/
df_ccsd.cc
929 lines (796 loc) · 35.2 KB
/
df_ccsd.cc
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/*
* @BEGIN LICENSE
*
* Psi4: an open-source quantum chemistry software package
*
* Copyright (c) 2007-2018 The Psi4 Developers.
*
* The copyrights for code used from other parties are included in
* the corresponding files.
*
* This file is part of Psi4.
*
* Psi4 is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, version 3.
*
* Psi4 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along
* with Psi4; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* @END LICENSE
*/
#include "psi4/psi4-dec.h"
#include "psi4/times.h"
#include "psi4/libmints/vector.h"
#include "psi4/libmints/matrix.h"
#include "psi4/libmints/wavefunction.h"
#include "psi4/libqt/qt.h"
#include "psi4/libciomr/libciomr.h"
#include "psi4/libmints/mintshelper.h"
#include <ctime>
#ifdef _OPENMP
#include <omp.h>
#else
#define omp_get_wtime() 0.0
#endif
#include "blas.h"
#include "ccsd.h"
#include "psi4/libmints/basisset.h"
#include "psi4/lib3index/3index.h"
using namespace psi;
namespace psi {
namespace fnocc {
// diagrams for mp3 and mp4
void DefineLinearTasks();
void DefineQuadraticTasks();
// coupled cluster constructor
DFCoupledCluster::DFCoupledCluster(SharedWavefunction ref_wfn, Options &options) : CoupledCluster(ref_wfn, options) {
common_init();
}
DFCoupledCluster::~DFCoupledCluster() {}
double DFCoupledCluster::compute_energy() {
PsiReturnType status = Success;
// WriteBanner();
AllocateMemory();
timer_on("FNOCC: CCSD");
status = CCSDIterations();
timer_off("FNOCC: CCSD");
// free some memory!
free(Fij);
free(Fab);
free(Abij);
free(Sbij);
free(integrals);
free(w1);
free(I1);
free(I1p);
free(diisvec);
free(tempt);
free(tempv);
// tstart in fnocc
tstop();
// mp2 energy
Process::environment.globals["MP2 CORRELATION ENERGY"] = emp2;
Process::environment.globals["MP2 TOTAL ENERGY"] = emp2 + escf;
Process::environment.globals["MP2 OPPOSITE-SPIN CORRELATION ENERGY"] = emp2_os;
Process::environment.globals["MP2 SAME-SPIN CORRELATION ENERGY"] = emp2_ss;
// ccsd energy
Process::environment.globals["CCSD CORRELATION ENERGY"] = eccsd;
Process::environment.globals["CCSD OPPOSITE-SPIN CORRELATION ENERGY"] = eccsd_os;
Process::environment.globals["CCSD SAME-SPIN CORRELATION ENERGY"] = eccsd_ss;
Process::environment.globals["CCSD TOTAL ENERGY"] = eccsd + escf;
Process::environment.globals["CURRENT ENERGY"] = eccsd + escf;
/* updates the wavefunction for checkpointing */
energy_ = Process::environment.globals["CCSD TOTAL ENERGY"];
name_ = "DF-CCSD";
if (options_.get_bool("COMPUTE_TRIPLES")) {
long int o = ndoccact;
long int v = nvirt;
if (!isLowMemory) {
// write (ov|vv) integrals, formerly E2abci, for (t)
double *tempq = (double *)malloc(v * nQ * sizeof(double));
// the buffer integrals was at least 2v^3, so these should definitely fit.
