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Information to Ray for Scalable AI and Machine Studying Functions

Admin by Admin
April 3, 2025
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Ray has emerged as a robust framework for distributed computing in AI and ML workloads, enabling researchers and practitioners to scale their functions from laptops to clusters with minimal code modifications. This information supplies an in-depth exploration of Ray’s structure, capabilities, and functions in fashionable machine studying workflows, full with a sensible challenge implementation.

Studying Targets

  • Perceive Ray’s structure and its position in distributed computing for AI/ML.
  • Leverage Ray’s ecosystem (Practice, Tune, Serve, Knowledge) for end-to-end ML workflows.
  • Examine Ray with different distributed computing frameworks.
  • Design distributed coaching pipelines for giant language fashions.
  • Optimize useful resource allocation and debug distributed functions.

This text was printed as part of the Knowledge Science Blogathon.

Introduction to Ray and Distributed Computing

Ray is an open-source unified framework for scaling AI and Python functions, offering a easy, common API for constructing distributed functions that may scale from a laptop computer to a cluster. Developed initially at UC Berkeley’s RISELab and now maintained by Anyscale, Ray has gained vital traction within the AI group, changing into the spine for coaching and deploying a number of the most superior AI fashions at this time.

The rising significance of distributed computing in AI stems from a number of components:

  • Rising mannequin sizes: Fashionable AI fashions, particularly giant language fashions (LLMs), have grown exponentially in dimension, with billions and even trillions of parameters.
  • Increasing datasets: Coaching knowledge continues to develop in quantity, usually exceeding what will be processed on a single machine.
  • Computational calls for: Complicated algorithms and coaching procedures require extra computational assets than particular person machines can present.
  • Deployment challenges: Serving fashions at scale requires distributed infrastructure to deal with various workloads effectively.

Conventional distributed computing frameworks usually require vital rewrites of present code, presenting a steep studying curve. Ray differentiates itself by providing a easy, intuitive API that makes transitioning from single-machine to multi-machine computation easy, usually requiring just a few decorator modifications to present Python code.

Problem of Scaling Python Functions

Python has grow to be the lingua franca of knowledge science and machine studying, nevertheless it wasn’t designed with distributed computing in thoughts. When practitioners must scale their Python functions, they historically face a number of challenges:

  • Low-level distribution issues: Managing employee processes, load balancing, and fault tolerance.
  • Knowledge motion: Effectively transferring knowledge between machines.
  • Useful resource administration: Allocating and monitoring CPU, GPU, and reminiscence assets throughout a cluster.
  • Code complexity: Rewriting algorithms to work in a distributed vogue.

It addresses these challenges by offering a unified framework that abstracts away a lot of the complexity whereas nonetheless permitting fine-grained management when wanted.

Ray Framework

Ray Framework structure is structured into three main elements:​

  • Ray AI Libraries: This assortment of Python-based, domain-specific libraries supplies machine studying engineers, knowledge scientists, and researchers with a scalable toolkit tailor-made for varied ML functions.
  • Ray Core: Serving as the inspiration, Ray Core is a general-purpose distributed computing library that empowers Python builders to parallelize and scale functions, thereby enhancing machine studying workloads.
  • Ray Clusters: Comprising a number of employee nodes linked to a central head node, Ray Clusters will be configured with a hard and fast dimension or set to dynamically regulate assets primarily based on the calls for of the working functions.

This modular design permits customers to effectively construct and handle distributed functions with out requiring in-depth experience in distributed methods.​

Getting Began with Ray 

Earlier than diving into the superior functions, it’s important to arrange your Ray setting and perceive the fundamentals of getting began.

Ray will be put in utilizing pip. To put in the newest secure model, run: 

# For machine studying functions

pip set up -U "ray[data,train,tune,serve]"

## For reinforcement studying help, set up RLlib as a substitute.
## pip set up -U "ray[rllib]"

# For common Python functions

pip set up -U "ray[default]"

## If you don't need Ray Dashboard or Cluster Launcher, set up Ray with minimal dependencies as a substitute.
## pip set up -U "ray"
Getting Started with Ray 

Ray’s Programming Mannequin: Duties and Actors

Ray’s programming mannequin revolves round two main abstractions:

  • Duties: Features that execute remotely and asynchronously. Duties are stateless computations that may be scheduled on any employee within the cluster.
  • Actors: Lessons that keep state and execute strategies remotely. Actors encapsulate state and supply an object-oriented strategy to distributed computing.

