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More I/O in Cholesky

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This commit is contained in:
Anthony Scemama 2024-06-04 19:31:39 +02:00
parent c95a0b2d87
commit b9f041e5e5
1 changed files with 94 additions and 104 deletions
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196
src/ao_two_e_ints/cholesky.irp.f
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@ -31,12 +31,12 @@ END_PROVIDER
integer*8 :: ndim8
integer :: rank
double precision :: tau, tau2
double precision, pointer :: L(:,:)
double precision, pointer :: L(:,:), Delta(:,:)
double precision :: s
double precision :: dscale, dscale_tmp
double precision, allocatable :: D(:), Delta(:,:), Ltmp_p(:,:), Ltmp_q(:,:), D_sorted(:)
double precision, allocatable :: D(:), Ltmp_p(:,:), Ltmp_q(:,:), D_sorted(:), Delta_col(:)
integer, allocatable :: addr1(:), addr2(:)
integer*8, allocatable :: Lset(:), Dset(:), addr3(:)
logical, allocatable :: computed(:)
@ -52,7 +52,7 @@ END_PROVIDER
double precision, external :: ao_two_e_integral
integer :: block_size, iblock
double precision :: mem
double precision :: mem, mem0
double precision, external :: memory_of_double, memory_of_int
double precision, external :: memory_of_double8, memory_of_int8
@ -64,8 +64,11 @@ END_PROVIDER
type(c_ptr) :: c_pointer(2)
integer :: fd(2)
logical :: delta_on_disk
call wall_time(wall0)
! Will be reallocated at the end
deallocate(cholesky_ao)
if (read_ao_cholesky) then
@ -82,11 +85,11 @@ END_PROVIDER
PROVIDE nucl_coord ao_two_e_integral_schwartz
call set_multiple_levels_omp(.False.)
call resident_memory(mem0)
rank_max = min(ndim8,274877906944_8/1_8/ndim8)
call mmap(trim(ezfio_work_dir)//'cholesky_ao_tmp', (/ ndim8, rank_max /), 8, fd(1), .False., c_pointer(1))
call c_f_pointer(c_pointer(1), L, (/ ndim8, rank_max /))
!print *, 'rank_max/ndim8', dble(rank_max) / dble(ndim8)
! Deleting the file while it is open makes the file invisible on the filesystem,
! and automatically deleted, even if the program crashes
iunit = getUnitAndOpen(trim(ezfio_work_dir)//'cholesky_ao_tmp', 'R')
@ -161,32 +164,16 @@ END_PROVIDER
Dmax = D_sorted(1)
! 2.
dscale = tau2/Dmax
do i8=1,ndim8
if (D_sorted(i8) <= dscale) exit
enddo
mem = qp_max_mem+1
do while ( (mem > qp_max_mem).and.(i8>1_8) )
dscale = min(1.d0,dsqrt(tau2/(D_sorted(i8)*Dmax)))
dscale_tmp = dscale*dscale*Dmax
! print *, 'dscale = ', dscale, dble(i8)/dble(ndim8)
np8=0_8
do p8=1,ndim8
if ( dscale_tmp*D(p8) > tau2 ) then
np8 = np8+1_8
Lset(np8) = p8
endif
enddo
i8 = i8*3_8/4_8
if (np8 > huge(1_4)/64_8) cycle
np = np8
! print *, 'np = ', np
call resident_memory(mem)
mem = mem &
+ 0.1d0*np*memory_of_double(np) ! Delta(np,nq)
dscale = 1.d0
dscale_tmp = dscale*dscale*Dmax
np8=0_8
do p8=1,ndim8
if ( dscale_tmp*D(p8) > tau2 ) then
np8 = np8+1_8
Lset(np8) = p8
endif
enddo
np = np8
! 3.
