Instant stop on exceptions and crashes – identify the source and data behind any crash with an easy to use comprehensive interface to application state.

Catch out-of-bounds data access as soon as it occurs, and consign memory leaks to history with Allinea DDT's in-built memory debugging tool.

Spot unusual data values and changes instantly from one to one million processes with smart highlighting and sparklines. Read more about sparklines in our blog.

“My group routinely debugs parallel code at over 100,000 processes using DDT”, Dr Richard Graham, Oak Ridge National Laboratory.

Step and display 220,000 processes in 1/10 of a second.

Monitor and control threads and processes individually and collectively – with powerful and fast process groups.

Intelligent aggregate views automatically compare and contrast program state at all scales. See process and thread anomalies instantly with the parallel stack display – the scalable view that narrows down problems for any level of concurrency: from a handful of processes and threads to hundreds of thousands.

MPI message queue status and MPI history logging.

Intelligent aggregate views automatically compare and contrast program state at all scales. See process and thread anomalies instantly with the parallel stack display – the scalable view that narrows down problems for any level of concurrency: from a handful of processes and threads to hundreds of thousands.

Allinea DDT will work with the widest range of parallel programming models, including:

• MPI
• OpenMP
• multithreaded and hybrid multithreaded parallel codes
• PGAS languages
• Coarray Fortran
• UPC
• CUDA
• OpenACC
• C
• C++
• Fortran
• Fortran 90

Scalable printf debugging - instrument your code with scalable tracepoints – no recompilation necessary.

Offline batch modes – debug while you sleep and submit an offline debug run to your queue from the command line and receive a text or HTML error and trace report from DDT when the job is done. Read more about offline debugging in our white paper and blog.

Browse arrays and gather statistics – over all your processes in parallel – with powerful filtering to search petabytes in parallel.

Visualize array data across multiple processes.

Export to industry standard data formats HDF5 and CSV.

Navigate through local variables, fortran modules, stack frames and complex data structures with ease.

Built-in static analysis warns about bugs before you've even hit them.

Syntax-highlighting support for Fortran77, Fortran90, C and C++.

Integrated static analysis identifies detected warnings and errors – potentially vital answers for tracking down bugs quickly.

Extensible pretty printing of complex data structures – with built in support for C++ STL, Boost, and Qt.