!!$
!!$ Parallel Sparse BLAS version 2.3.1
!!$ (C) Copyright 2006, 2007, 2008, 2009, 2010
!!$ Salvatore Filippone University of Rome Tor Vergata
!!$ Alfredo Buttari CNRS-IRIT, Toulouse
!!$
!!$ Redistribution and use in source and binary forms, with or without
!!$ modification, are permitted provided that the following conditions
!!$ are met:
!!$ 1. Redistributions of source code must retain the above copyright
!!$ notice, this list of conditions and the following disclaimer.
!!$ 2. Redistributions in binary form must reproduce the above copyright
!!$ notice, this list of conditions, and the following disclaimer in the
!!$ documentation and/or other materials provided with the distribution.
!!$ 3. The name of the PSBLAS group or the names of its contributors may
!!$ not be used to endorse or promote products derived from this
!!$ software without specific written permission.
!!$
!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
!!$ POSSIBILITY OF SUCH DAMAGE.
!!$
!!$
! File: ppde.f90
!
program pdgenspmv
use psb_base_mod
use psb_util_mod
implicit none
! input parameters
character(len=20) :: kmethd, ptype
character(len=5) :: afmt
integer(psb_ipk_) :: idim
! miscellaneous
real(psb_dpk_), parameter :: one = 1.d0
real(psb_dpk_) :: t1, t2, tprec, flops, tflops, tt1, tt2, bdwdth
! sparse matrix and preconditioner
type(psb_dspmat_type) :: a
! descriptor
type(psb_desc_type) :: desc_a, desc_b
! dense matrices
type(psb_d_vect_type) :: xxv,bv, vtst
real(psb_dpk_), allocatable :: tst(:)
! blacs parameters
integer(psb_ipk_) :: ictxt, iam, np
! solver parameters
integer(psb_ipk_) :: iter, itmax,itrace, istopc, irst, nr
integer(psb_long_int_k_) :: amatsize, precsize, descsize, d2size, annz, nbytes
real(psb_dpk_) :: err, eps
integer(psb_ipk_), parameter :: times=10
! other variables
integer(psb_ipk_) :: info, i
character(len=20) :: name,ch_err
character(len=40) :: fname
info=psb_success_
call psb_init(ictxt)
call psb_info(ictxt,iam,np)
if (iam < 0) then
! This should not happen, but just in case
call psb_exit(ictxt)
stop
endif
if(psb_get_errstatus() /= 0) goto 9999
name='pde90'
call psb_set_errverbosity(itwo)
!
! Hello world
!
if (iam == psb_root_) then
write(*,*) 'Welcome to PSBLAS version: ',psb_version_string_
write(*,*) 'This is the ',trim(name),' sample program'
end if
!
! get parameters
!
call get_parms(ictxt,afmt,idim)
!
! allocate and fill in the coefficient matrix, rhs and initial guess
!
call psb_barrier(ictxt)
t1 = psb_wtime()
call psb_gen_pde3d(ictxt,idim,a,bv,xxv,desc_a,afmt,&
& a1,a2,a3,b1,b2,b3,c,g,info)
call psb_barrier(ictxt)
t2 = psb_wtime() - t1
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='psb_gen_pde3d'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
if (iam == psb_root_) write(psb_out_unit,'("Overall matrix creation time : ",es12.5)')t2
if (iam == psb_root_) write(psb_out_unit,'(" ")')
call psb_cdbldext(a,desc_a,itwo,desc_b,info,extype=psb_ovt_asov_)
if (info /= 0) then
write(0,*) 'Error from bldext'
call psb_abort(ictxt)
end if
call xxv%set(done)
call psb_barrier(ictxt)
t1 = psb_wtime()
do i=1,times
call psb_spmm(done,a,xxv,dzero,bv,desc_a,info,'n')
end do
call psb_barrier(ictxt)
t2 = psb_wtime() - t1
call psb_amx(ictxt,t2)
! FIXME: cache flush needed here
call psb_barrier(ictxt)
tt1 = psb_wtime()
do i=1,times
call psb_spmm(done,a,xxv,dzero,bv,desc_a,info,'t')
end do
call psb_barrier(ictxt)
tt2 = psb_wtime() - tt1
call psb_amx(ictxt,tt2)
call psb_amx(ictxt,t2)
nr = desc_a%get_global_rows()
annz = a%get_nzeros()
amatsize = a%sizeof()
descsize = psb_sizeof(desc_a)
call psb_sum(ictxt,annz)
call psb_sum(ictxt,amatsize)
call psb_sum(ictxt,descsize)
if (iam == psb_root_) then
flops = 1.d1*2*annz
tflops=flops
write(psb_out_unit,'("Matrix: ell1 ",i0)') idim
write(psb_out_unit,'("Test on : ",i20," processors")') np
write(psb_out_unit,'("Size of matrix : ",i20," ")') nr
write(psb_out_unit,'("Number of nonzeros : ",i20," ")') annz
write(psb_out_unit,'("Memory occupation : ",i20," ")') amatsize
write(psb_out_unit,'("Number of flops (",i0," prod) : ",F20.0," ")') times,flops
flops = flops / (t2)
tflops = tflops / (tt2)
write(psb_out_unit,'("Time for ",i0," products (s) : ",F20.3)')times, t2
write(psb_out_unit,'("Time per product (ms) : ",F20.3)') t2*1.d3/(1.d0*times)
write(psb_out_unit,'("MFLOPS : ",F20.3)') flops/1.d6
write(psb_out_unit,'("Time for ",i0," products (s) (trans.): ",F20.3)') times,tt2
write(psb_out_unit,'("Time per product (ms) (trans.): ",F20.3)') tt2*1.d3/(1.d0*times)
write(psb_out_unit,'("MFLOPS (trans.): ",F20.3)') tflops/1.d6
!
