Posts by HAL9000


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21) Message boards : Number crunching : Different setting for different GPUs? (Message 1572717)
Posted 5 days ago by Profile HAL9000
What about using the <coproc> inside of the app_config file. I was looking at that and trying to figure out if I could add that into the app_config and tell it if GPU 0 or GPU 1 then run this many, if GPU 2 or GPU 3 then run this.. I'm not sure how to fix it into the app_config. What I was thinking was along these lines.

<app_config>
<app>
<name>astropulse_v6</name>
<coproc>
<type>GTX 780</type>
<count>2</count>
<device_nums>0 1</device_nums>
<gpu_versions>
<gpu_usage>0.5</gpu_usage>
<cpu_usage>1</cpu_usage>
</gpu_version>
</coproc>
<coproc>
<type>GTX 750</type>
<count>2</count>
<device_nums>2 3</device_nums>
<gpu_versions>
<gpu_usage>1</gpu_usage>
<cpu_usage>1</cpu_usage>
</gpu_version>
</coproc>
</app>
</app_config>


Ok, I don't do code so I don't even know if what the above looks like is even remotely possible but that is why I am asking. Last thing I want to do is put this in the computer and have it go berzerk. Thoughts and Ideas?

You can add whatever you like to the app_config.xml. However since there is no code to read your made up values they will be ignored. With <coproc> declared twice I imagine the last one will take effect.

In another post Raistmer was mentioning it would be nice if we had a per GPU config and I made this suggestion. Perhaps one of the Lunatics forwarded it or a better idea to the BOINC devs.
22) Message boards : Number crunching : various gpu card manufacturers (Message 1572708)
Posted 5 days ago by Profile HAL9000
I see now that the various card manufacturer's of video cards, Sapphire, MSI, XFX, etc. show different ratings for gpu core clock speed and single precision GFLOPS. I haven't found a source where you can compare one mfg. to another. Does anyone know if there is one and where to find it?


Do you mean like this?

http://www.tomshardware.com/reviews/gaming-graphics-card-review,3107-7.html

I think they are looking for a roundup comparison along the lines of: 10 Radeon R9 270 And 270X Boards, Reviewed. Unfortunately not a lot of review sites do very many of these kinds of comparisons.
I think mostly the manufactures don't want to show that when you pay an extra $80 for that slightly overclocked card you are only getting 0.021% more performance.
23) Message boards : Number crunching : Different setting for different GPUs? (Message 1572698)
Posted 5 days ago by Profile HAL9000
The easy way to do that is start 2 instances of Boinc on the same host, each one optimized for one of the GPU´s.

I don't think anyone except you calls that 'easy' :P - though I don't doubt it's effective, but with side-effects.

It is pretty easy to setup, but BOINC can be rather temperamental in that situation. I had a few issues the last time I was doing that with BOINC 7.0.64.
-Sometimes an instance would generate a new CPID
-Tasks run on one instance would be reported as valid on the other running instance.
-One instance would just stop running tasks with no log as to why. To get it running again all BOINC instances would have to be stopped and then started.
I figured I might try it again with a newer version at some point.
24) Message boards : Number crunching : blanked AP - faster or slower (Message 1572443)
Posted 6 days ago by Profile HAL9000
I'm not sure you could actually force BOINC to only run highly blanked tasks on one of two GPUs. Well not without constantly micromanaging the system task by task.
Any efficiency gains would probably be lost in the constant stopping and starting of tasks to try and move them around.
25) Message boards : Number crunching : crossfire or sli? (Message 1572441)
Posted 6 days ago by Profile HAL9000
Those features are used to make your collection of GPUs work as one for rendering purposes. Where the slight lag between the devices talking to one another isn't very noticeable.
In the case of BOINC & SETI@home you are preforming a separate function on each GPU. Having a single task processed across several GPUs may cause a massive slow down in processing while data moves across the PCIe. Instead of internally on the GPU.

In the past I think you actually needed to disable those features in order for BOINC to use all of the GPUs. However with newer drivers I think it no longer matters.
26) Message boards : Number crunching : I have one screw missing! (Message 1572200)
Posted 6 days ago by Profile HAL9000
OP: every single screw attaching the board to the mounting points is not 100% mandatory. Yes, you should use them all, but you don't have to. The ones around the edges are the most important, so just take one from the middle somewhere and move it to the missing one on the edge.

Sometimes not all of the stand-offs are for screws & there could be some that a guide posts.
I had forgotten about them until I was swapping out an older microATX with a mini-ITX the other night. I put the board in & looked to make sure I had 2 of the 4 holes lined up. I loosely put in 2 screw & then started to make sure the rest were lined up. I got to the post & my brain just stopped for a moment. Saying "one of these things is not like the other".
27) Message boards : Number crunching : new computer build (Message 1572193)
Posted 6 days ago by Profile HAL9000
It's been a while since I did this (mainly in the Windows 2000 and XP days), but my understanding then was that the Dell-branded re-installation CDs contained a BIOS check program. If the CD was run, and found a Dell BIOS, then the combination was automatically licensed and didn't need to go down the product key/activation route.

