Esempio n. 1
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 def test_check_correct_ionic(self):
     shutil.copy("vasprun.xml.ionic", "vasprun.xml")
     h = UnconvergedErrorHandler()
     self.assertTrue(h.check())
     d = h.correct()
     self.assertEqual(d["errors"], ['Unconverged'])
     os.remove("vasprun.xml")
Esempio n. 2
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 def test_check_correct_electronic_repeat(self):
     shutil.copy("vasprun.xml.electronic2", "vasprun.xml")
     h = UnconvergedErrorHandler()
     self.assertTrue(h.check())
     d = h.correct()
     self.assertEqual(d, {"errors": ["Unconverged"], "actions": None})
     os.remove("vasprun.xml")
Esempio n. 3
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 def test_check_correct_scan(self):
     shutil.copy("vasprun.xml.scan", "vasprun.xml")
     h = UnconvergedErrorHandler()
     self.assertTrue(h.check())
     d = h.correct()
     self.assertEqual(d["errors"], ['Unconverged'])
     self.assertIn({"dict": "INCAR",
                        "action": {"_set": {"ALGO": "All"}}},d["actions"])
     os.remove("vasprun.xml")
Esempio n. 4
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 def test_is_converged(self):
     import pymatgen
     print(pymatgen.__file__)
     print(pymatgen.__version__)
     import custodian
     print(custodian.__version__)
     path = os.path.join(TEST_PATH, self.path, 'unconverged', 'vasprun.xml')
     handler = UnconvergedErrorHandler(path)
     print(handler.check())
Esempio n. 5
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    def test_check_correct(self):
        subdir = os.path.join(test_dir, "unconverged")
        os.chdir(subdir)

        shutil.copy("INCAR", "INCAR.orig")
        shutil.copy("KPOINTS", "KPOINTS.orig")
        shutil.copy("POSCAR", "POSCAR.orig")
        shutil.copy("CONTCAR", "CONTCAR.orig")

        h = UnconvergedErrorHandler()
        self.assertTrue(h.check())
        d = h.correct()
        self.assertEqual(d["errors"], ['Unconverged'])

        os.remove(os.path.join(subdir, "error.1.tar.gz"))

        shutil.move("INCAR.orig", "INCAR")
        shutil.move("KPOINTS.orig", "KPOINTS")
        shutil.move("POSCAR.orig", "POSCAR")
        shutil.move("CONTCAR.orig", "CONTCAR")
Esempio n. 6
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 def test_to_from_dict(self):
     h = UnconvergedErrorHandler("random_name.xml")
     h2 = UnconvergedErrorHandler.from_dict(h.as_dict())
     self.assertEqual(type(h2), UnconvergedErrorHandler)
     self.assertEqual(h2.output_filename, "random_name.xml")
Esempio n. 7
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 def run_task(self, fw_spec):
     ueh = UnconvergedErrorHandler()
     custodian_out = ueh.correct()
     return FWAction(stored_data={'error_list': custodian_out['errors']})
Esempio n. 8
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    def run_task(self, fw_spec):
        if '_fizzled_parents' in fw_spec and not 'prev_vasp_dir' in fw_spec:
            prev_dir = get_loc(fw_spec['_fizzled_parents'][0]['launches'][0]['launch_dir'])
            update_spec = {}  # add this later when creating new FW
            fizzled_parent = True
            parse_dos = False
        else:
            prev_dir = get_loc(fw_spec['prev_vasp_dir'])
            update_spec = {'prev_vasp_dir': prev_dir,
                           'prev_task_type': fw_spec['prev_task_type'],
                           'run_tags': fw_spec['run_tags'], 'parameters': fw_spec.get('parameters')}
            fizzled_parent = False
            parse_dos = 'Uniform' in fw_spec['prev_task_type']
        if 'run_tags' in fw_spec:
            self.additional_fields['run_tags'] = fw_spec['run_tags']
        else:
            self.additional_fields['run_tags'] = fw_spec['_fizzled_parents'][0]['spec']['run_tags']

        if MOVE_TO_GARDEN_DEV:
            prev_dir = move_to_garden(prev_dir, prod=False)

        elif MOVE_TO_GARDEN_PROD:
            prev_dir = move_to_garden(prev_dir, prod=True)

