Query Q88 (degree of parallelism: 8)

select  *
from
 (select count(*) h8_30_to_9
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk   
     and ss_hdemo_sk = household_demographics.hd_demo_sk 
     and ss_store_sk = s_store_sk
     and time_dim.t_hour = 8
     and time_dim.t_minute >= 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2)) 
     and store.s_store_name = 'ese') s1,
 (select count(*) h9_to_9_30 
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk
     and ss_hdemo_sk = household_demographics.hd_demo_sk
     and ss_store_sk = s_store_sk 
     and time_dim.t_hour = 9 
     and time_dim.t_minute < 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2))
     and store.s_store_name = 'ese') s2,
 (select count(*) h9_30_to_10 
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk
     and ss_hdemo_sk = household_demographics.hd_demo_sk
     and ss_store_sk = s_store_sk
     and time_dim.t_hour = 9
     and time_dim.t_minute >= 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2))
     and store.s_store_name = 'ese') s3,
 (select count(*) h10_to_10_30
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk
     and ss_hdemo_sk = household_demographics.hd_demo_sk
     and ss_store_sk = s_store_sk
     and time_dim.t_hour = 10 
     and time_dim.t_minute < 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2))
     and store.s_store_name = 'ese') s4,
 (select count(*) h10_30_to_11
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk
     and ss_hdemo_sk = household_demographics.hd_demo_sk
     and ss_store_sk = s_store_sk
     and time_dim.t_hour = 10 
     and time_dim.t_minute >= 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2))
     and store.s_store_name = 'ese') s5,
 (select count(*) h11_to_11_30
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk
     and ss_hdemo_sk = household_demographics.hd_demo_sk
     and ss_store_sk = s_store_sk 
     and time_dim.t_hour = 11
     and time_dim.t_minute < 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2))
     and store.s_store_name = 'ese') s6,
 (select count(*) h11_30_to_12
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk
     and ss_hdemo_sk = household_demographics.hd_demo_sk
     and ss_store_sk = s_store_sk
     and time_dim.t_hour = 11
     and time_dim.t_minute >= 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2))
     and store.s_store_name = 'ese') s7,
 (select count(*) h12_to_12_30
 from store_sales, household_demographics , time_dim, store
 where ss_sold_time_sk = time_dim.t_time_sk
     and ss_hdemo_sk = household_demographics.hd_demo_sk
     and ss_store_sk = s_store_sk
     and time_dim.t_hour = 12
     and time_dim.t_minute < 30
     and ((household_demographics.hd_dep_count = 4 and household_demographics.hd_vehicle_count<=4+2) or
          (household_demographics.hd_dep_count = 2 and household_demographics.hd_vehicle_count<=2+2) or
          (household_demographics.hd_dep_count = 0 and household_demographics.hd_vehicle_count<=0+2))
     and store.s_store_name = 'ese') s8
;

Measured execution times:
4000MB: 3677
4000MB-sp(lt0.2/ts5/min10/max100): 3791
8000MB: 3685
8000MB-sp(lt0.2/ts5/min10/max100): 3725