DINE

DINE

DINE (Durham Intelligent NIC Environment) is a small supercomputer attached to Cosma, which we use to prototype some of our algorithms. Access is through the Cosma loging nodes (login8.cosma.dur.ac.uk). As Cosma and DINE feature the same generation of AMD chips, you can compile on Cosma8 and ship the executable to DINE.

module load git
module load autoconf 
module load python
module load intel_comp
module load compiler-rt tbb compiler
module load intel_mpi
module load gnu_comp/13.1.0
export I_MPI_CXX=icpx
./configure --enable-exahype --enable-blockstructured --enable-loadbalancing --enable-particles CC=icx CXX=icpx --with-multithreading=omp --with-mpi=mpiicpc CXXFLAGS="-std=c++20 -qopenmp -funroll-loops -Ofast"

There are a few things to consider whenever you use DINE:

• The default Python version usually is a little bit too old, so switching to a more recent Python package is reasonable.
• Don't use the -xHost flag in configure. The resulting code will crash on DINE. You can use

  -march=native

• Try not to dump data into the home directory, as this one is backe up and has a quota. DINE mounts the Cosma 5 data directory (/cosma5/data/do009/myaccount) which you should use to store data files.