        # get the directory containing the db file
        db_dir = os.environ['DB_LOC']
        db_path = os.path.join(db_dir, 'tasks_db.json')

        logging.basicConfig(level=logging.INFO)
        logger = logging.getLogger('MPVaspDrone')
        logger.setLevel(logging.INFO)
        sh = logging.StreamHandler(stream=sys.stdout)
        sh.setLevel(getattr(logging, 'INFO'))
        logger.addHandler(sh)

        with open(db_path) as f:
            db_creds = json.load(f)
            drone = MPVaspDrone(
                host=db_creds['host'], port=db_creds['port'],
                database=db_creds['database'], user=db_creds['admin_user'],
                password=db_creds['admin_password'],
                collection=db_creds['collection'], parse_dos=parse_dos,
                additional_fields=self.additional_fields,
                update_duplicates=self.update_duplicates)
            t_id, d = drone.assimilate(prev_dir, launches_coll=LaunchPad.auto_load().launches)

        mpsnl = d['snl_final'] if 'snl_final' in d else d['snl']
        snlgroup_id = d['snlgroup_id_final'] if 'snlgroup_id_final' in d else d['snlgroup_id']
        update_spec.update({'mpsnl': mpsnl, 'snlgroup_id': snlgroup_id})

        print 'ENTERED task id:', t_id
        stored_data = {'task_id': t_id}
        if d['state'] == 'successful':
            update_spec['analysis'] = d['analysis']
            update_spec['output'] = d['output']
            return FWAction(stored_data=stored_data, update_spec=update_spec)

        # not successful - first test to see if UnconvergedHandler is needed
        if not fizzled_parent:
            unconverged_tag = 'unconverged_handler--{}'.format(fw_spec['prev_task_type'])
            output_dir = last_relax(os.path.join(prev_dir, 'vasprun.xml'))
            ueh = UnconvergedErrorHandler(output_filename=output_dir)
            if ueh.check() and unconverged_tag not in fw_spec['run_tags']:
                print 'Unconverged run! Creating dynamic FW...'

                spec = {'prev_vasp_dir': prev_dir,
                        'prev_task_type': fw_spec['task_type'],
                        'mpsnl': mpsnl, 'snlgroup_id': snlgroup_id,
                        'task_type': fw_spec['prev_task_type'],
                        'run_tags': list(fw_spec['run_tags']),
                        'parameters': fw_spec.get('parameters'),
                        '_dupefinder': DupeFinderVasp().to_dict(),
                        '_priority': fw_spec['_priority']}

                snl = StructureNL.from_dict(spec['mpsnl'])
                spec['run_tags'].append(unconverged_tag)
                spec['_queueadapter'] = QA_VASP

                fws = []
                connections = {}

                f = Composition.from_formula(
                    snl.structure.composition.reduced_formula).alphabetical_formula

                fws.append(FireWork(
                    [VaspCopyTask({'files': ['INCAR', 'KPOINTS', 'POSCAR', 'POTCAR', 'CONTCAR'],
                                   'use_CONTCAR': False}), SetupUnconvergedHandlerTask(),
                     get_custodian_task(spec)], spec, name=get_slug(f + '--' + spec['task_type']),
                    fw_id=-2))

                spec = {'task_type': 'VASP db insertion', '_allow_fizzled_parents': True,
                        '_priority': fw_spec['_priority'], '_queueadapter': QA_DB,
                        'run_tags': list(fw_spec['run_tags'])}
                spec['run_tags'].append(unconverged_tag)
                fws.append(
                    FireWork([VaspToDBTask()], spec, name=get_slug(f + '--' + spec['task_type']),
                             fw_id=-1))
                connections[-2] = -1

                wf = Workflow(fws, connections)

                return FWAction(detours=wf)

