Running Tune experiments with Nevergrad#

In this tutorial we introduce Nevergrad, while running a simple Ray Tune experiment. Tune’s Search Algorithms integrate with Nevergrad and, as a result, allow you to seamlessly scale up a Nevergrad optimization process - without sacrificing performance.

Nevergrad provides gradient/derivative-free optimization able to handle noise over the objective landscape, including evolutionary, bandit, and Bayesian optimization algorithms. Nevergrad internally supports search spaces which are continuous, discrete or a mixture of thereof. It also provides a library of functions on which to test the optimization algorithms and compare with other benchmarks.

In this example we minimize a simple objective to briefly demonstrate the usage of Nevergrad with Ray Tune via NevergradSearch. It’s useful to keep in mind that despite the emphasis on machine learning experiments, Ray Tune optimizes any implicit or explicit objective. Here we assume nevergrad==0.4.3.post7 library is installed. To learn more, please refer to Nevergrad website.

Necessary requirements:

pip install ray[tune] nevergrad==0.4.3.post7

Click below to see all the imports we need for this example.

/Users/kai/.pyenv/versions/3.7.7/lib/python3.7/site-packages/nevergrad/optimization/differentialevolution.py:107: InefficientSettingsWarning: DE algorithms are inefficient with budget < 60
  "DE algorithms are inefficient with budget < 60", base.errors.InefficientSettingsWarning

Let’s start by defining a simple evaluation function. We artificially sleep for a bit (0.1 seconds) to simulate a long-running ML experiment. This setup assumes that we’re running multiple steps of an experiment and try to tune two hyperparameters, namely width and height, and activation.

def evaluate(step, width, height, activation):
    time.sleep(0.1)
    activation_boost = 10 if activation=="relu" else 1
    return (0.1 + width * step / 100) ** (-1) + height * 0.1 + activation_boost

Next, our objective function takes a Tune config, evaluates the score of your experiment in a training loop, and uses tune.report to report the score back to Tune.

def objective(config):
    for step in range(config["steps"]):
        score = evaluate(step, config["width"], config["height"], config["activation"])
        tune.report({"iterations": step, "mean_loss": score})

Now we construct the hyperparameter search space using ConfigSpace

Next we define the search algorithm built from NevergradSearch, constrained to a maximum of 4 concurrent trials with a ConcurrencyLimiter. Here we use ng.optimizers.OnePlusOne, a simple evolutionary algorithm.

algo = NevergradSearch(
    optimizer=ng.optimizers.OnePlusOne,
)
algo = tune.search.ConcurrencyLimiter(algo, max_concurrent=4)

The number of samples is the number of hyperparameter combinations that will be tried out. This Tune run is set to 1000 samples. (you can decrease this if it takes too long on your machine).

num_samples = 1000

Finally, all that’s left is to define a search space.

search_config = {
    "steps": 100,
    "width": tune.uniform(0, 20),
    "height": tune.uniform(-100, 100),
    "activation": tune.choice(["relu, tanh"])
}

Finally, we run the experiment to "min"imize the “mean_loss” of the objective by searching search_space via algo, num_samples times. This previous sentence is fully characterizes the search problem we aim to solve. With this in mind, observe how efficient it is to execute tuner.fit().

tuner = tune.Tuner(
    objective,
    tune_config=tune.TuneConfig(
        metric="mean_loss",
        mode="min",
        search_alg=algo,
        num_samples=num_samples,
    ),
    param_space=search_config,
)
results = tuner.fit()

WARNING:ray.tune.trainable.function_trainable:

== Status ==
Current time: 2022-07-22 15:24:44 (running for 00:00:43.69)
Memory usage on this node: 10.4/16.0 GiB
Using FIFO scheduling algorithm.
Resources requested: 0/16 CPUs, 0/0 GPUs, 0.0/4.61 GiB heap, 0.0/2.0 GiB objects
Current best trial: 004f499a with mean_loss=-7.595329711238255 and parameters={'steps': 100, 'width': 2.1174116156230918, 'height': -90.50653873694615, 'activation': 'relu, tanh'}
Result logdir: /Users/kai/ray_results/objective_2022-07-22_15-23-59
Number of trials: 10/10 (10 TERMINATED)

Trial name	status	loc	activation	height	width	loss	iter	total time (s)	iterations	neg_mean_loss
objective_ee2ca136	TERMINATED	127.0.0.1:46434	relu, tanh	0	10	1.1	100	10.942	99	-1.1
objective_efe1626e	TERMINATED	127.0.0.1:46441	relu, tanh	-31.0013	9.28761	-1.99254	100	11.5354	99	1.99254
objective_efe34e4e	TERMINATED	127.0.0.1:46442	relu, tanh	5.21403	9.48974	1.62672	100	11.6606	99	-1.62672
objective_efe55c2a	TERMINATED	127.0.0.1:46443	relu, tanh	-20.8721	11.3958	-0.99935	100	11.6083	99	0.99935
objective_f6688086	TERMINATED	127.0.0.1:46467	relu, tanh	57.2829	17.7296	6.78493	100	10.716	99	-6.78493
objective_f85ed926	TERMINATED	127.0.0.1:46478	relu, tanh	40.5543	19.0813	5.10809	100	10.7158	99	-5.10809
objective_f86ee276	TERMINATED	127.0.0.1:46481	relu, tanh	93.8686	1.60757	10.9781	100	10.7415	99	-10.9781
objective_f880a02e	TERMINATED	127.0.0.1:46484	relu, tanh	-80.5769	5.84852	-6.88791	100	10.7335	99	6.88791
objective_fe4e7a44	TERMINATED	127.0.0.1:46499	relu, tanh	9.62911	0.622909	3.35823	100	13.1428	99	-3.35823
objective_004f499a	TERMINATED	127.0.0.1:46504	relu, tanh	-90.5065	2.11741	-7.59533	100	10.7688	99	7.59533

INFO:ray._private.runtime_env.plugin_schema_manager:Loading the default runtime env schemas: ['/Users/kai/coding/ray/python/ray/_private/runtime_env/../../runtime_env/schemas/working_dir_schema.json', '/Users/kai/coding/ray/python/ray/_private/runtime_env/../../runtime_env/schemas/pip_schema.json'].

