On Sat, Jan 14, 2012 at 3:14 PM, Dr David Kirkby <[email protected]> wrote: > > > On Jan 10, 4:04 am, William Stein <[email protected]> wrote: >> On Mon, Jan 9, 2012 at 7:12 PM, Dr. David Kirkby >> >> <[email protected]> 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. -- William -- William Stein Professor of Mathematics University of Washington http://wstein.org -- To post to this group, send an email to [email protected] To unsubscribe from this group, send an email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
