Message boards :
Number crunching :
Seti farms: Hobby or obsession?
Message board moderation
Previous · 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · Next
| Author | Message |
|---|---|
|
DJStarfox Send message Joined: 23 May 01 Posts: 1066 Credit: 1,226,053 RAC: 2
|
The only other thought I have had was to transfer the farm from my living room into the cooler basement....but I have doubts that the heat sinking abilities of the concrete basement walls could keep things cool down there... Wireless KVM? No. VNC? Yes. :) |
kittyman ![]() Send message Joined: 9 Jul 00 Posts: 51580 Credit: 1,018,363,574 RAC: 1,004
|
The only other thought I have had was to transfer the farm from my living room into the cooler basement....but I have doubts that the heat sinking abilities of the concrete basement walls could keep things cool down there... I am sure there is more than one way to do it.......but a reboot in the case of a crash would still require me to pry my butt off of the couch and go downstairs to hit the buttons....... May not seem like much to you, but when all your rigs are OC'd as far as mine are, reboots are required a bit more often that usual....actually, the farm has been pretty stable as of late......maybe I'm not pushing things far enough...LOL. "Time is simply the mechanism that keeps everything from happening all at once."
|
|
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0
|
Okay, VNC and a hardware watchdog card. A program "pets the watchdog" and if it doesn't get petted often enough, the watchdog card hits the reset button. PM me if you can't find a wide selection through google. |
kittyman ![]() Send message Joined: 9 Jul 00 Posts: 51580 Credit: 1,018,363,574 RAC: 1,004
|
But if the rig crashes and the cpu quits, would the watchdog card keep running? And you would have to hardwire it into the reset button switch? And now that I think about it further, I have had rigs crash many times where the cpu stopped responding and the only way to reset the rig was to power off and back on.........because the reset button on the case would not reboot it..... "Time is simply the mechanism that keeps everything from happening all at once."
|
Daniel Send message Joined: 21 May 07 Posts: 562 Credit: 437,494 RAC: 0
|
Update on the quad... Installed the new video card today and it booted right up faster than the onboard video and better looking too. XFX even has xp64 drivers available! Daniel |
kittyman ![]() Send message Joined: 9 Jul 00 Posts: 51580 Credit: 1,018,363,574 RAC: 1,004
|
Update on the quad... Oh yah......onboard vid sux........good luck with your new card....... "Time is simply the mechanism that keeps everything from happening all at once."
|
Daniel Send message Joined: 21 May 07 Posts: 562 Credit: 437,494 RAC: 0
|
|
|
Seahawk Send message Joined: 8 Jan 08 Posts: 937 Credit: 8,157,029 RAC: 5
|
I found an old ATI 1950XT Pro in the junk pile to put in the quaddie. I think Betsy can live with it. Still on list to get: 2x sata HDs sata DVDR/W 4gig mem Win XP Pro 64bit The rac is starting to climb now. I will let system run awhile and see how it settles out before I start doing tweaks. I used to be a cruncher like you, then I took an arrow to the knee. |
|
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0
|
The watchdog cards are not processor dependent. They have a timer and some logic and run independently. They only use the bus so the system can "pet the dog." They can power down and power back up if needed. ... at least this one can. This way you don't even have to leave your armchair, just wait out the timer. |
kittyman ![]() Send message Joined: 9 Jul 00 Posts: 51580 Credit: 1,018,363,574 RAC: 1,004
|
Oh criminy......why, oh why did you have to turn me on to that card????? The perfect answer to my occasional phased quaddy lockups when I am not at home to hit the buttons.....another $209.00 from the Seti Forever fund......(whimpers). "Time is simply the mechanism that keeps everything from happening all at once."
|
|
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0
|
I have one of these, on one machine here. I want that machine running. It, in turn, checks all the others. The other machines are plugged in to X-10 appliance modules with a suitable X-10 controller on the "watchdogged" machine. Nez (from another thread) probably has some kind of watchdog system so that he doesn't have to watch over the various boxes he has. |
Blurf Send message Joined: 2 Sep 06 Posts: 8964 Credit: 12,678,685 RAC: 0
|
To emphasize my obsession, I'm considering dumping my Hot Water Tank for a Tankless Water Heater and getting an EdenPURE heater to try and cut our electric costs... Anyone have experience with these??? |
Carlos Send message Joined: 9 Jun 99 Posts: 31695 Credit: 57,275,487 RAC: 157
|
To emphasize my obsession, I'm considering dumping my Hot Water Tank for a Tankless Water Heater and getting an EdenPURE heater to try and cut our electric costs... I am a home builder by profession. I have installed hundreds but not the EdenPURE unit. All of my installs, except for a few in commercial buildings have been gas units built by Bosch or Takagi. I have a Bosch in my own home and I love it. You never run out of hot water and my gas bill did go down about 20% This is a little off topic isn't it?
