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 AMD's FX-8150 "Zambezi" - Bulldozer in Action + Diep Chess test Benchmark

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PostSubject: AMD's FX-8150 "Zambezi" - Bulldozer in Action + Diep Chess test Benchmark   Fri Oct 14, 2011 11:00 am

AMD's FX-8150 "Zambezi" - Bulldozer in Action




























DIEP Chess



DIEP chess is simulating a chess game in which every possible move by
the two opponents is simulated. The software uses exclusively integer
operations to analyze the different permutations and combinations of
moves. DIEP Chess is not optimized for one or the other cache strategy
or size, however, it seems to get a major boost out of HyperThreading as
shown below using the example of Intel's Core i7 965 (HT vs HT-).









Diep chess is exclusively integer based, incorporating a plethora of
chess knowledge based on real chess play in an attempt to better
understand and simulate the human mind. As a result branches and branch
predictions play a major role for its execution speed. As this makes the
codesize quite big, also the L1 misses play a minor role together with
the latency of the memory controller.


This one is really interesting. Given the fact that eight integer cores
should crunch away the nodes like Deep Thought, it is rather
disappointing to see the FX-8150 once again trounced by the 6-core
Thuban, not to mention the rest of the world. We can always blame it on
Vincent but DIEP appears a prime example of how the small L1 caches
together with the high access latencies reduce performance to literally
60% of what we would have expected.


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Last Updated ( Oct 12, 2011 at 12:54 AM )






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