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new_pbbeps2.f
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!-----------------------------------------------------------------------
! * * * periodic 2d electromagnetic particle simulation kernel code * *
! this is a simple 2d skeleton particle-in-cell code designed for
! exploring new computer architectures. it contains the critical pieces
! needed for depositing charge and current, advancing particles, and
! solving the fields. the code moves electrons and ions, with periodic
! electromagnetic forces obtained by solving maxwell's equation with
! fast fourier transforms.
! portable gcpic kernel code, using algorithm described in:
! p. c. liewer and v. k. decyk, j. computational phys. 85, 302 (1989).
! written by viktor k. decyk, ucla
! for mpi distributed memory multiprocessing macintosh g4 computers
! copyright 2000, regents of the university of california
! update: may 1, 2013
program pbbeps2
use pinit2d
use pempush2d
use pfield2d
use pdiag2d
use pemsimul2d
use mp0d, only: mpinit, ncpus
implicit none
! idps = number of partition boundaries
! idimp = dimension of phase space = 5
! mshare = (0,1) = (no,yes) architecture is shared memory
integer :: idps = 2, idimp = 5, mshare = 0
! nmv = number of segments in v for velocity distribution
! ipbc = particle boundary condition = (0,1,2,3) =
! (none,2d periodic,2d reflecting,mixed reflecting/periodic)
integer :: nmv = 40, vect = 0, ipbc = 1
! default unit numbers
integer :: iuin = 8, iuot = 18, iudm = 19, iud = 12, iuv = 10
integer :: iuvi = 20, iup = 11, iua = 15, iuj = 25, iue = 26
integer :: ium = 21, iuer = 2
! integer :: npxy, npxyb, np, npxyi, npxybi, npi
double precision :: npxy, npxyb, np, npxyi, npxybi, npi
integer :: nx, ny, nxh, nyh, nyv, nxe, nxeh
integer :: nloop, nvp, nblok, npmax, npimax = 0, kyp, kxp, nypmx
integer :: kyb, kxb, kxyb, kbmin, kblok, jbmin, jblok
integer :: ngds, nxyh, nxhy, nx1, nypm1, nbmax
integer :: idproc, id0, kstrt, itime, itime0, ntime, isign
integer :: it, itw, ierr, iur1, iur2, irc
integer :: ntasks
real :: zero = 0.0, wki = 0.0, ltime = 0.0, tloop = 0.0, ts = 0.0
real :: we = 0.0, wf = 0.0, wm = 0.0, wke = 0.0
real :: tpush = 0.0, tdpost = 0.0, tdjpost = 0.0, tsort = 0.0
real :: tpushi = 0.0, tdposti = 0.0, tdjposti = 0.0, tsorti = 0.0
real :: tfield = 0.0, totpush = 0.0, totpushi = 0.0
real :: qbme, qbmi, affp, dth, qi0, omt, q2m0, wp0, etx
real :: sx = 0.0, sy = 0.0, sz = 0.0
real :: pxe = 0.0, pye = 0.0, pze = 0.0
real :: pxi = 0.0, pyi = 0.0, pzi = 0.0
real :: wx, wy, wz
real :: vtxi, vtyi, vtzi, vtdxi, vtdyi, vtdzi
double precision :: dtime, ldtime
real, dimension(:,:,:), pointer :: part, part2, parti, parti2
real, dimension(:,:,:), pointer :: qe, qi
real, dimension(:,:,:,:), pointer :: cu, amu, fxyze, bxyze
complex, dimension(:,:,:,:), pointer :: exyz, bxyz
complex, dimension(:,:,:), pointer :: qt
complex, dimension(:,:,:,:), pointer :: cut, amut, fxyt, bxyt
complex, dimension(:,:,:), pointer :: ffc, ffe
integer, dimension(:), pointer :: mixup
complex, dimension(:), pointer :: sct
real, dimension(:,:), pointer :: edges
integer, dimension(:), pointer :: nyp, noff
integer, dimension(:), pointer :: npp, nppi, nps
real, dimension(:,:), pointer :: pt
integer, dimension(:,:), pointer :: ip, npic
real, dimension(:,:,:), pointer :: sfield
complex, dimension(:,:,:), pointer :: sfieldt, dent, pott
real, dimension(:,:,:,:), pointer :: cui, cutt, vfield
complex, dimension(:,:,:,:), pointer :: vfieldt
complex, dimension(:,:,:,:), pointer :: vpott, vcurt, vpotr
real, dimension(:,:,:), pointer :: fv, fvm, fvi, fvmi
real, dimension(:,:), pointer :: wt
! wtot = total energy
real, dimension(7) :: wtot
! time = timing array
real, dimension(2) :: tfft = 0.0, time = 0.0
real, dimension(2) :: tmove = 0.0, tmovi = 0.0
! msg = heartbeat array
double precision, dimension(12) :: msg
character(len=10) :: cdrun
character(len=32) :: fname
character(len=12) :: label
integer, external :: NDIAN, NDPREC, IDPREC
991 format (' T = ',i7)
! get unit number for error file
iuer = get_funit(iuer)
! nvp = number of real or virtual processors
! initialize for parallel processing
call PPINIT(idproc,id0,nvp)
kstrt = idproc + 1
! read namelist
if (id0==0) then
iuin = get_funit(iuin)
open(unit=iuin,file='pinput2',form='formatted',status='old')
read (iuin,pinput2)
endif
! override input data
idcode = 2
psolve = 1
ndim = 3
! broadcast namelist to other nodes
call sendnml()
! set monitor flag
call SET_MON(monitor)
! create string from idrun
write (cdrun,'(i10)') idrun
cdrun = adjustl(cdrun)
! text output file
if (id0==0) then
iuot = get_funit(iuot)
fname = 'poutput2.'//cdrun
open(unit=iuot,file=trim(fname),form='formatted',status= &
&'replace')
endif
! np = total number of electrons in simulation
! npxy = npx*npy; npxyb = npxb*npyb; np = npxy + npxyb
npxy = dble(npx)*dble(npy); npxyb = dble(npxb)*dble(npyb)
np = npxy + npxyb
! npi = total number of ions in simulation
! npxyi = npxi*npyi; npxybi = npxbi*npybi; npi = npxyi + npxybi
npxyi = dble(npxi)*dble(npyi); npxybi = dble(npxbi)*dble(npybi)
npi = npxyi + npxybi
nx = 2**indx; ny = 2**indy; nxh = nx/2; nyh = max(1,ny/2)
nyv = ny + 2; nxe = nx + 4
! kyp = number of complex grids in each field partition in y direction
! nypmx = maximum size of particle partition, including guard cells.