I still run a Dell Precision workstation which was supplied with Dell OEM XP pre-installed. I upgraded it to Vista using a Dell-supplied upgrade DVD (the hardware was already Vista-certified before I bought it - just that the OS hadn't been officially released), and I upgraded it again to Windows 7 using a Technet evaluation DVD and Technet-supplied product key. It's still running with the applications I first installed in 2006.

So it can be done, but there are so many possible permutations it's hard to predict how it will turn out in any particular case, with any particular combination of OS versions.

(My workstation went from XP Pro --> Vista Business --> 7 Ultimate. Remember that with Vista and 7, you can't mix Home and Business/Pro versions)

I have not had that happen on any systems I worked with. Perhaps it is another one of those differences in configuration between the US and UK division? As we have seen in the past with drivers supplied with their systems and such.
Perhaps it could have been retrieving the activation information from the Dell utilities partition? That is something I have always done away with when redoing a machine.
28) Message boards : Number crunching : new computer build (Message 1572109)
Posted 6 days ago by Profile HAL9000
Dell puts the Microsoft OS key on the outside of the case

But that means anyone that have physical access to the computer can steal the OS key? (e.g. by making photo)

Having someones key that has been activated doesn't do you a lot of good. If you try to use an already activated key on another system. You get prompted to call MS and provide more information before activation occurs. Last time I did that it was automated, but it took ages to punch in everything on the phone keypad.
29) Message boards : Number crunching : new computer build (Message 1572006)
Posted 7 days ago by Profile HAL9000
If I am reading you correctly, I would have to go thru dell and their support $. I really don't want to go that route. My last computer I built myself, which I really didn't think I could do without a failure. I wouldn't want to get in another tie-in with a hardware mfg. if I can avoid it.

Dell puts the Microsoft OS key on the outside of the case. As per Microsoft's policy for OEMs to do so.
30) Message boards : Number crunching : Computer Upgrades - normal or not? (Message 1571907)
Posted 7 days ago by Profile HAL9000
Wish I had the opportunity to harvest my old dead computers video card. It uses AGP tech. LOL.

There are some AGP cards that can be used for crunching. As far as I remember only ATI HD2xxx or later generation cards. Most of those cards could only do Astropulse work with the "hybrid" app. Which I think was said is no longer being developed. So forthcoming AP v7 will not be able to run on them. There are a few HD4xxx AGP cards that I think can use OpenCL, but the CPU has to support the right level SSE IIRC.
31) Message boards : Number crunching : I have one screw missing! (Message 1571906)
Posted 7 days ago by Profile HAL9000
Can you remove one of the other screws and take it down to your local computer store, radio shack or lowes or Home Depot and see if they have something similar? One of my builds I didn't have enough screws so I just went down to Altex and asked them if they had some. I now have a box here that I keep all the extras screws that come in the boxes in case I need one.

I use old prescription medicine bottles to store various things like screws, stand offs, jumpers, diodes, & various other electrical parts. I even put labels on some of them. It is sort of like using old jelly jars for screws in a wood shop I suppose.
32) Message boards : Number crunching : I have one screw missing! (Message 1571903)
Posted 7 days ago by Profile HAL9000
My ASRock x58 extreme has one screw missing, I just discovered. It is the one at the top left of the mobo. It worried me so I contacted ASRock and they said they had no more available. My question is are the mobo screws interchangeable, that is, of a standard size and where might I get one?

Worried about a vibrating death I am.

I think most of us have a few loose screws... oh you mean real ones... :P

If you are talking about the screws that hold the motherboard to the chassis those are pretty common screws in various computer uses. It will be either an M3x5, or M3x6. If you have screws holding down the slot covers to the chassis they could work & you could just steal one from there.
You could also move a screw from a more secure location to there. There should be on in about the middle of the MB near the back of the system. Probably under where the video card is located. You could move that one to the top. As that portion of the MB is less prone to vibration with a video card holding it down.
If the screw was there before and came out it might b e rolling around in the chassis somewhere, or on the MB itself. Which could short something out. With the system off rolling around or shaking the chassis may reveal it.