double *Z = (double *)malloc(v * v * v * sizeof(double));
double *Z2 = (double *)malloc(v * v * v * sizeof(double));
auto psio = std::make_shared<PSIO>();
psio->open(PSIF_DCC_ABCI, PSIO_OPEN_NEW);
psio_address addr2 = PSIO_ZERO;
for (long int i = 0; i < o; i++) {
#pragma omp parallel for schedule(static)
for (long int q = 0; q < nQ; q++) {
for (long int b = 0; b < v; b++) {
tempq[q * v + b] = Qov[q * o * v + i * v + b];
}
}
F_DGEMM('n', 't', v, v * v, nQ, 1.0, tempq, v, Qvv, v * v, 0.0, &Z[0], v);
#pragma omp parallel for schedule(static)
for (long int a = 0; a < v; a++) {
for (long int b = 0; b < v; b++) {
for (long int c = 0; c < v; c++) {
Z2[a * v * v + b * v + c] = Z[a * v * v + c * v + b];
}
}
}
psio->write(PSIF_DCC_ABCI, "E2abci", (char *)&Z2[0], v * v * v * sizeof(double), addr2, &addr2);
}
psio->close(PSIF_DCC_ABCI, 1);
free(tempq);
free(Z);
free(Z2);
} else {
psio_address addr = PSIO_ZERO;
double *temp1 = (double *)malloc((nQ * v > o * v * v ? nQ * v : o * v * v) * sizeof(double));
double *temp2 = (double *)malloc(o * v * v * sizeof(double));
auto psio = std::make_shared<PSIO>();
psio->open(PSIF_DCC_ABCI4, PSIO_OPEN_NEW);
for (long int a = 0; a < v; a++) {
#pragma omp parallel for schedule(static)
for (long int q = 0; q < nQ; q++) {
for (long int c = 0; c < v; c++) {
temp1[q * v + c] = Qvv[q * v * v + a * v + c];
}
}
F_DGEMM('n', 't', o * v, v, nQ, 1.0, Qov, o * v, temp1, v, 0.0, temp2, o * v);
#pragma omp parallel for schedule(static)
for (long int b = 0; b < v; b++) {
for (long int i = 0; i < o; i++) {
for (long int c = 0; c < v; c++) {
temp1[b * o * v + i * v + c] = temp2[c * o * v + i * v + b];
}
}
}
psio->write(PSIF_DCC_ABCI4, "E2abci4", (char *)&temp1[0], o * v * v * sizeof(double), addr, &addr);
}
psio->close(PSIF_DCC_ABCI4, 1);
free(temp1);
free(temp2);
}
free(Qvv);
double *temp1 = (double *)malloc(o * o * v * v * sizeof(double));
double *temp2 = (double *)malloc(o * o * v * v * sizeof(double));
// write (oo|ov) integrals, formerly E2ijak, for (t)
F_DGEMM('n', 't', o * o, o * v, nQ, 1.0, Qoo, o * o, Qov, o * v, 0.0, temp1, o * o);
for (long int i = 0; i < o; i++) {
for (long int j = 0; j < o; j++) {
for (long int k = 0; k < o; k++) {
for (long int a = 0; a < v; a++) {
temp2[j * o * o * v + i * o * v + k * v + a] = temp1[i * o * o * v + a * o * o + j * o + k];
}
}
}
}
auto psio = std::make_shared<PSIO>();
psio->open(PSIF_DCC_IJAK, PSIO_OPEN_NEW);
psio->write_entry(PSIF_DCC_IJAK, "E2ijak", (char *)&temp2[0], o * o * o * v * sizeof(double));
psio->close(PSIF_DCC_IJAK, 1);
// df (ov|ov) integrals, formerly E2klcd
F_DGEMM('n', 't', o * v, o * v, nQ, 1.0, Qov, o * v, Qov, o * v, 0.0, temp1, o * v);
psio->open(PSIF_DCC_IAJB, PSIO_OPEN_NEW);
psio->write_entry(PSIF_DCC_IAJB, "E2iajb", (char *)&temp1[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_IAJB, 1);
free(Qov);
free(Qoo);
free(temp1);
free(temp2);
// triples
// now there should be space for t2
if (t2_on_disk) {
tb = (double *)malloc(o * o * v * v * sizeof(double));
psio->open(PSIF_DCC_T2, PSIO_OPEN_OLD);
psio->read_entry(PSIF_DCC_T2, "t2", (char *)&tb[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_T2, 1);
}
tstart();
ccmethod = 0;
if (isLowMemory) {
timer_on("FNOCC: triples");
status = lowmemory_triples();
timer_off("FNOCC: triples");
} else {
timer_on("FNOCC: triples");
status = triples();
timer_off("FNOCC: triples");
}
if (status == Failure) {
throw PsiException("Whoops, the (T) correction died.", __FILE__, __LINE__);
}
tstop();
// if we allocated t2 just for triples, free it
if (t2_on_disk) {
free(tb);
}
// ccsd(t) energy
Process::environment.globals["(T) CORRECTION ENERGY"] = et;
Process::environment.globals["CCSD(T) CORRELATION ENERGY"] = eccsd + et;
