| !-------------------------------------------------------------------------! |
| ! ! |
| ! N A S P A R A L L E L B E N C H M A R K S 3.3 ! |
| ! ! |
| ! S P ! |
| ! ! |
| !-------------------------------------------------------------------------! |
| ! ! |
| ! This benchmark is part of the NAS Parallel Benchmark 3.3 suite. ! |
| ! It is described in NAS Technical Reports 95-020 and 02-007 ! |
| ! ! |
| ! Permission to use, copy, distribute and modify this software ! |
| ! for any purpose with or without fee is hereby granted. We ! |
| ! request, however, that all derived work reference the NAS ! |
| ! Parallel Benchmarks 3.3. This software is provided "as is" ! |
| ! without express or implied warranty. ! |
| ! ! |
| ! Information on NPB 3.3, including the technical report, the ! |
| ! original specifications, source code, results and information ! |
| ! on how to submit new results, is available at: ! |
| ! ! |
| ! http://www.nas.nasa.gov/Software/NPB/ ! |
| ! ! |
| ! Send comments or suggestions to npb@nas.nasa.gov ! |
| ! ! |
| ! NAS Parallel Benchmarks Group ! |
| ! NASA Ames Research Center ! |
| ! Mail Stop: T27A-1 ! |
| ! Moffett Field, CA 94035-1000 ! |
| ! ! |
| ! E-mail: npb@nas.nasa.gov ! |
| ! Fax: (650) 604-3957 ! |
| ! ! |
| !-------------------------------------------------------------------------! |
| |
| |
| c--------------------------------------------------------------------- |
| c |
| c Authors: R. F. Van der Wijngaart |
| c W. Saphir |
| c--------------------------------------------------------------------- |
| |
| c--------------------------------------------------------------------- |
| program MPSP |
| c--------------------------------------------------------------------- |
| |
| include 'header.h' |
| include 'mpinpb.h' |
| |
| integer i, niter, step, c, error, fstatus |
| external timer_read |
| double precision mflops, t, tmax, timer_read |
| logical verified |
| character class |
| double precision tsum(t_last+2), t1(t_last+2), |
| > tming(t_last+2), tmaxg(t_last+2) |
| character t_recs(t_last+2)*8 |
| |
| data t_recs/'total', 'rhs', 'xsolve', 'ysolve', 'zsolve', |
| > 'bpack', 'exch', 'xcomm', 'ycomm', 'zcomm', |
| > ' totcomp', ' totcomm'/ |
| |
| call setup_mpi |
| if (.not. active) goto 999 |
| |
| c--------------------------------------------------------------------- |
| c Root node reads input file (if it exists) else takes |
| c defaults from parameters |
| c--------------------------------------------------------------------- |
| if (node .eq. root) then |
| |
| write(*, 1000) |
| |
| open (unit=2,file='timer.flag',status='old',iostat=fstatus) |
| timeron = .false. |
| if (fstatus .eq. 0) then |
| timeron = .true. |
| close(2) |
| endif |
| |
| open (unit=2,file='inputsp.data',status='old', iostat=fstatus) |
| c |
| if (fstatus .eq. 0) then |
| write(*,233) |
| 233 format(' Reading from input file inputsp.data') |
| read (2,*) niter |
| read (2,*) dt |
| read (2,*) grid_points(1), grid_points(2), grid_points(3) |
| close(2) |
| else |
| write(*,234) |
| niter = niter_default |
| dt = dt_default |
| grid_points(1) = problem_size |
| grid_points(2) = problem_size |
| grid_points(3) = problem_size |
| endif |
| 234 format(' No input file inputsp.data. Using compiled defaults') |
| |
| write(*, 1001) grid_points(1), grid_points(2), grid_points(3) |
| write(*, 1002) niter, dt |
| if (no_nodes .ne. total_nodes) write(*, 1004) total_nodes |
| if (no_nodes .ne. maxcells*maxcells) |
| > write(*, 1005) maxcells*maxcells |
| write(*, 1003) no_nodes |
| |
| 1000 format(//,' NAS Parallel Benchmarks 3.3 -- SP Benchmark',/) |
| 1001 format(' Size: ', i4, 'x', i4, 'x', i4) |