! This computation is valid for CSR
!
nbytes = nr*(2*psb_sizeof_dp + psb_sizeof_int)+&
& annz*(psb_sizeof_dp + psb_sizeof_int)
bdwdth = times*nbytes/(t2*1.d6)
write(psb_out_unit,*)
write(psb_out_unit,'("MBYTES/S : ",F20.3)') bdwdth
bdwdth = times*nbytes/(tt2*1.d6)
write(psb_out_unit,'("MBYTES/S (trans): ",F20.3)') bdwdth
write(psb_out_unit,'("Storage type for DESC_A: ",a)') desc_a%indxmap%get_fmt()
write(psb_out_unit,'("Total memory occupation for DESC_A: ",i12)')descsize
write(psb_out_unit,'("Storage type for DESC_A: ",a)') desc_a%indxmap%get_fmt()
write(psb_out_unit,'("Storage type for DESC_B: ",a)') desc_b%indxmap%get_fmt()
end if
!
! cleanup storage and exit
!
call psb_gefree(bv,desc_a,info)
call psb_gefree(xxv,desc_a,info)
call psb_spfree(a,desc_a,info)
call psb_cdfree(desc_a,info)
if(info /= psb_success_) then
info=psb_err_from_subroutine_
ch_err='free routine'
call psb_errpush(info,name,a_err=ch_err)
goto 9999
end if
9999 continue
if(info /= psb_success_) then
call psb_error(ictxt)
end if
call psb_exit(ictxt)
stop
contains
!
! get iteration parameters from standard input
!
subroutine get_parms(ictxt,afmt,idim)
integer(psb_ipk_) :: ictxt
character(len=*) :: afmt
integer(psb_ipk_) :: idim
integer(psb_ipk_) :: np, iam
integer(psb_ipk_) :: intbuf(10), ip
call psb_info(ictxt, iam, np)
if (iam == 0) then
read(psb_inp_unit,*) afmt
read(psb_inp_unit,*) idim
endif
call psb_bcast(ictxt,afmt)
call psb_bcast(ictxt,idim)
if (iam == 0) then
write(psb_out_unit,'("Testing matrix : ell1")')
write(psb_out_unit,'("Grid dimensions : ",i4,"x",i4,"x",i4)')idim,idim,idim
write(psb_out_unit,'("Number of processors : ",i0)')np
write(psb_out_unit,'("Data distribution : BLOCK")')
write(psb_out_unit,'(" ")')
end if
return
end subroutine get_parms
!
! print an error message
!
subroutine pr_usage(iout)
integer(psb_ipk_) :: iout
write(iout,*)'incorrect parameter(s) found'
write(iout,*)' usage: pde90 methd prec dim &
&[istop itmax itrace]'
write(iout,*)' where:'
write(iout,*)' methd: cgstab cgs rgmres bicgstabl'
write(iout,*)' prec : bjac diag none'
write(iout,*)' dim number of points along each axis'
write(iout,*)' the size of the resulting linear '
write(iout,*)' system is dim**3'
write(iout,*)' istop stopping criterion 1, 2 '
write(iout,*)' itmax maximum number of iterations [500] '
write(iout,*)' itrace <=0 (no tracing, default) or '
write(iout,*)' >= 1 do tracing every itrace'
write(iout,*)' iterations '
end subroutine pr_usage
!
! functions parametrizing the differential equation
!
function b1(x,y,z)
use psb_base_mod, only : psb_dpk_
real(psb_dpk_) :: b1
real(psb_dpk_), intent(in) :: x,y,z
b1=1.d0/sqrt(3.d0)
end function b1
function b2(x,y,z)
use psb_base_mod, only : psb_dpk_
real(psb_dpk_) :: b2
real(psb_dpk_), intent(in) :: x,y,z
b2=1.d0/sqrt(3.d0)
end function b2
function b3(x,y,z)
use psb_base_mod, only : psb_dpk_
real(psb_dpk_) :: b3
real(psb_dpk_), intent(in) :: x,y,z
b3=1.d0/sqrt(3.d0)
end function b3
function c(x,y,z)
use psb_base_mod, only : psb_dpk_
real(psb_dpk_) :: c
real(psb_dpk_), intent(in) :: x,y,z
c=0.d0
end function c
function a1(x,y,z)
use psb_base_mod, only : psb_dpk_
real(psb_dpk_) :: a1
real(psb_dpk_), intent(in) :: x,y,z
a1=1.d0/80
end function a1
function a2(x,y,z)
use psb_base_mod, only : psb_dpk_
real(psb_dpk_) :: a2
real(psb_dpk_), intent(in) :: x,y,z
a2=1.d0/80
end function a2
function a3(x,y,z)
use psb_base_mod, only : psb_dpk_
real(psb_dpk_) :: a3
real(psb_dpk_), intent(in) :: x,y,z
a3=1.d0/80
end function a3
function g(x,y,z)
use psb_base_mod, only : psb_dpk_, done
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
end program pdgenspmv