These abstractions permit builders to precise various kinds of parallelism naturally:

import ray
# Initialize Ray
ray.init()

# Outline a distant process
@ray.distant
def process_data(data_chunk):
    # Course of knowledge and return outcomes
    return processed_result

# Outline an actor class
@ray.distant
class Counter:
    def __init__(self):
        self.rely = 0
    
    def increment(self):
        self.rely += 1
        return self.rely
    
    def get_count(self):
        return self.rely

# Execute duties in parallel
data_chunks = [data_1, data_2, data_3, data_4]
result_refs = [process_data.remote(chunk) for chunk in data_chunks]
outcomes = ray.get(result_refs)  # Look ahead to all duties to finish

# Create an actor occasion
counter = Counter.distant()
counter.increment.distant()  # Execute technique on the actor
rely = ray.get(counter.get_count.distant())  # Get the actor's state

Ray’s programming mannequin makes it straightforward to remodel sequential Python code into distributed functions with minimal modifications. Duties are perfect for stateless, embarrassingly parallel workloads, whereas actors are good for sustaining state or implementing companies.

Ray Cluster Structure

A Ray cluster consists of a number of key elements:

  • Head Node: The central coordination level for the cluster, internet hosting the International Management Retailer (GCS) which maintains cluster metadata.
  • Employee Nodes: Processes that execute duties and host actors. Every employee runs on a separate CPU or GPU core.
  • Driver Course of: The method working the person’s program, accountable for submitting duties to the cluster.
  • Object Retailer: A distributed, shared-memory object retailer for environment friendly knowledge sharing between duties and actors.
  • Scheduler: Accountable for assigning duties to employees primarily based on useful resource availability and constraints.
  • Useful resource Administration: Ray’s system for allocating and monitoring CPU, GPU, and customized assets throughout the cluster.

Organising a Ray cluster will be achieved in a number of methods:

  • Regionally on a single machine
  • On a non-public cluster utilizing Ray’s cluster launcher
  • On cloud suppliers like AWS, GCP, or Azure
  • Utilizing managed companies like Anyscale
# Beginning Ray on a single machine (head node)
ray begin --head --port=6379

# Becoming a member of a employee node to the cluster
ray begin --address=:6379

Ray Object Retailer and Reminiscence Administration

Ray features a distributed object retailer that permits environment friendly sharing of objects between duties and actors. Objects within the retailer are immutable and will be accessed by any employee within the cluster.

import ray
import numpy as np

ray.init()

# Retailer an object within the object retailer
knowledge = np.random.rand(1000, 1000)
data_ref = ray.put(knowledge)  # Returns a reference to the article

# Go the reference to a distant process
@ray.distant
def process_matrix(matrix_ref):
    # The matrix is retrieved from the article retailer
    matrix = ray.get(matrix_ref)
    return np.sum(matrix)

result_ref = process_matrix.distant(data_ref)
end result = ray.get(result_ref)

The thing retailer optimizes knowledge switch by:

  • Avoiding pointless knowledge copying: Objects are shared by reference when doable.
  • Spilling to disk: Routinely shifting objects to disk when reminiscence is proscribed.
  • Distributed references: Monitoring object references throughout the cluster.

Ray for AI and ML Workloads

The Ray supplies a complete ecosystem of libraries particularly designed for various facets of AI and ML workflows:

Ray Practice for Distributed Mannequin Coaching utilizing PyTorch

Ray Practice simplifies distributed deep studying with a unified API throughout completely different frameworks

For reference, the ultimate code will look one thing like the next:

import os
import tempfile

import torch
from torch.nn import CrossEntropyLoss
from torch.optim import Adam
from torch.utils.knowledge import DataLoader
from torchvision.fashions import resnet18
from torchvision.datasets import FashionMNIST
from torchvision.transforms import ToTensor, Normalize, Compose

import ray.prepare.torch

def train_func():
    # Mannequin, Loss, Optimizer
    mannequin = resnet18(num_classes=10)
    mannequin.conv1 = torch.nn.Conv2d(
        1, 64, kernel_size=(7, 7), stride=(2, 2), padding=(3, 3), bias=False
    )
    # [1] Put together mannequin.
    mannequin = ray.prepare.torch.prepare_model(mannequin)
    # mannequin.to("cuda")  # That is achieved by `prepare_model`
    criterion = CrossEntropyLoss()
    optimizer = Adam(mannequin.parameters(), lr=0.001)

