boltzgen - Symbolic generation of LBM kernels

Age	Commit message (Collapse)	Author
2019-11-02	Import `sympy.ccode` inside templates instead of as argument	Adrian Kummerlaender

2019-10-31	Call symbolic generator inside code templates	Adrian Kummerlaender
	This paves the way for dropping in other LBM collision models. As a side benefit the default momenta calulcation is now fully inlined where possible.
2019-10-29	Don't try to reuse population layout for moment array indexingv0.1.1	Adrian Kummerlaender

2019-10-29	Unify AOS, SOA specific cell preshift between targets	Adrian Kummerlaender
	SOA and AOS should not be target specific, neighbor offset calculation / bijection between gid and cell coordinates should be customizable.
2019-10-27	Optionally generate cell-list-based OpenCL dispatch functions	Adrian Kummerlaender
	Requires different function naming as OpenCL 1.2 doesn't support overloads. The OpenCL kernel code generated using this commit was successfully tested on an actual GPU. Time to set up some automatic validation.
2019-10-27	Accept cell id as parameter in OpenCL functions	Adrian Kummerlaender
	It is more flexible to place OpenCL thread ID dependent dispatching in a separate function.
2019-10-27	Separate functions into separate template files	Adrian Kummerlaender
	Selection of the desired templates is possible via a new `functions` parameter.