mdb

Welcome to mdb’s documentation! mdb is a debugger aimed at parallel programs using the MPI programming paradigm. mdb acts as a wrapper around different serial debugger backends e.g., gdb and lldb. It supports the following languages:

• C

• C++

• Fortran

Getting Started:

• Installation
  • Windows Support
  • Standard Installation (UNIX)
  • For Developers
• Quick Start
  • An example program
  • Launching the mdb Client
  • Attaching to the mdb Client
  • Broadcast mode
  • Plotting variables across ranks
  • Exiting mdb
  • Scripting the mdb Debug Session
  • Multi-node debugging (HPC)
• Changing the Output Mode
  • The Example Program
  • Launching the Debug Target
  • Separate Output Mode (Default)
  • Combined Output Mode
• Debugging AMD GPU Kernels
• Compile with Debug Symbols
• Launch the Debugger
• Attach the Debugger
• Inspecting Memory