from plasma.models.mpi_runner import (

mpi_train, mpi_make_predictions_and_evaluate

)

from mpi4py import MPI

from plasma.preprocessor.preprocess import guarantee_preprocessed

from plasma.preprocessor.augment import Augmentator

from plasma.models.loader import Loader

from plasma.conf import conf

from pprint import pprint

'''

#########################################################

This file trains a deep learning model to predict

disruptions on time series data from plasma discharges.

Must run guarantee_preprocessed.py in order for this to work.

Dependencies:

conf.py: configuration of model,training,paths, and data

model_builder.py: logic to construct the ML architecture

data_processing.py: classes to handle data processing

Author: Julian Kates-Harbeck, [email protected]

This work was supported by the DOE CSGF program.

#########################################################

'''

import os

import sys

import datetime

import random

import numpy as np

import matplotlib

matplotlib.use('Agg')

sys.setrecursionlimit(10000)

if conf['model']['shallow']:

print(

"Shallow learning using MPI is not supported yet. ",

"Set conf['model']['shallow'] to False.")

exit(1)

if conf['data']['normalizer'] == 'minmax':

from plasma.preprocessor.normalize import MinMaxNormalizer as Normalizer

elif conf['data']['normalizer'] == 'meanvar':

from plasma.preprocessor.normalize import MeanVarNormalizer as Normalizer

elif conf['data']['normalizer'] == 'var':

# performs !much better than minmaxnormalizer

from plasma.preprocessor.normalize import VarNormalizer as Normalizer

elif conf['data']['normalizer'] == 'averagevar':

# performs !much better than minmaxnormalizer

from plasma.preprocessor.normalize import (

AveragingVarNormalizer as Normalizer)

else:

print('unkown normalizer. exiting')

exit(1)

comm = MPI.COMM_WORLD

task_index = comm.Get_rank()

num_workers = comm.Get_size()

NUM_GPUS = 4

MY_GPU = task_index % NUM_GPUS

np.random.seed(task_index)

random.seed(task_index)

if task_index == 0:

pprint(conf)

only_predict = len(sys.argv) > 1

custom_path = None

if only_predict:

custom_path = sys.argv[1]

print("predicting using path {}".format(custom_path))

#####################################################

# NORMALIZATION #

#####################################################

# TODO(KGF): identical in at least 3x files in examples/

# make sure preprocessing has been run, and is saved as a file

if task_index == 0:

# TODO(KGF): check tuple unpack

(shot_list_train, shot_list_validate,

shot_list_test) = guarantee_preprocessed(conf)

comm.Barrier()

(shot_list_train, shot_list_validate,

shot_list_test) = guarantee_preprocessed(conf)

print("normalization", end='')

raw_normalizer = Normalizer(conf)

raw_normalizer.train()

is_inference = False

normalizer = Augmentator(raw_normalizer, is_inference, conf)

loader = Loader(conf, normalizer)

print("...done")

if not only_predict:

mpi_train(conf, shot_list_train, shot_list_validate, loader)

# load last model for testing

print('saving results')

y_prime = []

y_gold = []

disruptive = []

normalizer.set_inference(True)

# TODO(KGF): check tuple unpack

(y_prime_train, y_gold_train, disruptive_train, roc_train,

loss_train) = mpi_make_predictions_and_evaluate(conf, shot_list_train,

loader, custom_path)

(y_prime_test, y_gold_test, disruptive_test, roc_test,

loss_test) = mpi_make_predictions_and_evaluate(conf, shot_list_test,

loader, custom_path)

if task_index == 0:

print('=========Summary========')

print('Train Loss: {:.3e}'.format(loss_train))

print('Train ROC: {:.4f}'.format(roc_train))

print('Test Loss: {:.3e}'.format(loss_test))

print('Test ROC: {:.4f}'.format(roc_test))

if roc_test < 0.8:

sys.exit(1)

if task_index == 0:

disruptive_train = np.array(disruptive_train)

disruptive_test = np.array(disruptive_test)

y_gold = y_gold_train + y_gold_test

y_prime = y_prime_train + y_prime_test

disruptive = np.concatenate((disruptive_train, disruptive_test))

shot_list_test.make_light()

shot_list_train.make_light()

save_str = 'results_' + datetime.datetime.now().strftime(

"%Y-%m-%d-%H-%M-%S")

result_base_path = conf['paths']['results_prepath']

if not os.path.exists(result_base_path):

os.makedirs(result_base_path)

np.savez(result_base_path+save_str, y_gold=y_gold,

y_gold_train=y_gold_train, y_gold_test=y_gold_test,

y_prime=y_prime, y_prime_train=y_prime_train,

y_prime_test=y_prime_test, disruptive=disruptive,

disruptive_train=disruptive_train,

disruptive_test=disruptive_test,

shot_list_train=shot_list_train, shot_list_test=shot_list_test,

conf=conf)

sys.stdout.flush()

if task_index == 0:

print('finished.')