! ! Parallel Sparse BLAS version 3.5.1 ! (C) Copyright 2015 ! Salvatore Filippone ! Alfredo Buttari ! ! 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: vecoperation.f90 ! program vecoperation use psb_base_mod use psb_util_mod implicit none ! input parameters integer(psb_ipk_) :: idim = 100 ! miscellaneous real(psb_dpk_), parameter :: one = 1.d0 real(psb_dpk_) :: t1, t2 ! descriptor type(psb_desc_type) :: desc_a ! vector type(psb_d_vect_type) :: x,y,z,absz ! blacs parameters integer(psb_ipk_) :: ictxt, iam, np ! other variables integer(psb_ipk_) :: nr, nlr, info, i, ii, ib=1 integer(psb_lpk_) :: nt integer(psb_lpk_), allocatable :: myidx(:) real(psb_dpk_) :: zt(1), dotresult, norm2, norm1, norminf, norm2w, norm2wc character(len=20) :: name,ch_err,readinput real(psb_dpk_), allocatable :: vx(:), vy(:), vz(:) real(psb_dpk_) :: c logical :: t info=psb_success_ call psb_init(ictxt) call psb_info(ictxt,iam,np) if (iam < 0) then call psb_exit(ictxt) ! This should not happen, but just in case stop endif if(psb_get_errstatus() /= 0) goto 9999 name='vecoperation' 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 call get_command_argument(1,readinput) if (len_trim(readinput) /= 0) read(readinput,*)idim if (iam == psb_root_) write(psb_out_unit,'(" ")') if (iam == psb_root_) write(psb_out_unit,'("Vector size",I10)')idim ! ! Data distribution ! We assume a simple contiguous block distribution ! nt = (idim+np-1)/np nr = max(0,min(nt,idim-(iam*nt))) nt = nr call psb_sum(ictxt,nt) if (nt /= idim) then write(psb_err_unit,*) iam, 'Initialization error ',nr,nt,idim info = -1 call psb_barrier(ictxt) call psb_abort(ictxt) return end if call psb_cdall(ictxt,desc_a,info,nl=nr) myidx = desc_a%get_global_indices() nlr = size(myidx) ! ! allocate and fill in the vectors ! call psb_barrier(ictxt) t1 = psb_wtime() ! Allocate memory call psb_geall(x,desc_a,info) call psb_geall(y,desc_a,info) call psb_geall(z,desc_a,info) call psb_geall(absz,desc_a,info) ! Put entries into the vectors do ii=1,nlr zt(1) = 1.0_psb_dpk_ call psb_geins(ib,myidx(ii:),zt(1:),x,desc_a,info) zt(1) = 2.0_psb_dpk_ call psb_geins(ib,myidx(ii:),zt(1:),y,desc_a,info) zt(1) = -10.0_psb_dpk_ call psb_geins(ib,myidx(ii:),zt(1:),z,desc_a,info) call psb_geins(ib,myidx(ii:),zt(1:),absz,desc_a,info) end do ! Assemble call psb_cdasb(desc_a,info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='comm asb rout.' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if if (info == psb_success_) call psb_geasb(x,desc_a,info) if (info == psb_success_) call psb_geasb(y,desc_a,info) if (info == psb_success_) call psb_geasb(z,desc_a,info) if (info == psb_success_) call psb_geasb(absz,desc_a,info) if(info /= psb_success_) then info=psb_err_from_subroutine_ ch_err='vec asb rout.' call psb_errpush(info,name,a_err=ch_err) goto 9999 end if call psb_barrier(ictxt) t2 = psb_wtime() - t1 if (iam == psb_root_) write(psb_out_unit,'("Overall vector creation time : ",es12.5)')t2 if (iam == psb_root_) then vx = x%get_vect() write(psb_out_unit,'("x = ",es12.1)')vx(:) vy = y%get_vect() write(psb_out_unit,'("y = ",es12.1)')vy(:) end if ! ! Vector operations ! dotresult = psb_gedot(x,y,desc_a,info) ! Dot-product if (iam == psb_root_) write(psb_out_unit,'("Dot product result : ",es12.5)')dotresult call psb_geaxpby(1.0_psb_dpk_, x, 1.0_psb_dpk_, y, desc_a, info) ! \alpha x + \beta y if (iam == psb_root_) then write(psb_out_unit,'("axpby : x + y")') vx = x%get_vect() write(psb_out_unit,'("x = ",es12.1)')vx(:) vy = y%get_vect() write(psb_out_unit,'("y = ",es12.1)')vy(:) end if call psb_gemlt(x,y,desc_a,info) if (iam == psb_root_) then write(psb_out_unit,'("mlt : y = x*y ")') vx = x%get_vect() write(psb_out_unit,'("x = ",es12.1)')vx(:) vy = y%get_vect() write(psb_out_unit,'("y = ",es12.1)')vy(:) end if call psb_gediv(x,y,desc_a,info) if (iam == psb_root_) then write(psb_out_unit,'("div : x = x/y")') vx = x%get_vect() write(psb_out_unit,'("x = ",es12.1)')vx(:) vy = y%get_vect() write(psb_out_unit,'("y = ",es12.1)')vy(:) end if call psb_geinv(x,z,desc_a,info) if (iam == psb_root_) then write(psb_out_unit,'("inv : z = 1/x")') vx = x%get_vect() write(psb_out_unit,'("x = ",es12.1)')vx(:) vz = z%get_vect() write(psb_out_unit,'("z = ",es12.1)')vz(:) end if call psb_geaxpby(-1.0_psb_dpk_, x, 0.0_psb_dpk_, x, desc_a, info) if (iam == psb_root_) then write(psb_out_unit,'("abs : z = |x|")') vx = x%get_vect() write(psb_out_unit,'("x = ",es12.1)')vx(:) end if call psb_geabs(x,absz,desc_a,info) if (iam == psb_root_) then vz = absz%get_vect() write(psb_out_unit,'("|x| = ",es12.1)')vz(:) end if c = 1.0/5.0; call psb_gecmp(x,c,z,desc_a,info); if (iam == psb_root_) then write(psb_out_unit,'("|z(i)| >=",es12.1)')c vx = x%get_vect() write(psb_out_unit,'("x = ",es12.1)')vx(:) vz = z%get_vect() write(psb_out_unit,'("z = ",es12.1)')vz(:) end if call psb_mask(z,x,absz,t,desc_a,info) write(psb_out_unit,'("Computation of vector norms:")') norm1 = psb_norm1(x,desc_a,info) norm2 = psb_norm2(x,desc_a,info) norm2w = psb_norm2(x,absz,desc_a,info) norm2wc = psb_norm2(x,absz,z,desc_a,info) norminf = psb_normi(x,desc_a,info) if (iam == psb_root_) then write(psb_out_unit,'("\|x\|_inf : ",es12.5," \|x\|_1 :",es12.5)')norminf,norm1 write(psb_out_unit,'(" \|x\|_2 : ",es12.5," \|x\|_2,w : ",es12.5)')norm2,norm2w write(psb_out_unit,'(" masked \|x\|_2,w : ",es12.5)')norm2wc end if ! ! cleanup storage and exit ! call psb_gefree(x,desc_a,info) call psb_gefree(y,desc_a,info) call psb_gefree(z,desc_a,info) call psb_gefree(absz,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 call psb_exit(ictxt) stop 9999 call psb_error(ictxt) stop end program vecoperation