Hi people,
There is a benchmark from latest BOINC client running on single socket Nehalem system(2.933Ghz) on Xtremesystems:
http://www.xtremesystems.org/forums/showpost.php?p=3122412&postcount=414

My question is how many cores does the client support and will it work properly with HyperThreading enabled cores(like Nehalem is).
The above linked score is with HT turned off.Here is the one with HT -> ON:
http://www.xtremesystems.org/forums/showpost.php?p=3106435&postcount=350

Seems unrealisticly that 8 logical cores can score double than 4 physical ones...Is there a glitch somewhere and HT isn't actually working but showing the total number of cores as 8,or does it recognize HT enabled chip properly and works accordingly?From other benchmarks the HT brings around 20-40% increase in performance when enabled,in multithreaded applications.In BOINC,it's almost a double which is kinda hard to swallow.

Thanks in advance,
Ivan

It's been awhile since all the troubles trying to benchmark HT machines. I think the final solution was to run the benchmarks on each logical CPU and average the scores.

This still can give slightly high results in some cases. Particularly when half of the benchmark processes finish quickly.

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BOINC WIKI

BOINCing since 2002/12/8

Thanks for the replies people.
So to recap,the HT enabled Nehalem(8 logical cores) system has no chance having(according to built in benchmark tool) double the score of 4 cores?How reliable is the built-in tool in terms of predicting the actual points per day?
So the system would need to run the actual projects in order to be seen if it can produce anywhere near the score the benchmark is showing(8x2800 vs 4x3100 and 8x7000 vs 4x7000).

@Sekerob

I'm a BOINC noob,i just started running my client, sorry if it was a noobish question i asked :).Thanks for the response and explanation ;).

Cheers guys
Ivan

Thanks for the replies people.
So to recap,the HT enabled Nehalem(8 logical cores) system has no chance having(according to built in benchmark tool) double the score of 4 cores?

How reliable is the built-in tool in terms of predicting the actual points per day?

Ivan:


Everything you find in the fan magazines and sites are mere speculation and guesses.

I believe that Nehalem will be as drastic a step forward as was P4 to C2D.

I have been following this development, with eager anticipation:

Intel Slates "Nehalem" for Q4 2008

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If everyone is thinking alike, someone isn't thinking. - General George Patton