val(icoeff)=-a3(x,y,z)/sqdeltah+b3(x,y,z)/deltah2
|
|
if (iz == idim) then
|
|
zt(k) = g(x,y,done)*(-val(icoeff)) + zt(k)
|
|
else
|
|
call ijk2idx(icol(icoeff),ix,iy,iz+1,idim,idim,idim)
|
|
irow(icoeff) = glob_row
|
|
icoeff = icoeff+1
|
|
endif
|
|
! term depending on (x,y+1,z)
|
|
val(icoeff)=-a2(x,y,z)/sqdeltah+b2(x,y,z)/deltah2
|
|
if (iy == idim) then
|
|
zt(k) = g(x,done,z)*(-val(icoeff)) + zt(k)
|
|
else
|
|
call ijk2idx(icol(icoeff),ix,iy+1,iz,idim,idim,idim)
|
|
irow(icoeff) = glob_row
|
|
icoeff = icoeff+1
|
|
endif
|
|
! term depending on (x+1,y,z)
|
|
val(icoeff)=-a1(x,y,z)/sqdeltah+b1(x,y,z)/deltah2
|
|
if (ix==idim) then
|
|
zt(k) = g(done,y,z)*(-val(icoeff)) + zt(k)
|
|
else
|
|
call ijk2idx(icol(icoeff),ix+1,iy,iz,idim,idim,idim)
|
|
irow(icoeff) = glob_row
|
|
icoeff = icoeff+1
|
|
endif
|
|
|
|
end do
|
|
call psb_spins(icoeff-1,irow,icol,val,a,desc_a,info)
|
|
if(info /= psb_success_) exit
|
|
call psb_geins(ib,myidx(ii:ii+ib-1),zt(1:ib),bv,desc_a,info)
|
|
if(info /= psb_success_) exit
|
|
zt(:)=dzero
|
|
call psb_geins(ib,myidx(ii:ii+ib-1),zt(1:ib),xv,desc_a,info)
|
|
if(info /= psb_success_) exit
|
|
end do
|
|
|
|
tgen = psb_wtime()-t1
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='insert rout.'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
|
|
deallocate(val,irow,icol)
|
|
|
|
call psb_barrier(ctxt)
|
|
t1 = psb_wtime()
|
|
if (present(imold)) then
|
|
call psb_cdasb(desc_a,info,mold=imold)
|
|
else
|
|
call psb_cdasb(desc_a,info)
|
|
end if
|
|
tcdasb = psb_wtime()-t1
|
|
call psb_barrier(ctxt)
|
|
t1 = psb_wtime()
|
|
if (info == psb_success_) then
|
|
if (present(amold)) then
|
|
call psb_spasb(a,desc_a,info,mold=amold)
|
|
else
|
|
call psb_spasb(a,desc_a,info,afmt=afmt)
|
|
end if
|
|
end if
|
|
call psb_barrier(ctxt)
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='asb rout.'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
if (info == psb_success_) then
|
|
if (present(vmold)) then
|
|
call psb_geasb(xv,desc_a,info,mold=vmold)
|
|
if (info == psb_success_) call psb_geasb(bv,desc_a,info,mold=vmold)
|
|
else
|
|
call psb_geasb(xv,desc_a,info)
|
|
if (info == psb_success_) call psb_geasb(bv,desc_a,info)
|
|
end if
|
|
end if
|
|
if(info /= psb_success_) then
|
|
info=psb_err_from_subroutine_
|
|
ch_err='asb rout.'
