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408 lines
12 KiB
Fortran
408 lines
12 KiB
Fortran
!!$
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
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!!$ Alfredo Buttari University of Rome Tor Vergata
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!!$
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!!$ Redistribution and use in source and binary forms, with or without
|
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!!$ modification, are permitted provided that the following conditions
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!!$ are met:
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!!$ 1. Redistributions of source code must retain the above copyright
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!!$ notice, this list of conditions and the following disclaimer.
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!!$ 2. Redistributions in binary form must reproduce the above copyright
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!!$ notice, this list of conditions, and the following disclaimer in the
|
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!!$ documentation and/or other materials provided with the distribution.
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!!$ 3. The name of the PSBLAS group or the names of its contributors may
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!!$ not be used to endorse or promote products derived from this
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!!$ software without specific written permission.
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!!$
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!!$ THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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!!$ ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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!!$ TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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!!$ PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PSBLAS GROUP OR ITS CONTRIBUTORS
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!!$ BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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! File: psb_dnrm2.f90
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!
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! Function: psb_dnrm2
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! Forms the norm2 of a distributed vector,
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!
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! norm2 := sqrt ( sub( X )**T * sub( X ) )
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!
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! where sub( X ) denotes X(:,JX).
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!
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! Parameters:
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! x - real,dimension(:,:). The input vector containing the entries of sub( X ).
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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! jx - integer(optional). The column offset for sub( X ).
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!
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function psb_dnrm2(x, desc_a, info, jx)
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use psb_descriptor_type
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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real(kind(1.d0)), intent(in) :: x(:,:)
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(in), optional :: jx
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integer, intent(out) :: info
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real(kind(1.D0)) :: psb_dnrm2
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! locals
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integer :: ictxt, np, me,&
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& err_act, n, iix, jjx, ndim, ix, ijx, i, m, id
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real(kind(1.d0)) :: nrm2, dnrm2, dd
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external dcombnrm2
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character(len=20) :: name, ch_err
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name='psb_dnrm2'
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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if (present(jx)) then
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ijx = jx
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else
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ijx = 1
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endif
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m = psb_cd_get_global_rows(desc_a)
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call psb_chkvect(m,1,size(x,1),ix,ijx,desc_a,info,iix,jjx)
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if(info.ne.0) then
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info=4010
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix.ne.1) then
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info=3040
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call psb_errpush(info,name)
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goto 9999
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end if
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if(m.ne.0) then
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if (psb_cd_get_local_rows(desc_a) .gt. 0) then
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ndim = psb_cd_get_local_rows(desc_a)
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nrm2 = dnrm2( ndim, x(iix,jjx), ione )
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i=1
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do while (desc_a%ovrlap_elem(i) .ne. -1)
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id = desc_a%ovrlap_elem(i+psb_n_dom_ovr_)
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dd = dble(id-1)/dble(id)
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nrm2 = nrm2 * sqrt(&
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& done - dd * ( &
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& x(desc_a%ovrlap_elem(i+psb_ovrlp_elem_), jjx) &
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& / nrm2 &
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& ) ** 2 &
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& )
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i = i+2
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end do
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else
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nrm2 = dzero
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end if
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else
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nrm2 = dzero
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end if
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call pdtreecomb(ictxt,'All',1,nrm2,-1,-1,dcombnrm2)
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psb_dnrm2 = nrm2
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error(ictxt)
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return
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end if
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return
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end function psb_dnrm2
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!!$
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!!$ Parallel Sparse BLAS v2.0
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!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
|
!!$
|
|
!!$ 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
|
|
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
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!!$ POSSIBILITY OF SUCH DAMAGE.
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!!$
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!!$
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! Function: psb_dnrm2
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! Forms the norm2 of a distributed vector,
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!
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! norm2 := sqrt ( X**T * X)
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!
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! Parameters:
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! x - real,dimension(:). The input vector containing the entries of X.
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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!
