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A workflow that distributes tasks across multiple LLM calls simultaneously, aggregating results to handle complex or large-scale operations efficiently.

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Quick Start

1

Install Package

First, install the PraisonAI Agents package:
pip install praisonaiagents
2

Set API Key

Set your OpenAI API key as an environment variable in your terminal:
export OPENAI_API_KEY=your_api_key_here
3

Create a file

Create a new file app.py with the basic setup:
from praisonaiagents import Agent, Workflow
from praisonaiagents import parallel

# Create parallel research agents
market_researcher = Agent(
    name="MarketResearcher",
    role="Market Research Analyst",
    goal="Research market trends and opportunities",
    instructions="Analyze market trends. Provide concise market insights."
)

competitor_researcher = Agent(
    name="CompetitorResearcher", 
    role="Competitive Intelligence Analyst",
    goal="Research competitor strategies",
    instructions="Analyze competitors. Provide key competitive insights."
)

customer_researcher = Agent(
    name="CustomerResearcher",
    role="Customer Research Analyst", 
    goal="Research customer needs and behaviors",
    instructions="Analyze customer segments. Provide customer insights."
)

# Create aggregator agent
aggregator = Agent(
    name="Aggregator",
    role="Research Synthesizer",
    goal="Synthesize research findings",
    instructions="Combine all research findings into a comprehensive summary."
)

# Create workflow with parallel execution
workflow = Workflow(
    steps=[
        parallel([market_researcher, competitor_researcher, customer_researcher]),
        aggregator
    ]
)

# Run workflow - all researchers work in parallel, then aggregator summarizes
result = workflow.start("Research the AI industry")
print(result["output"])
4

Start Workflow

Type this in your terminal to run your workflow:
python app.py
Requirements
  • Python 3.10 or higher
  • OpenAI API key. Generate OpenAI API key here. Use Other models using this guide.
  • Basic understanding of Python and async programming

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Understanding Parallelisation

What is Parallelisation?

Parallelisation enables:
  • Concurrent execution of multiple tasks
  • Improved performance through parallel processing
  • Efficient handling of independent operations
  • Aggregation of parallel task results

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Features

Parallel Execution

Run multiple tasks simultaneously for improved performance.

Async Support

Built-in support for asynchronous execution.

Result Aggregation

Combine results from parallel tasks efficiently.

Process Control

Monitor and manage parallel task execution.

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Configuration Options

from praisonaiagents import Workflow, WorkflowContext, StepResult
from praisonaiagents import parallel

# Define parallel workers
def worker1(ctx: WorkflowContext) -> StepResult:
    return StepResult(output="Result from worker 1")

def worker2(ctx: WorkflowContext) -> StepResult:
    return StepResult(output="Result from worker 2")

def worker3(ctx: WorkflowContext) -> StepResult:
    return StepResult(output="Result from worker 3")

# Aggregator combines parallel results
def aggregate(ctx: WorkflowContext) -> StepResult:
    outputs = ctx.variables.get("parallel_outputs", [])
    return StepResult(output=f"Combined: {len(outputs)} results")

# Create workflow with parallel execution
workflow = Workflow(
    steps=[
        parallel([worker1, worker2, worker3]),
        aggregate
    ]
)

# Async workflow execution
import asyncio

async def run_workflow():
    result = await workflow.astart("Start parallel work")
    return result

result = asyncio.run(run_workflow())

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Troubleshooting

Execution Issues

If parallel execution fails:
  • Check async configuration
  • Verify task independence
  • Monitor resource usage

Result Aggregation

If aggregation is incorrect:
  • Review task outputs
  • Check context connections
  • Verify aggregator logic

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Next Steps

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For optimal results, ensure your parallel tasks are truly independent and your system has sufficient resources to handle concurrent execution.