Process::environment.globals["CCSD(T) TOTAL ENERGY"] = eccsd + et + escf;
Process::environment.globals["CURRENT ENERGY"] = eccsd + et + escf;
} else {
free(Qoo);
free(Qov);
free(Qvv);
}
// free remaining memory
free(Fia);
free(Fai);
free(t1);
if (!t2_on_disk) {
free(tb);
}
return Process::environment.globals["CURRENT ENERGY"];
}
void DFCoupledCluster::WriteBanner() {
outfile->Printf("\n\n");
outfile->Printf(" *******************************************************\n");
outfile->Printf(" * *\n");
outfile->Printf(" * DF-CCSD *\n");
outfile->Printf(" * Density-fitted CCSD *\n");
outfile->Printf(" * *\n");
outfile->Printf(" * Eugene DePrince *\n");
outfile->Printf(" * *\n");
outfile->Printf(" *******************************************************\n");
outfile->Printf("\n\n");
}
/*===================================================================
solve ccsd equations
===================================================================*/
PsiReturnType DFCoupledCluster::CCSDIterations() {
long int o = ndoccact;
long int v = nvirt;
// int iter = 0;
iter = 0;
int diis_iter = 0;
int replace_diis_iter = 1;
double nrm = 1.0;
double Eold = 1.0e9;
if (brueckner_iter == 0) eccsd = 0.0;
auto psio = std::make_shared<PSIO>();
psio_address addr;
// zero residual
psio->open(PSIF_DCC_R2, PSIO_OPEN_NEW);
memset((void *)tempt, '\0', o * o * v * v * sizeof(double));
psio->write_entry(PSIF_DCC_R2, "residual", (char *)&tempt[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_R2, 1);
// start timing the iterations
const long clk_tck = sysconf(_SC_CLK_TCK);
struct tms total_tmstime;
times(&total_tmstime);
time_t time_start = time(nullptr);
double user_start = ((double)total_tmstime.tms_utime) / clk_tck;
double sys_start = ((double)total_tmstime.tms_stime) / clk_tck;
bool timer = options_.get_bool("CC_TIMINGS");
memset((void *)Fij, '\0', o * o * sizeof(double));
memset((void *)Fia, '\0', o * v * sizeof(double));
memset((void *)Fai, '\0', o * v * sizeof(double));
memset((void *)Fab, '\0', v * v * sizeof(double));
T1Fock();
T1Integrals();
outfile->Printf("\n");
outfile->Printf(" Begin singles and doubles coupled cluster iterations\n\n");
outfile->Printf(" Iter DIIS Energy d(Energy) |d(T)| time\n");
memset((void *)diisvec, '\0', (maxdiis + 1) * sizeof(double));
while (iter < maxiter) {
time_t iter_start = time(nullptr);
// evaluate cc diagrams
memset((void *)w1, '\0', o * v * sizeof(double));
if (iter > 0 || brueckner_iter > 0) {
CCResidual();
}
// update the amplitudes
UpdateT2();
UpdateT1();
// add vector to list for diis
DIISOldVector(iter, diis_iter, replace_diis_iter);
// diis error vector and convergence check
nrm = DIISErrorVector(diis_iter, replace_diis_iter, iter);
// diis extrapolation
if (diis_iter > 2) {
if (diis_iter < maxdiis)
DIIS(diisvec, diis_iter, o * o * v * v + o * v, replace_diis_iter);
else
DIIS(diisvec, maxdiis, o * o * v * v + o * v, replace_diis_iter);
DIISNewAmplitudes(diis_iter, replace_diis_iter);
}
double start;
if (timer) start = omp_get_wtime();
T1Fock();
T1Integrals();
if (timer) {
outfile->Printf(" T1-transformed integrals %6.2lf\n",
omp_get_wtime() - start);
outfile->Printf("\n");
}
Eold = eccsd;
eccsd = CheckEnergy();
// if (diis_iter < maxdiis ) {
// replace_diis_iter++;
//}else {
// double min = 1.0e9;
// for (int j = 1; j <= (diis_iter < maxdiis ? diis_iter : maxdiis); j++) {
// if ( std::fabs( diisvec[j-1] ) < min ) {
// min = std::fabs( diisvec[j-1] );
// replace_diis_iter = j;
// }
// }
//}
if (diis_iter <= maxdiis)
diis_iter++;
else if (replace_diis_iter < maxdiis)
replace_diis_iter++;
else
replace_diis_iter = 1;
time_t iter_stop = time(nullptr);