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function psb_dnrm2v(x, desc_a, info)
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use psb_descriptor_type
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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real(kind(1.d0)), intent(in) :: x(:)
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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real(kind(1.D0)) :: psb_dnrm2v
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! locals
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integer :: ictxt, np, me,&
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& err_act, n, iix, jjx, ndim, ix, jx, ijx, i, m, id
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real(kind(1.d0)) :: nrm2, dnrm2, dd
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external dcombnrm2
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character(len=20) :: name, ch_err
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name='psb_dnrm2v'
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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jx=1
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m = psb_cd_get_global_rows(desc_a)
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call psb_chkvect(m,1,size(x),ix,jx,desc_a,info,iix,jjx)
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if(info.ne.0) then
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info=4010
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix.ne.1) then
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info=3040
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call psb_errpush(info,name)
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goto 9999
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end if
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if(m.ne.0) then
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if (psb_cd_get_local_rows(desc_a) .gt. 0) then
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ndim = psb_cd_get_local_rows(desc_a)
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nrm2 = dnrm2( ndim, x, ione )
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i=1
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do while (desc_a%ovrlap_elem(i) .ne. -1)
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id = desc_a%ovrlap_elem(i+psb_n_dom_ovr_)
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dd = dble(id-1)/dble(id)
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nrm2 = nrm2 * sqrt(&
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& done - dd * ( &
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& x(desc_a%ovrlap_elem(i+psb_ovrlp_elem_)) &
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& / nrm2 &
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& ) ** 2 &
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& )
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i = i+2
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end do
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else
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nrm2 = dzero
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end if
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else
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nrm2 = dzero
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end if
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call pdtreecomb(ictxt,'All',1,nrm2,-1,-1,dcombnrm2)
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psb_dnrm2v = nrm2
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error(ictxt)
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return
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end if
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return
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end function psb_dnrm2v
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!!$
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!!$ Parallel Sparse BLAS v2.0
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|
!!$ (C) Copyright 2006 Salvatore Filippone University of Rome Tor Vergata
|
|
!!$ Alfredo Buttari University of Rome Tor Vergata
|
|
!!$
|
|
!!$ 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
|
|
!!$ CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
!!$ SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
!!$ INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
!!$ CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
!!$ ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
!!$ POSSIBILITY OF SUCH DAMAGE.
|
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!!$
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!!$
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! Subroutine: psb_dnrm2
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! Forms the norm2 of a distributed vector,
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!
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! norm2 := sqrt ( X**T * X)
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!
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! Parameters:
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! res - real. The result.
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! x - real,dimension(:). The input vector containing the entries of X.
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! desc_a - type(<psb_desc_type>). The communication descriptor.
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! info - integer. Eventually returns an error code.
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!
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subroutine psb_dnrm2vs(res, x, desc_a, info)
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use psb_descriptor_type
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use psb_check_mod
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use psb_error_mod
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use psb_penv_mod
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implicit none
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real(kind(1.d0)), intent(in) :: x(:)
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real(kind(1.d0)), intent(out) :: res
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type(psb_desc_type), intent(in) :: desc_a
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integer, intent(out) :: info
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! locals
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integer :: ictxt, np, me,&
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& err_act, n, iix, jjx, ndim, ix, jx, ijx, i, m, id
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real(kind(1.d0)) :: nrm2, dnrm2, dd
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external dcombnrm2
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character(len=20) :: name, ch_err
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name='psb_dnrm2'
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if(psb_get_errstatus().ne.0) return
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info=0
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call psb_erractionsave(err_act)
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ictxt=psb_cd_get_context(desc_a)
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call psb_info(ictxt, me, np)
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if (np == -1) then
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info = 2010
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call psb_errpush(info,name)
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goto 9999
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endif
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ix = 1
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jx = 1
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m = psb_cd_get_global_rows(desc_a)
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call psb_chkvect(m,1,size(x),ix,jx,desc_a,info,iix,jjx)
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if(info.ne.0) then
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info=4010
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ch_err='psb_chkvect'
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call psb_errpush(info,name,a_err=ch_err)
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end if
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if (iix.ne.1) then
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info=3040
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call psb_errpush(info,name)
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goto 9999
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end if
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if(m.ne.0) then
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if (psb_cd_get_local_rows(desc_a) .gt. 0) then
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ndim = psb_cd_get_local_rows(desc_a)
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nrm2 = dnrm2( ndim, x, ione )
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i=1
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do while (desc_a%ovrlap_elem(i) .ne. -1)
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id = desc_a%ovrlap_elem(i+psb_n_dom_ovr_)
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dd = dble(id-1)/dble(id)
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nrm2 = nrm2 * sqrt(&
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& done - dd * ( &
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& x(desc_a%ovrlap_elem(i+psb_ovrlp_elem_)) &
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& / nrm2 &
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& ) ** 2 &
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& )
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i = i+2
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end do
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else
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nrm2 = dzero
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end if
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else
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nrm2 = dzero
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end if
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call pdtreecomb(ictxt,'All',1,nrm2,-1,-1,dcombnrm2)
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res = nrm2
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call psb_erractionrestore(err_act)
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return
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9999 continue
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call psb_erractionrestore(err_act)
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if (err_act.eq.act_abort) then
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call psb_error(ictxt)
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return
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end if
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return
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end subroutine psb_dnrm2vs
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