stefan kersten wrote:
(2) personally i much prefer the list-like interface provided by the stream-fusion powered libraries (ndp, uvector, vector). can't the stream-fusion framework and correspondingly the vector interface be separated from the memory representation, provided a particular concrete representation comes up with a stream/unstream pair? then it would be easy to swap out the underlying representation according to the required characteristics.
The vector library does this. The problem is that just stream/unstream isn't sufficient to get good performance. In fact, stream fusion alone is suboptimal for many array algorithms since it can't handle array operations which require random access. In particular, it isn't enough for DPH. We need a more powerful framework which, hopefully, will also be useful for non-DPH arrays. Roman