kyp = (ny - 1)/nvp + 1; nypmx = kyp + 3
! ngds = number of guard cells
ngds = 3*((idps - 1)/2 + 1)
! ax = .866025; ay = .866025; az = .866025
if (inorder==LINEAR) then
ax = .912871; ay = .912871
nxe = nx + 2; ; nypmx = kyp + 1
ngds = (idps - 1)/2 + 1
endif
nxeh = nxe/2
! check if too many processors
if (nvp > ny) then
write (2,*) 'Too many processors requested, ny, nvp=', ny, nvp
call PPEXIT
stop
endif
! initialize for multiprocessing
ntasks = mpinit(sntasks)
call MP_SETSTACK(262144)
if (dopt==VECTOR) vect = 1
! nloop = number of time steps in simulation
nloop = tend/dt + .0001
! nblok = number of particle partitions
nblok = 1 + mshare*(nvp - 1)
! npmax = maximum number of electrons in each partition
npmax = (np/nvp)*1.25
if (movion==1) npimax = (npi/nvp)*1.25
! kxp = number of complex grids in each field partition in x direction
kxp = (nxh - 1)/nvp + 1
! kyb = number of processors in y
! kxb = number of processors in x
kyb = ny/kyp; kxb = nxh/kxp
! kxyb = maximum(kxb,kyb)
kxyb = max(kxb,kyb)
! kblok = number of field partitions in y direction
kbmin = 1 + (1 - mshare)*(kxyb/kxb - 1)
kblok = 1 + mshare*(ny/kyp - 1)
! jblok = number of field partitions in x direction
jbmin = 1 + (1 - mshare)*(kxyb/kyb - 1)
jblok = 1 + mshare*(nxh/kxp - 1)
! nxyh = maximum(nx,ny)/2
nxyh = max(nx,ny)/2
! nxhy = maximum(nx/2,ny)
nxhy = max(nxh,ny)
! dimensions for index and sorting arrays
nx1 = nx + 1; nypm1 = kyp + 1
! nbmax = size of buffer for passing particles between processors
nbmax = 1 + (2*(npxy*vty + npxyb*vtdy) + 1.4*npxyb*abs(vdy))*dt/ny
! nbmax = 2*nbmax
if (movion==1) then
vtxi = vtx/sqrt(rmass*rtempxi)
vtyi = vty/sqrt(rmass*rtempyi)
vtzi = vtz/sqrt(rmass*rtempzi)
endif
! initialize time constants
itime0 = 0
itime = itime0
ntime = itime + itime0
! diagnostic information needed by diagnostic nodes
! set default diagnostic file names
if (ntd > 0) fdname = 'pdenk2.'//cdrun
if (ntp > 0) fpname = 'ppotk2.'//cdrun
if (nta > 0) faname = 'pvpotk2.'//cdrun
if (ntj > 0) fjname = 'pvcurk2.'//cdrun
if (nte > 0) fename = 'pvpotrk2.'//cdrun
! energy time history
if (ndw > 0) then
allocate(wt((nloop-1)/ndw-(itime0/ndw)+1,7))
itw = 0
endif
! open restart files
if (id0==0) then
if (nustrt==0) then
call restart_open(nustrt,ntr,idrun0,iur1,iur2,iuer)
else
call restart_open(nustrt,ntr,idrun,iur1,iur2,iuer)
endif
endif
! open graphics device
call GROPEN
call SETNPLT(nplot,irc)
call STPALIT(idpal)
!
! diagnostic nodes have special processing
if (idproc < 0) call diag2nodes
!
! part(1,n,l) = position x of particle n in partition l
! part(2,n,l) = position y of particle n in partition l
! part(3,n,l) = velocity vx of particle n in partition l
! part(4,n,l) = velocity vy of particle n in partition l
! part(5,n,l) = velocity vz of particle n in partition l
allocate(part(idimp,npmax,nblok))
! maskp = scratch array for particle addresses
! allocate(maskp(npmax,inblok))
! in real space, qe(j+1,k,l) = charge density at grid point (j,kk)
! in real space, qi(j+1,k,l) = ion charge density at grid point (j,kk)
! at grid point (j,kk), where kk = k + noff(l) - 1
allocate(qe(nxe,nypmx*kbmin,kblok),qi(nxe,nypmx*kbmin,kblok))
! in real space, fxyze(i,j+1,k,l) = i component of force/charge at
! grid point (j,kk)
! in other words, fxyze are the convolutions of the electric field
! over the particle shape, where kk = k + noff(l) - 1
allocate(fxyze(3,nxe,nypmx*kbmin,kblok))
! bxyze(i,j+1,k,l) = i component of magnetic field at grid point (j,kk)
allocate(bxyze(3,nxe,nypmx*kbmin,kblok))
! in fourier space, exyz = transverse electric field
! in fourier space, bxyz = magnetic field
allocate(exyz(3,nyv,kxp,jblok),bxyz(3,nyv,kxp,jblok))
! in real space, cu(3,j+1,k,l) = current density at grid point (j,kk)
allocate(cu(3,nxe,nypmx*kbmin,kblok))
! qt(k,j,l) = complex charge density for fourier mode jj-1,k-1
! cut(k,j,l) = complex current density for fourier mode jj-1,k-1
allocate(qt(nyv,kxp,jblok),cut(3,nyv,kxp,jblok))
! fxyt(i,k,j,l) = i component of force/charge for fourier mode jj-1,k-1
! bxyt(i,k,j,l) = i component of magnetic field for mode jj-1,k-1
! where jj = j + kxp*(l - 1)
allocate(fxyt(3,nyv,kxp,jblok),bxyt(3,nyv,kxp,jblok))
! ffc = form factor array for poisson solver
allocate(ffc(nyh,kxp,jblok))
! mixup, sct = arrays for fft
allocate(mixup(nxhy),sct(nxyh))
! edges(1,l) = lower boundary of particle partition l
! edges(2,l) = upper boundary of particle partition l
allocate(edges(idps,nblok))
! nyp(l) = number of primary gridpoints in particle partition l.
