which stockfish build to use

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h1a8
Posts: 396
Joined: Fri Jun 04, 2010 5:23 am

which stockfish build to use

Post by h1a8 » Thu May 16, 2019 4:34 am

I have an i5-8250u processor. What will be the best (fastest and strongest) build?
x64 bmi, x64 popcnt, or regular x64?

mwyoung
Posts: 1464
Joined: Wed May 12, 2010 8:00 pm

Re: which stockfish build to use

Post by mwyoung » Thu May 16, 2019 4:56 am

h1a8 wrote:
Thu May 16, 2019 4:34 am
I have an i5-8250u processor. What will be the best (fastest and strongest) build?
x64 bmi, x64 popcnt, or regular x64?
Double click on the exe file, and type bench in the window. And see what build runs fastest on your computer.....
Professing themselves to be wise, they became fools,

BeyondCritics
Posts: 340
Joined: Sat May 05, 2012 12:48 pm
Location: Bergheim

Re: which stockfish build to use

Post by BeyondCritics » Wed May 22, 2019 5:06 am

Open "Windows Powershell" or a command window, "cd <path to executables>" and try in turn "<name>.exe bench". If the command terminates immediately, you cannot use that build on your processor, otherwise wait until the test completes and check the line "Total time (ms): <number". Lower is better.

Jhoravi
Posts: 247
Joined: Wed May 08, 2013 4:49 am

Re: which stockfish build to use

Post by Jhoravi » Thu Jul 11, 2019 1:05 pm

h1a8 wrote:
Thu May 16, 2019 4:34 am
I have an i5-8250u processor. What will be the best (fastest and strongest) build?
x64 bmi, x64 popcnt, or regular x64?
Hi, I'm planing to buy a laptop with that exact CPU (i5-8250u). How many nps is Stockfish BMI2 using 4 cores in the starting position?
I'm also eyeing for the i7 variant (i7-8550u) where the notable difference is the bigger L3 cache of 8MB instead of 6MB. If that 25% L3 cache increase has no significance for Stockfish then I can save few bucks by choosing the i5.

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