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|
#if HAVE_CONFIG_H
# include "config.fh"
#endif
c vector boxes lack arithmetic precision
# define THRESH 1d-13
# define THRESHF 1e-5
#define MISMATCH(x,y) abs(x-y)/max(1d0,abs(x)).gt.THRESH
#define MISMATCHF(x,y) abs(x-y)/max(1.0,abs(x)).gt.THRESHF
program main
implicit none
#include "mafdecls.fh"
#include "global.fh"
#include "testutil.fh"
integer heap, stack, fudge, ma_heap, me
integer nmax, DIM, nwidth, MAXPROC, nloop
parameter (nmax = 4, DIM = 2, nwidth = 2, MAXPROC = 2000)
parameter (nloop = 1)
integer ndim, nproc, pdims(7), type, dcnt, g_a, maxval
integer i, j, k, dims(7), width(7), map(MAXPROC+1)
integer lo(7), hi(7), ld(7)
integer lo2(7), hi2(7), ld2(7)
integer dims3(7), ld3(7), chunk(7)
integer a(nmax, nmax), b(nmax+2*nwidth,nmax+2*nwidth)
double precision start,finish,start1,finish1,t1,t2,t3,t4,t5,tmp
double precision t6,t7
logical status, safe_put, safe_get, has_data(0:MAXPROC-1)
parameter (heap=60*60*4, fudge=100, stack=100*100)
GA_ACCESS_INDEX_TYPE index3
c
c*** Intitialize a message passing library
c
#include "mp3.fh"
c
c*** Initialize GA
c
c There are 2 choices: ga_initialize or ga_initialize_ltd.
c In the first case, there is no explicit limit on memory usage.
c In the second, user can set limit (per processor) in bytes.
c
print*
call ga_initialize()
nproc = ga_nnodes()
me = ga_nodeid()
c we can also use GA_set_memory_limit BEFORE first ga_create call
c
ma_heap = heap + fudge
call GA_set_memory_limit(util_mdtob(ma_heap))
c
if(ga_nodeid().eq.0)then
print *,' GA initialized '
call ffflush(6)
endif
c
c*** Initialize the MA package
c MA must be initialized before any global array is allocated
c
status = ma_init(MT_DCPL, stack, ma_heap)
if (.not. status) call ga_error('ma_init failed',-1)
c
if(me.eq.0)then
print *, 'using ', nproc, ' process(es)'
call ffflush(6)
endif
c
c Test ghost distributions
c
ndim = DIM
c
c Create irregular distribution on all nodes
c
call factor(nproc,ndim,pdims)
dims(1) = pdims(1) * nmax
dims(2) = pdims(2) * nmax
maxval = 1
do i = 1, ndim
maxval = dims(i)*maxval
end do
maxval = maxval - 1
c
dcnt = 1
do i = 1, pdims(1)
map(dcnt) = (i-1)*nmax + 1
dcnt = dcnt + 1
end do
do i = 1, pdims(2)
map(dcnt) = (i-1)*nmax + 1
dcnt = dcnt + 1
end do
c
do i = 1, ndim
width(i) = nwidth
chunk(i) = 1
if (pdims(i).gt.dims(i)) pdims(i) = dims(i)
if (me.eq.0) then
write(6,*) 'Value of pdims(',i,') is ',pdims(i)
endif
call ffflush(6)
ld(i) = nmax
end do
if (me.eq.0) then
do i = 1, dcnt - 1
write(6,'("map(",i2,") = ",i5)') i,map(i)
call ffflush(6)
end do
endif
type = MT_INT
status = nga_create_ghosts_irreg (type, ndim, dims, width,
+ "test_array", map, pdims, g_a)
if (status.and.me.eq.0) then
write(6,*) '*'
write(6,*) '* Global array creation was successful'
write(6,*) '*'
elseif (.not.status) then
write(6,*) 'Global array creation failure on ',me
endif
c
c Find processors that have data
c
call ga_sync
do i = 0, nproc-1
call nga_distribution(g_a, i, lo, hi)
has_data(i) = .true.
do j = 1, ndim
if (lo(j).eq.0.and.hi(j).eq.-1) has_data(i) = .false.