outfile->Printf(" %5i %i %i %15.10f %15.10f %15.10f %8d\n", iter, diis_iter - 1, replace_diis_iter, eccsd,
eccsd - Eold, nrm, (int)iter_stop - (int)iter_start);
iter++;
if (iter == 1) {
emp2 = eccsd;
SCS_MP2();
}
// energy and amplitude convergence check
if (std::fabs(eccsd - Eold) < e_conv && nrm < r_conv) break;
}
times(&total_tmstime);
time_t time_stop = time(nullptr);
double user_stop = ((double)total_tmstime.tms_utime) / clk_tck;
double sys_stop = ((double)total_tmstime.tms_stime) / clk_tck;
if (iter == maxiter) {
throw PsiException(" CCSD iterations did not converge.", __FILE__, __LINE__);
}
SCS_CCSD();
outfile->Printf("\n");
outfile->Printf(" CCSD iterations converged!\n");
outfile->Printf("\n");
// T1 and D1 diagnostics:
double t1diag = C_DNRM2(o * v, t1, 1) / sqrt(2.0 * o);
outfile->Printf(" T1 diagnostic: %20.12lf\n", t1diag);
// add T1 diagnostic to globals
Process::environment.globals["CC T1 DIAGNOSTIC"] = t1diag;
auto T = std::make_shared<Matrix>(o, o);
auto eigvec = std::make_shared<Matrix>(o, o);
auto eigval = std::make_shared<Vector>(o);
double **Tp = T->pointer();
for (long int i = 0; i < o; i++) {
for (long int j = 0; j < o; j++) {
double dum = 0.0;
for (long int a = 0; a < v; a++) {
dum += t1[a * o + i] * t1[a * o + j];
}
Tp[i][j] = dum;
}
}
T->diagonalize(eigvec, eigval, descending);
outfile->Printf(" D1 diagnostic: %20.12lf\n", sqrt(eigval->pointer()[0]));
outfile->Printf("\n");
// add D1 diagnostic to globals
Process::environment.globals["CC D1 DIAGNOSTIC"] = sqrt(eigval->pointer()[0]);
// delta mp2 correction for fno computations:
if (options_.get_bool("NAT_ORBS")) {
double delta_emp2 = Process::environment.globals["MP2 CORRELATION ENERGY"] - emp2;
double delta_emp2_os = Process::environment.globals["MP2 OPPOSITE-SPIN CORRELATION ENERGY"] - emp2_os;
double delta_emp2_ss = Process::environment.globals["MP2 SAME-SPIN CORRELATION ENERGY"] - emp2_ss;
emp2 += delta_emp2;
emp2_os += delta_emp2_os;
emp2_ss += delta_emp2_ss;
eccsd += delta_emp2;
eccsd_os += delta_emp2_os;
eccsd_ss += delta_emp2_ss;
outfile->Printf(" OS MP2 FNO correction: %20.12lf\n", delta_emp2_os);
outfile->Printf(" SS MP2 FNO correction: %20.12lf\n", delta_emp2_ss);
outfile->Printf(" MP2 FNO correction: %20.12lf\n", delta_emp2);
outfile->Printf("\n");
}
if (options_.get_bool("SCS_MP2")) {
outfile->Printf(" OS SCS-MP2 correlation energy: %20.12lf\n", emp2_os * emp2_os_fac);
outfile->Printf(" SS SCS-MP2 correlation energy: %20.12lf\n", emp2_ss * emp2_ss_fac);
outfile->Printf(" SCS-MP2 correlation energy: %20.12lf\n",
emp2_os * emp2_os_fac + emp2_ss * emp2_ss_fac);
outfile->Printf(" * SCS-MP2 total energy: %20.12lf\n",
emp2_os * emp2_os_fac + emp2_ss * emp2_ss_fac + escf);
outfile->Printf("\n");
}
outfile->Printf(" OS MP2 correlation energy: %20.12lf\n", emp2_os);
outfile->Printf(" SS MP2 correlation energy: %20.12lf\n", emp2_ss);
outfile->Printf(" MP2 correlation energy: %20.12lf\n", emp2);
outfile->Printf(" * MP2 total energy: %20.12lf\n", emp2 + escf);
outfile->Printf("\n");
if (options_.get_bool("SCS_CCSD")) {
outfile->Printf(" OS SCS-CCSD correlation energy: %20.12lf\n", eccsd_os * eccsd_os_fac);
outfile->Printf(" SS SCS-CCSD correlation energy: %20.12lf\n", eccsd_ss * eccsd_ss_fac);
outfile->Printf(" SCS-CCSD correlation energy: %20.12lf\n",
eccsd_os * eccsd_os_fac + eccsd_ss * eccsd_ss_fac);
outfile->Printf(" * SCS-CCSD total energy: %20.12lf\n",
eccsd_os * eccsd_os_fac + eccsd_ss * eccsd_ss_fac + escf);
outfile->Printf("\n");
}
outfile->Printf(" OS CCSD correlation energy: %20.12lf\n", eccsd_os);
outfile->Printf(" SS CCSD correlation energy: %20.12lf\n", eccsd_ss);
outfile->Printf(" CCSD correlation energy: %20.12lf\n", eccsd);
