TotalView

TotalView is a powerful and widely used debugger primarily for high-performance computing (HPC) environments. Developed by Arm, TotalView allows developers to find and fix bugs in complex, parallel, and distributed applications. It supports a wide range of programming languages, including C, C++, and Fortran, and is designed to work with various parallel programming models such as MPI, OpenMP, and CUDA.

One of TotalView's key strengths is its ability to handle large-scale parallelism. It provides advanced features for visualizing and controlling the execution of thousands of threads or processes simultaneously. This includes capabilities for setting breakpoints, stepping through code, examining variable values, and analyzing memory usage. The debugger's interface is designed to be intuitive, even for very large applications, offering graphical representations of program flow and data.

TotalView also offers specialized tools for performance analysis. It can help identify performance bottlenecks, such as inefficient code sections or communication overhead in parallel programs. Its integration with other profiling tools allows developers to gain a comprehensive understanding of their application's behavior. TotalView is frequently used on supercomputers and large clusters, making it an essential tool for researchers and engineers working on computationally intensive problems.