end do
if (me.eq.i) then
write(6,*) '*'
write(6,*) '* Distribution on processor ',i
write(6,*) '*'
write(6,110) lo(1), hi(1)
write(6,110) lo(2), hi(2)
110 format(2i10)
endif
call ffflush(6)
call ga_sync
end do
c
c initialize g_a
c
call ga_sync
call nga_distribution(g_a, me, lo, hi)
do i = 1, hi(1) - lo(1) + 1
do j = 1, hi(2) - lo(2) + 1
a(i,j) = (i + lo(1) - 2)*dims(1) + (j + lo(2) - 2) + 1
end do
end do
safe_put = .true.
do i = 1, ndim
if (hi(i).lt.lo(i)) safe_put = .false.
end do
if (has_data(me).and.safe_put) call nga_put(g_a, lo, hi, a, ld)
c
c print out values of a
c
do k = 0, nproc-1
call ga_sync
if (k.eq.me.and.has_data(me).and.maxval.lt.10000) then
write(6,*)
write(6,*) 'Initial data on processor ',k
write(6,*)
do i = 1, min(hi(1)-lo(1)+1,10)
write (6,101) (a(i,j),j=1,min(hi(2)-lo(2)+1,10))
end do
call ffflush(6)
endif
end do
101 format(10x,10i5)
call ffflush(6)
c go to 122
t1 = 0.0d00
do i = 1, nloop
start = util_timer()
status = nga_update_ghost_dir(g_a,1,1,.true.)
status = nga_update_ghost_dir(g_a,1,-1,.true.)
status = nga_update_ghost_dir(g_a,2,1,.true.)
status = nga_update_ghost_dir(g_a,2,-1,.true.)
finish = util_timer()
t1 = t1 + finish - start
end do
t1 = t1/dble(nloop)
if (me.eq.0) then
write(6,*) '*'
write(6,*) '* Completed update successfully'
write(6,*) '*'
call ffflush(6)
endif
c
c get patch with ghost cells
c
do i = 1, ndim
lo2(i) = lo(i) - width(i)
hi2(i) = hi(i) + width(i)
ld2(i) = ld(i) + 2*width(i)
end do
call ga_sync
call ffflush(6)
do i = 0, nproc-1
if (i.eq.me) then
write(6,*) '*'
write(6,*) 'ghost patch dimensions on processor ',i
write(6,*) '*'
do j = 1, ndim
write(6,*) 'lo(',j,') = ',lo2(j)
write(6,*) 'hi(',j,') = ',hi2(j)
write(6,*) 'ld(',j,') = ',ld2(j)
end do
write(6,*) '*'
endif
call ga_sync
call ffflush(6)
end do
safe_get = .true.
t2 = 0.0d00
t3 = 0.0d00
do i = 1, nloop
start = util_timer()
call ga_sync
start1 = util_timer()
if (has_data(me).and.safe_get)
+ call nga_periodic_get(g_a, lo2, hi2, b, ld2)
finish1 = util_timer()
call ga_sync
finish = util_timer()
t2 = t2 + finish1 - start1
t3 = t3 + finish - start
end do
t2 = t2/dble(nloop)
t3 = t3/dble(nloop)
if (me.eq.0.and.maxval.lt.10000) then
write(6,*) '*'
write(6,*) '* Write out contents of local patch using'
write(6,*) '* nga_periodic_get'
write(6,*) '*'
call ffflush(6)
endif
do k = 0, nproc-1
call ga_sync
if (me.eq.k.and.has_data(me).and.maxval.lt.10000) then
write(6,*) '*'
write(6,*) '* Data on processor ',k
write(6,*) '*'
do i = 1, min(hi2(1)-lo2(1)+1,12)
write (6,102) (b(i,j),j=1,min(hi2(2)-lo2(2)+1,12))
end do
call ffflush(6)
endif
end do
102 format(14i5)
if (me.eq.0) then
write(6,*) '*'
write(6,*) '* Performing nga_access_ghosts'
write(6,*) '*'
call ffflush(6)
endif
if (has_data(me)) call nga_access_ghosts(g_a, dims3,
+ index3, ld3)
call ga_sync
if (maxval.lt.10000)
+ call aprint(int_mb(index3),dims3(1),dims3(2),
+ ld3(1),has_data)
call atest(int_mb(index3),dims3(1),dims3(2),ld3(1),b,
+ nmax+2*nwidth,has_data)
call ga_sync
tmp = t1
call ga_dgop(1,tmp,1,'max')
if (me.eq.0) then
write(6,*) 'Maximum time for nga_update_ghosts ',tmp
endif
tmp = t1
call ga_dgop(2,tmp,1,'min')
if (me.eq.0) then