        # not successful and not due to convergence problem - FIZZLE
        raise ValueError("DB insertion successful, but don't know how to fix this FireWork! Can't continue with workflow...")
Esempio n. 9
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 def test_to_from_dict(self):
     h = UnconvergedErrorHandler("random_name.xml")
     h2 = UnconvergedErrorHandler.from_dict(h.as_dict())
     self.assertEqual(type(h2), UnconvergedErrorHandler)
     self.assertEqual(h2.output_filename, "random_name.xml")
Esempio n. 10
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File: cvasp.py Progetto: HXTP/dpgen
from custodian.vasp.jobs import VaspJob as cvj
from custodian.vasp.validators import VaspFilesValidator, VasprunXMLValidator
from custodian.vasp.handlers import VaspErrorHandler,UnconvergedErrorHandler, \
        NonConvergingErrorHandler,FrozenJobErrorHandler,StdErrHandler,\
        WalltimeHandler,PositiveEnergyErrorHandler
from custodian import Custodian
import argparse

handlers = [
    VaspErrorHandler(),
    FrozenJobErrorHandler(),
    StdErrHandler(),
    NonConvergingErrorHandler(),
    WalltimeHandler(),
    PositiveEnergyErrorHandler(),
    UnconvergedErrorHandler()
]
validators = [VaspFilesValidator(), VasprunXMLValidator()]


def runvasp(cmd,
            opt=False,
            max_errors=3,
            backup=False,
            auto_gamma=False,
            auto_npar=True,
            ediffg=-.05):
    """
    cmd example:
    cmd=['mpirun', '-np', '32' , '-machinefile', 'hosts','vasp_std']
    """
Esempio n. 11
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    def run_task(self, fw_spec):

        handler_groups = {
            "default": [VaspErrorHandler(), MeshSymmetryErrorHandler(), UnconvergedErrorHandler(),
                        NonConvergingErrorHandler(),PotimErrorHandler(),
                        PositiveEnergyErrorHandler(), FrozenJobErrorHandler(), StdErrHandler()],
            "strict": [VaspErrorHandler(), MeshSymmetryErrorHandler(), UnconvergedErrorHandler(),
                       NonConvergingErrorHandler(),PotimErrorHandler(),
                       PositiveEnergyErrorHandler(), FrozenJobErrorHandler(),
                       StdErrHandler(), AliasingErrorHandler(), DriftErrorHandler()],
            "md": [VaspErrorHandler(), NonConvergingErrorHandler()],
            "no_handler": []
            }

        vasp_cmd = env_chk(self["vasp_cmd"], fw_spec)

        if isinstance(vasp_cmd, str):
            vasp_cmd = os.path.expandvars(vasp_cmd)
            vasp_cmd = shlex.split(vasp_cmd)

        # initialize variables
        job_type = self.get("job_type", "normal")
        scratch_dir = env_chk(self.get("scratch_dir"), fw_spec)
        gzip_output = self.get("gzip_output", True)
        max_errors = self.get("max_errors", CUSTODIAN_MAX_ERRORS)
        auto_npar = env_chk(self.get("auto_npar"), fw_spec, strict=False, default=False)
        gamma_vasp_cmd = env_chk(self.get("gamma_vasp_cmd"), fw_spec, strict=False, default=None)
        if gamma_vasp_cmd:
            gamma_vasp_cmd = shlex.split(gamma_vasp_cmd)

        # construct jobs
        if job_type == "normal":
            jobs = [VaspJob(vasp_cmd, auto_npar=auto_npar, gamma_vasp_cmd=gamma_vasp_cmd)]
        elif job_type == "double_relaxation_run":
            jobs = VaspJob.double_relaxation_run(vasp_cmd, auto_npar=auto_npar,
                                                 ediffg=self.get("ediffg"),
                                                 half_kpts_first_relax=self.get("half_kpts_first_relax", HALF_KPOINTS_FIRST_RELAX))
        elif job_type == "metagga_opt_run":
            jobs = VaspJob.metagga_opt_run(vasp_cmd, auto_npar=auto_npar,
                                                 ediffg=self.get("ediffg"),
                                                 half_kpts_first_relax=self.get("half_kpts_first_relax", HALF_KPOINTS_FIRST_RELAX))

        elif job_type == "full_opt_run":
            jobs = VaspJob.full_opt_run(vasp_cmd, auto_npar=auto_npar,
                                        ediffg=self.get("ediffg"),
                                        max_steps=9,
                                        half_kpts_first_relax=self.get("half_kpts_first_relax", HALF_KPOINTS_FIRST_RELAX))
        elif job_type == "neb":
            # TODO: @shyuep @HanmeiTang This means that NEB can only be run (i) in reservation mode
            # and (ii) when the queueadapter parameter is overridden and (iii) the queue adapter
            # has a convention for nnodes (with that name). Can't the number of nodes be made a
            # parameter that the user sets differently? e.g., fw_spec["neb_nnodes"] must be set
            # when setting job_type=NEB? Then someone can use this feature in non-reservation
            # mode and without this complication. -computron
            nnodes = int(fw_spec["_queueadapter"]["nnodes"])