outfile->Printf(" * CCSD total energy: %20.12lf\n", eccsd + escf);
outfile->Printf("\n");
outfile->Printf(" Total time for CCSD iterations: %10.2lf s (user)\n", user_stop - user_start);
outfile->Printf(" %10.2lf s (system)\n", sys_stop - sys_start);
outfile->Printf(" %10d s (total)\n", (int)time_stop - (int)time_start);
outfile->Printf("\n");
outfile->Printf(" Time per iteration: %10.2lf s (user)\n", (user_stop - user_start) / (iter - 1));
outfile->Printf(" %10.2lf s (system)\n", (sys_stop - sys_start) / (iter - 1));
outfile->Printf(" %10.2lf s (total)\n",
((double)time_stop - (double)time_start) / (iter - 1));
if (options_.get_bool("COMPUTE_TRIPLES")) {
// need to generate non-t1-transformed 3-index integrals
C_DCOPY(o * v, t1, 1, w1, 1);
memset((void *)t1, '\0', o * v * sizeof(double));
T1Fock();
T1Integrals();
C_DCOPY(o * v, w1, 1, t1, 1);
}
return Success;
}
double DFCoupledCluster::CheckEnergy() {
long int v = nvirt;
long int o = ndoccact;
// df (ia|bj) formerly E2klcd
F_DGEMM('n', 't', o * v, o * v, nQ, 1.0, Qov, o * v, Qov, o * v, 0.0, integrals, o * v);
if (t2_on_disk) {
auto psio = std::make_shared<PSIO>();
psio->open(PSIF_DCC_T2, PSIO_OPEN_OLD);
psio->read_entry(PSIF_DCC_T2, "t2", (char *)&tempv[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_T2, 1);
tb = tempv;
}
double energy = 0.0;
for (long int a = 0; a < v; a++) {
for (long int b = 0; b < v; b++) {
for (long int i = 0; i < o; i++) {
for (long int j = 0; j < o; j++) {
long int ijab = a * v * o * o + b * o * o + i * o + j;
long int iajb = i * v * v * o + a * v * o + j * v + b;
long int jaib = j * v * v * o + a * v * o + i * v + b;
energy += (2.0 * integrals[iajb] - integrals[jaib]) * (tb[ijab] + t1[a * o + i] * t1[b * o + j]);
}
}
}
}
return energy;
}
/*===================================================================
allocate cpu memory
===================================================================*/
void DFCoupledCluster::AllocateMemory() {
if (nirrep_ > 1) {
throw PsiException("df_ccsd requires symmetry c1", __FILE__, __LINE__);
}
ischolesky_ = (options_.get_str("DF_BASIS_CC") == "CHOLESKY");
nQ = (int)Process::environment.globals["NAUX (CC)"];
nQ_scf = (int)Process::environment.globals["NAUX (SCF)"];
// orbital energies
int count = 0;
eps = (double *)malloc((ndoccact + nvirt) * sizeof(double));
std::shared_ptr<Vector> eps_test = reference_wavefunction_->epsilon_a();
for (int h = 0; h < nirrep_; h++) {
for (int norb = frzcpi_[h]; norb < doccpi_[h]; norb++) {
eps[count++] = eps_test->get(h, norb);
}
}
for (int h = 0; h < nirrep_; h++) {
for (int norb = doccpi_[h]; norb < nmopi_[h] - frzvpi_[h]; norb++) {
eps[count++] = eps_test->get(h, norb);
}
}
long int o = ndoccact;
long int v = nvirt;
/*========================================================
ccsd memory requirements:
tb: o^2v^2
tempt: o^2v^2+ov ( actually o(o+1)v(v+1) + ov )
tempv: max (o^2v^2+ov , o*v*nQ)
integrals: max(2v^3,nQ*nso^2, o^2v^2, 2v^3, 2nQ*o*v) (this is a minimum)
Abij (SJS v^4 result): o(o+1)v/2
Sbij (SJS v^4 result): o(o+1)v/2
other stuff: 2ov+2v^2+(o+v)
total: 3o^2v^2 + 2v^3 + o(o+1)v + 4ov + 2v^2 + (o+v) or
4o^2v^2 + o(o+1)v + 4ov + 2v^2 + (o+v) or
3o^2v^2 + 2ovnQ + o(o+1)v + 4ov + 2v^2 + (o+v)
compare to the requirements for the (T) part:
2o^2v^2 + 3v^3*nthreads + o^3v + ov
========================================================*/
// for the df version, the dimension of the large buffer:
long int nQmax = nQ > nQ_scf ? nQ : nQ_scf;
long int dim = 2L * v * v * v;
if (2 * nQmax * o * v > dim) dim = 2 * nQmax * o * v;
if (o * o * v * v > dim) dim = o * o * v * v;
if (nQmax * v * v > dim) dim = nQmax * v * v;
if (nQmax * nso * nso > dim) dim = nQmax * nso * nso;
long int tempvdim = o * o * v * v + o * v;
