User Guide (23.08)

Overview

• Overview
  
  • Performance & Cost Benefits
  • Ease of Use
  • A Unified AI framework for ETL + ML/DL
  • Technical Support

Qualification Tool

• Qualification Tool
  
  • How to use the Qualification tool
  • Running the Qualification tool standalone for CSP environments on Spark event logs
    
    • User Tools Prerequisites and Setup for CSP environments
    • Qualify CPU Workloads for Potential Cost Savings and Acceleration with GPUs
  • Running the Qualification tool standalone on Spark event logs
    
    • Prerequisites
    • Step 01: Download the tools jar and Apache Spark 3 Distribution
    • Step 02: Run the Qualification tool
    • Qualification tool options
    • The Qualification tool output
  • Running using a Spark Listener
    
    • Prerequisites
    • Download the tools jar
    • Configuration
    • Run the Spark application
  • Running the Qualification tool inside a running Spark application using the API
    
    • Prerequisites
    • Download the tools jar
    • Modify your application code to call the api’s
    • Run the Spark application
  • Understanding the Qualification tool output
    
    • Detailed App report
    • Stages report
    • Execs report
    • MLFunctions report
    • MLFunctions total duration report
  • Output Formats
    
    • HTML Report
      
      • Application Recommendations Summary
      • App-Details View
      • Raw Data
      • Per-SQL Data
    • Text and CSV files
      
      • Application Report Summary
      • Per SQL Query Report Summary
      • Detailed App Report
        
        • Entire App report
        • Per SQL report
        • Stages report
        • Execs report
  • How to compile the tools jar

Getting Started

• Overview
  
  • Spark GPU Scheduling Overview
  • Spark workload qualification
  • Spark benchmark
• RAPIDS Accelerator with On-premise Cluster or Local Mode
  
  • Spark Deployment Methods
  • Apache Spark Setup for GPU
  • Install Spark
  • Download the RAPIDS Accelerator jar
  • Install the GPU Discovery Script
  • Local Mode
  • Spark Standalone Cluster
  • Running on YARN
    
    • YARN 3.1.3 with Isolation and GPU Scheduling Enabled
    • YARN 2.10 with Isolation and GPU Scheduling Enabled
    • YARN without Isolation
    • MIG GPU on YARN
      
      • YARN version 3.3.0+
      • YARN version 3.1.2 until 3.3.0
  • Running on Kubernetes
  • RAPIDS Accelerator Configuration and Tuning
    
    • Example Command Running on YARN
  • Example Join Operation
  • Enabling RAPIDS Shuffle Manager
  • Advanced Configuration
  • Monitoring
  • Debugging
  • Out of GPU Memory
• RAPIDS on AWS EMR
  
  • Using the Qualification and Bootstrap tools
  • Qualify CPU Workloads for GPU Acceleration
  • Configure and Launch AWS EMR with GPU Nodes
    
    • Launch an EMR Cluster using AWS Console (GUI)
      
      • Step 1: EMR Release and Application Bundle Selection
      • Step 2: Hardware
      • Step 3: General Cluster Settings
      • Step 4: Edit Software Configuration
      • Step 5: Security
      • Finish Cluster Configuration
    • Launch an EMR Cluster using AWS CLI
    • Running the Spark RAPIDS User Tools Bootstrap for Cluster Spark Settings
    • Running an Example Join Operation Using Spark Shell
    • Submit Spark jobs to an EMR Cluster Accelerated by GPUs
    • Running GPU Accelerated Mortgage ETL Example using EMR Notebook
      
      • Create EMR Notebook and Connect to EMR GPU Cluster
      • Run Mortgage ETL PySpark Notebook on EMR GPU Cluster
• RAPIDS Accelerator on Databricks
  
  • Prerequisites
  • Limitations
  • Start a Databricks Cluster
  • RAPIDS Accelerator for Apache Spark Docker container for Databricks
  • Import the GPU Mortgage Example Notebook
  • Hints
• RAPIDS Accelerator on GCP Dataproc
  
  • Create a Dataproc Cluster Accelerated by GPUs
    
    • Create a Dataproc Cluster Using T4s
    • Build a Custom Dataproc Image to Reduce Cluster Init Time
    • Create a Dataproc Cluster using MIG with A100s
    • Cluster Creation Troubleshooting
  • Run Python or Scala Spark Notebook on a Dataproc Cluster Accelerated by GPUs
  • Submit Spark jobs to a Dataproc Cluster Accelerated by GPUs
  • Diagnosing a GPU Cluster
  • Bootstrap GPU Cluster with Optimized Settings
  • Qualify CPU Workloads for GPU Acceleration
  • Tune Applications on GPU Cluster
• RAPIDS Accelerator on Azure Synapse Analytics
• RAPIDS and Kubernetes
  