    # Knowledge
    rework = Compose([ToTensor(), Normalize((0.28604,), (0.32025,))])
    data_dir = os.path.be a part of(tempfile.gettempdir(), "knowledge")
    train_data = FashionMNIST(root=data_dir, prepare=True, obtain=True, rework=rework)
    train_loader = DataLoader(train_data, batch_size=128, shuffle=True)
    # [2] Put together dataloader.
    train_loader = ray.prepare.torch.prepare_data_loader(train_loader)

    # Coaching
    for epoch in vary(10):
        if ray.prepare.get_context().get_world_size() > 1:
            train_loader.sampler.set_epoch(epoch)

        for photographs, labels in train_loader:
            # That is achieved by `prepare_data_loader`!
            # photographs, labels = photographs.to("cuda"), labels.to("cuda")
            outputs = mannequin(photographs)
            loss = criterion(outputs, labels)
            optimizer.zero_grad()
            loss.backward()
            optimizer.step()

        # [3] Report metrics and checkpoint.
        metrics = {"loss": loss.merchandise(), "epoch": epoch}
        with tempfile.TemporaryDirectory() as temp_checkpoint_dir:
            torch.save(
                mannequin.module.state_dict(),
                os.path.be a part of(temp_checkpoint_dir, "mannequin.pt")
            )
            ray.prepare.report(
                metrics,
                checkpoint=ray.prepare.Checkpoint.from_directory(temp_checkpoint_dir),
            )
        if ray.prepare.get_context().get_world_rank() == 0:
            print(metrics)

# [4] Configure scaling and useful resource necessities.
scaling_config = ray.prepare.ScalingConfig(num_workers=2, use_gpu=True)

# [5] Launch distributed coaching job.
coach = ray.prepare.torch.TorchTrainer(
    train_func,
    scaling_config=scaling_config,
    # [5a] If working in a multi-node cluster, that is the place you
    # ought to configure the run's persistent storage that's accessible
    # throughout all employee nodes.
    # run_config=ray.prepare.RunConfig(storage_path="s3://..."),
)
end result = coach.match()

# [6] Load the skilled mannequin.
with end result.checkpoint.as_directory() as checkpoint_dir:
    model_state_dict = torch.load(os.path.be a part of(checkpoint_dir, "mannequin.pt"))
    mannequin = resnet18(num_classes=10)
    mannequin.conv1 = torch.nn.Conv2d(
        1, 64, kernel_size=(7, 7), stride=(2, 2), padding=(3, 3), bias=False
    )
    mannequin.load_state_dict(model_state_dict)

Ray Practice supplies:

  • Multi-node and multi-GPU coaching capabilities
  • Assist for in style frameworks (PyTorch, TensorFlow, Horovod)
  • Checkpointing and fault tolerance
  • Integration with hyperparameter tuning

Ray Tune for Hyperparameter Optimization

Hyperparameter tuning is essential for AI and ML mannequin efficiency. Ray Tune supplies scalable hyperparameter optimization.

To run, set up the next:

pip set up "ray[tune]"
from ray import tune
from ray.tune.schedulers import ASHAScheduler

# Outline the target operate to optimize
def goal(config):
    mannequin = build_model(config)
    for epoch in vary(100):
        # Practice the mannequin
        loss = train_epoch(mannequin)
        tune.report(loss=loss)  # Report metrics to Tune

# Configure the search area
search_space = {
    "learning_rate": tune.loguniform(1e-4, 1e-1),
    "batch_size": tune.alternative([16, 32, 64, 128]),
    "hidden_layers": tune.randint(1, 5)
}

# Run hyperparameter optimization
evaluation = tune.run(
    goal,
    config=search_space,
    scheduler=ASHAScheduler(metric="loss", mode="min"),
    num_samples=100
)

# Get the perfect configuration
best_config = evaluation.get_best_config(metric="loss", mode="min")

Ray Tune gives:

  • Varied search algorithms (grid search, random search, Bayesian optimization)
  • Adaptive useful resource allocation
  • Early stopping for inefficient trials
  • Integration with ML frameworks

Ray Serve for Mannequin Deployment

It’s designed for deploying ML fashions at scale:

