[QUOTE=science_man_88;289277]can't divisions be affectively done via other things ?[/QUOTE]
Yes, but that's pricey (unless the divisor is constant in which case you can replace the div with mul and a small number of low-cost operations): it can be done the way you do it by hand, working in base 2 instead of base 10.

[QUOTE=ldesnogu;289279]Yes, but that's pricey (unless the divisor is constant in which case you can replace the div with mul and a small number of low-cost operations): it can be done the way you do it by hand, working in base 2 instead of base 10.[/QUOTE]

Fortunately for sieving, division is not in the critical path. When it is necessary, as you say, it can be replaced by multiplication by stored inverses of primes modulo carefully chosen powers of 2.

[QUOTE=xilman;289150]Strangely enough I was looking at their web page a couple of days ago, though for entirely different reasons.

There product may be very interesting indeed but until relatively easy access to a working system is available it's hard to make any significant comment.[/QUOTE]
[URL="http://www.tomshardware.com/news/Tilera-100-core-CPU-200-cores-Serve-processors-Multi-core-CPUs,14543.html"]Expected to ship later this year. According to Tom's Hardware.[/URL]

200 cores next year.

[QUOTE=fivemack;289262]So you can get one 700MHz ALU from Raspberry Pi for $25 and 2.5 watts, or 1792 800MHz ALUs from AMD for $500 and 250 watts, and the software hasn't been ported to either.

Tilera are packet-processing machines, as far as I can see their role is to have a lot of network interface onto the chip and to be easier to program than an FPGA of similar cost. xilman may well have a more perceptive opinion.[/QUOTE]


[URL="http://ca.finance.yahoo.com/news/35-raspberry-pi-computer-sells-175320248.html"]$35 Raspberry Pi computer sells out on launch[/URL]

[QUOTE]Almost immediately, the Raspberry Pi Foundation, the non-profit group that designed the computers as a device that young people could learn how to program, was flooded with complaints from customers who couldn't access the distributor websites to place their orders.[/QUOTE]