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IMPORTANT

This repository is version 1 of QP. This version is not supported any more.

Version 2 is available here : https://github.com/QuantumPackage/qp2


QP
Build Status Gitter

Set of quantum chemistry programs and libraries. (under GNU GENERAL PUBLIC LICENSE v2)

For more information, you can visit the wiki of the project, or below for the installation instructions.

Demo

Full-CI energy of C2 in 2 minutes

Frozen-core Full-CI energy of Ti

Installation

Requirements

  • Fortran compiler (ifort and gfortran are tested)
  • Python >= 2.6
  • GNU make
  • Bash
  • Blas/Lapack
  • unzip
  • g++ (For ninja)

Standard installation

1) Configure

$ ./configure <config_file> 

For example you can type ./configure config/gfortran.cfg

This command has two purposes :

  • Download and install all the requirements. Installing OCaml and the Core library may take some time (up to 20min on an old machine).
  • Create the file which contains all the dependencies for the binaries.
    Its not a Makefile, but a Ninja file (so dont type make its hopeless, type ninja instead)

Compilation Flags (<config_file>)

<config_file> is the path to the file which contains all the compilation flags (optimization flags, Lapack libary, etc). There are two example configure files in $QP_ROOT/config : ifort.cfg and gfortran.cfg. You can copy these files to create a new file adapted to your architecture.

2) Load environment variables

source quantum_package.rc

This file contains all the environment variables needed by the quantum package both to compile and run. This should also be done before running calculations.

Optional) Add some modules

Usage:
       qp_module.py create -n <name> [<children_modules>...]
       qp_module.py download -n <name> [<path_folder>...]
       qp_module.py install <name>...
       qp_module.py list (--installed | --available-local)
       qp_module.py uninstall <name>

For exemple you can type : qp_module.py install Full_CI

3) Compiling the Fortran

Just type ninja if you are in $QP_ROOT. The compilation will take approximately 3 min.

5) Testing if all is ok

cd tests ; ./run_tests.sh

Note on EZFIO.cfg

Format specification:

Required:
    [<provider_name>]   The name of the provider in irp.f90 and in the EZFIO lib
    doc:<str>           The plain text documentation
    type:<str>          A type supported by the OCaml.
                            type `ei_handler.py get_supported_type` for a list
    interface:<str>     The interface is a list of strings sepeared by ","  which can contain :
                          - ezfio : to build the EZFIO API
                          - provider : to build the corresponding providers 
                          - ocaml : to build the corresponding bindings in OCaml
Optional:
    default: <str>      The default value,
                            needed if 'ocaml' is in interface list.
                           ! No list is allowed for now !
    size: <str>         The size information.
                            (by default is one)
                            Example : 1; =sum(ao_num); (ao_num,3)
                            WARNING : The module and the value are separed by a "." not a "_".
                            For example (determinants.n_det)
    ezfio_name: <str>   The name in the EZFIO API
                             (by default is <provider_name>)
    ezfio_dir: <str>    Will be the directory of EZFIO.
                              (by default is <module_lower>)

Example of EZFIO.cfg:

[thresh_SCF]
doc: Threshold on the convergence of the Hartree Fock energy
type: Threshold
default: 1.e-10
interface: provider,ezfio,ocaml
size: 1

[energy]
type: Strictly_negative_float
doc: Calculated HF energy
interface: ezfio

FAQ

My hartree-Fock segfault !

A old version of Lapack have a bug. Just relax your convergence criterium

Error: ezfio_* is already defined.

Why ?

You have two or more ezfio configuration files for the same variable. Check files in $QP_ROOT/install/EZFIO/config/ and the all the EZFIO.cfg.

Fix

- rm $QP_ROOT/install/EZFIO/config/*
- ninja 

Error: Seg Fault (139)

Segmentation fault (core dumped)
Program exited with code 139.

Why ?

Its caused when we call the DGEMM routine of LAPACK.

Fix

Set ulimit -s unlimited, before runing qp_run. It seems to fix the problem.

Error: f77zmq not symbol found

In the Makefile of the f77zmq, you should NOT use ar but libtool -static