|
|
ChrisD Send message Joined: 25 Sep 99 Posts: 158 Credit: 2,496,342 RAC: 0
|
To emphasize my obsession, I'm considering dumping my Hot Water Tank for a Tankless Water Heater and getting an EdenPURE heater to try and cut our electric costs... At first, a gas hot water heater will always be cheaper than a storage tank system, but consider carefully before buying. If You live in an environment relatively free of obstructions and not too far north, a solar powered water heater system with supplemental electrical heating in overcast periods, IS the cheapest way of getting Your hot water. Even at 57 degrees north lattitude (Gistrup Denmark, 57N 10E), I have free hot water from March 20 until Primo September using 6.6 sqare metres of water solar absorbers. I am using a hot water storage tank with a cpacity of 200 litres, it is equipped with 2 spirals, the lower is used for the solar power and the upper for my boiler to supply the hot water during the 6 months winter we have here. These tanks can also be equipped with an electical heater unit, in case You have no boiler. House heating: Consider very carefully before buying this EdnePUREHeater. Of course it purifies Your Home air, but heating is done with conventional quarts heaters, which gives 1 KWh of heat for 1 KWh of electrical power supplied. Go for an 'Air to Air converter'. Just look up this on the net. Panasonic and a lot of other companies sell these units that is just an air conditioner used for heating/cooling, but most of these units have a COP Value of at least 3.65 which means that You get 3.65 KWh of Heat for 1 KWh of power supplied. This is hands down the cheapest way of heating Your home, unless You have rural distributed heating based on burning garbage or bio mass or utilizing cooling water from a large electricity plant. An Air to Air converter is cheaper than an oil burner, even cheaper than a woodstove (unless You own Your own forest, that is :)). Need proof, just PM me and I will provide You with the details. Sorry Folks, this is a little out of topic, please forgive me. ChrisD |
|
archae86 Send message Joined: 31 Aug 99 Posts: 909 Credit: 1,582,816 RAC: 0
|
I think you are referring to the category of device which has been usually called a "heat pump" in the USA. They are wonderfully efficient for heating at a moderate outdoor temperatures. |
kittyman ![]() Send message Joined: 9 Jul 00 Posts: 51580 Credit: 1,018,363,574 RAC: 1,004
|
LOL..I have 8 heat pumps crunching Seti.......they just pump heat into the air..... "Time is simply the mechanism that keeps everything from happening all at once."
|
AndyW ![]() Send message Joined: 23 Oct 02 Posts: 5862 Credit: 10,957,677 RAC: 18
|
Well well well! I thought I had it bad! Before I moved house I had 4 Shuttles all dedicated to running SETI - my own SETI farm as it were. I had a 5th Shuttle which was running a SETI Work Unit server (back in the classic SETI days) and a 6th Shuttle which was my PC and running SETI in the background. My electricity bills were reasonable at about £65 a month ($140) but electricity around here has gone up nearly 100% since then! I am back on the SETI scene and will be setting up at least 2 dedicated PIV 2.4Ghz machines (being given to me for free!) later this week and have my eye on a couple of 3.2Ghz PIV machines for the right price too. I don't know how bad the electric bills are going to be, but my plan is to put them in my conservatory which is heated by a small gas wall heater 24/7 at the moment, so chances are the heater can go off, offsetting the cost of the electricity slightly. It's easy to get sucked in isn't it?! |
|
DJStarfox Send message Joined: 23 May 01 Posts: 1066 Credit: 1,226,053 RAC: 2
|
I have one of these, on one machine here. I want that machine running. Ned, I have a watchdog timer in my motherboard's BIOS. I assume this can do the same thing? It has a featured called "watchdog timer". Is this the timeout value before rebooting the machine you were talking about? Do you think a BIOS implementation would work? |
|
1mp0£173 Send message Joined: 3 Apr 99 Posts: 8423 Credit: 356,897 RAC: 0
|
I have one of these, on one machine here. I want that machine running. Good Question.... I'm not sure how a true BIOS implementation would work. I know that several common chipsets have watchdog functions, it wouldn't take that much silicon on the typical northbridge or southbridge. Normally, there is something high-level that "pets the dog" periodically, and one should not assume that the system will handle this itself (i.e. that it'll access disk, etc.) but hey, you can always try it. I have two industrial motherboards with watchdogs on the motherboard. They both need to be "petted." -- Ned |
|
Abinu Send message Joined: 26 May 01 Posts: 12 Credit: 159,840 RAC: 0
|
I guess that i am rather on the obsessive side (some even say nuts): P3-650 dualie, P3-750 dualie, Athlon MP2400 dualie and P3-700 Xeon hex-server allow me to keep the heating down, but don't ask my about the bill for electricity ... And in the basement another P3-900 Xeon octo-server is waiting for 3 missing cpus and a special power cable to go crunching. I also want to make a test how low the hardware can be to still run a SETI-WU. In preparation i have an AMD 5x86-133 with 256 mb ram, EISA graphics and EISA SCSI controller. Of course, this is for experiment only. |
©2025 University of California
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.