!!$ !!$ Parallel Sparse BLAS v2.0 !!$ (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. !!$ !!$ ! File: psb_damax.f90 ! ! Function: psb_damax ! Searches the absolute max of X. ! ! normi := max(abs(sub(X)(i)) ! ! where sub( X ) denotes X(1:N,JX:). ! ! Parameters: ! x - real,dimension(:,:). The input vector. ! desc_a - type(). The communication descriptor. ! info - integer. Eventually returns an error code. ! jx - integer(optional). The column offset. ! function psb_damax (x,desc_a, info, jx) use psb_penv_mod use psb_serial_mod use psb_descriptor_type use psb_check_mod use psb_error_mod implicit none real(kind(1.d0)), intent(in) :: x(:,:) type(psb_desc_type), intent(in) :: desc_a integer, intent(out) :: info integer, optional, intent(in) :: jx real(kind(1.d0)) :: psb_damax ! locals integer :: ictxt, np, me,& & err_act, n, iix, jjx, ix, ijx, m, i, k, imax, idamax real(kind(1.d0)) :: amax character(len=20) :: name, ch_err name='psb_damax' if(psb_get_errstatus().ne.0) return info=0 call psb_erractionsave(err_act) amax=0.d0 ictxt=psb_cd_get_context(desc_a) call psb_info(ictxt, me, np) if (np == -1) then info = 2010 call psb_errpush(info,name) goto 9999 endif ix = 1 if (present(jx)) then ijx = jx else ijx = 1 endif m = psb_cd_get_global_rows(desc_a) call psb_chkvect(m,1,size(x,1),ix,ijx,desc_a,info,iix,jjx) if(info.ne.0) then info=4010 ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (iix.ne.1) then info=3040 call psb_errpush(info,name) goto 9999 end if ! compute local max if ((psb_cd_get_local_rows(desc_a).gt.0).and.(m.ne.0)) then imax=idamax(psb_cd_get_local_rows(desc_a)-iix+1,x(iix,jjx),1) amax=abs(x(iix+imax-1,jjx)) end if ! compute global max call psb_amx(ictxt, amax) psb_damax=amax call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act.eq.psb_act_abort_) then call psb_error(ictxt) return end if return end function psb_damax !!$ !!$ Parallel Sparse BLAS v2.0 !!$ (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. !!$ !!$ ! Function: psb_damaxv ! Searches the absolute max of X. ! ! normi := max(abs(X(i)) ! ! Parameters: ! x - real,dimension(:). The input vector. ! desc_a - type(). The communication descriptor. ! info - integer. Eventually returns an error code. ! function psb_damaxv (x,desc_a, info) use psb_penv_mod use psb_serial_mod use psb_descriptor_type use psb_check_mod use psb_error_mod implicit none real(kind(1.d0)), intent(in) :: x(:) type(psb_desc_type), intent(in) :: desc_a integer, intent(out) :: info real(kind(1.d0)) :: psb_damaxv ! locals integer :: err, ictxt, np, me,& & err_act, n, iix, jjx, jx, ix, ijx, m, imax, idamax real(kind(1.d0)) :: amax character(len=20) :: name, ch_err name='psb_damaxv' if(psb_get_errstatus().ne.0) return info=0 call psb_erractionsave(err_act) amax=0.d0 ictxt=psb_cd_get_context(desc_a) call psb_info(ictxt, me, np) if (np == -1) then info = 2010 call psb_errpush(info,name) goto 9999 endif ix = 1 jx = 1 m = psb_cd_get_global_rows(desc_a) call psb_chkvect(m,1,size(x,1),ix,jx,desc_a,info,iix,jjx) if(info.ne.0) then info=4010 ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (iix.ne.1) then info=3040 call psb_errpush(info,name) goto 9999 end if ! compute local max if ((psb_cd_get_local_rows(desc_a).gt.0).and.(m.ne.0)) then imax=idamax(psb_cd_get_local_rows(desc_a)-iix+1,x(iix),1) amax=abs(x(iix+imax-1)) end if ! compute global max call psb_amx(ictxt, amax) psb_damaxv=amax call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act.eq.psb_act_abort_) then call psb_error(ictxt) return end if return end function psb_damaxv !!$ !!$ Parallel Sparse BLAS v2.0 !!$ (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. !!