! noff(l) = lowermost global gridpoint in particle partition l.
allocate(nyp(nblok),noff(nblok))
! npp(l) = number of particles in partition l
! nps(l) = starting address of particles in partition l
allocate(npp(nblok),nps(nblok))
! initialize parallel timer
call pwtimer(time,dtime,-1)
! initialize constants
qbme = qme
affp = dble(nx)*dble(ny)/np
qbmi = zero
omt = sqrt(omx*omx + omy*omy + omz*omz)
q2m0 = qbme*qme*np/(dble(nx)*dble(ny))
dth = 0.0
! debug
! dth = .5*dt
if (movion==1) then
qbmi = qmi/rmass
vtdxi = vtx/sqrt(rmass*rtempdxi)
vtdyi = vty/sqrt(rmass*rtempdyi)
vtdzi = vtz/sqrt(rmass*rtempdzi)
q2m0 = q2m0 + qbmi*qmi*npi/(dble(nx)*dble(ny))
endif
wp0 = q2m0*affp
! set initial time
t0 = dt*real(itime0)
! determine number format and default precisions
indian = NDIAN()
rlprec = NDPREC()
inprec = IDPREC()
! calculate partition variables
call dcomp(edges,nyp,noff,ny,kstrt,nvp,inorder)
! initialize electromagnetic fields
bxyze = 0.
if (omt > 0) then
call baddext(bxyze,nyp,omx,omy,omz,nx,inorder)
call pcguard(bxyze,kstrt,nvp,kyp,inorder)
call cguard(bxyze,nyp,nx,inorder)
endif
bxyz = cmplx(0.,0.)
exyz = cmplx(0.,0.)
cu = 0.0
! prepare fft tables
call fft_init(mixup,sct,indx,indy)
! calculate form factors
call pois_init(ffc,ax,ay,affp,nx,ny,kstrt)
! allocate ion data
if (movion==1) then
allocate(parti(idimp,npimax,nblok),nppi(nblok))
allocate(parti2(0,0,0))
endif
! new start
if (nustrt==1) then
! initialize electrons
nps = 1
npp = 0
! background electrons
! if (npxy > 0) call distr(part,edges,npp,nps,vtx,vty,vx0,vy0,npx&
! &,npy,nx,ny,ipbc)
! if (npxy > 0) call distr(part,edges,npp,nps,vtx,vty,vtz,vx0,vy0&
! &,vz0,npx,npy,nx,ny,ipbc)
if (npxy > 0) then
call fdistr(part,nps,ampdx,scaledx,shiftdx,ampdy,scaledy, &
&shiftdy,npx,npy,nx,ny,kstrt,nvp,ipbc,ndprof,nsrand)
call vdistr(part,npp,nps,vtx,vty,vtz,vx0,vy0,vz0,npx,npy, &
&kstrt,nvp)
! call vfdistr(part,nps,ampdx,scaledx,shiftdx,ampdy,scaledy, &
! &shiftdy,npx,npy,nx,ny,kstrt,nvp,ipbc,ndprof,nsrand)
! call vvdistr(part,npp,nps,vtx,vty,vtz,vx0,vy0,vz0,npx,npy, &
! &kstrt,nvp,ndim)
endif
! beam electrons
nps = npp + 1
! if (npxyb > 0) call distr(part,edges,npp,nps,vtdx,vtdy,vdx,vdy,&
! &npxb,npyb,nx,ny,ipbc)
! if (npxyb > 0) call distr(part,edges,npp,nps,vtdx,vtdy,vtdz,vdx&
! &,vdy,vdz,npxb,npyb,nx,ny,ipbc)
if (npxyb > 0) then
call fdistr(part,nps,ampdx,scaledx,shiftdx,ampdy,scaledy, &
&shiftdy,npxb,npyb,nx,ny,kstrt,nvp,ipbc,ndprof,nsrand)
call vdistr(part,npp,nps,vtdx,vtdy,vtdz,vdx,vdy,vdz,npxb, &
&npyb,kstrt,nvp)
! call vfdistr(part,nps,ampdx,scaledx,shiftdx,ampdy,scaledy, &
! &shiftdy,npxb,npyb,nx,ny,kstrt,nvp,ipbc,ndprof,nsrand)
! call vvdistr(part,npp,nps,vtdx,vtdy,vtdz,vdx,vdy,vdz,npxb, &
! &npyb,kstrt,nvp,ndim)
endif
! initialize background charge density
if (movion==0) then
qi0 = -qme/affp
call dpostg(part,qi,npp,noff,nyp,kstrt,nvp,nx,kyp,ngds,-qme,&
&tdpost,inorder,dopt)
! debug
! call sguard(qi,nyp,qi0,nx,inorder)
endif
! fix guiding centers for electrons
if (omt > 0) then
if (relativity==1) then
call distr(part,bxyze,npp,noff,qbme,ci,nx,ny,ipbc,inorder&
&)
else
call distr(part,bxyze,npp,noff,qbme,nx,ny,ipbc,inorder)
endif
endif
! move electrons into appropriate spatial regions
call pmove(part,edges,npp,tmove,ny,kstrt,nvp,nbmax,vect,ierr)
! calculate initial electron momentum
if (ntm > 0) call initmomt2(part,npp,pxe,pye,pze,ndim)
! initialize ions
if (movion==1) then
nps = 1
nppi = 0
! background ions
! if (npxyi > 0) call distr(parti,edges,nppi,nps,vtxi,vtyi, &