  • Prerequisites
  • Docker Image Preparation
  • Running Spark Applications in the Kubernetes Cluster
    
    • Submitting a Simple Test Job
    • Running an Interactive Spark Shell
    • Running PySpark in Client Mode
  • Running Spark Applications using Spark Operator
• RAPIDS and Alluxio
  
  • Prerequisites
  • Alluxio setup
  • RAPIDS Configuration
  • Alluxio auto mount for AWS S3 buckets
  • Configure whether the disks used by Alluxio are fast
  • Alluxio Troubleshooting
  • Alluxio reliability
    
    • Dealing with Client side delays in response from master or workers
    • Worker server tunings to fail fast
    • The logs
    • Auto start Alluxio the master and workers
  • Alluxio limitations
    
    • Alluxio does not sync metadata from UFS(e.g. S3) by default
  • Alluxio metrics
    
    • Monitor Alluxio live metrics based on Alluxio Master Web
    • Monitor Alluxio live metrics based on Grafana with Prometheus
      
      • Config Prometheus when creating Databricks cluster
      • Install and start Grafana locally
      • Forward the Prometheus port 9090 to local port
      • Config local Grafana to monitor the live metrics
      • View a specific live Alluxio metrics in Prometheus Web UI
    • View Alluxio historic metrics based on Grafana with Prometheus
      
      • Install and start Prometheus locally
      • Restore historic metrics into Prometheus
      • Start Prometheus
      • View Alluxio historic metrics based on Grafana
      • View a specific historic Alluxio metrics in Prometheus Web UI
• Spark Workload Qualification
  
  • Qualification and Profiling tool
    
    • Requirements
    • How to use
  • Get the Explain Output
    
    • Using the Configuration Flag for Explain Only Mode
      
      • Requirements
      • Usage
    • How to use the Function Call
      
      • Requirements with Spark 3.X
      • Function Documentation
      • Usage
  • Run Spark applications with Spark RAPIDS Accelerator on a GPU Spark Cluster
    
    • Requirements
    • How to use
• RAPIDS Accelerator on Oracle Cloud Infrastructure
• Spark3 GPU Configuration Guide on Yarn 3.2.1

Tuning

• RAPIDS Accelerator for Apache Spark Tuning Guide
  
  • Number of Executors
  • Number of Tasks per Executor
  • Pooled Memory
  • Pinned Memory
  • Spill Storage
  • Locality Wait
  • Number of Concurrent Tasks per GPU
  • Shuffle Partitions
  • Input Files
  • Input Files’ column order
  • Input Partition Size
    
    • Input Partition Size with DataSource API
    • Input Partition Size with Hive API
  • Input File Caching
  • Columnar Batch Size
    
    • File Reader Batch Size
  • Metrics
    
    • SQL
    • Task
    • Time taken on the GPU
      
      • Spilling
    • Time taken on the CPU
  • Window Operations
• Best Practices on the RAPIDS Accelerator for Apache Spark
  
  • Workload Qualification
  • Performance Tuning
  • How to handle GPU OOM issues
    
    • Reduce the number of concurrent tasks per GPU
    • Install CUDA 11.5 or above version
    • Identify which SQL, job and stage is involved in the error
    • Increase the number of tasks/partitions based on the type of the problematic stage
      
      • Table Scan Stage
      • Shuffle Stage
    • Reduce columnar batch size and file reader batch size
    • File an issue or ask a question on the GitHub repo

Profiling Tool

• Profiling Tool
  
  • How to use the Profiling tool
    
    • Prerequisites
    • Step 01-A: Download the tools jar
    • Step 01-B: Download the Apache Spark 3 distribution
    • Step 2 How to run the Profiling tool
  • Understanding Profiling tool detailed output and examples
    
    • A. Collect Information or Compare Information(if more than 1 event logs are as input and option –compare is specified)
    • B. Analysis
    • C. Health Check
    • D. Recommended Configuration
  • Generating Visualizations
  • Profiling tool options
  • Auto-Tuner support
  • Profiling tool metrics definitions