Set up Ray Serve and its dependencies:

#import csv
import ray
from ray import serve
from starlette.requests import Request
import torch
import json

# Begin Ray Serve
serve.begin()

# Outline a deployment for our mannequin
@serve.deployment(route_prefix="/predict", num_replicas=2)
class ModelDeployment:
    def __init__(self, model_path):
        self.mannequin = torch.load(model_path)
        self.mannequin.eval()
    
    async def __call__(self, request: Request):
        knowledge = await request.json()
        input_tensor = torch.tensor(knowledge["input"])
        
        with torch.no_grad():
            prediction = self.mannequin(input_tensor).tolist()
        
        return {"prediction": prediction}

# Deploy the mannequin
model_deployment = ModelDeployment.deploy("./trained_model.pt")

The Ray Serve permits:

  • Mannequin composition and microservices
  • Horizontal scaling
  • Site visitors splitting and A/B testing
  • Batching for efficiency optimization

Ray Knowledge for ML-Optimized Knowledge Processing

Ray Knowledge supplies distributed knowledge processing capabilities optimized for ML workloads:

import ray

# Initialize Ray
ray.init()

# Create a dataset from a file or knowledge supply
ds = ray.knowledge.read_csv("s3://bucket/path/to/knowledge.csv")

# Apply transformations in parallel
def preprocess_batch(batch):
    # Apply preprocessing to the batch
    return processed_batch

transformed_ds = ds.map_batches(preprocess_batch)

# Cut up for coaching and validation
train_ds, val_ds = transformed_ds.train_test_split(test_size=0.2)

# Create a loader for ML framework (e.g., PyTorch)
train_loader = train_ds.to_torch(batch_size=32, shuffle=True)

Knowledge gives:

  • Parallel knowledge loading and transformation
  • Integration with ML coaching
  • Assist for varied knowledge codecs and sources
  • Optimized for ML workflows

Distributed Tremendous-tuning of a Massive Language Mannequin with Ray

Let’s implement an entire challenge that demonstrates the best way to use Ray for fine-tuning a giant language mannequin (LLM) utilizing distributed computing assets. We’ll use GPT-J-6B as our base mannequin and Ray Practice with DeepSpeed for environment friendly distributed coaching.

On this challenge, we are going to:

  • Arrange a Ray cluster for distributed coaching
  • Put together a dataset for fine-tuning the LLM
  • Configure DeepSpeed for memory-efficient coaching
  • Implement distributed coaching utilizing Ray Practice
  • Consider the mannequin and deploy it with Ray Serve

Surroundings Setup

First, let’s arrange the environment with the mandatory dependencies:

# Set up required packages
!pip set up "ray[train]" transformers datasets speed up deepspeed torch consider

Ray Cluster Configuration

For this challenge, we’ll configure a Ray cluster with a number of GPUs:

import ray
import os

# Configuration
model_name = "EleutherAI/gpt-j-6B"  # We'll use GPT-J-6B as our base mannequin
use_gpu = True
num_workers = 16  # Variety of coaching employees (regulate primarily based on obtainable GPUs)
cpus_per_worker = 8  # CPUs per employee

# Initialize Ray
ray.init(
    runtime_env={
        "pip": [
            "transformers==4.26.0",
            "accelerate==0.18.0",
            "datasets",
            "evaluate",
            "deepspeed==0.12.3",
            "torch>=1.12.0"
        ]
    }
)

This initialization creates a neighborhood Ray cluster. In a manufacturing setting, you would possibly connect with an present Ray cluster as a substitute.

Knowledge Preparation

For fine-tuning our language mannequin, we’ll put together a textual content dataset:

from datasets import load_dataset
from transformers import AutoTokenizer

# Load tokenizer for our mannequin
tokenizer = AutoTokenizer.from_pretrained(model_name)
tokenizer.pad_token = tokenizer.eos_token  # GPT fashions do not have a pad token by default

# Load a textual content dataset (instance utilizing a subset of wikitext)
dataset = load_dataset("wikitext", "wikitext-2-raw-v1")

# Outline preprocessing operate for tokenization
def preprocess_function(examples):
    return tokenizer(
        examples["text"],
        truncation=True,
        max_length=512,
        padding="max_length",
        return_tensors="pt"
    )

# Tokenize the dataset in parallel utilizing Ray Knowledge
import ray.knowledge
ray_dataset = ray.knowledge.from_huggingface(dataset)
tokenized_dataset = ray_dataset.map_batches(
    preprocess_function,
    batch_format="pandas",
    batch_size=100
)

# Convert again to Hugging Face dataset format
train_dataset = tokenized_dataset.prepare.to_huggingface()
eval_dataset = tokenized_dataset.validation.to_huggingface()

DeepSpeed Configuration for Reminiscence-Environment friendly Coaching

Coaching giant fashions like GPT-J-6B requires reminiscence optimization methods. DeepSpeed is a deep studying optimization library that permits environment friendly coaching.