! &vxi0,vyi0,npxi,npyi,nx,ny,ipbc)
! if (npxyi > 0) call distr(parti,edges,nppi,nps,vtxi,vtyi, &
! &vtzi,vxi0,vyi0,vzi0,npxi,npyi,nx,ny,ipbc)
if (npxyi > 0) then
call fdistr(parti,nps,ampdxi,scaledxi,shiftdxi,ampdyi, &
&scaledyi,shiftdyi,npxi,npyi,nx,ny,kstrt,nvp,ipbc,ndprofi,nsrandi)
call vdistr(parti,nppi,nps,vtxi,vtyi,vtzi,vxi0,vyi0,vzi0,&
&npxi,npyi,kstrt,nvp)
! call vfdistr(parti,nps,ampdxi,scaledxi,shiftdxi,ampdyi, &
! &scaledyi,shiftdyi,npxi,npyi,nx,ny,kstrt,nvp,ipbc,ndprofi,nsrandi)
! call vvdistr(parti,nppi,nps,vtxi,vtyi,vtzi,vxi0,vyi0,vzi0&
! &,npxi,npyi,kstrt,nvp,ndim)
endif
! beam ions
nps = nppi + 1
! if (npxybi > 0) call distr(parti,edges,nppi,nps,vtdxi,vtdyi,&
! &vdxi,vdyi,npxbi,npybi,nx,ny,ipbc)
! if (npxybi > 0) call distr(parti,edges,nppi,nps,vtdxi,vtdyi,&
! &vtdzi,vdxi,vdyi,vdzi,npxbi,npybi,nx,ny,ipbc)
if (npxybi > 0) then
call fdistr(parti,nps,ampdxi,scaledxi,shiftdxi,ampdyi, &
&scaledyi,shiftdyi,npxbi,npybi,nx,ny,kstrt,nvp,ipbc,ndprofi,nsrandi&
&)
call vdistr(parti,nppi,nps,vtdxi,vtdyi,vtdzi,vdxi,vdyi, &
&vdzi,npxbi,npybi,kstrt,nvp)
! call vfdistr(parti,nps,ampdxi,scaledxi,shiftdxi,ampdyi, &
! &scaledyi,shiftdyi,npxbi,npybi,nx,ny,kstrt,nvp,ipbc,ndprofi,nsrandi&
! &)
! call vvdistr(parti,nppi,nps,vtdxi,vtdyi,vtdzi,vdxi,vdyi, &
! &vdzi,npxbi,npybi,kstrt,nvp,ndim)
endif
! fix guiding centers for ions
if (omt > 0) then
if (relativity==1) then
call distr(parti,bxyze,nppi,noff,qbmi,ci,nx,ny,ipbc, &
&inorder)
else
call distr(parti,bxyze,nppi,noff,qbmi,nx,ny,ipbc, &
&inorder)
endif
endif
! move ions into appropriate spatial regions
call pmove(parti,edges,nppi,tmovi,ny,kstrt,nvp,nbmax,vect, &
&ierr)
! calculate initial ion momentum
if (ntm > 0) call initmomt2(parti,nppi,pxi,pyi,pzi,ndim)
endif
! freeze the ions now
if ((movion==1).and.(ntime==ionoff)) then
! initialize ion charge density
call dpostg(parti,qi,nppi,noff,nyp,kstrt,nvp,nx,kyp,ngds,qmi&
&,tdposti,inorder,dopt)
! delete ions
deallocate(parti,nppi)
movion = 0
endif
! retard electron velocities to deposit current
! call retardg(part,npp,dth,ci,nx,ny,ipbc,relativity)
! move electrons into appropriate spatial regions
! call pmove(part,edges,npp,tmove,ny,kstrt,nvp,nbmax,vect,ierr)
! retard ion velocities to deposit current
! if (movion==1) then
! call retardg(parti,nppi,dth,ci,nx,ny,ipbc,relativity)
! move ions into appropriate spatial regions
! call pmove(parti,edges,nppi,tmovi,ny,kstrt,nvp,nbmax,vect, &
! &ierr)
! endif
! restart
else
! read restart files
it = 0
call restart_bread(iur1,iur2,id0,it,itime,itime0,nvp,npp,part, &
&movion,nppi,parti,qi,irc,iuer,ef=exyz,bf=bxyz)
if (irc /= 0) go to 400
! initiate momentum diagnostic
if (ntm > 0) then
call initmomt2(part,npp,pxe,pye,pze,ndim)
if (movion==1) call initmomt2(parti,nppi,pxi,pyi,pzi,ndim)
endif
! extend run
if (nustrt==0) then
itime0 = itime + itime0
t0 = dt*real(itime0)
itime = 0
ntime = itime + itime0
if (id0==0) then
if (iur1 >= 0) close (unit=iur1)
if (iur2 >= 0) close (unit=iur2)
call restart_open(1,ntr,idrun,iur1,iur2,iuer)
endif
go to 490
endif
! read diagnostics
call restart_dread(it,id0,itime,itw,wt,iud,ndrec,fdname,iup, &
&nprec,fpname,irc,iuer,iua,narec,faname,iuj,njrec,fjname,iue,nerec,&
&fename)
! handle error
if (irc /= 0) then
if (id0==0) write (iuer,*) 'Restart Error'
go to 3000
endif
if (irc /= 0) go to 400
ntime = itime + itime0
t0 = dt*real(itime0)
if (id0==0) rewind it
go to 490
! handle error
400 if (id0==0) write (iuer,*) 'Restart Error'
go to 3000
endif
!
