Chapter Contents 1. Discovering 2. Understanding Threads... 3. Setting Up 4. Setting Up Remote 5. Setting up Parallel 6. Using Windows 7. Visualizing 8. Seeing CLI at work 9. Using the CLI 10. Debugging 11. Using Groups ... 12. Data 13. Arrays 14. Action Points Glossary

5. Setting Up Parallel Debugging Sessions Debugging MPICH Applications Starting TotalView on an MPICH Job Attaching to an MPICH Job MPICH P4 procgroup Files Debugging HP Alpha MPI Applications Attaching to a HP Alpha MPI Job Debugging HP MPI Applications Attaching to an HP MPI Job Debugging IBM MPI (PE) Applications Preparing to Debug a PE Application Using Switch-Based Communication Performing Remote Logins Setting Timeouts Starting TotalView on a PE Job Setting Breakpoints Starting Parallel Tasks Attaching to a PE Job Attaching from a Node Running poe Attaching from a Node Not Running poe Debugging QSW RMS Applications Attaching to an RMS Job Debugging SGI MPI Applications Attaching to an SGI MPI Job Debugging Sun MPI Applications Attaching to a Sun MPI Job Displaying the Message Queue Graph Displaying the Message Queue Message Queue Display Overview Using Message Operations Diving on MPI Processes Diving on MPI Buffers Pending Receive Operations Unexpected Messages Pending Send Operations MPI Debugging Troubleshooting Debugging OpenMP Applications Debugging OpenMP Programs TotalView OpenMP Features OpenMP Platform Differences OpenMP Private and Shared Variables OpenMP THREADPRIVATE Common Blocks OpenMP Stack Parent Token Line Debugging PVM and DPVM Applications Supporting Multiple Sessions Setting Up ORNL PVM Debugging Starting an ORNL PVM Session Starting a DPVM Session Automatically Acquiring PVM/DPVM Processes Attaching to PVM/DPVM Tasks Reserved Message Tags Cleanup of Processes Debugging Shared Memory (SHMEM) Code Debugging UPC Programs Invoking TotalView Viewing Shared Objects Pointer to Shared Parallel Debugging Tips Attaching to Processes General Parallel Debugging Tips MPICH Debugging Tips IBM PE Debugging Tips