Let’s configure it for our distributed coaching:

# DeepSpeed configuration
deepspeed_config = {
    "fp16": {
        "enabled": True
    },
    "zero_optimization": {
        "stage": 2,
        "offload_optimizer": {
            "machine": "cpu"
        },
        "allgather_bucket_size": 5e8,
        "reduce_bucket_size": 5e8
    },
    "train_batch_size": "auto",
    "train_micro_batch_size_per_gpu": 4,
    "gradient_accumulation_steps": "auto",
    "optimizer": {
        "kind": "AdamW",
        "params": {
            "lr": 5e-5,
            "weight_decay": 0.01
        }
    }
}

# Save the config to a file
import json
with open("deepspeed_config.json", "w") as f:
    json.dump(deepspeed_config, f)

This configuration makes use of a number of optimization methods:

  • FP16 precision to scale back reminiscence utilization
  • ZeRO stage 2 optimizer to partition optimizer states
  • CPU offloading to maneuver some knowledge from GPU to CPU reminiscence
  • Automated batch dimension and gradient accumulation configuration

Implementing Distributed Coaching

Outline the coaching operate and use Ray Practice to distribute it throughout the cluster:

from transformers import AutoModelForCausalLM, Coach, TrainingArguments
import torch
import torch.distributed as dist
from ray.prepare.huggingface import HuggingFaceTrainer
from ray.prepare import ScalingConfig

# Outline the coaching operate to be executed on every employee
def train_func(config):
    # Initialize course of group for distributed coaching
    dist.init_process_group(backend="nccl")
    
    # Load pre-trained mannequin
    mannequin = AutoModelForCausalLM.from_pretrained(
        config["model_name"],
        revision="float16",
        torch_dtype=torch.float16,
        low_cpu_mem_usage=True
    )
    
    # Arrange coaching arguments
    training_args = TrainingArguments(
        output_dir="./output",
        per_device_train_batch_size=config["batch_size"],
        per_device_eval_batch_size=config["batch_size"],
        evaluation_strategy="epoch",
        num_train_epochs=config["epochs"],
        fp16=True,
        report_to="none",
        deepspeed="deepspeed_config.json",
        save_strategy="epoch",
        load_best_model_at_end=True,
        logging_steps=10
    )
    
    # Initialize Coach
    coach = Coach(
        mannequin=mannequin,
        args=training_args,
        train_dataset=config["train_dataset"],
        eval_dataset=config["eval_dataset"],
    )
    
    # Practice the mannequin
    coach.prepare()
    
    # Save the ultimate mannequin
    coach.save_model("./final_model")
    
    return {"loss": coach.state.best_metric}

# Configure the distributed coaching
scaling_config = ScalingConfig(
    num_workers=num_workers,
    use_gpu=use_gpu,
    resources_per_worker={"CPU": cpus_per_worker, "GPU": 1}
)

# Create the Ray Practice Coach
coach = HuggingFaceTrainer(
    train_func,
    scaling_config=scaling_config,
    train_loop_config={
        "model_name": model_name,
        "train_dataset": train_dataset,
        "eval_dataset": eval_dataset,
        "batch_size": 4,
        "epochs": 3
    }
)

# Begin the distributed coaching
end result = coach.match()

This code units up distributed coaching throughout a number of GPUs utilizing Ray Practice. The train_func is executed on every employee, with Ray dealing with the distribution of the workload.

