Attendees: Sebastian, Albert, David, Konrad, Ramakrishna, Uday, Tobias
Uday Bondhugula from IBM XL Compiler team took part to discuss XL polyhedral design and compare it to Graphite.
Topics that where discussed (unordered):
- Data dependency analyisis
Performance issues (40965 and gfortran.dg/cray_pointers_2.f90)
- Removing transitive dependencies
- SCoP detection
- SCoP size
- Number of parameters / number of data references
- XL allows non affine access functions a[b[i]]
- Scheduling / Scattering
- How to access "efficient" just a subset of statements
- Reentrance
- Libraryies used
- Graphite uses PPL
- XL uses Coin/ISL/polylib/pip