This repository contains 2 models for testing the LLNL-modified version of ROSS. They demonstrate the use of the time class, LP interface, and event cancellation.

matrix:

A model used for debugging. It is kind of like PHOLD, but also enables proving that messages were received in order, using a finite ring matrix algebra.

matrix-cancel:

A model used for debugging and illustration of event cancellation (retraction). Also exercises commit function.

1. Build the LLNL-modified ROSS:

   cd ross/src
   # Edit Makefile to set copmiler name (one of the first lines)
   # currectly the compiler is mpicxx (MPI C++ compiler necessary).
   # Make and copy library to ../lib directory:
   make
   make install
   cd ../..
   

2. Build matrix model:

   cd matrix
   # Set compiler also in compile.matrix-model
   # Build:
   . compile.matrix-model
   cd ..
   

3. Run test:

   cd matrix
   # Test run script usus mpirun to launch a parallel job.
   # this is a small test and runs as is on many login nodes,
   # workstations, and laptops. For other machines, getting
   # a node allocation might be required first, and perhaps
   # replacing mpirun with e.g. srun.
   ./run.matrix-model
   
   # The output of the test run can be compared for correctness
   # with sample output at the end of the run.matrix-model file.
   # See that file for more details.
   cd ..
   

4. Build matrix-cancel model:

   cd matrix-cancel
   . compile.matrix-cancel
   cd ..
   

5. Run matrix-cancel test:

   cd matrix-cancel
   ./runloop.sh
   

   Test takes maybe a couple of minutes. Lots of text data is eventually dumped to the screen. This data is also saved in files with names run.out.x.y where x is number of nodes (1 in runloop.sh at this time), and y is number of MPI tasks per node.

   At the end of the test, the name of each run.out.* file is printed in between #'s. After each name is printed is a diff of relevant data betwen this output file and a sequential run. If the runs (code) are correct, there should be no output from diff, and just the file names are listed.

6. Enjoy :-)

For release details and restrictions, please read the LICENSE and NOTICE files.

LLNL-CODE-764399