490 if (ntime > 0) dth = .5*dt
! sorting arrays
allocate(pt(max(npmax,npimax),nblok))
allocate(ip(max(npmax,npimax),nblok),npic(nypm1,nblok))
if (sortime > 0) then
allocate(part2(idimp,npmax,nblok))
else
allocate(part2(0,0,0))
endif
! reduce size of particle manager buffers
! nbmax = nbmax/2
! initialize diagnostics
! open initial diagnostic metafile
if (id0==0) then
iudm = get_funit(iudm)
fname = 'pdiag2.init.'//cdrun
open(unit=iudm,file=trim(fname),form='formatted',status= &
&'replace')
endif
! ion density or potential diagnostics
if ((ntp > 0) .or. (ndp > 0) .or. (ntd > 0) .or. (ndd > 0)) then
allocate(sfield(nxe,nypmx*kbmin,kblok))
allocate(sfieldt(nyv,kxp,jblok))
endif
! ion density diagnostics
call initmodediag(dent,ntd,id0,nxh,nyh,kxp,modesxd,modesyd,jblok, &
&iud,ndrec,fdname)
if (ntd > 0) then
if (id0==0) then
ceng = zero
write (iudm,pden2d,iostat=irc)
endif
endif
! velocity diagnostics
fname = 'fv2.'//cdrun
call initveldiag(fv,fvm,vtx,vty,vtz,ntv,ndv,id0,nmv,ndim,nblok,iuv&
&,fname)
if (movion==1) then
fname = 'fvi2.'//cdrun
call initveldiag(fvi,fvmi,vtxi,vtyi,vtzi,ntv,ndv,id0,nmv,ndim, &
&nblok,iuvi,fname)
endif
! potential diagnostics
call initmodediag(pott,ntp,id0,nxh,nyh,kxp,modesxp,modesyp,jblok, &
&iup,nprec,fpname)
if (ntp > 0) then
if (id0==0) then
ceng = affp
write (iudm,ppot2d,iostat=irc)
endif
endif
! vector potential, ion current or electromagnetic diagnostics
if ((nta > 0) .or. (nda > 0) .or. (ntj > 0) .or. (ndj > 0) .or. &
&(nte > 0) .or. (nde > 0)) then
allocate(vfield(ndim,nxe,nypmx*kbmin,kblok))
allocate(vfieldt(ndim,nyv,kxp,jblok))
vfield = 0.0
endif
! vector potential diagnostics
call initvmodediag(vpott,nta,id0,nxh,nyh,kxp,ndim,modesxa,modesya,&
&jblok,iua,narec,faname)
if (nta > 0) then
if (id0==0) then
ceng = affp
write (iudm,pvpot2d,iostat=irc)
endif
endif
! ion current diagnostics
call initvmodediag(vcurt,ntj,id0,nxh,nyh,kxp,ndim,modesxj,modesyj,&
&jblok,iuj,njrec,fjname)
if (ntj > 0) then
allocate(cui(3,nxe,nypmx*kbmin,kblok))
allocate(cutt(3,nxe,nypmx*kbmin,kblok))
cui = 0.0; cutt = 0.0
if (id0==0) then
ceng = zero
write (iudm,pvcur2d,iostat=irc)
endif
endif
! electromagnetic diagnostics
call initvmodediag(vpotr,nte,id0,nxh,nyh,kxp,ndim,modesxe,modesye,&
&jblok,iue,nerec,fename)
if (nte > 0) then
if (id0==0) then
ceng = zero
write (iudm,pem2d,iostat=irc)
endif
endif
! momentum diagnostics
fname = 'pmomentum2.'//cdrun
if (ntm > 0) then
if (id0==0) then
ium = get_funit(ium)
open(unit=ium,file=trim(fname),form='formatted',status= &
&'unknown')
endif
endif
! write out and close input file
if (id0==0) then
write (iudm,pinput2,iostat=irc)
close(unit=iudm)
endif
! record time
call pwtimer(time,dtime)
! send initial CPU Time to diagnostic nodes
msg(1) = time(1); msg(2) = time(2)
call HARTBEAT(msg,2)
call wtimer(tloop,ldtime,-1)
if (id0==0) then
write (iuot,*) 'init max/min real time=',time(1),time(2), 'sec'
endif
write (iuer,*) 'Info: Initialization Complete'
!
! * * * start main iteration loop * * *
!
500 if (nloop <= ntime) go to 2000
! send time step to diagnostic nodes
msg(1) = ntime
call HARTBEAT(msg,1)
if (id0==0) write (iuot,991) ntime
write (label,991) ntime
call LOGNAME(label)
!