$ !!$ ! ! Subroutine: psb_damaxvs ! Searches the absolute max of X. ! ! normi := max(abs(sub(X)(i)) ! ! where sub( X ) denotes X(1:N,JX:). ! ! Parameters: ! res - real. The result. ! x - real,dimension(:,:). The input vector. ! desc_a - type(). The communication descriptor. ! info - integer. Eventually returns an error code. ! jx - integer(optional). The column offset. ! subroutine psb_damaxvs (res,x,desc_a, info) use psb_penv_mod use psb_serial_mod use psb_descriptor_type use psb_check_mod use psb_error_mod implicit none real(kind(1.d0)), intent(in) :: x(:) type(psb_desc_type), intent(in) :: desc_a integer, intent(out) :: info real(kind(1.D0)), intent(out) :: res ! locals integer :: ictxt, np, me,& & err_act, n, iix, jjx, ix, ijx, m, imax, idamax real(kind(1.d0)) :: amax character(len=20) :: name, ch_err name='psb_damaxvs' if(psb_get_errstatus().ne.0) return info=0 call psb_erractionsave(err_act) amax=0.d0 ictxt=psb_cd_get_context(desc_a) call psb_info(ictxt, me, np) if (np == -1) then info = 2010 call psb_errpush(info,name) goto 9999 endif ix = 1 ijx=1 m = psb_cd_get_global_rows(desc_a) call psb_chkvect(m,1,size(x,1),ix,ijx,desc_a,info,iix,jjx) if(info.ne.0) then info=4010 ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (iix.ne.1) then info=3040 call psb_errpush(info,name) goto 9999 end if ! compute local max if ((psb_cd_get_local_rows(desc_a).gt.0).and.(m.ne.0)) then imax=idamax(psb_cd_get_local_rows(desc_a)-iix+1,x(iix),1) amax=abs(x(iix+imax-1)) end if ! compute global max call psb_amx(ictxt, amax) res = amax call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act.eq.psb_act_abort_) then call psb_error(ictxt) return end if return end subroutine psb_damaxvs !!$ !!$ Parallel Sparse BLAS v2.0 !!$ (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. !!$ !!$ ! ! Subroutine: psb_dmamaxs ! Searches the absolute max of X. ! ! normi := max(abs(X(i)) ! ! Parameters: ! res - real. The result. ! x - real,dimension(:). The input vector. ! desc_a - type(). The communication descriptor. ! info - integer. Eventually returns an error code. ! subroutine psb_dmamaxs (res,x,desc_a, info,jx) use psb_penv_mod use psb_serial_mod use psb_descriptor_type use psb_check_mod use psb_error_mod implicit none real(kind(1.d0)), intent(in) :: x(:,:) type(psb_desc_type), intent(in) :: desc_a integer, intent(out) :: info integer, optional, intent(in) :: jx real(kind(1.d0)), intent(out) :: res(:) ! locals integer :: ictxt, np, me,& & err_act, n, iix, jjx, ix, ijx, m, imax, i, k, idamax real(kind(1.d0)) :: amax character(len=20) :: name, ch_err name='psb_dmamaxs' if (psb_get_errstatus().ne.0) return info=0 call psb_erractionsave(err_act) amax=0.d0 ictxt=psb_cd_get_context(desc_a) call psb_info(ictxt, me, np) if (np == -1) then info = 2010 call psb_errpush(info,name) goto 9999 endif ix = 1 if (present(jx)) then ijx = jx else ijx = 1 endif m = psb_cd_get_global_rows(desc_a) k = min(size(x,2),size(res,1)) call psb_chkvect(m,1,size(x,1),ix,ijx,desc_a,info,iix,jjx) if(info.ne.0) then info=4010 ch_err='psb_chkvect' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (iix.ne.1) then info=3040 call psb_errpush(info,name) goto 9999 end if ! compute local max if ((psb_cd_get_local_rows(desc_a).gt.0).and.(m.ne.0)) then do i=1,k imax=idamax(psb_cd_get_local_rows(desc_a)-iix+1,x(iix,jjx+i-1),1) res(i)=abs(x(iix+imax-1,jjx+i-1)) end do end if ! compute global max call psb_amx(ictxt, res(1:k)) call psb_erractionrestore(err_act) return 9999 continue call psb_erractionrestore(err_act) if (err_act.eq.psb_act_abort_) then call psb_error(ictxt) return end if return end subroutine psb_dmamaxs