Result for objective_ee2ca136:
  date: 2022-07-22_15-24-03
  done: false
  experiment_id: c0ad5ddb78cc4cc88e8195f5bde34e20
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 11.0
  neg_mean_loss: -11.0
  node_ip: 127.0.0.1
  pid: 46434
  time_since_restore: 0.10390329360961914
  time_this_iter_s: 0.10390329360961914
  time_total_s: 0.10390329360961914
  timestamp: 1658499843
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: ee2ca136
  warmup_time: 0.003058910369873047
  
Result for objective_efe1626e:
  date: 2022-07-22_15-24-06
  done: false
  experiment_id: c6d33a9a30c040c0929b657f1d3e1557
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 7.899868000941147
  neg_mean_loss: -7.899868000941147
  node_ip: 127.0.0.1
  pid: 46441
  time_since_restore: 0.10202908515930176
  time_this_iter_s: 0.10202908515930176
  time_total_s: 0.10202908515930176
  timestamp: 1658499846
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: efe1626e
  warmup_time: 0.003210783004760742
  
Result for objective_efe55c2a:
  date: 2022-07-22_15-24-06
  done: false
  experiment_id: 903e9605ba894aa0bc55297229b8a77b
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 8.91279068144465
  neg_mean_loss: -8.91279068144465
  node_ip: 127.0.0.1
  pid: 46443
  time_since_restore: 0.1029670238494873
  time_this_iter_s: 0.1029670238494873
  time_total_s: 0.1029670238494873
  timestamp: 1658499846
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: efe55c2a
  warmup_time: 0.0031630992889404297
  
Result for objective_efe34e4e:
  date: 2022-07-22_15-24-06
  done: false
  experiment_id: 1efbb9c1becb436e8f304b61e9edd61b
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 11.521403250268252
  neg_mean_loss: -11.521403250268252
  node_ip: 127.0.0.1
  pid: 46442
  time_since_restore: 0.10443997383117676
  time_this_iter_s: 0.10443997383117676
  time_total_s: 0.10443997383117676
  timestamp: 1658499846
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: efe34e4e
  warmup_time: 0.002650022506713867
  
Result for objective_ee2ca136:
  date: 2022-07-22_15-24-08
  done: false
  experiment_id: c0ad5ddb78cc4cc88e8195f5bde34e20
  hostname: Kais-MacBook-Pro.local
  iterations: 45
  iterations_since_restore: 46
  mean_loss: 1.2173913043478262
  neg_mean_loss: -1.2173913043478262
  node_ip: 127.0.0.1
  pid: 46434
  time_since_restore: 5.145823955535889
  time_this_iter_s: 0.10791492462158203
  time_total_s: 5.145823955535889
  timestamp: 1658499848
  timesteps_since_restore: 0
  training_iteration: 46
  trial_id: ee2ca136
  warmup_time: 0.003058910369873047
  
Result for objective_efe1626e:
  date: 2022-07-22_15-24-11
  done: false
  experiment_id: c6d33a9a30c040c0929b657f1d3e1557
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: -1.8761766831351419
  neg_mean_loss: 1.8761766831351419
  node_ip: 127.0.0.1
  pid: 46441
  time_since_restore: 5.138395071029663
  time_this_iter_s: 0.10561490058898926
  time_total_s: 5.138395071029663
  timestamp: 1658499851
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: efe1626e
  warmup_time: 0.003210783004760742
  
Result for objective_efe55c2a:
  date: 2022-07-22_15-24-11
  done: false
  experiment_id: 903e9605ba894aa0bc55297229b8a77b
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: -0.9039251143764186
  neg_mean_loss: 0.9039251143764186
  node_ip: 127.0.0.1
  pid: 46443
  time_since_restore: 5.145689249038696
  time_this_iter_s: 0.10677504539489746
  time_total_s: 5.145689249038696
  timestamp: 1658499851
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: efe55c2a
  warmup_time: 0.0031630992889404297
  
Result for objective_efe34e4e:
  date: 2022-07-22_15-24-11
  done: false
  experiment_id: 1efbb9c1becb436e8f304b61e9edd61b
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 1.7406930109818743
  neg_mean_loss: -1.7406930109818743
  node_ip: 127.0.0.1
  pid: 46442
  time_since_restore: 5.151263952255249
  time_this_iter_s: 0.10529589653015137
  time_total_s: 5.151263952255249
  timestamp: 1658499851
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: efe34e4e
  warmup_time: 0.002650022506713867
  
Result for objective_ee2ca136:
  date: 2022-07-22_15-24-13
  done: false
  experiment_id: c0ad5ddb78cc4cc88e8195f5bde34e20
  hostname: Kais-MacBook-Pro.local
  iterations: 92
  iterations_since_restore: 93
  mean_loss: 1.10752688172043
  neg_mean_loss: -1.10752688172043
  node_ip: 127.0.0.1
  pid: 46434
  time_since_restore: 10.185918092727661
  time_this_iter_s: 0.10853385925292969
  time_total_s: 10.185918092727661
  timestamp: 1658499853
  timesteps_since_restore: 0
  training_iteration: 93
  trial_id: ee2ca136
  warmup_time: 0.003058910369873047
  
Result for objective_ee2ca136:
  date: 2022-07-22_15-24-14
  done: true
  experiment_id: c0ad5ddb78cc4cc88e8195f5bde34e20
  experiment_tag: 1_activation=relu_tanh,height=0.0000,steps=100,width=10.0000
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 1.1
  neg_mean_loss: -1.1
  node_ip: 127.0.0.1
  pid: 46434
  time_since_restore: 10.941971063613892
  time_this_iter_s: 0.10557413101196289
  time_total_s: 10.941971063613892
  timestamp: 1658499854
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: ee2ca136
  warmup_time: 0.003058910369873047
  
Result for objective_efe34e4e:
  date: 2022-07-22_15-24-16
  done: false
  experiment_id: 1efbb9c1becb436e8f304b61e9edd61b
  hostname: Kais-MacBook-Pro.local
  iterations: 90
  iterations_since_restore: 91
  mean_loss: 1.63713376556457
  neg_mean_loss: -1.63713376556457
  node_ip: 127.0.0.1
  pid: 46442
  time_since_restore: 9.770322799682617
  time_this_iter_s: 0.1040806770324707
  time_total_s: 9.770322799682617
  timestamp: 1658499856
  timesteps_since_restore: 0
  training_iteration: 91
  trial_id: efe34e4e
  warmup_time: 0.002650022506713867
  
Result for objective_efe1626e:
  date: 2022-07-22_15-24-16
  done: false
  experiment_id: c6d33a9a30c040c0929b657f1d3e1557
  hostname: Kais-MacBook-Pro.local
  iterations: 92
  iterations_since_restore: 93
  mean_loss: -1.9844528559710652
  neg_mean_loss: 1.9844528559710652
  node_ip: 127.0.0.1
  pid: 46441
  time_since_restore: 9.955276012420654
  time_this_iter_s: 0.10721087455749512
  time_total_s: 9.955276012420654
  timestamp: 1658499856
  timesteps_since_restore: 0
  training_iteration: 93
  trial_id: efe1626e
  warmup_time: 0.003210783004760742
  
Result for objective_efe55c2a:
  date: 2022-07-22_15-24-16
  done: false
  experiment_id: 903e9605ba894aa0bc55297229b8a77b
  hostname: Kais-MacBook-Pro.local
  iterations: 91
  iterations_since_restore: 92
  mean_loss: -0.991699632507838
  neg_mean_loss: 0.991699632507838
  node_ip: 127.0.0.1
  pid: 46443
  time_since_restore: 9.83866286277771
  time_this_iter_s: 0.10593676567077637
  time_total_s: 9.83866286277771
  timestamp: 1658499856
  timesteps_since_restore: 0
  training_iteration: 92
  trial_id: efe55c2a
  warmup_time: 0.0031630992889404297
  
