The following programs are required to build Notus:

• a Fortran compiler and a C compiler (Intel ≥ 18; GCC ≥ 7.3)
• autoconf (≥ 2.69)
• CMake (≥ 3.7.2), a cross-platform build system
• Git, distributed version control system
• an MPI library for parallel coding
• blas et lapack libraries installed on the system
• Doxygen, a documentation generator from source code (optional)

Notus has two compilation switches: either debug or release:

• The debug version is compiled without optimizations. Useful for developers, or for one to know more precisely how and where his run crashed.
• The release version is optimized for high performance runs.

Notus has been successfully built with the following configurations:

• GNU compilers and Open MPI,
• Intel compilers and Intel MPI.

Test cases yields the same results in every built listed above.