! electromagnetic diagnostic
call vpotdiagprep(cut,vfieldt,nte,nde,ntime-1)
! initialize current density to background
call sguard(cu,nyp,zero,zero,zero,nx,inorder)
! deposit electron current
call djpostg(part,cu,npp,noff,qme,dth,ci,tdjpost,nx,ny,ipbc, &
&relativity,inorder,djopt)
! move electrons into appropriate spatial regions
! call pmove(part,edges,npp,tmove,ny,kstrt,nvp,nbmax,vect,ierr)
call pmoves(part,edges,npp,tmove,ny,kstrt,nvp,nbmax,vect,ierr)
! deposit electron charge density
call dpostg(part,qe,npp,noff,nyp,kstrt,nvp,nx,kyp,ngds,qme,tdpost,&
&inorder,dopt)
! save electron current for ion current diagnostic
call vpotrdiagprep(cu,cutt,ntj,ndj,ntime)
! add ion current and deposit ion charge density
if (movion==1) then
call djpostg(parti,cu,nppi,noff,qmi,dth,ci,tdjposti,nx,ny,ipbc,&
&relativity,inorder,djopt)
! move ions into appropriate spatial regions
! call pmove(parti,edges,nppi,tmovi,ny,kstrt,nvp,nbmax,vect,ierr)
call pmoves(parti,edges,nppi,tmovi,ny,kstrt,nvp,nbmax,vect,ierr&
&)
call dpostg(parti,qi,nppi,noff,nyp,kstrt,nvp,nx,kyp,ngds,qmi, &
&tdposti,inorder,dopt)
! freeze the ions
if (ntime==ionoff) then
deallocate(parti,nppi)
movion = 0
endif
endif
! save ion current
call vpotrdiagprep(cu,cutt,ntj,ndj,ntime,diff=.true.)
! add guard cells for current in x direction
call aguard(cu,nyp,nx,inorder)
! add guard cells for current in y direction
call paguard(cu,kstrt,nvp,nx,kyp,ngds)
! add electron and ion densities
call addqei(qe,qi,nyp,nx,inorder)
! ion density diagnostic
call dendiag(qt,qi,sfield,dent,sfieldt,ffc,nyp,mixup,sct,tfft,ntd,&
&ndd,nx,ny,modesxd,modesyd,iud,ndrec,indx,indy,ntime,nvp,kstrt,kxp,&
&kyp,ndstyle,irc,inorder)
if (irc==1) go to 2000
! velocity diagnostic
call veldiag(part,fv,fvm,npp,msg,ntv,ndv,id0,nmv,iuv,ntime, &
&' ELECTRON',irc)
if (irc==1) go to 2000
if (movion==1) then
call veldiag(parti,fvi,fvmi,nppi,msg,ntv,ndv,id0,nmv,iuvi,ntime&
&,' ION',irc)
if (irc==1) go to 2000
endif
! phase space diagnostic
fname = ' ELECTRON PHASE SPACE'
call phasediag(part,npp,nts,nds,nx,ny,ntime,fname,irc)
if (irc==1) go to 2000
if (movion==1) then
fname = ' ION PHASE SPACE'
call phasediag(parti,nppi,nts,nds,nx,ny,ntime,fname,irc)
if (irc==1) go to 2000
endif
! transform charge to fourier space
isign = -1
call fft(qe,qt,isign,mixup,sct,tfft,indx,indy,kstrt,kyp,inorder)
! potential diagnostic
call potdiag(qt,sfield,pott,sfieldt,ffc,nyp,mixup,sct,tfft,ntp,ndp&
&,nx,ny,modesxp,modesyp,iup,nprec,indx,indy,ntime,nvp,kstrt,kxp,kyp&
&,ndstyle,irc,inorder)
if (irc==1) go to 2000
! transform current to fourier space
isign = -1
call fft(cu,cut,isign,mixup,sct,tfft,indx,indy,kstrt,kyp,inorder)
! take transverse part of current
call cuperp(cut,nx,ny,kstrt)
! electromagnetic diagnostic
call vpotrdiag(bxyz,cut,vfield,vpotr,vfieldt,ffc,nyp,mixup,sct, &
&tfft,affp,ci,nte,nde,nx,ny,modesxe,modesye,iue,nerec,indx,indy, &
&ntime,nvp,kstrt,kxp,kyp,ndstyle,irc,inorder)
if (irc==1) go to 2000
! ion current diagnostic
call avcurdiag(cutt,cui,fxyt,vfield,vcurt,vfieldt,ffc,nyp,mixup, &
&sct,tfft,ntj,ndj,nx,ny,modesxj,modesyj,iuj,njrec,indx,indy,ntime, &
&nvp,kstrt,kxp,kyp,ngds,ndstyle,irc,inorder)
if (irc==1) go to 2000
! calculate electromagnetic fields in fourier space
if (ntime==0) then
! calculate initial darwin magnetic field
call ibpois(cut,bxyz,ffc,ci,wm,nx,ny,kstrt)
wf = 0.
! calculate initial darwin electric field
allocate(amu(4,nxe,nypmx*kbmin,kblok),amut(4,nyv,kxp,jblok))
allocate(ffe(nyh,kxp,jblok))
! deposit momentum flux
call sguard(amu,nyp,zero,zero,zero,zero,nx,inorder)
call dmjpostg(part,amu,npp,noff,qme,ci,ts,relativity,inorder, &
&djopt)
if (movion==1) then
call dmjpostg(parti,amu,nppi,noff,qmi,ci,ts,relativity, &
&inorder,djopt)
endif
call amcguard(amu,nyp,nx,inorder)
call pamcguard(amu,kstrt,nvp,nx,kyp,ngds)
! solve for darwin electric field
isign = -1
call fftn(amu,amut,isign,mixup,sct,tfft,indx,indy,kstrt,kyp, &
&inorder)
bxyt = cut
call dcuperp(bxyt,amut,nx,ny,kstrt)
call epois_init(ffe,ax,ay,affp,wp0,ci,nx,ny,kstrt)
call iepois(bxyt,exyz,ffe,affp,ci,wf,tfield,nx,ny,kstrt)
deallocate(amu,amut,ffe)
dth = .5*dt
! calculate electromagnetic fields
else
call maxwel(exyz,bxyz,cut,ffc,affp,ci,dt,wf,wm,tfield,nx,ny, &
&kstrt)
endif
! vector potential diagnostic
call avpotdiag(bxyz,vfield,vpott,vfieldt,nyp,mixup,sct,tfft,nta, &
&nda,nx,ny,modesxa,modesya,iua,narec,indx,indy,ntime,nvp,kstrt,kxp,&
&kyp,ndstyle,irc,inorder)
if (irc==1) go to 2000
! calculate longitudinal electric field in fourier space
call pois3(qt,fxyt,ffc,we,tfield,nx,ny,kstrt)
! add longitudinal and transverse electric fields
isign = 1
call emfield(fxyt,exyz,ffc,isign,nx,ny,kstrt)
! copy magnetic field
isign = -1
call emfield(bxyt,bxyz,ffc,isign,nx,ny,kstrt)
! transform force/charge to real space
isign = 1
call fft(fxyze,fxyt,isign,mixup,sct,tfft,indx,indy,kstrt,kyp, &
&inorder)
! copy data from field to particle partition, and copy to guard cells
call pcguard(fxyze,kstrt,nvp,kyp,inorder)
call cguard(fxyze,nyp,nx,inorder)
! transform magnetic field to real space
isign = 1
call fft(bxyze,bxyt,isign,mixup,sct,tfft,indx,indy,kstrt,kyp, &
&inorder)
if (omt > 0) call baddext(bxyze,nyp,omx,omy,omz,nx,inorder)
! copy data from field to particle partition, and copy to guard cells
call pcguard(bxyze,kstrt,nvp,kyp,inorder)
call cguard(bxyze,nyp,nx,inorder)
! external pump
! if ((itpon > 0).and.(ntime >= itpon)) then
! etx = (v0*vtx)*w0*cos(w0*dt*(ntime - itpon))
! fxyze(1,:,:,:) = fxyze(1,:,:,:) + etx
! endif
! particle push and charge density update
wke = 0.
