Perft(14) Weekly Status 2015-03-29
Symbolic has produced more than 8,600,000
perft(7) results so far, about 8.92% of the 96,400,068 needed.
Day count: 233
Average throughput: 36,910 results/day
Completed work units (87): 000-067 069-081 083-085 088-089 964
In progress (10): 068 082 086-087 090-095
Not yet started (868): 096-963
Work units in progress:
Code: Select all
WU# Comp% Machine
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068 67.0 betty
082 33.6 melissa
086 78.0 cynthia
087 82.4 gail
090 94.3 kristen
091 34.3 rocky
092 10.1 serra
093 18.4 amanda
094 2.1 megan
095 1.1 joni
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Independent results from Ankan and his program:
Test work units, all verified (7): 000 033 036 038 041-042 964
Production units (400): 400-799
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Total distinct completed work units (487): 000-067 069-081 083-085 088-089 400-799 964
Total uncompleted work units (478): 068 082 086-087 090-399 800-963
Project completion: 50.47%
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In the past week the combination of the 87 work units completed by Symbolic (using 128 bit signatures) and the 400 work units completed by Ankan's program (using 64 bit signatures) has passed the halfway point of the project's total work requirements. However, this does not include independent verification which has been done only for seven work units, less than one percent of the total.
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Each week, I update the text file at
https://dl.dropboxusercontent.com/u/316 ... 14/Largest which contains a list of positions and their
perft (7) subtotals; each position is the one with the largest subtotal of the corresponding work unit as determined by
Symbolic. These can be used by program authors for verification and speed tests. The positions are quite varied, and their subtrees contain many special move instances.
An example, from work unit 080:
[d]rnbqkbnr/pBp2ppp/8/4p3/3Pp3/8/PPP2PPP/RNBQK1NR b KQkq d3 0 4[/d]
Which has a
perft(7) subtotal of 120,073,988,416.