Posts by ivan

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21) Message boards : Number crunching : Problems with 10.25.2014 (Message 1591862)
Posted 25 Oct 2014 by Profile ivan
Couple of weeks ago my Uni account started blocking several threads here on account of some metric or other. Curiously, most were threads started by Merle...
22) Message boards : Number crunching : intel i7 4790K and intel's warranty (Message 1591298)
Posted 24 Oct 2014 by Profile ivan
How long did you go with the stock cooler and how long before it was hitting such high temps? Thanks

Heh, not much longer than it took me to get eBuyer to deliver an after-market cooler. :-) I don't recall exactly how long it took to start bouncing off the rev-limiter when I fired up S@H, but I believe it was measured in seconds rather than minutes...
23) Message boards : Number crunching : intel i7 4790K and intel's warranty (Message 1590903)
Posted 23 Oct 2014 by Profile ivan
I suppose the best thing for me to do would be to put in cooler master and then if it is too loud I could go back to the intel heatsink/fan.

Question: Until then, what do I watch out for re. damage to MB or other components other than just watch temps for cpu & gpu cores? If anything?

Coming late to the party... Last year I installed a 4770K with the stock cooler. Under Mint Linux running 8x S@H MB jobs, it would hit 100 C and then throttle back to 3.5 GHz. I installed an aftermarket cooler and it then ran at full 3.9 GHz and is currently running core temperatures of 75-80 C. It's been doing that for nearly a year now.
So just keep an eye on the temperatures (and clock speed if you have a programme to monitor that).
24) Message boards : Number crunching : Panic Mode On (91) Server Problems? (Message 1590111)
Posted 22 Oct 2014 by Profile ivan
Summats up:-)

22/10/2014 11:19:36 | SETI@home | Scheduler request completed: got 107 new tasks

Got a fair stack of work including 3 APv7's

Swings & Roundabouts I guess.

Yeah, one of my new 20-core machines ran out and the other was on its last WU when the first got 98 new tasks and the second got 38.
22-Oct-2014 10:55:30 [SETI@home] Scheduler request completed: got 98 new tasks 22-Oct-2014 11:33:59 [SETI@home] Scheduler request completed: got 38 new tasks
25) Message boards : Number crunching : how many ways to fry a motherboard? (Message 1588558)
Posted 18 Oct 2014 by Profile ivan
Good to know. Thanks

The word we use in the states is usually Q-tip but I think we have other names for it too.

"Cotton bud" most places I've been.
As for spreading heat-sink compound, I keep all my old credit/debit cards and similar and use them to carefully smear the compound all across the surface of the CPU/GPU housing. (They are also handy in breaking apart pressed-together casings on all-in-one PCs, tablets, tc.)
26) Message boards : Number crunching : New PSU blows my mind. (Message 1588231)
Posted 17 Oct 2014 by Profile ivan
Ok, so now I have connected the 24 pin connector to the MB.

Next I know I need to connect an 8 pin ATX12V1 to the MB.

I have 2 cables that have 8 pin connections on each end - they have the label "CPU"

I think I have to connect one of these to that ATX12V1 on the MB


and probably to the "6+2 PCIE & 4+4 CPU" group.

If you mean that as sockets on the power supply, yes. That "group" would be to supply extra 12 V to the ATX input and directly to PCIE GPUs, etc (some have 6-pin inputs, some have 8-pin).
[Edit] Ah, yes, found a picture on eBuyer. Definitely connect to that group. In fact, you can hardly go wrong -- if it's 8-pin it goes there, if it's 6-pin it goes in the peripheral group. Ignore the CLINK unless you have a second P/S... [/Edit]

I know of course that I first have to install the cpu and heatsink/fan but as far as the PSU set up is that all I need to start. That is the 24 pin and 8 pin connection? The 16GB of memory is already set up on the MB too.

I also need to confirm that I am setting up that 8 pin correctly.