! push electrons
call push3g(part,fxyze,bxyze,npp,noff,qbme,dt,dth,ci,wke,tpush,nx,&
&ny,ipbc,relativity,inorder,popt)
! move electrons into appropriate spatial regions
! call pmove(part,edges,npp,tmove,ny,kstrt,nvp,nbmax,vect,ierr)
call pmoves(part,edges,npp,tmove,ny,kstrt,nvp,nbmax,vect,ierr)
! push ions
if (movion==1) then
wki = 0.
call push3g(parti,fxyze,bxyze,nppi,noff,qbmi,dt,dth,ci,wki, &
&tpushi,nx,ny,ipbc,relativity,inorder,popt)
wki = wki*rmass
! move ions into appropriate spatial regions
! call pmove(parti,edges,nppi,tmovi,ny,kstrt,nvp,nbmax,vect,ierr)
call pmoves(parti,edges,nppi,tmovi,ny,kstrt,nvp,nbmax,vect,ierr&
&)
endif
! calculate electron momentum
call fmomtdiag(part,qt,ffc,exyz,bxyz,npp,msg,affp,pxe,pye,pze,sx, &
&sy,sz,wx,wy,wz,ntm,id0,ium,kstrt,nx,ny,ntime)
! calculate ion and total momentum
call imomtdiag(parti,qi,fxyze,nppi,nyp,msg,dt,rmass,pxi,pyi,pzi,wx&
&,wy,wz,ntm,movion,id0,ium,nx,ntime,ndim,inorder)
! sort electrons
if (sortime > 0) then
if (mod(ntime,sortime)==0) then
! call sortp(part,pt,ip,npp,noff,nyp,npic,tsort,inorder)
call sortp(part,part2,npp,noff,nyp,npic,tsort,inorder)
endif
endif
! sort ions
if ((movion==1) .and. (sortimi > 0)) then
if (mod(ntime,sortimi)==0) then
call sortp(parti,pt,ip,nppi,noff,nyp,npic,tsorti,inorder)
! call sortp(parti,parti2,nppi,noff,nyp,npic,tsorti,inorder)
endif
endif
! energy diagnostic
call emenergy(wt,wtot,msg,we,wf,wm,wke,wki,ntw,ndw,id0,itw,iuot, &
&ntime)
itime = itime + 1
ntime = itime + itime0
! restart file
if (ntr > 0) then
it = ntime/ntr
if (ntime==ntr*it) then
it = iur1 + mod(it-1,2)*(iur2 - iur1)
! write file
call restart_bwrite(it,id0,itime,itime0,nvp,npp,part,movion,&
&nppi,parti,qi,ef=exyz,bf=bxyz)
call restart_dwrite(it,id0,itime,itw,wt,ndrec,fdname,nprec, &
&fpname,narec,faname,njrec,fjname,nerec,fename)
endif
endif
call wtimer(tloop,ldtime)
ltime = ltime + tloop
go to 500
2000 continue
!
! * * * end main iteration loop * * *
!
! send QUIT message to diagnostic nodes
msg = -1.