| 1002 format(' Iterations: ', i4, ' dt: ', F11.7) |
| 1004 format(' Total number of processes: ', i5) |
| 1005 format(' WARNING: compiled for ', i5, ' processes ') |
| 1003 format(' Number of active processes: ', i5, /) |
| |
| endif |
| |
| call mpi_bcast(niter, 1, MPI_INTEGER, |
| > root, comm_setup, error) |
| |
| call mpi_bcast(dt, 1, dp_type, |
| > root, comm_setup, error) |
| |
| call mpi_bcast(grid_points(1), 3, MPI_INTEGER, |
| > root, comm_setup, error) |
| |
| call mpi_bcast(timeron, 1, MPI_LOGICAL, |
| > root, comm_setup, error) |
| |
| |
| call make_set |
| |
| do c = 1, ncells |
| if ( (cell_size(1,c) .gt. IMAX) .or. |
| > (cell_size(2,c) .gt. JMAX) .or. |
| > (cell_size(3,c) .gt. KMAX) ) then |
| print *,node, c, (cell_size(i,c),i=1,3) |
| print *,' Problem size too big for compiled array sizes' |
| goto 999 |
| endif |
| end do |
| |
| do i = 1, t_last |
| call timer_clear(i) |
| end do |
| |
| call set_constants |
| |
| call initialize |
| |
| call lhsinit |
| |
| call exact_rhs |
| |
| call compute_buffer_size(5) |
| |
| c--------------------------------------------------------------------- |
| c do one time step to touch all code, and reinitialize |
| c--------------------------------------------------------------------- |
| call adi |
| call initialize |
| |
| c--------------------------------------------------------------------- |
| c Synchronize before placing time stamp |
| c--------------------------------------------------------------------- |
| do i = 1, t_last |
| call timer_clear(i) |
| end do |
| call mpi_barrier(comm_setup, error) |
| |
| call timer_clear(1) |
| call timer_start(1) |
| |
| do step = 1, niter |
| |
| if (node .eq. root) then |
| if (mod(step, 20) .eq. 0 .or. |
| > step .eq. 1) then |
| write(*, 200) step |
| 200 format(' Time step ', i4) |
| endif |
| endif |
| |
| call adi |
| |
| end do |
| |
| call timer_stop(1) |
| t = timer_read(1) |
| |
| call verify(niter, class, verified) |
| |
| call mpi_reduce(t, tmax, 1, |
| > dp_type, MPI_MAX, |
| > root, comm_setup, error) |
| |
| if( node .eq. root ) then |
| if( tmax .ne. 0. ) then |
| mflops = (881.174*float( problem_size )**3 |
| > -4683.91*float( problem_size )**2 |
| > +11484.5*float( problem_size ) |
| > -19272.4) * float( niter ) / (tmax*1000000.0d0) |
| else |
| mflops = 0.0 |
| endif |
| |
| call print_results('SP', class, grid_points(1), |
| > grid_points(2), grid_points(3), niter, maxcells*maxcells, |
| > total_nodes, tmax, mflops, ' floating point', |
| > verified, npbversion,compiletime, cs1, cs2, cs3, cs4, cs5, |
| > cs6, '(none)') |
| endif |
| |
| if (.not.timeron) goto 999 |
| |
| do i = 1, t_last |
| t1(i) = timer_read(i) |
| end do |
| t1(t_xsolve) = t1(t_xsolve) - t1(t_xcomm) |
| t1(t_ysolve) = t1(t_ysolve) - t1(t_ycomm) |
| t1(t_zsolve) = t1(t_zsolve) - t1(t_zcomm) |
| t1(t_last+2) = t1(t_xcomm)+t1(t_ycomm)+t1(t_zcomm)+t1(t_exch) |
| t1(t_last+1) = t1(t_total) - t1(t_last+2) |
| |
| call MPI_Reduce(t1, tsum, t_last+2, dp_type, MPI_SUM, |
| > 0, comm_setup, error) |
| call MPI_Reduce(t1, tming, t_last+2, dp_type, MPI_MIN, |
| > 0, comm_setup, error) |
| call MPI_Reduce(t1, tmaxg, t_last+2, dp_type, MPI_MAX, |
| > 0, comm_setup, error) |
| |
| if (node .eq. 0) then |
| write(*, 800) total_nodes |
| do i = 1, t_last+2 |
| tsum(i) = tsum(i) / total_nodes |
| write(*, 810) i, t_recs(i), tming(i), tmaxg(i), tsum(i) |
| end do |
| endif |
| 800 format(' nprocs =', i6, 11x, 'minimum', 5x, 'maximum', |
| > 5x, 'average') |
| 810 format(' timer ', i2, '(', A8, ') :', 3(2x,f10.4)) |
| |
| 999 continue |
| call mpi_barrier(MPI_COMM_WORLD, error) |
| call mpi_finalize(error) |
| |
| end |