            # TODO: @shyuep @HanmeiTang - I am not sure what the code below is doing. It looks like
            # it is trying to override the number of processors. But I tried running the code
            # below after setting "vasp_cmd = 'mpirun -n 16 vasp'" and the code fails.
            # (i) Is this expecting an array vasp_cmd rather than String? If so, that's opposite to
            # the rest of this task's convention and documentation
            # (ii) can we get rid of this hacking in the first place? e.g., allowing the user to
            # separately set the NEB_VASP_CMD as an env_variable and not rewriting the command
            # inside this.
            # -computron

            # Index the tag "-n" or "-np"
            index = [i for i, s in enumerate(vasp_cmd) if '-n' in s]
            ppn = int(vasp_cmd[index[0] + 1])
            vasp_cmd[index[0] + 1] = str(nnodes * ppn)

            # Do the same for gamma_vasp_cmd
            if gamma_vasp_cmd:
                index = [i for i, s in enumerate(gamma_vasp_cmd) if '-n' in s]
                ppn = int(gamma_vasp_cmd[index[0] + 1])
                gamma_vasp_cmd[index[0] + 1] = str(nnodes * ppn)

            jobs = [VaspNEBJob(vasp_cmd, final=False, auto_npar=auto_npar,
                               gamma_vasp_cmd=gamma_vasp_cmd)]
        else:
            raise ValueError("Unsupported job type: {}".format(job_type))

        # construct handlers

        handler_group = self.get("handler_group", "default")
        if isinstance(handler_group, str):
            handlers = handler_groups[handler_group]
        else:
            handlers = handler_group

        if self.get("max_force_threshold"):
            handlers.append(MaxForceErrorHandler(max_force_threshold=self["max_force_threshold"]))

        if self.get("wall_time"):
            handlers.append(WalltimeHandler(wall_time=self["wall_time"]))

        if job_type == "neb":
            validators = []  # CINEB vasprun.xml sometimes incomplete, file structure different
        else:
            validators = [VasprunXMLValidator(), VaspFilesValidator()]

        c = Custodian(handlers, jobs, validators=validators, max_errors=max_errors,
                      scratch_dir=scratch_dir, gzipped_output=gzip_output)

        c.run()

        if os.path.exists(zpath("custodian.json")):
            stored_custodian_data = {"custodian": loadfn(zpath("custodian.json"))}
            return FWAction(stored_data=stored_custodian_data)
Esempio n. 12
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    def launch_workflow(self,
                        launchpad_dir="",
                        k_product=50,
                        job=None,
                        user_incar_settings=None,
                        potcar_functional='PBE',
                        additional_handlers=[]):
        """
            Creates a list of Fireworks. Each Firework represents calculations
            that will be done on a slab system of a compound in a specific
            orientation. Each Firework contains a oriented unit cell relaxation job
            and a WriteSlabVaspInputs which creates os. Firework(s) depending
            on whether or not Termination=True. Vasp outputs from all slab and
            oriented unit cell calculations will then be inserted into a database.
            Args:
                launchpad_dir (str path): The path to my_launchpad.yaml. Defaults to
                    the current working directory containing your runs
                k_product: kpts[0][0]*a. Decide k density without
                    kpoint0, default to 50
                cwd: (str path): The curent working directory. Location of where you
                    want your vasp outputs to be.
                job (VaspJob): The command (cmd) entered into VaspJob object. Default
                    is specifically set for running vasp jobs on Carver at NERSC
                    (use aprun for Hopper or Edison).
                user_incar_settings(dict): A dict specifying additional incar
                    settings, default to None (ediff_per_atom=False)
                potcar_functional (str): default to PBE
        """

        launchpad = LaunchPad.from_file(
            os.path.join(os.environ["HOME"], launchpad_dir,
                         "my_launchpad.yaml"))
        if self.reset:
            launchpad.reset('', require_password=False)