N = 0
@ -218,13 +205,11 @@ END_PROVIDER
enddo
call resident_memory(mem)
mem = mem &
+ np*memory_of_double(nq) &! Delta(np,nq)
+ (np+nq)*memory_of_double(block_size) ! Ltmp_p(np,block_size) + Ltmp_q(nq,block_size)
mem = mem0 &
+ np*memory_of_double(nq)
!print *, 'mem = ', mem
if (mem > qp_max_mem) then
if (mem > 300.d0) then ! 300GB max for Delta
s = s*2.d0
else
exit
@ -239,18 +224,33 @@ END_PROVIDER
stop -1
endif
if (s > 0.1d0) then
exit
endif
enddo
! d., e.
mem = mem0 &
+ memory_of_int(nq) &! computed(nq)
+ np*memory_of_int(nq) &! computed(nq)
+ (np+nq)*memory_of_double(block_size) ! Ltmp_p(np,block_size) + Ltmp_q(nq,block_size)
allocate(Delta(np,nq), stat=ierr)
!print *, 'allocate : Delta(np,nq)', memory_of_double8(np*nq*1_8)
if (ierr /= 0) then
call print_memory_usage()
print *, irp_here, ': allocation failed : (Delta(np,nq))'
stop -1
if (mem > qp_max_mem) then
call mmap(trim(ezfio_work_dir)//'cholesky_delta', (/ np*1_8, nq*1_8 /), 8, fd(2), .False., c_pointer(2))
call c_f_pointer(c_pointer(2), Delta, (/ np, nq /))
! Deleting the file while it is open makes the file invisible on the filesystem,
! and automatically deleted, even if the program crashes
iunit = getUnitAndOpen(trim(ezfio_work_dir)//'cholesky_delta', 'R')
close(iunit,status='delete')
delta_on_disk = .True.
else
allocate(Delta(np,nq))
delta_on_disk = .False.
endif
print *, delta_on_disk
allocate(Delta_col(np))
allocate(Ltmp_p(np,block_size), stat=ierr)
!print *, 'allocate : Ltmp_p(np,block_size)', memory_of_double8(np*block_size*1_8), np, block_size
@ -272,40 +272,38 @@ END_PROVIDER
allocate(computed(nq))
!print *, 'allocate : computed(nq)', memory_of_int(nq)
!print *, 'N, rank, block_size', N, rank, block_size
!print *, 'p1'
!$OMP PARALLEL DO DEFAULT(SHARED) PRIVATE(p,q,j)
do q=1,nq
computed(q) = .False.
do j=1,np
Delta(j,q) = 0.d0
enddo
enddo
!$OMP END PARALLEL DO
!$OMP PARALLEL DEFAULT(SHARED) PRIVATE(k,p,q,j)
do k=1,N
!$OMP DO
do p=1,np
Ltmp_p(p,k) = L(Lset(p),k)
Ltmp_p(p,k) = L(Lset(p),k)
enddo
!$OMP END DO NOWAIT
!$OMP DO
do q=1,nq
Ltmp_q(q,k) = L(Dset(q),k)
computed(q) = .False.
Ltmp_q(q,k) = L(Dset(q),k)
enddo
!$OMP END DO NOWAIT
enddo
!$OMP BARRIER
!$OMP END PARALLEL
!print *, 'p2', np, nq, N
if (N>0) then
call dgemm('N','T', np, nq, N, -1.d0, &
Ltmp_p, np, Ltmp_q, nq, 1.d0, Delta, np)
call dgemm('N','T', np, nq, N, -1.d0, &
Ltmp_p, np, Ltmp_q, nq, 0.d0, Delta, np)
else
!$OMP PARALLEL DO DEFAULT(SHARED) PRIVATE(q,j) SCHEDULE(static,1)
do q=1,nq
do j=1,np
Delta(j,q) = 0.d0
enddo
enddo
!$OMP END PARALLEL DO
endif
! f.
