Troubleshooting

This section describes known problems and questions you may encounter when analyzing your application with the Intel® VTune™ Amplifier, and suggests solutions:

• Error Message: Application Sets Its Own Handler for Signal
  
• Error Message: Cannot Load Data File
  
• Error Message: Cannot Open Data
  
• Error Message: Collection Failed. Cannot Copy File...
  
• Error: Make Sure You Have Root Privileges to Analyze Processor Graphics Hardware Events
  
• Error Message: No Pre-built Driver Exists for This System
  
• Error Message: Problem Accessing the Sampling Driver
  
• Error Message: Required Key Not Available
  
• Error Message: Stack Size Is Too Small
  
• Error Message: Symbol File Is Not Found
  
• Problem: 'Events= Sample After Value (SAV) * Samples' Is Not True If Multiple Runs Are Disabled
  
• Problem: Guessed Stack Frames
  
• Problem: Inaccurate Sum in the Grid
  
• Problem: Platform Not Authorized
  
• Problem: Same Functions Are Compared As Different Instances
  
• Problem: Skipped Stack Frames
  
• Problem: Stack in the Top-Down Tree Window Is Incorrect
  
• Problem: Stacks in Call Stack and Bottom-Up Panes Are Different
  
• Problem: System Functions Appear in the User Functions Only Mode
  
• Problem: VTune Amplifier is Slow to Respond When Collecting or Displaying Data
  
• Problem: Unexpected Paused Time
  
• Problem: {Unknown Timer} in the Platform Power Analysis Viewpoint
  
• Problem: Unknown Critical Error Due to Disabled Loopback Interface
  
• Problem: Unknown Frames
  
• Problem: Unreadable Text in Intel VTune Amplifier on OS X*
  
• Problem: Wrong Data for Short Runs on the Intel® Xeon Phi™ Coprocessor
  
• Issues and Limitations