|
|
call psb_errpush(info,name,a_err=ch_err)
|
|
goto 9999
|
|
end if
|
|
tasb = psb_wtime()-t1
|
|
call psb_barrier(ctxt)
|
|
ttot = psb_wtime() - t0
|
|
|
|
call psb_amx(ctxt,talc)
|
|
call psb_amx(ctxt,tgen)
|
|
call psb_amx(ctxt,tasb)
|
|
call psb_amx(ctxt,ttot)
|
|
if(iam == psb_root_) then
|
|
tmpfmt = a%get_fmt()
|
|
write(psb_out_unit,'("The matrix has been generated and assembled in ",a3," format.")')&
|
|
& tmpfmt
|
|
write(psb_out_unit,'("-allocation time : ",es12.5)') talc
|
|
write(psb_out_unit,'("-coeff. gen. time : ",es12.5)') tgen
|
|
write(psb_out_unit,'("-desc asbly time : ",es12.5)') tcdasb
|
|
write(psb_out_unit,'("- mat asbly time : ",es12.5)') tasb
|
|
write(psb_out_unit,'("-total time : ",es12.5)') ttot
|
|
|
|
end if
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error_handler(ctxt,err_act)
|
|
|
|
return
|
|
end subroutine psb_d_gen_pde3d
|
|
|
|
subroutine run_spmv_kernel(ctxt,use_gpu)
|
|
use psb_base_mod
|
|
#ifdef PSB_HAVE_CUDA
|
|
use psb_cuda_mod
|
|
#endif
|
|
implicit none
|
|
|
|
type(psb_ctxt_type), intent(in) :: ctxt
|
|
logical, intent(in) :: use_gpu
|
|
|
|
type(psb_dspmat_type) :: a
|
|
type(psb_d_vect_type) :: x, y
|
|
type(psb_desc_type) :: desc_a
|
|
character(len=5) :: afmt
|
|
character(len=64) :: env_buf
|
|
integer(psb_ipk_) :: my_rank, np, info, err_act
|
|
integer(psb_ipk_) :: idim, times, i, n_global
|
|
integer :: env_len, env_status, ios
|
|
real(psb_dpk_) :: alpha, beta, t0, t1, dt, avg_t
|
|
|
|
#ifdef PSB_HAVE_CUDA
|
|
type(psb_d_vect_cuda) :: vmold
|
|
type(psb_i_vect_cuda) :: imold
|
|
type(psb_d_cuda_hlg_sparse_mat), target :: ahlg
|
|
class(psb_d_base_sparse_mat), pointer :: agmold
|
|
#endif
|
|
|
|
info = psb_success_
|
|
afmt = 'CSR'
|
|
idim = 10
|
|
times = 100
|
|
alpha = done
|
|
beta = dzero
|
|
|
|
call psb_erractionsave(err_act)
|
|
call psb_info(ctxt, my_rank, np)
|
|
|
|
call get_environment_variable('IDIM', env_buf, length=env_len, status=env_status)
|
|
if ((env_status == 0) .and. (env_len > 0)) then
|
|
read(env_buf(1:env_len), *, iostat=ios) idim
|
|
if ((ios /= 0) .or. (idim < 2)) idim = 10
|
|
end if
|
|
call get_environment_variable('TIMES', env_buf, length=env_len, status=env_status)
|
|
if ((env_status == 0) .and. (env_len > 0)) then
|
|
read(env_buf(1:env_len), *, iostat=ios) times
|
|
if ((ios /= 0) .or. (times < 1)) times = 100
|
|
end if
|
|
|
|
n_global = idim * idim * idim
|
|
|
|
call psb_barrier(ctxt)
|
|
call psb_d_gen_pde3d(ctxt,idim,a,y,x,desc_a,afmt,info)
|
|
if (info /= psb_success_) goto 9999
|
|
|
|
#ifdef PSB_HAVE_CUDA
|
|
if (use_gpu) then
|
|
agmold => ahlg
|
|
call a%cscnv(info,mold=agmold)
|
|
if (info /= psb_success_) goto 9999
|
|
call desc_a%cnv(mold=imold)
|
|
if (info /= psb_success_) goto 9999
|
|
call psb_geasb(x,desc_a,info,mold=vmold)
|
|
if (info /= psb_success_) goto 9999
|
|
call psb_geasb(y,desc_a,info,mold=vmold)
|
|
if (info /= psb_success_) goto 9999
|
|
end if
|
|
#endif
|
|
|
|
! warm-up
|
|
call psb_spmm(alpha, a, x, beta, y, desc_a, info, doswap=.false.)
