IntGen¶

While it may be well known among HPC experts integration routines are often much more difficult to make fast than a simple loop. IntGen offers a simple implementation of one dimensional integration. It is a reference to how a domain specific language can be used to speed up numerical code.

Using IntGen’s expressions a user defines an integration expression that can combine both symbolics and discrete functions. From this integration expression, code is generated that efficiently evaluates the integral and provides the user with quadrature points and weight according to the specification given by the user.

As the project grows, IntGen may grow to do more but currently it is left to be simple allowing for novices to understand the basics of how Ignition implements DSL’s and code generators.

FLAME¶

FLAME, or Formal Linear Algebra Methods Environment, is a project for transforming the development of dense linear algebra libraries from an art reserved for experts to a science that can be understood by novice and expert alike. Using a simple language for defining loops, the algorithms are formally derived and allow for numerous variants to be produced.

Ignition defines a language for specifying FLAME operation and generating the worksheets and code. These operations are still under development.

Riemann¶

Riemann is a simple language for defining Riemann problems in the style of CLAWPACK. It allows a user to symbolically define the flux (or jacobian) based on the variables of the conserved state and will generate the kernel to be run at the cell interfaces.