Mannequin Analysis

After coaching, we’ll consider the mannequin’s efficiency:

from transformers import pipeline

# Load the fine-tuned mannequin
model_path = "./final_model"
tokenizer = AutoTokenizer.from_pretrained(model_path)
mannequin = AutoModelForCausalLM.from_pretrained(model_path)

# Create a textual content technology pipeline
text_generator = pipeline("text-generation", mannequin=mannequin, tokenizer=tokenizer, machine=0)

# Instance prompts for analysis
prompts = [
    "Artificial intelligence is",
    "The future of distributed computing",
    "Machine learning models can"
]

# Generate textual content for every immediate
for immediate in prompts:
    generated_text = text_generator(immediate, max_length=100, num_return_sequences=1)[0]["generated_text"]
    print(f"Immediate: {immediate}")
    print(f"Generated: {generated_text}")
    print("---")

Deploying the Mannequin with Ray Serve

Lastly, we’ll deploy the fine-tuned mannequin for inference utilizing Ray Serve:

import ray
from ray import serve
from starlette.requests import Request
import json

# Begin Ray Serve
serve.begin()

# Outline a deployment for our mannequin
@serve.deployment(route_prefix="/generate", num_replicas=2, ray_actor_options={"num_gpus": 1})
class TextGenerationModel:
    def __init__(self, model_path):
        self.tokenizer = AutoTokenizer.from_pretrained(model_path)
        self.mannequin = AutoModelForCausalLM.from_pretrained(
            model_path,
            torch_dtype=torch.float16,
            device_map="auto"
        )
        self.pipeline = pipeline(
            "text-generation",
            mannequin=self.mannequin,
            tokenizer=self.tokenizer
        )
    
    async def __call__(self, request: Request) -> dict:
        knowledge = await request.json()
        immediate = knowledge.get("immediate", "")
        max_length = knowledge.get("max_length", 100)
        
        generated_text = self.pipeline(
            immediate,
            max_length=max_length,
            num_return_sequences=1
        )[0]["generated_text"]
        
        return {"generated_text": generated_text}

# Deploy the mannequin
model_deployment = TextGenerationModel.deploy("./final_model")

# Instance shopper code to question the deployed mannequin
import requests

response = requests.submit(
    "http://localhost:8000/generate",
    json={"immediate": "Synthetic intelligence is", "max_length": 100}
)
print(response.json())

This deployment makes use of Ray Serve to create a scalable inference service. Ray Serve handles the complexity of scaling, load balancing, and useful resource administration, permitting us to concentrate on the appliance logic.

Actual-World Functions and Case Research of Ray

Ray has gained vital traction in varied industries as a result of its skill to scale AI/ML workloads effectively. Listed below are some notable real-world functions and case research:

Massive-Scale AI Mannequin Coaching (OpenAI, Uber, and Meta)

  • OpenAI used Ray to scale reinforcement studying for coaching AI brokers like Dota 2 bots.
  • Uber’s Michelangelo leverages Ray for distributed hyperparameter tuning and mannequin coaching at scale.
  • Meta (Fb) employs Ray to optimize large-scale deep studying workflows.

Monetary Companies and Fraud Detection (Ant Group, JP Morgan, and Goldman Sachs)

  • Ant Group (Alibaba’s fintech arm) integrates Ray for real-time fraud detection and threat evaluation.
  • JP Morgan and Goldman Sachs use Ray to speed up monetary modeling, threat evaluation, and algorithmic buying and selling methods.

Autonomous Automobiles and Robotics (NVIDIA, Waymo, and Tesla)

  • NVIDIA makes use of Ray for reinforcement learning-based autonomous driving simulations.
  • Waymo and Tesla make use of Ray to coach self-driving automobile fashions with large-scale sensor knowledge processing.

Healthcare and Drug Discovery (DeepMind, Genentech, and AstraZeneca)

  • DeepMind leverages Ray for protein folding simulations and AI-driven medical analysis.
  • Genentech and AstraZeneca use Ray in AI-driven drug discovery, accelerating computational biology and genomics analysis.

Massive-Scale Advice Methods (Netflix, TikTok, and Amazon)

  • Netflix employs Ray to energy customized content material suggestions and A/B testing.
  • TikTok scales advice fashions with Ray to enhance video recommendations in actual time.
  • Amazon enhances its advice algorithms and e-commerce search utilizing Ray’s distributed computing capabilities.

Cloud & AI Infrastructure (Google Cloud, AWS, and Microsoft Azure)

  • Google Cloud Vertex AI integrates Ray for scalable machine studying mannequin coaching.
  • AWS SageMaker helps Ray for distributed hyperparameter tuning.
  • Microsoft Azure makes use of Ray for optimizing AI and machine studying companies.

