Re: Timing and Pi
- To: mathgroup at smc.vnet.net
- Subject: [mg84314] Re: Timing and Pi
- From: David Bailey <dave at Remove_Thisdbailey.co.uk>
- Date: Wed, 19 Dec 2007 04:07:56 -0500 (EST)
- References: <fk88qk$501$1@smc.vnet.net>
peter wrote: > i wish to see other people results in running the code: > Timing[N[Pi,1000000]] > i am using mathematica 6 ,windowsXp > i have tried the code on two machines: > 1- celeron 2.6GHZ-256kb cash, memory DDR-512MB-400Mhz > the timing result is 4.281 seconds > 2- pentium D-925 dual processor 3GHZ-4MB cash , memory DDR2-2GB-667Mhz > the timing is 3.218 seconds > i am astonished that there is not much difference between the two values, even the second machine are speedier in cpu frequency and have more cash and the memory frequency. > thanks for all > peter Don't forget that the Pi calculation will not use the second processor, and may not reference a lot of memory while it is doing the actual calculation - so the extra cache may not contribute too much either! David Bailey http://www.dbaileyconsultancy.co.uk