That should be enough to get a bios display, assuming you have an on-board VGA/video output.
27) Message boards : Number crunching : Panic Mode On (90) Server Problems? (Message 1585052)
Posted 11 Oct 2014 by Profile ivan

Patience, Julie. I'm just now starting to see an uptick in my home machine and overall RAC. Perhaps the APv7 results are starting to have an effect. Or maybe it's just a statistical blip...
28) Message boards : Number crunching : AP V7 (Message 1584287)
Posted 10 Oct 2014 by Profile ivan
First one is complete, just awaiting my wingman.

I've had two complete and pending (3,900 secs each/400 secs CPU) and seven in progress on my "stock" Linux box.
29) Message boards : Number crunching : Mismatch in time elapsed values? (Message 1582727)
Posted 6 Oct 2014 by Profile ivan
I'm think to have that you must have Hypo Threading turned on . If you wish to speed things up Go into your BIOS and turn it off . That's not good running Seti . Or having it on with just a P4 .

OTOH, many users have reported a 25% or so productivity increase when using Intel Hyperthreading. That is, individual tasks take less than twice as long when running two per physical core.

It probably depends on various factors related to cache size, cache speed, main memory speed, etc. and the sensible way to determine whether to have it on or not is to actually see which way works best on the system. IOW, try each for long enough to see how many tasks get done per day.

Well, I've been running two identical machines 7371751 and 7371070 for more than a month now. Admittedly the one using hyperthreading has been crunching for one day longer than the other, but it has a 14-15% advantage over the non-HT machine in both total credit and RAC. Unfortunately the non-HT machine will have to be shut off tomorrow while an engineer investigates a small anomaly in its RAID controller, so it will slip behind a bit more. When we start using the HT machine in earnest, I'll have to turn off HT as we will then want the fastest individual processes, not the highest throughput.
30) Message boards : Number crunching : Panic Mode On (90) Server Problems? (Message 1581647)
Posted 3 Oct 2014 by Profile ivan
While my previous Front Page Mac is now in Full Free Fall;
AP Validation pending (491) · Valid (30)

All AstroPulse v6 tasks for computer 7042852
State: All (277) · In progress (90) · Validation pending (179) · Validation inconclusive (2) · Valid (6) · Invalid (0) · Error (0)
31) Message boards : Number crunching : Panic Mode On (90) Server Problems? (Message 1581398)
Posted 3 Oct 2014 by Profile ivan
They fixed the validator.


Sorry, Julie, but from where I sit it failed again after about 30 minutes. Waiting for validation rising again.

It looks like it hasn't completely gone OTL. Over the past hour my AP valid have gone from 130 to 147. That trickle could stop at any time I expect.

Yes, with more data this morning the slope of the graph is lower, so it may be still processing but at a lower rate than results are returned.
32) Message boards : Number crunching : Panic Mode On (90) Server Problems? (Message 1581231)
Posted 2 Oct 2014 by Profile ivan
They fixed the validator.


Sorry, Julie, but from where I sit it failed again after about 30 minutes. Waiting for validation rising again.
33) Message boards : Number crunching : Panic Mode On (90) Server Problems? (Message 1580980)
Posted 2 Oct 2014 by Profile ivan
Validators servers are back up and working but 293,358 now aproxx 2,000 more than 1:20 hrs ago so all not well in SETIland still no wonder i only got 7,000 so far should be 20,000 oh well time for bed then

The apparent only AP validator ap validate 4 has said running since yesterday, but the column on the left displaying the status is known to lie.

The Astropulse "awaiting validation" graphs still show a nearly-constant rate of increase, with no sign of anything reducing the pool.
34) Message boards : Number crunching : Panic Mode On (89) Server Problems? (Message 1576698)
Posted 23 Sep 2014 by Profile ivan
Could anyone with a heavily-active CPU check if they're getting an unusual number of VLARs, please? That's the only explanation I haven't felt sufficiently motivated to test.....

Quick check has 3 out of the last 20 -- over all machines -- as VLARs. That encompasses 20:11:55 UTC to 22:29:55 UTC.
35) Message boards : Number crunching : Power bill challenge (Message 1576691)
Posted 23 Sep 2014 by Profile ivan
I just used RAC for SETI (144,115,652) and divided down by my own machine's RAC which runs at probably around 500 W. Then used local energy costs and converted to USD.
I think the figure gives an indication of the massive effort and commitment people make and must feel about this project.