Ray at OpenAI: Powering Massive Language Fashions

One of the vital notable customers of Ray is OpenAI, which has leveraged the framework for coaching its giant language fashions, together with ChatGPT. In line with experiences, Ray was key in enabling OpenAI to reinforce its skill to coach giant fashions effectively.

Earlier than adopting Ray, OpenAI used a group of customized instruments to develop early fashions. Nevertheless, as the restrictions of this strategy turned obvious, the corporate switched to Ray. OpenAI’s president, Greg Brockman, highlighted this transition on the Ray Summit.

The important thing benefit that Ray supplies for LLM coaching is the flexibility to run the identical code on each a developer’s laptop computer and an enormous distributed cluster. This functionality turns into more and more essential as fashions develop in dimension and complexity.

Superior Ray Options and Finest Practices

Allow us to now discover superior ray options and finest practices:

Reminiscence Administration in Distributed Functions

Environment friendly reminiscence administration is essential when working with large-scale ML workloads:

  • Object Spilling: Ray mechanically spills objects to disk when reminiscence strain is excessive. Configure spilling thresholds appropriately on your workload:
ray.init(
    object_store_memory=10 * 10**9,  # 10 GB
    _memory_monitor_refresh_ms=100,  # Verify reminiscence utilization each 100ms
)
  • Reference Administration: Explicitly delete references to giant objects when now not wanted:
# Create a big object
data_ref = ray.put(large_dataset)

# Use the reference
result_ref = process_data.distant(data_ref)
end result = ray.get(result_ref)

# Delete the reference when achieved
del data_ref
  • Streaming Knowledge Processing: For very giant datasets, use Ray Knowledge’s streaming capabilities as a substitute of loading all the things into reminiscence:
import ray
dataset = ray.knowledge.read_csv("s3://bucket/large_dataset/*.csv")

# Course of the dataset in batches with out loading all the things
for batch in dataset.iter_batches():
    # Course of every batch
    process_batch(batch)

Debugging Distributed Functions

Debugging distributed functions will be difficult. Ray supplies a number of instruments to assist:

  • Ray Dashboard: Offers visibility into process execution, actor states, and useful resource utilization:
# Begin Ray with the dashboard enabled
ray.init(dashboard_host="0.0.0.0")
# Entry the dashboard at http://:8265
  • Detailed Logging: Use Ray’s logging utilities to seize logs from all employees:
import ray
import logging

# Configure logging
ray.init(logging_level=logging.INFO)

@ray.distant
def task_with_logging():
    logger = logging.getLogger("ray")
    logger.data("This message shall be captured in Ray's logs")
    return "Activity accomplished"
  • Exception Dealing with: Ray propagates exceptions from distant duties again to the motive force:
@ray.distant
def task_that_might_fail(x):
    if x < 0:
        elevate ValueError("x should be non-negative")
    return x * x

# It will elevate the ValueError within the driver
strive:
    end result = ray.get(task_that_might_fail.distant(-1))
besides ValueError as e:
    print(f"Caught exception: {e}")

Ray vs. Different Distributed Computing Frameworks

We are going to now look in Ray vs. Different Distributed computing frameworks:

Ray vs. Dask

Each Ray and Dask are Python-native distributed computing frameworks, however they’ve completely different focuses:

  • Programming Mannequin: Ray’s process and actor mannequin supplies extra flexibility in comparison with Dask’s process graph strategy.
  • ML/AI Focus: Ray has specialised libraries for ML (Practice, Tune, Serve), whereas Dask focuses extra on knowledge processing.
  • Knowledge Processing: Dask has deeper integration with PyData ecosystem (NumPy, Pandas).
  • Efficiency: Ray sometimes reveals higher efficiency for fine-grained duties and dynamic workloads.

When to decide on Ray over Dask:

  • For ML-specific workloads (coaching, hyperparameter tuning, mannequin serving)
  • If you want the actor programming mannequin for stateful computation
  • For extremely dynamic process graphs that change throughout execution

Ray vs. Apache Spark

Ray and Apache Spark serve completely different main use circumstances:

  • Language Assist: Ray is Python-first, whereas Spark is JVM-based with Python bindings.
  • Use Instances: Spark excels at batch knowledge processing, whereas Ray is designed for ML/AI workloads.
  • Iteration Pace: Ray gives quicker iteration for ML experiments than Spark.
  • Programming Mannequin: Ray’s mannequin is extra versatile than Spark’s RDD/DataFrame abstractions.