Result for objective_f6688086:
  date: 2022-07-22_15-24-17
  done: false
  experiment_id: aa090556819b41c5b1e93d761dc9311a
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 16.728285222315503
  neg_mean_loss: -16.728285222315503
  node_ip: 127.0.0.1
  pid: 46467
  time_since_restore: 0.10288572311401367
  time_this_iter_s: 0.10288572311401367
  time_total_s: 0.10288572311401367
  timestamp: 1658499857
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: f6688086
  warmup_time: 0.002875089645385742
  
Result for objective_efe1626e:
  date: 2022-07-22_15-24-17
  done: true
  experiment_id: c6d33a9a30c040c0929b657f1d3e1557
  experiment_tag: 2_activation=relu_tanh,height=-31.0013,steps=100,width=9.2876
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: -1.9925441896649678
  neg_mean_loss: 1.9925441896649678
  node_ip: 127.0.0.1
  pid: 46441
  time_since_restore: 11.535439252853394
  time_this_iter_s: 0.10611414909362793
  time_total_s: 11.535439252853394
  timestamp: 1658499857
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: efe1626e
  warmup_time: 0.003210783004760742
  
Result for objective_efe55c2a:
  date: 2022-07-22_15-24-17
  done: true
  experiment_id: 903e9605ba894aa0bc55297229b8a77b
  experiment_tag: 4_activation=relu_tanh,height=-20.8721,steps=100,width=11.3958
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: -0.9993497773424045
  neg_mean_loss: 0.9993497773424045
  node_ip: 127.0.0.1
  pid: 46443
  time_since_restore: 11.608299970626831
  time_this_iter_s: 0.10889291763305664
  time_total_s: 11.608299970626831
  timestamp: 1658499857
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: efe55c2a
  warmup_time: 0.0031630992889404297
  

Result for objective_efe34e4e:
  date: 2022-07-22_15-24-18
  done: true
  experiment_id: 1efbb9c1becb436e8f304b61e9edd61b
  experiment_tag: 3_activation=relu_tanh,height=5.2140,steps=100,width=9.4897
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 1.6267236167220034
  neg_mean_loss: -1.6267236167220034
  node_ip: 127.0.0.1
  pid: 46442
  time_since_restore: 11.660571098327637
  time_this_iter_s: 0.1082301139831543
  time_total_s: 11.660571098327637
  timestamp: 1658499858
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: efe34e4e
  warmup_time: 0.002650022506713867
  
Result for objective_f85ed926:
  date: 2022-07-22_15-24-20
  done: false
  experiment_id: 402684968ef24377ae7787c9af50d3ae
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 15.055429995999226
  neg_mean_loss: -15.055429995999226
  node_ip: 127.0.0.1
  pid: 46478
  time_since_restore: 0.10394287109375
  time_this_iter_s: 0.10394287109375
  time_total_s: 0.10394287109375
  timestamp: 1658499860
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: f85ed926
  warmup_time: 0.0031621456146240234
  
Result for objective_f86ee276:
  date: 2022-07-22_15-24-20
  done: false
  experiment_id: cbdc4d94c3d64e59aa53e4465349dbe1
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 20.386860838650087
  neg_mean_loss: -20.386860838650087
  node_ip: 127.0.0.1
  pid: 46481
  time_since_restore: 0.10312676429748535
  time_this_iter_s: 0.10312676429748535
  time_total_s: 0.10312676429748535
  timestamp: 1658499860
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: f86ee276
  warmup_time: 0.002810955047607422
  
Result for objective_f880a02e:
  date: 2022-07-22_15-24-20
  done: false
  experiment_id: fb5af0209b2b45eda67ab40960a48a99
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 2.94231225430282
  neg_mean_loss: -2.94231225430282
  node_ip: 127.0.0.1
  pid: 46484
  time_since_restore: 0.10325503349304199
  time_this_iter_s: 0.10325503349304199
  time_total_s: 0.10325503349304199
  timestamp: 1658499860
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: f880a02e
  warmup_time: 0.0027141571044921875
  
Result for objective_f6688086:
  date: 2022-07-22_15-24-22
  done: false
  experiment_id: aa090556819b41c5b1e93d761dc9311a
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 6.846867893893624
  neg_mean_loss: -6.846867893893624
  node_ip: 127.0.0.1
  pid: 46467
  time_since_restore: 5.122231721878052
  time_this_iter_s: 0.10641169548034668
  time_total_s: 5.122231721878052
  timestamp: 1658499862
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: f6688086
  warmup_time: 0.002875089645385742
  
Result for objective_f85ed926:
  date: 2022-07-22_15-24-25
  done: false
  experiment_id: 402684968ef24377ae7787c9af50d3ae
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 5.1657053480548045
  neg_mean_loss: -5.1657053480548045
  node_ip: 127.0.0.1
  pid: 46478
  time_since_restore: 5.151860952377319
  time_this_iter_s: 0.10704493522644043
  time_total_s: 5.151860952377319
  timestamp: 1658499865
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: f85ed926
  warmup_time: 0.0031621456146240234
  
Result for objective_f86ee276:
  date: 2022-07-22_15-24-25
  done: false
  experiment_id: cbdc4d94c3d64e59aa53e4465349dbe1
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 11.55568804118157
  neg_mean_loss: -11.55568804118157
  node_ip: 127.0.0.1
  pid: 46481
  time_since_restore: 5.140729665756226
  time_this_iter_s: 0.1076810359954834
  time_total_s: 5.140729665756226
  timestamp: 1658499865
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: f86ee276
  warmup_time: 0.002810955047607422
  
Result for objective_f880a02e:
  date: 2022-07-22_15-24-25
  done: false
  experiment_id: fb5af0209b2b45eda67ab40960a48a99
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: -6.706663109525936
  neg_mean_loss: 6.706663109525936
  node_ip: 127.0.0.1
  pid: 46484
  time_since_restore: 5.157264947891235
  time_this_iter_s: 0.1107029914855957
  time_total_s: 5.157264947891235
  timestamp: 1658499865
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: f880a02e
  warmup_time: 0.0027141571044921875
  
Result for objective_f6688086:
  date: 2022-07-22_15-24-27
  done: false
  experiment_id: aa090556819b41c5b1e93d761dc9311a
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: 6.787930201151392
  neg_mean_loss: -6.787930201151392
  node_ip: 127.0.0.1
  pid: 46467
  time_since_restore: 10.178911924362183
  time_this_iter_s: 0.10588788986206055
  time_total_s: 10.178911924362183
  timestamp: 1658499867
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: f6688086
  warmup_time: 0.002875089645385742
  
Result for objective_f6688086:
  date: 2022-07-22_15-24-27
  done: true
  experiment_id: aa090556819b41c5b1e93d761dc9311a
  experiment_tag: 5_activation=relu_tanh,height=57.2829,steps=100,width=17.7296
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 6.784934893475021
  neg_mean_loss: -6.784934893475021
  node_ip: 127.0.0.1
  pid: 46467
  time_since_restore: 10.71599006652832
  time_this_iter_s: 0.10760498046875
  time_total_s: 10.71599006652832
  timestamp: 1658499867
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: f6688086
  warmup_time: 0.002875089645385742
  