        # Scratch directory reffered to by custodian.
        # May be different on non-Nersc systems.

        if not job:
            job = VaspJob(["mpirun", "-n", "64", "vasp"],
                          auto_npar=False,
                          copy_magmom=True)

        handlers = [
            VaspErrorHandler(),
            NonConvergingErrorHandler(),
            UnconvergedErrorHandler(),
            PotimErrorHandler(),
            PositiveEnergyErrorHandler(),
            FrozenJobErrorHandler(timeout=3600)
        ]
        if additional_handlers:
            handlers.extend(additional_handlers)

        cust_params = {
            "custodian_params": {
                "scratch_dir":
                os.path.join("/global/scratch2/sd/", os.environ["USER"])
            },
            "jobs": job.double_relaxation_run(job.vasp_cmd, auto_npar=False),
            "handlers": handlers,
            "max_errors": 100
        }  # will return a list of jobs
        # instead of just being one job

        fws = []
        for key in self.miller_dict.keys():
            # Enumerate through all compounds in the dictionary,
            # the key is the compositional formula of the compound
            print key
            for miller_index in self.miller_dict[key]:
                # Enumerates through all miller indices we
                # want to create slabs of that compound from

                print str(miller_index)

                max_norm = max(
                    miller_index) if self.max_normal_search else None
                # Whether or not we want to use the
                # max_normal_search algorithm from surface.py
                print 'true or false max norm is ', max_norm, self.max_normal_search

                slab = SlabGenerator(self.unit_cells_dict[key][0],
                                     miller_index,
                                     self.ssize,
                                     self.vsize,
                                     max_normal_search=max_norm)
                oriented_uc = slab.oriented_unit_cell

                if self.fail_safe and len(oriented_uc) > 199:
                    break
                # This method only creates the oriented unit cell, the
                # slabs are created in the WriteSlabVaspInputs task.
                # WriteSlabVaspInputs will create the slabs from
                # the contcar of the oriented unit cell calculation
                handler = []
                tasks = []

                folderbulk = '/%s_%s_k%s_s%sv%s_%s%s%s' % (
                    oriented_uc.composition.reduced_formula, 'bulk', k_product,
                    self.ssize, self.vsize, str(miller_index[0]),
                    str(miller_index[1]), str(miller_index[2]))
                cwd = os.getcwd()
                if self.get_bulk_e:
                    tasks.extend([
                        WriteUCVaspInputs(
                            oriented_ucell=oriented_uc,
                            folder=folderbulk,
                            cwd=cwd,
                            user_incar_settings=user_incar_settings,
                            potcar_functional=potcar_functional,
                            k_product=k_product),
                        RunCustodianTask(dir=folderbulk,
                                         cwd=cwd,
                                         **cust_params),
                        VaspSlabDBInsertTask(struct_type="oriented_unit_cell",
                                             loc=folderbulk,
                                             cwd=cwd,
                                             miller_index=miller_index,
                                             **self.vaspdbinsert_params)
                    ])

                    # Slab will inherit average final magnetic moment
                    # of the bulk from outcar, will have to generalize
                    # this for systems with different elements later
                    # element = oriented_uc.species[0]
                    # out = Outcar(cwd+folderbulk)
                    # out_mag = out.magnetization
                    # tot_mag = [mag['tot'] for mag in out_mag]
                    # magmom = np.mean(tot_mag)
                    # user_incar_settings['MAGMOM'] = {element: magmom}

                tasks.append(
                    WriteSlabVaspInputs(
                        folder=folderbulk,
                        cwd=cwd,
                        user_incar_settings=user_incar_settings,
                        terminations=self.terminations,
                        custodian_params=cust_params,
                        vaspdbinsert_parameters=self.vaspdbinsert_params,
                        potcar_functional=potcar_functional,
                        k_product=k_product,
                        miller_index=miller_index,
                        min_slab_size=self.ssize,
                        min_vacuum_size=self.vsize,
                        ucell=self.unit_cells_dict[key][0]))

                fw = Firework(tasks, name=folderbulk)

                fws.append(fw)
        wf = Workflow(fws, name='Surface Calculations')
        launchpad.add_wf(wf)
Esempio n. 13
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 def run_task(self, fw_spec):
     ueh = UnconvergedErrorHandler()
     custodian_out = ueh.correct()
     return FWAction(stored_data={'error_list': custodian_out['errors']})
Esempio n. 14
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    def run_task(self, fw_spec):