@ -324,10 +322,8 @@ END_PROVIDER
rank = N+j
if (iblock == block_size) then
!print *, 'dgemm', np, nq
call dgemm('N','T',np,nq,block_size,-1.d0, &
Ltmp_p, np, Ltmp_q, nq, 1.d0, Delta, np)
Ltmp_p, np, Ltmp_q, nq, 1.d0, Delta, np)
iblock = 0
endif
@ -343,43 +339,51 @@ END_PROVIDER
L(i8, rank) = 0.d0
enddo
iblock = iblock+1
!$OMP PARALLEL DO PRIVATE(p)
do p=1,np
Ltmp_p(p,iblock) = Delta(p,dj)
enddo
!$OMP END PARALLEL DO
if (.not.computed(dj)) then
m = dj
if (do_direct_integrals) then
!$OMP PARALLEL DO PRIVATE(k) SCHEDULE(dynamic,16)
do k=np,1,-1
!$OMP PARALLEL DO PRIVATE(k) SCHEDULE(dynamic,21)
do k=1,np
if (.not.ao_two_e_integral_zero( addr1(Lset(k)), addr1(Dset(m)),&
addr2(Lset(k)), addr2(Dset(m)) ) ) then
Delta(k,m) = Delta(k,m) + &
Delta_col(k) = &
ao_two_e_integral(addr1(Lset(k)), addr2(Lset(k)),&
addr1(Dset(m)), addr2(Dset(m)))
endif
enddo
!$OMP END PARALLEL DO
else
!$OMP PARALLEL DO PRIVATE(k) SCHEDULE(dynamic,16)
do k=np,1,-1
!$OMP PARALLEL DO PRIVATE(k) SCHEDULE(dynamic,21)
do k=1,np
if (.not.ao_two_e_integral_zero( addr1(Lset(k)), addr1(Dset(m)),&
addr2(Lset(k)), addr2(Dset(m)) ) ) then
Delta(k,m) = Delta(k,m) + &
Delta_col(k) = &
get_ao_two_e_integral( addr1(Lset(k)), addr1(Dset(m)),&
addr2(Lset(k)), addr2(Dset(m)), ao_integrals_map)
endif
enddo
!$OMP END PARALLEL DO
endif
!$OMP PARALLEL DO PRIVATE(p)
do p=1,np
Ltmp_p(p,iblock) = Ltmp_p(p,iblock) + Delta_col(p)
Delta(p,dj) = Ltmp_p(p,iblock)
enddo
!$OMP END PARALLEL DO
computed(dj) = .True.
endif
iblock = iblock+1
!print *, iblock
do p=1,np
Ltmp_p(p,iblock) = Delta(p,dj)
enddo
! iv.
if (iblock > 1) then
!print *, 'dgemv', iblock
call dgemv('N', np, iblock-1, -1.d0, Ltmp_p, np, Ltmp_q(dj,1), nq, 1.d0,&
Ltmp_p(1,iblock), 1)
endif
@ -412,10 +416,15 @@ END_PROVIDER
print '(I10, 4X, ES12.3)', rank, Qmax
deallocate(Delta_col)
deallocate(Ltmp_p)
deallocate(Ltmp_q)
deallocate(computed)
deallocate(Delta)
if (delta_on_disk) then
call munmap( (/ np*1_8, nq*1_8 /), 8, fd(2), c_pointer(2) )
else
deallocate(Delta)
endif
! i.
N = rank
@ -426,35 +435,16 @@ END_PROVIDER
Dmax = max(Dmax, D(Lset(p)))
enddo
mem = qp_max_mem+1
do while ( (mem > qp_max_mem).and.(i8>1_8) )
dscale = min(1.d0,dsqrt(tau2/(D_sorted(i8)*Dmax)))
dscale_tmp = dscale*dscale*Dmax
!print *, 'dscale = ', dscale, dble(i8)/dble(ndim8)
np8=0_8
do p8=1,ndim8
if ( dscale_tmp*D(p8) > tau2 ) then
np8 = np8+1_8
Lset(np8) = p8
endif
enddo
i8 = i8*3_8/4_8
if (np8 > huge(1_4)/64_8) cycle
np = np8
!print *, 'np = ', np
call resident_memory(mem)
mem = mem &
+ 0.1d0*np*memory_of_double(np) ! Delta(np,nq)
dscale = 1.d0
dscale_tmp = dscale*dscale*Dmax
np8=0_8
do p8=1,ndim8
if ( dscale_tmp*D(p8) > tau2 ) then
np8 = np8+1_8
Lset(np8) = p8
endif
enddo
if (np == 0) then
call print_memory_usage()
print *, 'Required peak memory: ', mem, 'Gb'
call resident_memory(mem)
print *, 'Already used memory: ', mem, 'Gb'
print *, 'Not enough memory. Reduce cholesky threshold'
stop -1
endif
np = np8
enddo
@ -480,7 +470,7 @@ END_PROVIDER
enddo
!$OMP END PARALLEL DO
call munmap( (/ ndim8, ndim8 /), 8, fd(1), c_pointer(1) )
call munmap( (/ ndim8, rank_max /), 8, fd(1), c_pointer(1) )
cholesky_ao_num = rank