If you don't have any extra screws from anything you can purchase a small kit of screws.
http://www.newegg.com/Product/Product.aspx?Item=9SIA5H61T29345&cm_re=motherboard_screw_kit-_-9SIA5H61T29345-_-Product
http://www.amazon.com/Link-Depot-Accessory-Computer-Screws/dp/B0017S5D5G/ref=sr_1_8?ie=UTF8&qid=1410708622&sr=8-8&keywords=motherboard+screw+kit

Alternatively if you see an old PC being thrown away you could grab it. Then gut it for extra screws, standoffs, & fans.
33) Message boards : Number crunching : Son went off to school, time to get his rig crunching (Message 1571688)
Posted 8 days ago by Profile HAL9000
I never found any advantage to running 2 instances of either on my HD6870.
34) Message boards : Number crunching : The current top cruncher (Message 1571567)
Posted 8 days ago by Profile HAL9000
I really hope these computers are HIS to play with as HE wants, and do not belong to either his employer or client(s) and are in a site where he is responsible for paying the energy bills. I would be more than a little pee'd if I were to find he was using hardware I was renting in a co-location site somewhere. And if I were the owner of a co-location site and found he was hammering my energy bill I'd be after him. I do hope he is above board in all respects and we don't have a repeat of the "Nez Event", but on a bigger scale...

If the few posts they made. They stated they saw using BOINC as a positive way to load test the data center(s).

Normally a co-location facility hosts your computer hardware. While supplying the other services such as power and network connectivity. Data center would host the software/services you need. The company that I use for my web hosting does both, but they are in different locations.
So I wouldn't be worried about a data center loading up the active host boxes with BOINC & reducing their performance.

I wouldn't imagine that anyone would miss a large increase in the power usage from unauthorized use in a data center. I only have 1 42U rack at work about 3/4 filled with old PowerEdge servers & disk arrays. With them crunching the extra power consumption & load on the UPS systems is not small. The UPSs go from about 30% at idle to 80-85% at full load. With newer hardware I would expect the difference to be even greater.

Our department "pays" a fixed amount for power usage in our labs no matter what we use. The boss man told me that we should be getting our monies worth out of what we are "paying". By "pay" it is just a line item in our budget that was assigned by the bean counters.
35) Message boards : Number crunching : The current top cruncher (Message 1571492)
Posted 8 days ago by Profile HAL9000
There is another Charles Long in Asteroids@Home. Participant since 22 Jun 2014 and he/she is top 1 already, with huge RAC over 21M, second best has 600K.

Coincidence?

Probably the same person(s) but using different account for each project.
http://boincstats.com/en/stats/-1/user/detail/2715986/projectList
http://boincstats.com/en/stats/-1/user/detail/2956508/projectList
http://boincstats.com/en/stats/-1/user/detail/3085222/projectList
36) Message boards : Number crunching : -unroll xx -- how high?? (Message 1571489)
Posted 8 days ago by Profile HAL9000
TBar, I believe

In ap_cmdline_win_x86_SSE2_OpenCL_ATI.txt

I have this setting;
-unroll 18 -ffa_block 4096 -ffa_block_fetch 2048 -sbs 256


With the r7 265 and the 7770, the r7 is at about 79-91% utilization with the 7770 at 31%. How far should I push -unroll? Go beyond -unroll 18? Safely?


Fearful :-)

With that amount of load on the 7770 it may have been processing a heavily blanked task at the time. In Task Manager you will see one of the GPU apps using more CPU time when this is happening. If that is the case. You can either wait for the task to complete or suspend seeing what another task will do.
37) Message boards : Number crunching : Computer Upgrades - normal or not? (Message 1571198)
Posted 9 days ago by Profile HAL9000
You video card users are making me jelous. All I have is on board graphics with 512MB shared memory. A AstroPulse puts a heavy system lag time on this number cruncher machine. Just glad it only takes 30 hours (approx.) to do one.

Some system tweaking or drivers newer than Cat 10.4 might help resolve some of the lag issues. Then again it could just be a limitation of the built in graphics of that system.
I am using the built in Intel Graphics on this machine. Which takes about a day to do an AP, but it doesn't seem to lag it. For about $75 it is a great little machine.

Also as far as crunching with old out of data bits you may like to see this machine. It runs 24/7 and is sporting a RAC of about 60.
38) Message boards : Number crunching : HP laptop power cords (Message 1571170)
Posted 9 days ago by Profile HAL9000
Got my replacement cord earlier this week and just got around to Opening it. Turns out the replacement is a 2 meter cord. Where the one that came with my notebook was only 1 meter. So that is nice to have. As I had found the original shorter cable very annoying.
39) Message boards : Number crunching : Long-running work unit (Message 1571012)
Posted 9 days ago by Profile HAL9000
Go to your list of computers
http://setiathome.berkeley.edu/hosts_user.php
Select Tasks for that machine.
In the Task column choose Show names.
Locate the task & click on the Work Unit ID next to it in the list.
Now you can look at the Task details for the wingmates that have completed it.
40) Message boards : Number crunching : Long-running work unit (Message 1570987)
Posted 9 days ago by Profile HAL9000
If I have a troubled task I check to see if any of the wingmates that were also assigned the task has issues. If not I'll give it one more go before calling it quits.


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