|
|
if (info /= psb_success_) goto 9999
|
|
|
|
call psb_barrier(ctxt)
|
|
t0 = psb_wtime()
|
|
do i = 1, times
|
|
call psb_spmm(alpha, a, x, beta, y, desc_a, info, doswap=.false.)
|
|
if (info /= psb_success_) exit
|
|
end do
|
|
t1 = psb_wtime()
|
|
if (info /= psb_success_) goto 9999
|
|
|
|
dt = t1 - t0
|
|
call psb_amx(ctxt, dt)
|
|
avg_t = dt / real(times, psb_dpk_)
|
|
|
|
if (my_rank == psb_root_) then
|
|
write(psb_out_unit,'(/,"SpMV benchmark (no overlap)")')
|
|
write(psb_out_unit,'(" idim : ",i0)') idim
|
|
write(psb_out_unit,'(" global unknowns : ",i0)') n_global
|
|
write(psb_out_unit,'(" repetitions : ",i0)') times
|
|
write(psb_out_unit,'(" total time [s] : ",es12.5)') dt
|
|
write(psb_out_unit,'(" avg time [s] : ",es12.5)') avg_t
|
|
end if
|
|
|
|
call psb_gefree(y, desc_a, info)
|
|
call psb_gefree(x, desc_a, info)
|
|
call psb_spfree(a, desc_a, info)
|
|
call psb_cdfree(desc_a, info)
|
|
call psb_erractionrestore(err_act)
|
|
return
|
|
|
|
9999 call psb_error(ctxt)
|
|
call psb_error_handler(ctxt, err_act)
|
|
end subroutine run_spmv_kernel
|
|
|
|
end module psb_spmv_overlap_test
|
|
|
|
program psb_spmv_kernel
|
|
use psb_spmv_overlap_test
|
|
use psb_base_mod
|
|
#ifdef PSB_HAVE_CUDA
|
|
use psb_cuda_mod
|
|
#endif
|
|
implicit none
|
|
|
|
type(psb_ctxt_type) :: ctxt
|
|
logical :: use_gpu
|
|
integer(psb_ipk_) :: my_rank, np, k
|
|
character(len=256) :: arg
|
|
|
|
call psb_init(ctxt)
|
|
call psb_info(ctxt, my_rank, np)
|
|
|
|
#ifdef PSB_HAVE_CUDA
|
|
use_gpu = .true.
|
|
#else
|
|
use_gpu = .false.
|
|
#endif
|
|
|
|
do k = 1, command_argument_count()
|
|
call get_command_argument(k, arg)
|
|
if (index(psb_toupper(trim(arg)), '--GPU=') == 1) then
|
|
select case (psb_toupper(adjustl(arg(7:len_trim(arg)))))
|
|
case ('TRUE','T','1','YES','Y','ON')
|
|
use_gpu = .true.
|
|
case ('FALSE','F','0','NO','N','OFF')
|
|
use_gpu = .false.
|
|
end select
|
|
end if
|
|
end do
|
|
|
|
#ifdef PSB_HAVE_CUDA
|
|
if (use_gpu) call psb_cuda_init(ctxt)
|
|
#else
|
|
use_gpu = .false.
|
|
#endif
|
|
|
|
if (my_rank == psb_root_) then
|
|
write(psb_out_unit,*) 'Welcome to PSBLAS version: ', psb_version_string_
|
|
write(psb_out_unit,*) 'This is the psb_spmv_kernel sample program'
|
|
write(psb_out_unit,'("GPU enabled : ",l1)') use_gpu
|
|
end if
|
|
|
|
call run_spmv_kernel(ctxt,use_gpu)
|
|
|
|
#ifdef PSB_HAVE_CUDA
|
|
if (use_gpu) call psb_cuda_exit()
|
|
#endif
|
|
call psb_exit(ctxt)
|
|
end program psb_spmv_kernel
|