call HARTBEAT(msg,1)
! energy diagnostic
if (ndw > 0) then
ts = t0 + dt*real(ndw)*(itime0-(itime0/ndw)*ndw)
call displayw(wt,ts,dt*real(ndw),itw,irc)
! check error return code
if (irc==1) go to 3000
endif
call pwtimer(time,dtime)
! send main CPU Time to diagnostic nodes
msg(1:2) = time; msg(3) = tpush; msg(4) = tdpost; msg(5) = tdjpost
msg(6) = tsort; msg(7:8) = tmove; msg(9:10) = tfft
msg(11) = tfield; msg(12) = ltime
call HARTBEAT(msg,12)
if (id0==0) then
write (iuot,*) 'processor partition used: nvp = ', nvp
write (iuot,*) ncpus, ' processors found, ', ntasks+1, ' used'
write (iuot,*) 'main max/min real time=',time(1),time(2), 'sec'
totpush = tpush + tdpost + tdjpost
write (iuot,*) 'electron push time=', tpush, 'sec'
write (iuot,*) 'electron charge deposit time=', tdpost, 'sec'
write (iuot,*) 'electron current deposit time = ', tdjpost, &
&'sec'
write (iuot,*) 'total electron push time=', totpush, 'sec'
write (iuot,*) 'electron sort time=', tsort, 'sec'
write (iuot,*) 'electron move time=', tmove, 'sec'
totpush = totpush + tsort + tmove(1)
write (iuot,*) 'total electron time=', totpush, 'sec'
endif
if (movion==1) then
msg(1) = tpushi; msg(2) = tdposti; msg(3) = tdjposti
msg(4) = tsorti; msg(5:6) = tmovi
call HARTBEAT(msg,6)
if (id0==0) then
totpushi = tpushi + tdposti + tdjposti
write (iuot,*) 'ion push time=', tpushi, 'sec'
write (iuot,*) 'ion charge deposit time=', tdposti, 'sec'
write (iuot,*) 'ion current deposit time = ',tdjposti, 'sec'
write (iuot,*) 'total ion push time=', totpushi, 'sec'
write (iuot,*) 'ion sort time=', tsorti
write (iuot,*) 'ion move time=', tmovi
totpushi = totpushi + tsorti + tmovi(1)
write (iuot,*) 'total ion time=', totpushi, 'sec'
endif
endif
if (id0==0) then
write (iuot,*) 'total fft time=', tfft, 'sec'
write (iuot,*) 'field time=', tfield
time(1) = time(1) - (totpush + totpushi + tfft(1) + tfield)
write (iuot,*) 'other time=', time(1), ltime, 'sec'
! write final diagnostic metafile
fname = 'pdiag2.'//cdrun
open(unit=iudm,file=trim(fname),form='formatted',status= &
&'replace')
! ion density diagnostics
if (ntd > 0) then
ndrec = ndrec - 1
ceng = zero
write (iudm,pden2d,iostat=irc)
if (irc /= 0) write (iuer,*) 'pden2d namelist not written'
endif
! potential diagnostics
if (ntp > 0) then
nprec = nprec - 1
ceng = affp
write (iudm,ppot2d,iostat=irc)
if (irc /= 0) write (iuer,*) 'ppot2d namelist not written'
endif
! vector potential diagnostics
if (nta > 0) then
narec = narec - 1
ceng = affp
write (iudm,pvpot2d,iostat=irc)
if (irc /= 0) write (iuer,*) 'pvpot2d namelist not written'
endif
! ion current diagnostics
if (ntj > 0) then
njrec = njrec - 1
ceng = zero
write (iudm,pvcur2d,iostat=irc)
if (irc /= 0) write (iuer,*) 'pvcur2d namelist not written'
endif
! electromagnetic diagnostics
if (nte > 0) then
nerec = nerec - 1
ceng = affp
write (iudm,pem2d,iostat=irc)
if (irc /= 0) write (iuer,*) 'pem2d namelist not written'
endif
! write out input file
write (iudm,pinput2,iostat=irc)
if (irc /= 0) write (iuer,*) 'pinput2 namelist not written'
! done
write (iuot,*) '* * * q.e.d. * * *'
close(unit=iudm)
close(unit=iuot)
close(unit=iuer)
endif
! close graphics device
3000 call PGRCLOSE
call MP_END
call PPEXIT
stop
!
contains
!
subroutine diag2nodes
implicit none
integer :: j, k, jt, nt
! diagnostic nodes have special processing
991 format (' T = ',i7)
992 format (' field, kinetic, total energies = ',3e14.7)
993 format (' electric(l,t), magnetic energies = ',3e14.7)
994 format (' electron momentum = ',3e14.7)
995 format (' ion momentum = ',3e14.7)
996 format (' field momentum = ',3e14.7)
997 format (' total momentum = ',3e14.7)
! allocate data for restart and/or phase space diagnostic
if ((nts > 0) .or. (nustrt /= 1) .or. (ntr > 0)) then
allocate(part(idimp,max(npmax,npimax),nblok))
allocate(npp(nblok))
parti => part
nppi => npp
endif
if (movion==0) then
allocate(qi(nxe,nypmx*kbmin,kblok))
else
allocate(qi(0,0,0))
endif
if ((nustrt /= 1).or.(ntr > 0)) then
allocate(exyz(3,nyv,kxp,jblok),bxyz(3,nyv,kxp,jblok))
endif
if ((ndp > 0) .or. (ndd > 0)) then
allocate(sfield(nxe,nypmx*kbmin,kblok))
endif
if ((nda > 0) .or. (ndj > 0) .or. (nde > 0)) then
allocate(vfield(ndim,nxe,nypmx*kbmin,kblok))
vfield = 0.0
endif
! restart
if (nustrt /= 1) then
it = 0
call restart_bread(iur1,iur2,id0,it,itime,itime0,nvp,npp, &
&part,movion,nppi,parti,qi,irc,iuer,ef=exyz,bf=bxyz)
if (irc /= 0) go to 30
! extend run
if (nustrt==0) then
itime0 = itime + itime0
t0 = dt*real(itime0)
itime = 0
if (id0==0) then
if (iur1 >= 0) close (unit=iur1)
if (iur2 >= 0) close (unit=iur2)
call restart_open(1,ntr,idrun,iur1,iur2,iuer)
endif
go to 40
endif
! read diagnostics
call restart_dread(it,id0,itime,itw,wt,iud,ndrec,fdname,iup,&
&nprec,fpname,irc,iuer,iua,narec,faname,iuj,njrec,fjname,iue,nerec,&
&fename)
if (irc /= 0) go to 30
t0 = dt*real(itime0)
if (id0==0) rewind it
go to 40
! handle error
30 if (id0==0) then
write (iuer,*) 'Restart Error, irc = ', irc
endif
call PGRCLOSE
call MP_END
call PPEXIT
stop
endif
! initialize diagnostics
40 if (id0==0) then
iudm = get_funit(iudm)
fname = 'pdiag2.init.'//cdrun
open(unit=iudm,file=trim(fname),form='formatted',status= &
&'replace')
endif