Hi Todd - Has your team looked at GraphBLAS [1] yet for MapD [2] now that Tim Davis has released a 2.0 reference C implementation (included in SuiteSparse 5.3) [3]? There is a GraphBLAS 2.0 CPU implementation in RedisGraph now [4] and official GraphBLAS 2.x GPU implementations are in the works.

[1] GraphBLAS http://graphblas.org

[2] OmniSci MapD DB https://github.com/omnisci/mapd-core

[3] SuiteSparse::GraphBLAS http://faculty.cse.tamu.edu/davis/suitesparse.html

[4] Previous Discussion https://news.ycombinator.com/item?id=18099520