Result for objective_fe4e7a44:
  date: 2022-07-22_15-24-30
  done: false
  experiment_id: 95711fcb897a4f9fae3ebd811619fba9
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 11.962911259228687
  neg_mean_loss: -11.962911259228687
  node_ip: 127.0.0.1
  pid: 46499
  time_since_restore: 0.10338783264160156
  time_this_iter_s: 0.10338783264160156
  time_total_s: 0.10338783264160156
  timestamp: 1658499870
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: fe4e7a44
  warmup_time: 0.002811908721923828
  
Result for objective_f85ed926:
  date: 2022-07-22_15-24-30
  done: false
  experiment_id: 402684968ef24377ae7787c9af50d3ae
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: 5.110873373928027
  neg_mean_loss: -5.110873373928027
  node_ip: 127.0.0.1
  pid: 46478
  time_since_restore: 10.178997039794922
  time_this_iter_s: 0.10618400573730469
  time_total_s: 10.178997039794922
  timestamp: 1658499870
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: f85ed926
  warmup_time: 0.0031621456146240234
  
Result for objective_f86ee276:
  date: 2022-07-22_15-24-30
  done: false
  experiment_id: cbdc4d94c3d64e59aa53e4465349dbe1
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: 11.007548256848812
  neg_mean_loss: -11.007548256848812
  node_ip: 127.0.0.1
  pid: 46481
  time_since_restore: 10.165759801864624
  time_this_iter_s: 0.10771489143371582
  time_total_s: 10.165759801864624
  timestamp: 1658499870
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: f86ee276
  warmup_time: 0.002810955047607422
  
Result for objective_f880a02e:
  date: 2022-07-22_15-24-30
  done: false
  experiment_id: fb5af0209b2b45eda67ab40960a48a99
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: -6.87903993853598
  neg_mean_loss: 6.87903993853598
  node_ip: 127.0.0.1
  pid: 46484
  time_since_restore: 10.188904047012329
  time_this_iter_s: 0.10939908027648926
  time_total_s: 10.188904047012329
  timestamp: 1658499870
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: f880a02e
  warmup_time: 0.0027141571044921875
  
Result for objective_f85ed926:
  date: 2022-07-22_15-24-31
  done: true
  experiment_id: 402684968ef24377ae7787c9af50d3ae
  experiment_tag: 6_activation=relu_tanh,height=40.5543,steps=100,width=19.0813
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 5.108087948450606
  neg_mean_loss: -5.108087948450606
  node_ip: 127.0.0.1
  pid: 46478
  time_since_restore: 10.71581220626831
  time_this_iter_s: 0.10749602317810059
  time_total_s: 10.71581220626831
  timestamp: 1658499871
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: f85ed926
  warmup_time: 0.0031621456146240234
  

Result for objective_f86ee276:
  date: 2022-07-22_15-24-31
  done: true
  experiment_id: cbdc4d94c3d64e59aa53e4465349dbe1
  experiment_tag: 7_activation=relu_tanh,height=93.8686,steps=100,width=1.6076
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 10.978053669828887
  neg_mean_loss: -10.978053669828887
  node_ip: 127.0.0.1
  pid: 46481
  time_since_restore: 10.741472005844116
  time_this_iter_s: 0.1456291675567627
  time_total_s: 10.741472005844116
  timestamp: 1658499871
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: f86ee276
  warmup_time: 0.002810955047607422
  
Result for objective_f880a02e:
  date: 2022-07-22_15-24-31
  done: true
  experiment_id: fb5af0209b2b45eda67ab40960a48a99
  experiment_tag: 8_activation=relu_tanh,height=-80.5769,steps=100,width=5.8485
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: -6.887909370541976
  neg_mean_loss: 6.887909370541976
  node_ip: 127.0.0.1
  pid: 46484
  time_since_restore: 10.733515977859497
  time_this_iter_s: 0.1060791015625
  time_total_s: 10.733515977859497
  timestamp: 1658499871
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: f880a02e
  warmup_time: 0.0027141571044921875
  
Result for objective_004f499a:
  date: 2022-07-22_15-24-33
  done: false
  experiment_id: c3015ffd206444cd9c2eb1152aae5dd0
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 1.9493461263053842
  neg_mean_loss: -1.9493461263053842
  node_ip: 127.0.0.1
  pid: 46504
  time_since_restore: 0.1044008731842041
  time_this_iter_s: 0.1044008731842041
  time_total_s: 0.1044008731842041
  timestamp: 1658499873
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 004f499a
  warmup_time: 0.0026237964630126953
  
Result for objective_fe4e7a44:
  date: 2022-07-22_15-24-35
  done: false
  experiment_id: 95711fcb897a4f9fae3ebd811619fba9
  hostname: Kais-MacBook-Pro.local
  iterations: 25
  iterations_since_restore: 26
  mean_loss: 5.873327389463485
  neg_mean_loss: -5.873327389463485
  node_ip: 127.0.0.1
  pid: 46499
  time_since_restore: 5.199802875518799
  time_this_iter_s: 0.1075749397277832
  time_total_s: 5.199802875518799
  timestamp: 1658499875
  timesteps_since_restore: 0
  training_iteration: 26
  trial_id: fe4e7a44
  warmup_time: 0.002811908721923828
  
Result for objective_004f499a:
  date: 2022-07-22_15-24-38
  done: false
  experiment_id: c3015ffd206444cd9c2eb1152aae5dd0
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: -7.137564846035238
  neg_mean_loss: 7.137564846035238
  node_ip: 127.0.0.1
  pid: 46504
  time_since_restore: 5.15981912612915
  time_this_iter_s: 0.10737729072570801
  time_total_s: 5.15981912612915
  timestamp: 1658499878
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 004f499a
  warmup_time: 0.0026237964630126953
  
Result for objective_fe4e7a44:
  date: 2022-07-22_15-24-40
  done: false
  experiment_id: 95711fcb897a4f9fae3ebd811619fba9
  hostname: Kais-MacBook-Pro.local
  iterations: 72
  iterations_since_restore: 73
  mean_loss: 3.7860835740628094
  neg_mean_loss: -3.7860835740628094
  node_ip: 127.0.0.1
  pid: 46499
  time_since_restore: 10.234857082366943
  time_this_iter_s: 0.10819101333618164
  time_total_s: 10.234857082366943
  timestamp: 1658499880
  timesteps_since_restore: 0
  training_iteration: 73
  trial_id: fe4e7a44
  warmup_time: 0.002811908721923828
  
Result for objective_fe4e7a44:
  date: 2022-07-22_15-24-43
  done: true
  experiment_id: 95711fcb897a4f9fae3ebd811619fba9
  experiment_tag: 9_activation=relu_tanh,height=9.6291,steps=100,width=0.6229
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 3.3582342398877607
  neg_mean_loss: -3.3582342398877607
  node_ip: 127.0.0.1
  pid: 46499
  time_since_restore: 13.142819166183472
  time_this_iter_s: 0.10675215721130371
  time_total_s: 13.142819166183472
  timestamp: 1658499883
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: fe4e7a44
  warmup_time: 0.002811908721923828
  
