Bartek Kochan wrote: > I have just tried this on my PS3 but during the running of the > MacLucasFFTW program, `spu-top` or `ls /spu` doesn't show any > activity. > PPU on the other hand is 100% busy. Are we really using the SPUs here ? > > I use Fedora Core 7 , Cell SDK 3.1, gcc 4.1.2, fftw 3.2.2, kernel 2.6.28 > my times on that: > > real 8m33.052s > user 8m30.421s > sys 0m2.562s > > bit quicker but maybe cos I it was the only process running and Your > PPU was doing sth else as well > Not bad for early results. Nice to see someone making some progress on this. Still got a ways to go tho to make it nice and fast it seems. (GWs mprime on my Intel Q9450 (4 CPUs) does that exponent in under 3 minutes. Old lucdwt C code with 16k fft instead of 12k on a single CPU is a bit over 10 mins).
Of course it doesn't really have to be faster than the new Intel CPUs it could still be used to add some compute power to GIMPS. _______________________________________________ Prime mailing list [email protected] http://hogranch.com/mailman/listinfo/prime
