store partial sums in shared memory. almost 2x pixar performance
use 6 threads per row. slower at the moment
align to 512 byte boundaries instead of 256
group threads to process each vertex within a single block
got shared mem working okay
have first threads do conseq load
another thread/outputelem impl
loop unrolled version
working on efficient write to v_out
get efficient writing working
cleanup
enable CustomGPU in perf benchmarks
started on coo part