Result for objective_004f499a:
  date: 2022-07-22_15-24-43
  done: false
  experiment_id: c3015ffd206444cd9c2eb1152aae5dd0
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: -7.572268959036313
  neg_mean_loss: 7.572268959036313
  node_ip: 127.0.0.1
  pid: 46504
  time_since_restore: 10.228418827056885
  time_this_iter_s: 0.10715484619140625
  time_total_s: 10.228418827056885
  timestamp: 1658499883
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: 004f499a
  warmup_time: 0.0026237964630126953
  
Result for objective_004f499a:
  date: 2022-07-22_15-24-44
  done: true
  experiment_id: c3015ffd206444cd9c2eb1152aae5dd0
  experiment_tag: 10_activation=relu_tanh,height=-90.5065,steps=100,width=2.1174
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: -7.595329711238255
  neg_mean_loss: 7.595329711238255
  node_ip: 127.0.0.1
  pid: 46504
  time_since_restore: 10.768790006637573
  time_this_iter_s: 0.10774111747741699
  time_total_s: 10.768790006637573
  timestamp: 1658499884
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 004f499a
  warmup_time: 0.0026237964630126953
  

INFO:ray.tune.tune:Total run time: 44.70 seconds (43.68 seconds for the tuning loop).

Here are the hyperparameters found to minimize the mean loss of the defined objective.

print("Best hyperparameters found were: ", results.get_best_result().config)

Best hyperparameters found were:  {'steps': 100, 'width': 2.1174116156230918, 'height': -90.50653873694615, 'activation': 'relu, tanh'}

Optional: passing the (hyper)parameter space into the search algorithm#

We can also pass the search space into NevergradSearch using their designed format.

space = ng.p.Dict(
    width=ng.p.Scalar(lower=0, upper=20),
    height=ng.p.Scalar(lower=-100, upper=100),
    activation=ng.p.Choice(choices=["relu", "tanh"])
)

algo = NevergradSearch(
    optimizer=ng.optimizers.OnePlusOne,
    space=space,
    metric="mean_loss",
    mode="min"
)
algo = tune.search.ConcurrencyLimiter(algo, max_concurrent=4)

Again we run the experiment, this time with a less passed via the config and instead passed through search_alg.

tuner = tune.Tuner(
    objective,
    tune_config=tune.TuneConfig(
#         metric="mean_loss",
#         mode="min",
        search_alg=algo,
        num_samples=num_samples,
    ),
    param_space={"steps": 100},
)
results = tuner.fit()

== Status ==
Current time: 2022-07-22 15:25:27 (running for 00:00:43.22)
Memory usage on this node: 10.8/16.0 GiB
Using FIFO scheduling algorithm.
Resources requested: 0/16 CPUs, 0/0 GPUs, 0.0/4.61 GiB heap, 0.0/2.0 GiB objects
Result logdir: /Users/kai/ray_results/objective_2022-07-22_15-24-44
Number of trials: 10/10 (10 TERMINATED)

Trial name	status	loc	activation	height	width	loss	iter	total time (s)	iterations	neg_mean_loss
objective_085274be	TERMINATED	127.0.0.1:46516	tanh	0	10	1.1	100	10.7324	99	-1.1
objective_09dee4f2	TERMINATED	127.0.0.1:46524	tanh	-44.4216	12.9653	-3.36485	100	11.3476	99	3.36485
objective_09e0846a	TERMINATED	127.0.0.1:46525	relu	-38.0638	11.1574	6.28334	100	11.3103	99	-6.28334
objective_09e21122	TERMINATED	127.0.0.1:46526	relu	41.2509	9.75585	14.2276	100	11.3512	99	-14.2276
objective_1045958e	TERMINATED	127.0.0.1:46544	relu	-73.2818	5.78832	2.84334	100	10.7372	99	-2.84334
objective_12309db2	TERMINATED	127.0.0.1:46549	relu	-94.9666	16.9764	0.562486	100	10.7329	99	-0.562486
objective_12342770	TERMINATED	127.0.0.1:46550	tanh	-98.0775	17.2252	-8.74945	100	10.7455	99	8.74945
objective_12374d7e	TERMINATED	127.0.0.1:46551	relu	-1.60759	18.0841	9.89479	100	10.7348	99	-9.89479
objective_18344524	TERMINATED	127.0.0.1:46569	tanh	-41.1284	12.2952	-3.03135	100	12.622	99	3.03135
objective_1a1e29b8	TERMINATED	127.0.0.1:46576	tanh	64.0289	10.0482	7.50242	100	10.8237	99	-7.50242

Result for objective_085274be:
  date: 2022-07-22_15-24-47
  done: false
  experiment_id: be25590fb790400ca28b548b8359a120
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 11.0
  neg_mean_loss: -11.0
  node_ip: 127.0.0.1
  pid: 46516
  time_since_restore: 0.10224103927612305
  time_this_iter_s: 0.10224103927612305
  time_total_s: 0.10224103927612305
  timestamp: 1658499887
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 085274be
  warmup_time: 0.0029327869415283203
  
Result for objective_09dee4f2:
  date: 2022-07-22_15-24-49
  done: false
  experiment_id: 9469ffc8df11476db00e329acd2ae8b6
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 6.557843114006006
  neg_mean_loss: -6.557843114006006
  node_ip: 127.0.0.1
  pid: 46524
  time_since_restore: 0.10509586334228516
  time_this_iter_s: 0.10509586334228516
  time_total_s: 0.10509586334228516
  timestamp: 1658499889
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 09dee4f2
  warmup_time: 0.002938985824584961
  
Result for objective_09e21122:
  date: 2022-07-22_15-24-49
  done: false
  experiment_id: 0a825198482b4bd4aded6c318dff0dcf
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 24.125094234750687
  neg_mean_loss: -24.125094234750687
  node_ip: 127.0.0.1
  pid: 46526
  time_since_restore: 0.10476112365722656
  time_this_iter_s: 0.10476112365722656
  time_total_s: 0.10476112365722656
  timestamp: 1658499889
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 09e21122
  warmup_time: 0.003228902816772461
  
Result for objective_09e0846a:
  date: 2022-07-22_15-24-49
  done: false
  experiment_id: 260410fc1fb24f78af507cd38a8361a9
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 16.193619847512025
  neg_mean_loss: -16.193619847512025
  node_ip: 127.0.0.1
  pid: 46525
  time_since_restore: 0.10422873497009277
  time_this_iter_s: 0.10422873497009277
  time_total_s: 0.10422873497009277
  timestamp: 1658499889
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 09e0846a
  warmup_time: 0.002719879150390625
  
Result for objective_085274be:
  date: 2022-07-22_15-24-52
  done: false
  experiment_id: be25590fb790400ca28b548b8359a120
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 1.2083333333333333
  neg_mean_loss: -1.2083333333333333
  node_ip: 127.0.0.1
  pid: 46516
  time_since_restore: 5.132040977478027
  time_this_iter_s: 0.1084139347076416
  time_total_s: 5.132040977478027
  timestamp: 1658499892
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 085274be
  warmup_time: 0.0029327869415283203
  