Additional Functionality

• RAPIDS Accelerator for Apache Spark ML Library Integration
  
  • Existing ML Libraries
    
    • RMM
  • GPU accelerated ML Library development
    
    • ColumnarRdd
    • Examples of Spark ML Implementations leveraging ColumnarRdd
• RAPIDS Shuffle Manager
  
  • Multi-Threaded Mode
  • UCX Mode
    
    • System Setup
      
      • Baremetal
        
        • Rocky UCX RPM
    • Docker Containers
    • Validating UCX Environment
    • Spark App Configuration
      
      • Databricks
      • UCX Environment Variables
    • Fine Tuning
      
      • Bounce Buffers
      • Spillable Store
        
        • Shuffle Garbage Collection
      • Known Issues
• Apache Iceberg Support
  
  • Apache Iceberg Versions
  • Reading Tables
    
    • Metadata Queries
    • Row-level Delete and Update Support
    • Schema Evolution
    • Data Formats
      
      • Parquet
      • ORC
      • Avro
    • Reader Split Size
  • Writing Tables
• Delta Lake Support
  
  • Reading Delta Lake Tables
    
    • Data Queries
    • Metadata Queries
  • Writing Delta Lake Tables
    
    • Delta Lake Versions Supported For Write
    • Write Operations Supported
      
      • Automatic Optimization of Writes
    • RapidsDeltaWrite Node in Query Plans
  • Merging Into Delta Lake Tables
    
    • merge
    • RapidsProcessDeltaMergeJoin Node in Query Plans
  • Delete Operations on Delta Lake Tables
    
    • num_affected_rows Difference with Databricks
  • Update Operations on Delta Lake Tables
• RAPIDS Accelerator File Cache
  
  • Limitations of the File Cache
  • Configuring the File Cache
  • Tuning File Cache Performance
    
    • Immutable Input Files

Frequently Asked Questions

• Frequently Asked Questions
  
  • What versions of Apache Spark does the RAPIDS Accelerator for Apache Spark support?
  • Which distributions are supported?
  • What CUDA versions are supported?
  • What hardware is supported?
  • How can I check if the RAPIDS Accelerator is installed and which version is running?
  • What parts of Apache Spark are accelerated?
  • Dataset
  • What is the road-map like?
  • How much faster will my query run?
  • What operators are best suited for the GPU?
  • Are there initialization costs?
  • How long does it take to translate a query to run on the GPU?
  • How can I tell what will run on the GPU and what will not run on it?
  • Why does the plan for the GPU query look different from the CPU query?
  • explain() spark.rapids.sql.enabled false
  • How are failures handled?
  • How does the Spark scheduler decide what to do on the GPU vs the CPU?
  • Is Dynamic Partition Pruning (DPP) Supported?
  • Is Adaptive Query Execution (AQE) Supported?
  • Why does my query show as not on the GPU when Adaptive Query Execution is enabled?
  • Are cache and persist supported?
  • Can I cache data into GPU memory?
  • Is PySpark supported?
  • Are the R APIs for Spark supported?
  • Are the Java APIs for Spark supported?
  • Are the Scala APIs for Spark supported?
  • Is the GPU needed on the driver? Are there any benefits to having a GPU on the driver?
  • Are table layout formats supported?
  • How many tasks can I run per executor? How many should I run per executor?
  • spark.executor.cores spark.task.resource.gpu.amount spark.rapids.sql.concurrentGpuTasks
  • Why are multiple GPUs per executor not supported?
  • Why are multiple executors per GPU not supported?
  • Is Multi-Instance GPU (MIG) supported?
  • How can I run custom expressions/UDFs on the GPU?
    
    • RAPIDS Accelerated UDFs
    • Automatic Translation of Scala UDFs to Apache Spark Operations
    • Optimize a row-based UDF in a GPU operation
  • Why is the size of my output Parquet/ORC file different?
  • Failed to open the timezone file
  • Why am I getting an error when trying to use pinned memory?
  • Why am I getting a buffer overflow error when using the KryoSerializer?
  • Why am I getting “Unable to acquire buffer” or “Trying to free an invalid buffer”?
  • Is speculative execution supported?
  • Why is my query in GPU mode slower than CPU mode?
  • Why is the Avro library not found by RAPIDS?
  • What is the default RMM pool allocator?
  • RetryOOM SplitAndRetryOOM
  • Encryption Support
  • Can the RAPIDS Accelerator work with Spark on Ray (RayDP)?
  • I have more questions, where do I go?

Examples

• Examples
  
  • Benchmarks

Contact Us

• Contact Us
  
  • Technical Support
  • Issues and Discussions