postgres=# CREATE EXTENSION pg_strom ;
CREATE EXTENSION
postgres=# explain select t1.a from t1 join t2 on t1.a=t2.a;
                              QUERY PLAN
-----------------------------------------------------------------------
 Custom Scan (GpuJoin) on t1  (cost=167.38..503.29 rows=32512 width=4)
   GPU Projection: t1.a
   GPU Join Quals [1]: (t1.a = t2.a) ... [nrows: 2550 -> 32512]
   GPU Outer Hash [1]: t1.a
   GPU Inner Hash [1]: t2.a
   ->  Seq Scan on t2  (cost=0.00..35.50 rows=2550 width=4)
(6 rows)