Result for objective_09dee4f2:
  date: 2022-07-22_15-24-54
  done: false
  experiment_id: 9469ffc8df11476db00e329acd2ae8b6
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: -3.280701838145472
  neg_mean_loss: 3.280701838145472
  node_ip: 127.0.0.1
  pid: 46524
  time_since_restore: 5.134023189544678
  time_this_iter_s: 0.10428118705749512
  time_total_s: 5.134023189544678
  timestamp: 1658499894
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 09dee4f2
  warmup_time: 0.002938985824584961
  
Result for objective_09e21122:
  date: 2022-07-22_15-24-54
  done: false
  experiment_id: 0a825198482b4bd4aded6c318dff0dcf
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 14.33852997141215
  neg_mean_loss: -14.33852997141215
  node_ip: 127.0.0.1
  pid: 46526
  time_since_restore: 5.139041185379028
  time_this_iter_s: 0.10721492767333984
  time_total_s: 5.139041185379028
  timestamp: 1658499894
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 09e21122
  warmup_time: 0.003228902816772461
  
Result for objective_09e0846a:
  date: 2022-07-22_15-24-54
  done: false
  experiment_id: 260410fc1fb24f78af507cd38a8361a9
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 6.3807469650477024
  neg_mean_loss: -6.3807469650477024
  node_ip: 127.0.0.1
  pid: 46525
  time_since_restore: 5.149268865585327
  time_this_iter_s: 0.10705304145812988
  time_total_s: 5.149268865585327
  timestamp: 1658499894
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 09e0846a
  warmup_time: 0.002719879150390625
  
Result for objective_085274be:
  date: 2022-07-22_15-24-57
  done: false
  experiment_id: be25590fb790400ca28b548b8359a120
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: 1.1052631578947367
  neg_mean_loss: -1.1052631578947367
  node_ip: 127.0.0.1
  pid: 46516
  time_since_restore: 10.194181203842163
  time_this_iter_s: 0.10754203796386719
  time_total_s: 10.194181203842163
  timestamp: 1658499897
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: 085274be
  warmup_time: 0.0029327869415283203
  
Result for objective_085274be:
  date: 2022-07-22_15-24-57
  done: true
  experiment_id: be25590fb790400ca28b548b8359a120
  experiment_tag: 1_activation=tanh,height=0.0000,steps=100,width=10.0000
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 1.1
  neg_mean_loss: -1.1
  node_ip: 127.0.0.1
  pid: 46516
  time_since_restore: 10.732417106628418
  time_this_iter_s: 0.10759997367858887
  time_total_s: 10.732417106628418
  timestamp: 1658499897
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 085274be
  warmup_time: 0.0029327869415283203
  
Result for objective_09dee4f2:
  date: 2022-07-22_15-24-59
  done: false
  experiment_id: 9469ffc8df11476db00e329acd2ae8b6
  hostname: Kais-MacBook-Pro.local
  iterations: 93
  iterations_since_restore: 94
  mean_loss: -3.3599044605358728
  neg_mean_loss: 3.3599044605358728
  node_ip: 127.0.0.1
  pid: 46524
  time_since_restore: 10.055138111114502
  time_this_iter_s: 0.10467100143432617
  time_total_s: 10.055138111114502
  timestamp: 1658499899
  timesteps_since_restore: 0
  training_iteration: 94
  trial_id: 09dee4f2
  warmup_time: 0.002938985824584961
  
Result for objective_09e21122:
  date: 2022-07-22_15-24-59
  done: false
  experiment_id: 0a825198482b4bd4aded6c318dff0dcf
  hostname: Kais-MacBook-Pro.local
  iterations: 93
  iterations_since_restore: 94
  mean_loss: 14.23411049568083
  neg_mean_loss: -14.23411049568083
  node_ip: 127.0.0.1
  pid: 46526
  time_since_restore: 10.066343307495117
  time_this_iter_s: 0.1061861515045166
  time_total_s: 10.066343307495117
  timestamp: 1658499899
  timesteps_since_restore: 0
  training_iteration: 94
  trial_id: 09e21122
  warmup_time: 0.003228902816772461
  
Result for objective_09e0846a:
  date: 2022-07-22_15-24-59
  done: false
  experiment_id: 260410fc1fb24f78af507cd38a8361a9
  hostname: Kais-MacBook-Pro.local
  iterations: 93
  iterations_since_restore: 94
  mean_loss: 6.2890729561522765
  neg_mean_loss: -6.2890729561522765
  node_ip: 127.0.0.1
  pid: 46525
  time_since_restore: 10.100499868392944
  time_this_iter_s: 0.10625505447387695
  time_total_s: 10.100499868392944
  timestamp: 1658499899
  timesteps_since_restore: 0
  training_iteration: 94
  trial_id: 09e0846a
  warmup_time: 0.002719879150390625
  
Result for objective_1045958e:
  date: 2022-07-22_15-25-00
  done: false
  experiment_id: 3579bfc2b346424b833f82f23d459807
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 12.671822501738296
  neg_mean_loss: -12.671822501738296
  node_ip: 127.0.0.1
  pid: 46544
  time_since_restore: 0.10491013526916504
  time_this_iter_s: 0.10491013526916504
  time_total_s: 0.10491013526916504
  timestamp: 1658499900
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 1045958e
  warmup_time: 0.002847909927368164
  
Result for objective_09dee4f2:
  date: 2022-07-22_15-25-01
  done: true
  experiment_id: 9469ffc8df11476db00e329acd2ae8b6
  experiment_tag: 2_activation=tanh,height=-44.4216,steps=100,width=12.9653
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: -3.3648509190285747
  neg_mean_loss: 3.3648509190285747
  node_ip: 127.0.0.1
  pid: 46524
  time_since_restore: 11.347625017166138
  time_this_iter_s: 0.10793185234069824
  time_total_s: 11.347625017166138
  timestamp: 1658499901
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 09dee4f2
  warmup_time: 0.002938985824584961
  
Result for objective_09e0846a:
  date: 2022-07-22_15-25-01
  done: true
  experiment_id: 260410fc1fb24f78af507cd38a8361a9
  experiment_tag: 3_activation=relu,height=-38.0638,steps=100,width=11.1574
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 6.28333982260153
  neg_mean_loss: -6.28333982260153
  node_ip: 127.0.0.1
  pid: 46525
  time_since_restore: 11.310342788696289
  time_this_iter_s: 0.10942316055297852
  time_total_s: 11.310342788696289
  timestamp: 1658499901
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 09e0846a
  warmup_time: 0.002719879150390625
  
Result for objective_09e21122:
  date: 2022-07-22_15-25-01
  done: true
  experiment_id: 0a825198482b4bd4aded6c318dff0dcf
  experiment_tag: 4_activation=relu,height=41.2509,steps=100,width=9.7559
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 14.22757115653867
  neg_mean_loss: -14.22757115653867
  node_ip: 127.0.0.1
  pid: 46526
  time_since_restore: 11.351194143295288
  time_this_iter_s: 0.10791015625
  time_total_s: 11.351194143295288
  timestamp: 1658499901
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 09e21122
  warmup_time: 0.003228902816772461
  

