MapD tries to cache compressed versions of the &quot;hot&quot; columns of a table in GPU RAM, which could be up to 256GB per node across 8 GPUs.  If necessary though it can stream the data from CPU RAM - of course such queries won&#x27;t be as fast.<p>Yes you could imagine accelerating index lookups with GPUs (I think there&#x27;s some research papers on this subject already) - maybe a future project for us.