if (nQ * o * v > tempvdim) tempvdim = nQ * o * v;
if (nso * nso > tempvdim) tempvdim = nso * nso;
double total_memory =
dim + tempvdim + (o * (o + 1) * v * (v + 1) + o * v) + o * o * v * v + 2. * o * v + 2. * v * v;
long int max = nvirt * nvirt * nQmax > (nfzv + ndocc + nvirt) * ndocc * nQmax
? nvirt * nvirt * nQmax
: (nfzv + ndocc + nvirt) * ndocc * nQmax;
double df_memory = nQ * (o * o + o * v) + max;
total_memory *= 8. / 1024. / 1024.;
df_memory *= 8. / 1024. / 1024.;
double available_memory = (double)memory / 1024.0 / 1024.0;
double size_of_t2 = 8.0 * o * o * v * v / 1024.0 / 1024.0;
if (available_memory < total_memory + df_memory) {
if (available_memory > total_memory + df_memory - size_of_t2) {
outfile->Printf("\n");
outfile->Printf(" Warning: cannot accommodate T2 in core. T2 will be stored on disk.\n");
outfile->Printf("\n");
t2_on_disk = true;
} else {
outfile->Printf("\n");
outfile->Printf(" error: not enough memory for ccsd. increase available memory by %7.2lf mb\n",
total_memory + df_memory - size_of_t2 - available_memory);
outfile->Printf("\n");
throw PsiException("not enough memory (ccsd).", __FILE__, __LINE__);
}
}
outfile->Printf(" ==> Memory <==\n\n");
outfile->Printf(" Total memory available: %9.2lf mb\n", available_memory);
outfile->Printf("\n");
outfile->Printf(" CCSD memory requirements: %9.2lf mb\n",
df_memory + total_memory - size_of_t2 * t2_on_disk);
outfile->Printf(" 3-index integrals: %9.2lf mb\n", df_memory);
outfile->Printf(" CCSD intermediates: %9.2lf mb\n", total_memory - size_of_t2 * t2_on_disk);
if (options_.get_bool("COMPUTE_TRIPLES")) {
int nthreads = Process::environment.get_n_threads();
double mem_t = 8. * (2L * o * o * v * v + 1L * o * o * o * v + o * v + 3L * v * v * v * nthreads);
outfile->Printf("\n");
outfile->Printf(" (T) part (regular algorithm): %9.2lf mb\n", mem_t / 1024. / 1024.);
if (mem_t > memory) {
outfile->Printf(" <<< warning! >>> switched to low-memory (t) algorithm\n\n");
}
if (mem_t > memory || options_.get_bool("TRIPLES_LOW_MEMORY")) {
isLowMemory = true;
mem_t = 8. * (2L * o * o * v * v + o * o * o * v + o * v + 5L * o * o * o * nthreads);
outfile->Printf(" (T) part (low-memory alg.): %9.2lf mb\n\n", mem_t / 1024. / 1024.);
}
}
outfile->Printf("\n");
outfile->Printf(" ==> Input parameters <==\n\n");
outfile->Printf(" Freeze core orbitals? %5s\n", nfzc > 0 ? "yes" : "no");
outfile->Printf(" Use frozen natural orbitals? %5s\n", options_.get_bool("NAT_ORBS") ? "yes" : "no");
outfile->Printf(" r_convergence: %5.3le\n", r_conv);
outfile->Printf(" e_convergence: %5.3le\n", e_conv);
outfile->Printf(" Number of DIIS vectors: %5li\n", maxdiis);
outfile->Printf(" Number of frozen core orbitals: %5li\n", nfzc);
outfile->Printf(" Number of active occupied orbitals: %5li\n", ndoccact);
outfile->Printf(" Number of active virtual orbitals: %5li\n", nvirt);
outfile->Printf(" Number of frozen virtual orbitals: %5li\n", nfzv);
outfile->Printf("\n");
// allocate some memory for 3-index tensors
Qoo = (double *)malloc(ndoccact * ndoccact * nQ * sizeof(double));
Qov = (double *)malloc(ndoccact * nvirt * nQ * sizeof(double));
// max (v*v*nQ, full*ndocc*nQ)
Qvv = (double *)malloc(max * sizeof(double));
integrals = (double *)malloc(dim * sizeof(double));
tempt = (double *)malloc((o * (o + 1) * v * (v + 1) + o * v) * sizeof(double));
tempv = (double *)malloc(tempvdim * sizeof(double));
Abij = (double *)malloc(o * (o + 1) / 2 * v * sizeof(double));
Sbij = (double *)malloc(o * (o + 1) / 2 * v * sizeof(double));
if (!t2_on_disk) {
tb = (double *)malloc(o * o * v * v * sizeof(double));
}
w1 = (double *)malloc(o * v * sizeof(double));
t1 = (double *)malloc(o * v * sizeof(double));