Result for objective_12309db2:
  date: 2022-07-22_15-25-03
  done: false
  experiment_id: 3915d19b775c4ee1843b5dcf79560a93
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 10.503337773185708
  neg_mean_loss: -10.503337773185708
  node_ip: 127.0.0.1
  pid: 46549
  time_since_restore: 0.10407328605651855
  time_this_iter_s: 0.10407328605651855
  time_total_s: 0.10407328605651855
  timestamp: 1658499903
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 12309db2
  warmup_time: 0.0030128955841064453
  
Result for objective_12342770:
  date: 2022-07-22_15-25-03
  done: false
  experiment_id: 1da16f0c20d7438b93927280dc40e5a1
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 1.1922491879354844
  neg_mean_loss: -1.1922491879354844
  node_ip: 127.0.0.1
  pid: 46550
  time_since_restore: 0.1050269603729248
  time_this_iter_s: 0.1050269603729248
  time_total_s: 0.1050269603729248
  timestamp: 1658499903
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: '12342770'
  warmup_time: 0.0032460689544677734
  
Result for objective_12374d7e:
  date: 2022-07-22_15-25-03
  done: false
  experiment_id: 5788d010ee194eeeabfc3592d37fb2cc
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 19.839240921278268
  neg_mean_loss: -19.839240921278268
  node_ip: 127.0.0.1
  pid: 46551
  time_since_restore: 0.10313534736633301
  time_this_iter_s: 0.10313534736633301
  time_total_s: 0.10313534736633301
  timestamp: 1658499903
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 12374d7e
  warmup_time: 0.002891063690185547
  
Result for objective_1045958e:
  date: 2022-07-22_15-25-05
  done: false
  experiment_id: 3579bfc2b346424b833f82f23d459807
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 3.0263684682219036
  neg_mean_loss: -3.0263684682219036
  node_ip: 127.0.0.1
  pid: 46544
  time_since_restore: 5.180821180343628
  time_this_iter_s: 0.10701394081115723
  time_total_s: 5.180821180343628
  timestamp: 1658499905
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 1045958e
  warmup_time: 0.002847909927368164
  
Result for objective_12309db2:
  date: 2022-07-22_15-25-08
  done: false
  experiment_id: 3915d19b775c4ee1843b5dcf79560a93
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 0.6271166903395393
  neg_mean_loss: -0.6271166903395393
  node_ip: 127.0.0.1
  pid: 46549
  time_since_restore: 5.172047138214111
  time_this_iter_s: 0.11187624931335449
  time_total_s: 5.172047138214111
  timestamp: 1658499908
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 12309db2
  warmup_time: 0.0030128955841064453
  
Result for objective_12342770:
  date: 2022-07-22_15-25-08
  done: false
  experiment_id: 1da16f0c20d7438b93927280dc40e5a1
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: -8.685737519988487
  neg_mean_loss: 8.685737519988487
  node_ip: 127.0.0.1
  pid: 46550
  time_since_restore: 5.172597885131836
  time_this_iter_s: 0.10711097717285156
  time_total_s: 5.172597885131836
  timestamp: 1658499908
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: '12342770'
  warmup_time: 0.0032460689544677734
  
Result for objective_12374d7e:
  date: 2022-07-22_15-25-08
  done: false
  experiment_id: 5788d010ee194eeeabfc3592d37fb2cc
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 9.955526689542863
  neg_mean_loss: -9.955526689542863
  node_ip: 127.0.0.1
  pid: 46551
  time_since_restore: 5.162422180175781
  time_this_iter_s: 0.10872411727905273
  time_total_s: 5.162422180175781
  timestamp: 1658499908
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 12374d7e
  warmup_time: 0.002891063690185547
  
Result for objective_1045958e:
  date: 2022-07-22_15-25-10
  done: false
  experiment_id: 3579bfc2b346424b833f82f23d459807
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: 2.852294770731789
  neg_mean_loss: -2.852294770731789
  node_ip: 127.0.0.1
  pid: 46544
  time_since_restore: 10.196197271347046
  time_this_iter_s: 0.10780715942382812
  time_total_s: 10.196197271347046
  timestamp: 1658499910
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: 1045958e
  warmup_time: 0.002847909927368164
  
Result for objective_1045958e:
  date: 2022-07-22_15-25-11
  done: true
  experiment_id: 3579bfc2b346424b833f82f23d459807
  experiment_tag: 5_activation=relu,height=-73.2818,steps=100,width=5.7883
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 2.8433363404373386
  neg_mean_loss: -2.8433363404373386
  node_ip: 127.0.0.1
  pid: 46544
  time_since_restore: 10.737220287322998
  time_this_iter_s: 0.10835909843444824
  time_total_s: 10.737220287322998
  timestamp: 1658499911
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 1045958e
  warmup_time: 0.002847909927368164
  
Result for objective_18344524:
  date: 2022-07-22_15-25-13
  done: false
  experiment_id: 10740ef080664baaa8cca7ba5cb899ac
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 6.887162536491742
  neg_mean_loss: -6.887162536491742
  node_ip: 127.0.0.1
  pid: 46569
  time_since_restore: 0.10450887680053711
  time_this_iter_s: 0.10450887680053711
  time_total_s: 0.10450887680053711
  timestamp: 1658499913
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: '18344524'
  warmup_time: 0.002858877182006836
  
Result for objective_12309db2:
  date: 2022-07-22_15-25-13
  done: false
  experiment_id: 3915d19b775c4ee1843b5dcf79560a93
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: 0.5656126475885976
  neg_mean_loss: -0.5656126475885976
  node_ip: 127.0.0.1
  pid: 46549
  time_since_restore: 10.193128108978271
  time_this_iter_s: 0.10602211952209473
  time_total_s: 10.193128108978271
  timestamp: 1658499913
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: 12309db2
  warmup_time: 0.0030128955841064453
  
Result for objective_12342770:
  date: 2022-07-22_15-25-13
  done: false
  experiment_id: 1da16f0c20d7438b93927280dc40e5a1
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: -8.746369700451542
  neg_mean_loss: 8.746369700451542
  node_ip: 127.0.0.1
  pid: 46550
  time_since_restore: 10.210996866226196
  time_this_iter_s: 0.10719585418701172
  time_total_s: 10.210996866226196
  timestamp: 1658499913
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: '12342770'
  warmup_time: 0.0032460689544677734
  
Result for objective_12374d7e:
  date: 2022-07-22_15-25-13
  done: false
  experiment_id: 5788d010ee194eeeabfc3592d37fb2cc
  hostname: Kais-MacBook-Pro.local
  iterations: 94
  iterations_since_restore: 95
  mean_loss: 9.897723841978765
  neg_mean_loss: -9.897723841978765
  node_ip: 127.0.0.1
  pid: 46551
  time_since_restore: 10.19912338256836
  time_this_iter_s: 0.10725522041320801
  time_total_s: 10.19912338256836
  timestamp: 1658499913
  timesteps_since_restore: 0
  training_iteration: 95
  trial_id: 12374d7e
  warmup_time: 0.002891063690185547
  