Well, to take one (hopefully average today) machine... My GTX 750 Ti at work tops out around 20k RAC when conditions are good. It uses less than 75 W for the GPU and ~90 W for the CPU. So say 160 W total or 1/6 kWh/h -> 4 kWh/day at a local (domestic) price of £GB0.14/kWh -> £GB0.56/day -> £GB16.8/mo. Multiplied by 7206 from your RAC figure above -> £GB121k/mo -- which is getting on for £GB1.5M/year!
36) Message boards : Number crunching : Panic Mode On (89) Server Problems? (Message 1576658)
Posted 23 Sep 2014 by Profile ivan
Forums seem a bit slow since we came back, but I think that's normal for right after the outrage, isn't it?

I'm having a lot of trouble reading my stats and communicating results/getting new work. I saw oscar (BOINC master database) was shown as down for a while but he's green again now; still getting time-outs when reporting, though.
37) Message boards : Number crunching : Max temp for getting the normal life out of a video card? (Message 1576626)
Posted 23 Sep 2014 by Profile ivan
Slightly happier bunny tonight -- I received a parcel from China today for my birthday present, a new fan for my Gigabyte GT 640 DDR5 card which was/is my secondary GPU in my home PC. It cost all of £GB1.78 with free posting! Re-assembled the card at lunchtime and replaced it tonight. It's now purring along on two AP tasks, with a temperature of 72 C at 80% fan according to nvidia-smi; the main Asus GTX 660 Ti is using 27% fan at 63 C (the 640 is in a single-width end slot with only 5 or 6 mm clearance between the fan and the bottom of the case).
When the original fan failed, the 640 would gradually rise to 102 C before shutting down...
38) Message boards : Number crunching : Computer Upgrades - normal or not? (Message 1571166)
Posted 12 Sep 2014 by Profile ivan
Thanks, actually I am having an issue with installing NVidia drivers in Linux.
I had no problems with the 210 card but the 'new' (eBay) 8800GTS is giving me problems. I'm a Win XP 'refugee' so need to 'have my hand held' with Linux (Mint 16 Petra)I've tried manual install through terminal but nothing has worked so far
Couple of people on Mint forum are helping out, posting scripts I can just cut and paste into terminal

a) Using Firefox/Chrome, go to, find their driver download area and download the latest qualified driver for your flavour (32/64-bit) Unix.
b) Make sure your system is up-to-date - sudo apt-get update; sudo apt-get upgrade.
c) reboot -- sudo reboot
d) If b) loaded new kernels, you may find error messages. Select the option to drop into a command-line terminal, or if (limited) graphics go there with Ctrl-Alt-F[1|2] (probably 2)
e) sudo telinit 2
f) sudo service stop mdm; sudo pkill -9 X -- (to be sure, to be sure)
g) cd to where you downloaded (insert proper filename here et seq.)
h) sudo chmod +x
i) sudo ./ -- in general take default options
j) sudo reboot
k) report problems here in case my memory's faulty!
39) Message boards : Number crunching : NVIDIA Jetson TK1 (Message 1567807)
Posted 5 Sep 2014 by Profile ivan
GT 640 which had developed a faulty fan -- the third Gigabyte GPU that's done that to me now! :-( )..
Just ordered a replacement fan from China on eBay for about £1.50, so might be back in action by the end of the month. Otherwise I'll get the Asus GT640-1GD5-L as a replacement -- it has to fit in a single-width slot with only about 5 mm extra clearance.
40) Message boards : Number crunching : NVIDIA Jetson TK1 (Message 1567691)
Posted 5 Sep 2014 by Profile ivan
Any patches or recommendations for X-branch ? It's on idle while I address some complex Boinc issues, but I don't stop taking issues for the ToDo list :)

No, IIRC it just compiled as usual on the Jetson.
No real problems with the s@h, just the missing include I reported last January, and I had to edit the config file to remove the old compute capabilities that nvcc didn't like and put in 3.2 for the Tegra.
I had to add
#include <unistd.h>
to client/analyzeFuncs.h to bring in sleep() on my Mint system.

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