On Sunday, 15 January 2012 14:26:18 UTC+8, William wrote: > > On Sat, Jan 14, 2012 at 3:14 PM, Dr David Kirkby <drki...@gmail.com> > wrote: > > > > > > On Jan 10, 4:04 am, William Stein <wst...@gmail.com> wrote: > >> On Mon, Jan 9, 2012 at 7:12 PM, Dr. David Kirkby > >> > >> <david....@onetel.net> wrote: > >> > I'm not sure if this idea will go down well, but I'll mute it anyway. > >> > >> > I know William has switched off machines (t2.math for example), as he > does > >> > not have the power/cooling for them. That seems a real shame for that > >> > machine to sit and collect dust, when it could be used. > >> > >> I have the power now. The only machine that is off is t2.math. No > >> other machine is off. That was a temporary measure in light of a > >> *major* electrical issue that arose in the UW math server room, which > >> was beyond my control. If anybody will volunteer to maintain > >> t2.math at a software level, I'm happy to turn it on and give that > >> person root. > > > > I'll do my best in the limited time I have available if you switch it > > back on. > > > >> > So would William consider paying the electric costs for those that > make > >> > servers available, and are not covered by their institution? Would it > be a > >> > waste of money, or good use of money? > > > >> How much exactly would the electrical costs be? > > > > I have two decent servers decent (both IBM) but want to move CPU from > > the 1U unit to the 2U unit, as the 1U unit has faster processors. But > > I've had to order the necessary heatsink and VRM to make the change. I > > will have a machine with a pair of quad core 3.16 GHz Xeons (8 cores > > in total) and a significant amount of RAM - perhaps as much as 48 GB. > > > > Once I get set up, I'll measure the power consumption. Obviously it's > > impossible to give an exact figure for electric costs. > > > > But I was more thinking of the general principle that if you want more > > buildbots, then at the end of the day someone has to pay for them. > > Electricity cost is a significant cost of the ownership of servers. > > I think the electrical bill for the house I own is about $20/month > total. Thus I view electricity as being fairly cheap, at least, > compared to water and gas. I don't know what your rates are where > you live, etc., but I might be surprised if running a few computers > costs substantially more than my entire house. > in UK electricity is more expensive than in WA, it's about as expensive as in California, or perhaps a bit more (but then a part of a cost is a fixed charge for the pleasure of being connected to the grid)...
> -- William > > -- > William Stein > Professor of Mathematics > University of Washington > http://wstein.org > > -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
