heavydb

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

http://www.timestored.com/time-series-data/column-oriented-d... > Open Source Column-Oriented Databases: There are three available open source column databases, all were based on works of research groups that later saw commercial spinoffs. C-Store produced vertica, MonetDB spawned Vectorwise and LucidDB was DynamoBI. Each project has stagnated as the team around them moved on to commercial endeavours. Only MonetDB appears to be still actively developed, it's also the one that seems most feature complete as we'll see later. Is the above an accurate characterization of OSS column-oriented databases? There is also MapD which uses GPUs, https://github.com/mapd/mapd-core > MapD Core is an in-memory, column store, SQL relational database that was designed from the ground up to run on GPUs.