        handler_groups = {
            "default": [
                VaspErrorHandler(),
                MeshSymmetryErrorHandler(),
                UnconvergedErrorHandler(),
                NonConvergingErrorHandler(),
                PotimErrorHandler(),
                PositiveEnergyErrorHandler(),
                FrozenJobErrorHandler(),
                StdErrHandler(),
                DriftErrorHandler()
            ],
            "strict": [
                VaspErrorHandler(),
                MeshSymmetryErrorHandler(),
                UnconvergedErrorHandler(),
                NonConvergingErrorHandler(),
                PotimErrorHandler(),
                PositiveEnergyErrorHandler(),
                FrozenJobErrorHandler(),
                StdErrHandler(),
                AliasingErrorHandler(),
                DriftErrorHandler()
            ],
            "md": [VaspErrorHandler(),
                   NonConvergingErrorHandler()],
            "no_handler": []
        }

        vasp_cmd = env_chk(self["vasp_cmd"], fw_spec)

        if isinstance(vasp_cmd, six.string_types):
            vasp_cmd = os.path.expandvars(vasp_cmd)
            vasp_cmd = shlex.split(vasp_cmd)

        # initialize variables
        scratch_dir = env_chk(self.get("scratch_dir"), fw_spec)
        gzip_output = self.get("gzip_output", True)
        max_errors = self.get("max_errors", 5)
        auto_npar = env_chk(self.get("auto_npar"),
                            fw_spec,
                            strict=False,
                            default=False)
        gamma_vasp_cmd = env_chk(self.get("gamma_vasp_cmd"),
                                 fw_spec,
                                 strict=False,
                                 default=None)

        jobs = [
            VaspJob(vasp_cmd,
                    auto_npar=auto_npar,
                    gamma_vasp_cmd=gamma_vasp_cmd)
        ]

        # construct handlers
        handlers = handler_groups[self.get("handler_group", "default")]

        validators = []

        c = Custodian(handlers,
                      jobs,
                      validators=validators,
                      max_errors=max_errors,
                      scratch_dir=scratch_dir,
                      gzipped_output=gzip_output)

        c.run()
Esempio n. 15
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from pymatgen.io.vasp.inputs import Incar, Poscar, VaspInput,Potcar, Kpoints
import os,shutil
from custodian.vasp.jobs import VaspJob
from custodian.vasp.handlers import VaspErrorHandler, UnconvergedErrorHandler,MeshSymmetryErrorHandler, NonConvergingErrorHandler, PotimErrorHandler
from custodian.vasp.validators import VasprunXMLValidator
from custodian.custodian import Custodian
inc=Incar.from_file("INCAR")
pot=Potcar.from_file("POTCAR")
pos=Poscar.from_file("POSCAR")
kp=Kpoints.from_file("KPOINTS")
shutil.copy2('/users/knc6/bin/vdw_kernel.bindat','./')
vinput = VaspInput.from_directory(".")
job=VaspJob(['mpirun', '-np', '16', '/users/knc6/VASP/vasp54/src/vasp.5.4.1/bin/vasp_std'], final=False, backup=False)
handlers = [VaspErrorHandler(), MeshSymmetryErrorHandler(),UnconvergedErrorHandler(), NonConvergingErrorHandler(),PotimErrorHandler()]
validators = [VasprunXMLValidator()]
c = Custodian(handlers, [job],max_errors=5,validators=validators)
c.run()
Esempio n. 16
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    def run_task(self, fw_spec):
        if '_fizzled_parents' in fw_spec and not 'prev_vasp_dir' in fw_spec:
            prev_dir = get_loc(
                fw_spec['_fizzled_parents'][0]['launches'][0]['launch_dir'])
            update_spec = {}  # add this later when creating new FW
            fizzled_parent = True
            parse_dos = False
        else:
            prev_dir = get_loc(fw_spec['prev_vasp_dir'])
            update_spec = {
                'prev_vasp_dir': prev_dir,
                'prev_task_type': fw_spec['prev_task_type'],
                'run_tags': fw_spec['run_tags'],
                'parameters': fw_spec.get('parameters')
            }
            fizzled_parent = False
            parse_dos = 'Uniform' in fw_spec['prev_task_type']
        if 'run_tags' in fw_spec:
            self.additional_fields['run_tags'] = fw_spec['run_tags']
        else:
            self.additional_fields['run_tags'] = fw_spec['_fizzled_parents'][
                0]['spec']['run_tags']

        if MOVE_TO_GARDEN_DEV:
            prev_dir = move_to_garden(prev_dir, prod=False)

        elif MOVE_TO_GARDEN_PROD:
            prev_dir = move_to_garden(prev_dir, prod=True)