write(6,*) 'Minimum time for nga_update_ghosts ',tmp
endif
tmp = t1
call ga_dgop(3,tmp,1,'+')
if (me.eq.0) then
write(6,*) 'Average time for nga_update_ghosts ',tmp/dble(nproc)
endif
tmp = t2
call ga_dgop(4,tmp,1,'max')
if (me.eq.0) then
write(6,*) 'Maximum time for nga_periodic_get ',tmp
endif
tmp = t2
call ga_dgop(5,tmp,1,'min')
if (me.eq.0) then
write(6,*) 'Minimum time for nga_periodic_get ',tmp
endif
tmp = t2
call ga_dgop(6,tmp,1,'+')
if (me.eq.0) then
write(6,*) 'Average time for nga_periodic_get ',tmp/dble(nproc)
endif
tmp = t3
call ga_dgop(4,tmp,1,'max')
if (me.eq.0) then
write(6,*) 'Maximum time for (sync)nga_periodic_get ',tmp
endif
tmp = t3
call ga_dgop(5,tmp,1,'min')
if (me.eq.0) then
write(6,*) 'Minimum time for (sync)nga_periodic_get ',tmp
endif
tmp = t3
call ga_dgop(6,tmp,1,'+')
if (me.eq.0) then
write(6,*) 'Average time for (sync)nga_periodic_get ',
+ tmp/dble(nproc)
endif
127 continue
c
c*** Print success
c
if (me.eq.0) then
write(6,*)
write(6,*) 'All tests successful'
write(6,*)
endif
c
c*** Tidy up the GA package
c
call ga_terminate()
c
c*** Tidy up after message-passing library
c
call MP_FINALIZE()
c
stop
end
c
subroutine aprint(a,nrow,ncol,ld,has_data)
#include "global.fh"
integer ld
integer a(ld,*)
integer i, j, k, nproc
logical has_data(0:1999)
nproc = ga_nnodes()
do k = 1, nproc
call ga_sync
if (k-1.eq.ga_nodeid().and.has_data(k-1)) then
write(6,*) '*'
write(6,*) '* Data on processor ',k-1
write(6,*) '*'
do i = 1, min(nrow,12)
write (6,102) (a(i,j), j = 1, min(ncol,12))
102 format(14i5)
end do
endif
call ffflush(6)
enddo
c
return
end
c
subroutine atest(a,nrow,ncol,ld,b,ld2,has_data)
#include "global.fh"
integer ld
integer a(ld,*), b(ld2,*)
integer i, j, k, nproc
logical has_data(0:1999), check_data
nproc = ga_nnodes()
check_data = .true.
do k = 1, nproc
call ga_sync
if (k-1.eq.ga_nodeid().and.has_data(k-1)) then
do i = 1, nrow
do j = 1, ncol
if (a(i,j).ne.b(i,j)) check_data = .false.
end do
end do
if (check_data) then
write(6,*) '*'
write(6,*) '* Data from nga_access_ghosts and'
write(6,*) '* nga_periodic_get is the same on'
write(6,*) '* processor ',k-1
write(6,*) '*'
else
write(6,*) '*'
write(6,*) '* Data from nga_access_ghosts and'
write(6,*) '* nga_periodic_get is NOT the same on'
write(6,*) '* processor ',k-1
write(6,*) '*'
endif
endif
call ffflush(6)
enddo
c
return
end
c
subroutine factor(p,ndim,dims)
implicit none
integer i,j,p,ndim,dims(7),imin,mdim
integer ip,ifac,pmax,prime(1000)
integer fac(1000)
c
i = 1
ip = p
do i = 1, ndim
dims(i) = 1
end do
c
c factor p completely
c first, find all prime numbers less than or equal to p
c
pmax = 0
do i = 2, p
do j = 1, pmax
if (mod(i,prime(j)).eq.0) go to 100
end do
pmax = pmax + 1
prime(pmax) = i
100 continue
end do
c
c find all prime factors of p
c
ifac = 0
do i = 1, pmax
200 if (mod(ip,prime(i)).eq.0) then
ifac = ifac + 1
fac(ifac) = prime(i)
ip = ip/prime(i)
go to 200
endif
end do
c
c determine dimensions of processor grid
c
do i = ifac, 1, -1
c
c find dimension with minimum value
c
imin = dims(1)
mdim = 1
do j = 2, ndim
if (dims(j).lt.imin) then
imin = dims(j)
mdim = j
endif
end do
dims(mdim) = dims(mdim)*fac(i)
end do
c
return
end
|