When to decide on Ray over Spark:

  • For Python-native ML workflows
  • If you want fine-grained process scheduling
  • For interactive growth and quick iteration cycles
  • When constructing complicated functions that blend batch and on-line processing

Ray vs. Kubernetes + Customized ML Code

Whereas Kubernetes can be utilized to orchestrate ML workloads:

  • Abstraction Stage: Ray supplies higher-level abstractions particular to ML/AI than Kubernetes.
  • Growth Expertise: Ray gives a extra seamless growth expertise with out requiring information of containers and YAML.
  • Integration: Ray can run on Kubernetes, combining the strengths of each methods.

When to decide on Ray over uncooked Kubernetes:

  • To keep away from the complexity of container orchestration
  • For a extra built-in ML growth expertise
  • If you wish to concentrate on algorithms slightly than infrastructure

Reference: Ray docs

Conclusion

Ray has emerged as a crucial software for scaling AI and ML workloads, from analysis prototypes to manufacturing methods. Its intuitive programming mannequin, mixed with specialised libraries for coaching, tuning, and serving, makes it a beautiful alternative for organizations trying to scale their AI efforts effectively. Ray supplies a path to scale that doesn’t require rewriting present code or mastering complicated distributed methods ideas.

By understanding Ray’s core ideas, libraries, and finest practices outlined on this information, builders and knowledge scientists can leverage distributed computing to sort out issues that might be infeasible on a single machine, opening up new potentialities in AI and ML growth.

Whether or not you’re coaching giant language fashions, optimizing hyperparameters, serving fashions at scale, or processing large datasets, Ray supplies the instruments and abstractions to make distributed computing accessible and productive. As the sector continues to advance, Ray is positioned to play an more and more essential position in enabling the following technology of AI functions.

Key Takeaways

  • Ray simplifies distributed computing for AI/ML by enabling seamless scaling from a single machine to a cluster with minimal code modifications.
  • Ray’s ecosystem (Practice, Tune, Serve, Knowledge) supplies end-to-end options for distributed coaching, hyperparameter tuning, mannequin serving, and knowledge processing.
  • Ray’s process and actor-based programming mannequin makes parallelization intuitive, remodeling Python functions into scalable distributed workloads.
  • It optimizes useful resource administration by environment friendly scheduling, reminiscence administration, and computerized scaling throughout CPU/GPU clusters.
  • Actual-world AI functions at scale, together with LLM fine-tuning, reinforcement studying, and large-scale knowledge processing.

Continuously Requested Questions

Q1. What’s Ray, and why is it used?

A. Ray is an open-source framework for distributed computing, enabling Python functions to scale throughout a number of machines with minimal code modifications. It’s extensively used for AI/ML workloads, reinforcement studying, and large-scale knowledge processing.

Q2. How does Ray simplify distributed computing?

A. Ray abstracts the complexities of parallelization by offering a easy process and actor-based programming mannequin. Builders can distribute workloads throughout a number of CPUs and GPUs with out managing low-level infrastructure.

Q3. How does Ray examine to different distributed frameworks like Spark?

A. Whereas Spark is optimized for batch knowledge processing, Ray is extra versatile, supporting dynamic, interactive, and AI/ML-specific workloads. Ray additionally has built-in help for deep studying and reinforcement studying functions.

This autumn. Can Ray run on cloud platforms?

A. Sure, Ray helps deployment on main cloud suppliers (AWS, GCP, Azure) and integrates with Kubernetes for scalable orchestration.

Q5. What kinds of workloads profit from Ray?

A. Ray is right for distributed AI/ML mannequin coaching, hyperparameter tuning, large-scale knowledge processing, reinforcement studying, and serving AI fashions in manufacturing.

The media proven on this article will not be owned by Analytics Vidhya and is used on the Creator’s discretion.


Krishnaveni Ponna

Hey! I am a passionate AI and Machine Studying fanatic at present exploring the thrilling realms of Deep Studying, MLOps, and Generative AI. I get pleasure from diving into new initiatives and uncovering progressive methods that push the boundaries of know-how. I will be sharing guides, tutorials, and challenge insights primarily based alone experiences, so we are able to be taught and develop collectively. Be a part of me on this journey as we discover, experiment, and construct wonderful options on this planet of AI and past!

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