        # get the directory containing the db file
        db_dir = os.environ['DB_LOC']
        db_path = os.path.join(db_dir, 'tasks_db.json')

        logging.basicConfig(level=logging.INFO)
        logger = logging.getLogger('MPVaspDrone')
        logger.setLevel(logging.INFO)
        sh = logging.StreamHandler(stream=sys.stdout)
        sh.setLevel(getattr(logging, 'INFO'))
        logger.addHandler(sh)

        with open(db_path) as f:
            db_creds = json.load(f)
            drone = MPVaspDrone(host=db_creds['host'],
                                port=db_creds['port'],
                                database=db_creds['database'],
                                user=db_creds['admin_user'],
                                password=db_creds['admin_password'],
                                collection=db_creds['collection'],
                                parse_dos=parse_dos,
                                additional_fields=self.additional_fields,
                                update_duplicates=self.update_duplicates)
            t_id, d = drone.assimilate(
                prev_dir, launches_coll=LaunchPad.auto_load().launches)

        mpsnl = d['snl_final'] if 'snl_final' in d else d['snl']
        snlgroup_id = d['snlgroup_id_final'] if 'snlgroup_id_final' in d else d[
            'snlgroup_id']
        update_spec.update({'mpsnl': mpsnl, 'snlgroup_id': snlgroup_id})

        print 'ENTERED task id:', t_id
        stored_data = {'task_id': t_id}
        if d['state'] == 'successful':
            update_spec['analysis'] = d['analysis']
            update_spec['output'] = d['output']
            return FWAction(stored_data=stored_data, update_spec=update_spec)

        # not successful - first test to see if UnconvergedHandler is needed
        if not fizzled_parent:
            unconverged_tag = 'unconverged_handler--{}'.format(
                fw_spec['prev_task_type'])
            output_dir = last_relax(os.path.join(prev_dir, 'vasprun.xml'))
            ueh = UnconvergedErrorHandler(output_filename=output_dir)
            if ueh.check() and unconverged_tag not in fw_spec['run_tags']:
                print 'Unconverged run! Creating dynamic FW...'

                spec = {
                    'prev_vasp_dir': prev_dir,
                    'prev_task_type': fw_spec['task_type'],
                    'mpsnl': mpsnl,
                    'snlgroup_id': snlgroup_id,
                    'task_type': fw_spec['prev_task_type'],
                    'run_tags': list(fw_spec['run_tags']),
                    'parameters': fw_spec.get('parameters'),
                    '_dupefinder': DupeFinderVasp().to_dict(),
                    '_priority': fw_spec['_priority']
                }

                snl = StructureNL.from_dict(spec['mpsnl'])
                spec['run_tags'].append(unconverged_tag)
                spec['_queueadapter'] = QA_VASP

                fws = []
                connections = {}

                f = Composition.from_formula(
                    snl.structure.composition.reduced_formula
                ).alphabetical_formula

                fws.append(
                    FireWork([
                        VaspCopyTask({
                            'files': [
                                'INCAR', 'KPOINTS', 'POSCAR', 'POTCAR',
                                'CONTCAR'
                            ],
                            'use_CONTCAR':
                            False
                        }),
                        SetupUnconvergedHandlerTask(),
                        get_custodian_task(spec)
                    ],
                             spec,
                             name=get_slug(f + '--' + spec['task_type']),
                             fw_id=-2))

                spec = {
                    'task_type': 'VASP db insertion',
                    '_allow_fizzled_parents': True,
                    '_priority': fw_spec['_priority'],
                    '_queueadapter': QA_DB,
                    'run_tags': list(fw_spec['run_tags'])
                }
                spec['run_tags'].append(unconverged_tag)
                fws.append(
                    FireWork([VaspToDBTask()],
                             spec,
                             name=get_slug(f + '--' + spec['task_type']),
                             fw_id=-1))
                connections[-2] = -1

                wf = Workflow(fws, connections)

                return FWAction(detours=wf)

        # not successful and not due to convergence problem - FIZZLE
        raise ValueError(
            "DB insertion successful, but don't know how to fix this FireWork! Can't continue with workflow..."
        )