I1 = (double *)malloc(v * v * sizeof(double));
I1p = (double *)malloc(v * v * sizeof(double));
memset((void *)integrals, '\0', dim * sizeof(double));
memset((void *)tempv, '\0', tempvdim * sizeof(double));
memset((void *)tempt, '\0', (o * (o + 1) * v * (v + 1) + o * v) * sizeof(double));
if (!t2_on_disk) {
memset((void *)tb, '\0', o * o * v * v * sizeof(double));
}
memset((void *)w1, '\0', o * v * sizeof(double));
memset((void *)t1, '\0', o * v * sizeof(double));
memset((void *)I1, '\0', v * v * sizeof(double));
memset((void *)I1p, '\0', v * v * sizeof(double));
memset((void *)Abij, '\0', o * (o + 1) / 2 * v * sizeof(double));
memset((void *)Sbij, '\0', o * (o + 1) / 2 * v * sizeof(double));
// DIIS:
diisvec = (double *)malloc(sizeof(double) * (maxdiis + 1));
memset((void *)diisvec, '\0', (maxdiis + 1) * sizeof(double));
// new 3-index stuff for t1-transformed integrals:
Fij = (double *)malloc(o * o * sizeof(double));
Fia = (double *)malloc(o * v * sizeof(double));
Fai = (double *)malloc(o * v * sizeof(double));
Fab = (double *)malloc(v * v * sizeof(double));
Ca_R = (double *)malloc(nso * (nmo + nfzc + nfzv) * sizeof(double));
Ca_L = (double *)malloc(nso * (nmo + nfzc + nfzv) * sizeof(double));
Ca = reference_wavefunction_->Ca()->pointer();
// one-electron integrals
auto mints = std::make_shared<MintsHelper>(basisset_, options_, 0);
H = mints->so_kinetic();
H->add(mints->so_potential());
if (t2_on_disk) {
auto psio = std::make_shared<PSIO>();
psio->open(PSIF_DCC_T2, PSIO_OPEN_NEW);
psio->write_entry(PSIF_DCC_T2, "t2", (char *)&tempt[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_T2, 1);
}
}
/*================================================================
update amplitudes
================================================================*/
void DFCoupledCluster::UpdateT1() {
long int v = nvirt;
long int o = ndoccact;
long int rs = nmo;
#pragma omp parallel for schedule(static)
for (long int a = o; a < rs; a++) {
for (long int i = 0; i < o; i++) {
double dia = -eps[i] + eps[a];
double tnew = -w1[(a - o) * o + i] / dia;
w1[(a - o) * o + i] = tnew + t1[(a - o) * o + i];
}
}
// error vector for diis is in tempv:
C_DCOPY(o * v, w1, 1, tempv + o * o * v * v, 1);
C_DAXPY(o * v, -1.0, t1, 1, tempv + o * o * v * v, 1);
C_DCOPY(o * v, w1, 1, t1, 1);
}
void DFCoupledCluster::UpdateT2() {
long int v = nvirt;
long int o = ndoccact;
auto psio = std::make_shared<PSIO>();
// df (ai|bj)
psio->open(PSIF_DCC_QSO, PSIO_OPEN_OLD);
psio->read_entry(PSIF_DCC_QSO, "qvo", (char *)&tempv[0], nQ * o * v * sizeof(double));
psio->close(PSIF_DCC_QSO, 1);
F_DGEMM('n', 't', o * v, o * v, nQ, 1.0, tempv, o * v, tempv, o * v, 0.0, integrals, o * v);
// we still have the residual in memory in tempv
psio->open(PSIF_DCC_R2, PSIO_OPEN_OLD);
psio->read_entry(PSIF_DCC_R2, "residual", (char *)&tempv[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_R2, 1);
#pragma omp parallel for schedule(static)
for (long int a = 0; a < v; a++) {
double da = eps[a + o];
for (long int b = 0; b < v; b++) {
double dab = da + eps[b + o];
for (long int i = 0; i < o; i++) {
double dabi = dab - eps[i];
for (long int j = 0; j < o; j++) {
long int iajb = a * v * o * o + i * v * o + b * o + j;
long int ijab = a * v * o * o + b * o * o + i * o + j;
double dijab = dabi - eps[j];
double tnew = -(integrals[iajb] + tempv[ijab]) / dijab;
tempt[ijab] = tnew;
}
}
}
}
// error vector is just dt
C_DCOPY(o * o * v * v, tempt, 1, tempv, 1);
if (t2_on_disk) {
psio->open(PSIF_DCC_T2, PSIO_OPEN_OLD);
psio->read_entry(PSIF_DCC_T2, "t2", (char *)&integrals[0], o * o * v * v * sizeof(double));
C_DAXPY(o * o * v * v, 1.0, tempt, 1, integrals, 1);
