Performance on Test Suites as of March 31, 1998

Test Configuration

• DARKTHOUGHT as of March 31, 1998 with 8M transposition-table entries (4M per side), 1M King hash-table entries (512K per side), and 512K Pawn hash-table entries,

• Digital Unix 4.0d program development tools and operating system,

• 600MHz AlphaLX164 workstation (600MHz DEC Alpha-21164a EV56 CPU, 8KB/8KB on-chip I/D L1 caches, 96KB unified on-chip L2 cache, 2MB unified off-chip L3 cache, DEC PC164-LX mainboard, 2x 128MB/100MHz SDRAM-DIMMs = 256MB RAM).

Test-Suite Results

Test Suite	Time	Result	Speed
BS-2830   ( DARKTHOUGHT rating = 2720)	15 min.	18 / 27	280K nps
BT-2630   ( DARKTHOUGHT rating = 2521)	15 min.	27 / 30	310K nps
LCT-II     ( DARKTHOUGHT rating = 2610)	10 min.	28 / 35	302K nps
Bratko / Kopec	1 min.	18 / 24	269K nps
Encyclopedia of Chess Middlegames	5 sec.	518 / 879	291K nps
Win at Chess	5 sec.	288 / 300	317K nps
World's Greatest Chess Games	5 sec.	23 / 50	271K nps
1001 Winning Chess Sacrifices	5 sec.	829 / 1001	310K nps

Solution Times for BS-2830

#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	(in sec.)
109	17	-	9	-	29	14	-	20	148	#00
-	142	19	122	-	103	618	-	529	-	#10
243	342	95	18	-	-	28				#20

Solution Times for BT-2630

#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	(in sec.)
0	1	3	24	0	0	0	0	-	5	#00
1	9	206	2	6	-	2	2	26	1	#10
70	1	0	10	5	-	1	74	90	22	#20

Solution Times for LCT-II

#1	#2	#3	#4	#5	#6	#7	#8	#9	#10	(in sec.)
5	0	356	-	35	9	274	-	10	-	#00
30	108	183	0	2	0	1	71	11	4	#10
1	7	25	14	-	-	0	0	1	22	#20
6	2	7	-	-						#30

Measured Peak Speed = 900K nps

(in position ``8/8/7K/8/6p1/6k1/4R3/8 w - - 0 1'' from ECE3 with timing = 5 sec).