Result for objective_12309db2:
  date: 2022-07-22_15-25-14
  done: true
  experiment_id: 3915d19b775c4ee1843b5dcf79560a93
  experiment_tag: 6_activation=relu,height=-94.9666,steps=100,width=16.9764
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 0.5624860552037738
  neg_mean_loss: -0.5624860552037738
  node_ip: 127.0.0.1
  pid: 46549
  time_since_restore: 10.73293399810791
  time_this_iter_s: 0.1079857349395752
  time_total_s: 10.73293399810791
  timestamp: 1658499914
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 12309db2
  warmup_time: 0.0030128955841064453
  
Result for objective_12342770:
  date: 2022-07-22_15-25-14
  done: true
  experiment_id: 1da16f0c20d7438b93927280dc40e5a1
  experiment_tag: 7_activation=tanh,height=-98.0775,steps=100,width=17.2252
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: -8.749451683536464
  neg_mean_loss: 8.749451683536464
  node_ip: 127.0.0.1
  pid: 46550
  time_since_restore: 10.745534181594849
  time_this_iter_s: 0.10716795921325684
  time_total_s: 10.745534181594849
  timestamp: 1658499914
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: '12342770'
  warmup_time: 0.0032460689544677734
  
Result for objective_12374d7e:
  date: 2022-07-22_15-25-14
  done: true
  experiment_id: 5788d010ee194eeeabfc3592d37fb2cc
  experiment_tag: 8_activation=relu,height=-1.6076,steps=100,width=18.0841
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 9.894786565536863
  neg_mean_loss: -9.894786565536863
  node_ip: 127.0.0.1
  pid: 46551
  time_since_restore: 10.734816074371338
  time_this_iter_s: 0.10638594627380371
  time_total_s: 10.734816074371338
  timestamp: 1658499914
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 12374d7e
  warmup_time: 0.002891063690185547
  

Result for objective_1a1e29b8:
  date: 2022-07-22_15-25-17
  done: false
  experiment_id: 26fc8c5f05a6407690dc8cada561576e
  hostname: Kais-MacBook-Pro.local
  iterations: 0
  iterations_since_restore: 1
  mean_loss: 17.40289288319415
  neg_mean_loss: -17.40289288319415
  node_ip: 127.0.0.1
  pid: 46576
  time_since_restore: 0.10475707054138184
  time_this_iter_s: 0.10475707054138184
  time_total_s: 0.10475707054138184
  timestamp: 1658499917
  timesteps_since_restore: 0
  training_iteration: 1
  trial_id: 1a1e29b8
  warmup_time: 0.0028810501098632812
  
Result for objective_18344524:
  date: 2022-07-22_15-25-19
  done: false
  experiment_id: 10740ef080664baaa8cca7ba5cb899ac
  hostname: Kais-MacBook-Pro.local
  iterations: 30
  iterations_since_restore: 31
  mean_loss: -2.8488858516331668
  neg_mean_loss: 2.8488858516331668
  node_ip: 127.0.0.1
  pid: 46569
  time_since_restore: 5.212157964706421
  time_this_iter_s: 0.10646200180053711
  time_total_s: 5.212157964706421
  timestamp: 1658499919
  timesteps_since_restore: 0
  training_iteration: 31
  trial_id: '18344524'
  warmup_time: 0.002858877182006836
  
Result for objective_1a1e29b8:
  date: 2022-07-22_15-25-22
  done: false
  experiment_id: 26fc8c5f05a6407690dc8cada561576e
  hostname: Kais-MacBook-Pro.local
  iterations: 47
  iterations_since_restore: 48
  mean_loss: 7.610248309424407
  neg_mean_loss: -7.610248309424407
  node_ip: 127.0.0.1
  pid: 46576
  time_since_restore: 5.170850038528442
  time_this_iter_s: 0.1072230339050293
  time_total_s: 5.170850038528442
  timestamp: 1658499922
  timesteps_since_restore: 0
  training_iteration: 48
  trial_id: 1a1e29b8
  warmup_time: 0.0028810501098632812
  
Result for objective_18344524:
  date: 2022-07-22_15-25-24
  done: false
  experiment_id: 10740ef080664baaa8cca7ba5cb899ac
  hostname: Kais-MacBook-Pro.local
  iterations: 77
  iterations_since_restore: 78
  mean_loss: -3.0083151799393004
  neg_mean_loss: 3.0083151799393004
  node_ip: 127.0.0.1
  pid: 46569
  time_since_restore: 10.263540983200073
  time_this_iter_s: 0.10780215263366699
  time_total_s: 10.263540983200073
  timestamp: 1658499924
  timesteps_since_restore: 0
  training_iteration: 78
  trial_id: '18344524'
  warmup_time: 0.002858877182006836
  
Result for objective_18344524:
  date: 2022-07-22_15-25-26
  done: true
  experiment_id: 10740ef080664baaa8cca7ba5cb899ac
  experiment_tag: 9_activation=tanh,height=-41.1284,steps=100,width=12.2952
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: -3.0313530888899516
  neg_mean_loss: 3.0313530888899516
  node_ip: 127.0.0.1
  pid: 46569
  time_since_restore: 12.62198805809021
  time_this_iter_s: 0.1080331802368164
  time_total_s: 12.62198805809021
  timestamp: 1658499926
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: '18344524'
  warmup_time: 0.002858877182006836
  
Result for objective_1a1e29b8:
  date: 2022-07-22_15-25-27
  done: false
  experiment_id: 26fc8c5f05a6407690dc8cada561576e
  hostname: Kais-MacBook-Pro.local
  iterations: 93
  iterations_since_restore: 94
  mean_loss: 7.5087713304782575
  neg_mean_loss: -7.5087713304782575
  node_ip: 127.0.0.1
  pid: 46576
  time_since_restore: 10.177540063858032
  time_this_iter_s: 0.1076350212097168
  time_total_s: 10.177540063858032
  timestamp: 1658499927
  timesteps_since_restore: 0
  training_iteration: 94
  trial_id: 1a1e29b8
  warmup_time: 0.0028810501098632812
  
Result for objective_1a1e29b8:
  date: 2022-07-22_15-25-27
  done: true
  experiment_id: 26fc8c5f05a6407690dc8cada561576e
  experiment_tag: 10_activation=tanh,height=64.0289,steps=100,width=10.0482
  hostname: Kais-MacBook-Pro.local
  iterations: 99
  iterations_since_restore: 100
  mean_loss: 7.502418319119348
  neg_mean_loss: -7.502418319119348
  node_ip: 127.0.0.1
  pid: 46576
  time_since_restore: 10.823745012283325
  time_this_iter_s: 0.10851097106933594
  time_total_s: 10.823745012283325
  timestamp: 1658499927
  timesteps_since_restore: 0
  training_iteration: 100
  trial_id: 1a1e29b8
  warmup_time: 0.0028810501098632812
  

INFO:ray.tune.tune:Total run time: 43.33 seconds (43.21 seconds for the tuning loop).

Here are the hyperparameters found to minimize the mean loss of the defined objective. Note that we have to pass the metric and mode here because we don’t set it in the TuneConfig.

print("Best hyperparameters found were: ", results.get_best_result("mean_loss", "min").config)

Best hyperparameters found were:  {'steps': 100, 'width': 17.225166732233465, 'height': -98.07750812064515, 'activation': 'tanh'}