psio->write_entry(PSIF_DCC_T2, "t2", (char *)&integrals[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_T2, 1);
} else {
C_DAXPY(o * o * v * v, 1.0, tempt, 1, tb, 1);
}
}
/**
* Use Vabcd1
*/
void DFCoupledCluster::Vabcd1() {
long int o = ndoccact;
long int v = nvirt;
long int oov = o * o * v;
long int oo = o * o;
long int otri = o * (o + 1) / 2;
long int vtri = v * (v + 1) / 2;
auto psio = std::make_shared<PSIO>();
if (t2_on_disk) {
psio->open(PSIF_DCC_T2, PSIO_OPEN_OLD);
psio->read_entry(PSIF_DCC_T2, "t2", (char *)&tempv[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_T2, 1);
tb = tempv;
}
#pragma omp parallel for schedule(static)
for (long int i = 0; i < o; i++) {
for (long int j = i; j < o; j++) {
long int ij = Position(i, j);
for (long int a = 0; a < v; a++) {
for (long int b = a; b < v; b++) {
tempt[Position(a, b) * otri + ij] =
(tb[a * oov + b * oo + i * o + j] + tb[b * oov + a * oo + i * o + j]);
tempt[Position(a, b) * otri + ij + vtri * otri] =
(tb[a * oov + b * oo + i * o + j] - tb[b * oov + a * oo + i * o + j]);
}
tempt[Position(a, a) * otri + ij] = tb[a * oov + a * oo + i * o + j];
}
}
}
psio->open(PSIF_DCC_R2, PSIO_OPEN_OLD);
psio->read_entry(PSIF_DCC_R2, "residual", (char *)&tempv[0], o * o * v * v * sizeof(double));
int nthreads = Process::environment.get_n_threads();
double *Vcdb = integrals;
double *Vm = integrals + v * v * v;
double *Vp = Vm;
// qvv transpose
#pragma omp parallel for schedule(static)
for (int q = 0; q < nQ; q++) {
C_DCOPY(v * v, Qvv + q * v * v, 1, integrals + q, nQ);
}
C_DCOPY(nQ * v * v, integrals, 1, Qvv, 1);
double time1 = 0.0;
double time2 = 0.0;
double time3 = 0.0;
for (long int a = 0; a < v; a++) {
double start1 = omp_get_wtime();
int nb = v - a;
F_DGEMM('t', 'n', v, v * nb, nQ, 1.0, Qvv + a * v * nQ, nQ, Qvv + a * v * nQ, nQ, 0.0, Vcdb, v);
#pragma omp parallel for schedule(static)
for (long int b = a; b < v; b++) {
long int cd = 0;
long int ind1 = (b - a) * vtri;
long int ind2 = (b - a) * v * v;
long int v1, v2;
for (long int c = 0; c < v; c++) {
for (long int d = 0; d <= c; d++) {
Vp[ind1 + cd] = Vcdb[ind2 + d * v + c] + Vcdb[ind2 + c * v + d];
cd++;
}
}
}
double end1 = omp_get_wtime();
double start2 = omp_get_wtime();
F_DGEMM('n', 'n', otri, nb, vtri, 0.5, tempt, otri, Vp, vtri, 0.0, Abij, otri);
#pragma omp parallel for schedule(static)
for (long int b = a; b < v; b++) {
long int cd = 0;
long int ind1 = (b - a) * vtri;
long int ind2 = (b - a) * v * v;
long int v1, v2;
for (long int c = 0; c < v; c++) {
for (long int d = 0; d <= c; d++) {
Vm[ind1 + cd] = Vcdb[ind2 + d * v + c] - Vcdb[ind2 + c * v + d];
cd++;
}
}
}
F_DGEMM('n', 'n', otri, nb, vtri, 0.5, tempt + otri * vtri, otri, Vm, vtri, 0.0, Sbij, otri);
double end2 = omp_get_wtime();
// contribute to residual
double start3 = omp_get_wtime();
#pragma omp parallel for schedule(static)
for (long int b = a; b < v; b++) {
for (long int i = 0; i < o; i++) {
for (long int j = 0; j < o; j++) {
int sg = (i > j) ? 1 : -1;
tempv[a * oo * v + b * oo + i * o + j] +=
Abij[(b - a) * otri + Position(i, j)] + sg * Sbij[(b - a) * otri + Position(i, j)];
if (a != b) {
tempv[b * oov + a * oo + i * o + j] +=
Abij[(b - a) * otri + Position(i, j)] - sg * Sbij[(b - a) * otri + Position(i, j)];
}
}
}
}
double end3 = omp_get_wtime();
time1 += end1 - start1;
time2 += end2 - start2;
time3 += end3 - start3;
}
// contribute to residual
psio->write_entry(PSIF_DCC_R2, "residual", (char *)&tempv[0], o * o * v * v * sizeof(double));
psio->close(PSIF_DCC_R2, 1);
// qvv un-transpose
#pragma omp parallel for schedule(static)
for (int q = 0; q < nQ; q++) {
C_DCOPY(v * v, Qvv + q, nQ, integrals + q * v * v, 1);
}
C_DCOPY(nQ * v * v, integrals, 1, Qvv, 1);
}
}
} // end of namespaces