Posts by HAL9000


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21) Message boards : Number crunching : CPU time difference (Message 1793678)
Posted 24 days ago by Profile HAL9000
Yep, you can't compare i3 CPU times to i5 times as the i3 is 4 virtual cores made out of 2 physical cores whereas the i5 is just 4 pure cores, no comparison at all.

Cheers.

Their i3 host is clearly having some other issue. My old i3-390M can complete work several times faster than what they are presently seeing.
22) Message boards : Number crunching : Open Beta test: SoG for NVidia, Lunatics v0.45 (Message 1793677)
Posted 24 days ago by Profile HAL9000
HKEY_LOCAL_MACHINE\Software\Wow6432Node

That sounds like a goer. I can ask for something universally present, like

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\CurrentVersion

and if I get an answer, I'm on a 64-bit machine? Silence means 32-bit? I'll give it a try. Thanks.

I've found these keys helpful for determining the OS architecture.
HKEY_LOCAL_MACHINE\HARDWARE\RESOURCEMAP\Hardware Abstraction Layer\ACPI x64 platform
HKEY_LOCAL_MACHINE\HARDWARE\RESOURCEMAP\Hardware Abstraction Layer\ACPI x86 platform
23) Message boards : Number crunching : CPU time difference (Message 1793442)
Posted 25 days ago by Profile HAL9000
Right click on the BOINC icon in the task tray down by the clock, and choose Snooze GPU tasks. That should do it.

That will only cause GPU processing to stop for 1 hr. Using the menu option to select suspend GPU processing will remain active until changed again by the user.
24) Message boards : Number crunching : CPU time difference (Message 1793423)
Posted 25 days ago by Profile HAL9000
Re: http://setiathome.berkeley.edu/workunit.php?wuid=2173961623

How can two computers rated at roughly the same speed produce the same result, one consuming 8X the CPU time as the other?

Hm... very interesting case.
What about cache (L2 cache) size of your i3 and wingman's i5?

i3-6100 3MB
i5-2500 6MB
http://ark.intel.com/compare/52209,90729
25) Message boards : Number crunching : CPU time difference (Message 1793422)
Posted 25 days ago by Profile HAL9000
Re: http://setiathome.berkeley.edu/workunit.php?wuid=2173961623

How can two computers rated at roughly the same speed produce the same result, one consuming 8X the CPU time as the other?

All CPU tasks on your i3-6100 are taking a very long time. You may want to use an app like CPUz to confirm that your CPU is running at its rated clock speed. If it isn't perhaps there could be a thermal issue.
If everything looks OK I would suggest suspending GPU processing and see if the CPU times improve.
26) Message boards : Number crunching : No more guppi's=vlars on the gpu please (Message 1793419)
Posted 25 days ago by Profile HAL9000
I'm firmly in the "If they are sent to my crunchers I'll let them crunch" camp. I would rather one of mine didn't get so many guppi, but it does, so it carries on crunching.

Indeed. The original reason for not sending VLARs to GPUs was that, at the time, they could cause a host to lockup or crash.
I don't see the argument that they run less efficiently on GPUs now as valid. If we are going that route we might as well disallow NV GPUs from downloading AP tasks. Since they are less efficient than Radeon GPUs at processing the tasks.

Having options from the project to tailor which apps and what kind of work run on specific hardware would be nice. Something similar to what Collatz or PrimeGrid have would probably be ideal, but require a lot of work.

Out of curiosity do we know how iGPUs handle these tasks?
27) Message boards : Number crunching : GPU Wars 2016: News & Rumors (Message 1793046)
Posted 27 days ago by Profile HAL9000
I dunno, one part of me feels NV has held back, just because p100 supposedly is a thing, and 1080 is 'only' ~2x970. Sure, bad yields + HBM2 unavailability, but never stopped NV prematurely launching unobtainium before.

Another part is that traditionally AMD has been in bed with m$ via XBox, and now has ties with Samsung and China, so low to medium end mass production seems like a probable advantage there for them.

Last part that bothers me, is that the topend consumer/gaming cards usually require more power. Of course using less power is good for preserving fossil fuels, but there are those with hydro power, nuclear and renewable sources of energy these days. Pushing the 300W PCIe spec limits probably isn't a big deal for some number of customers

So my feeling is the 1080 is mid-high-end, rx480 upper mid, and the true mainstream and ultra-enthusiast platforms are yet to appear.

Looks to me like they're just avoiding competing for the time being, at least until they can build the emerging VR and 4k gaming markets which Intel and m$ have no hope of surviving in. [Consider: Samsung makes 4k screens I believe]

Looking at the trend for the R9 x80 cards the 400 series looks like a heck of a bump in oomph. While being more affordable and efficient.
R9 280 2964 GFLOPs SP 250w $249
R9 380 3476 GFLOPs SP 190w $329
RX 480 5000 GFLOPs SP 150w $199

My R9 390X is only ~6000 GFLOPs. So I look forward to seeing what they do with the rest of the range. If the high end Fury GPUs get a similar treatment I might even end up going that route for one of my system.
28) Message boards : Number crunching : Thoughts on this card, Deal or more likely Crapshoot? (Message 1792881)
Posted 27 days ago by Profile HAL9000
This seems kind of like a frankenstein card that someone has whipped together? Wierd stuff, for certain, and the performance isn't all that great either. Def seems like kind of a kludge card.

Since everything fits the 760 192-bit GPU specs except the cores. It is likely these cards were built from chips with a large number of dead/non working cores. It looks like you got a few of these. Do they all show 192 shaders?
Using silicone that doesn't meet all the specs for the intended product in a lower end product is a legitimate business practice. It is why you will often see different level products with the same base silicone.
29) Message boards : Number crunching : GPU Wars 2016: News & Rumors (Message 1792879)
Posted 27 days ago by Profile HAL9000
$200, only 150W TDP, and greater than 5 TFLOPS of performance. This might be one cheap beast for us crunchers!

The 1070 is also only 150W TDP, so I would guesstimate the 1060 when it appears, in 3 months, might be as low as 100W TDP and cheaper.

The NV 10 series looks to have a $50 bump in price over the 900 series. So the 1060 will likely be $250 & only ~3500 GFLOPs.
30) Message boards : Number crunching : Thoughts on this card, Deal or more likely Crapshoot? (Message 1792774)
Posted 28 days ago by Profile HAL9000
Wow, this just went from interesting to unfortunate. Well, I knew from the begininng that it was a crapshoot, and turns out that it came up craps. Oh well, it was interesting, could have went the other was as well, but like they and I very often say, if it seems too good to be true, it probably is. C'est la vie!

It seemed kind of fishy up front, but sometimes there are OK things from the Chinese knock off market.
31) Message boards : Number crunching : LotzaCores and a GTX 1080 FTW (Message 1792717)
Posted 28 days ago by Profile HAL9000
Thanks Keith, I thought I would start with Imgur, I was trying to avoid the big boys, and Yahoo owns Flickr. I tried posting a pic in my thread about my unusual "GTX770", and it came thru fine, so it appears that at least it works. If it gives me any guff, I'll switch in a heartbeat, as there are a number of options I've found.

I have accounts with several of the image hosting sites, but I like Imgur. It is currently one of the least convoluted with the features I want.
32) Message boards : Number crunching : GPU Wars 2016: News & Rumors (Message 1792707)
Posted 28 days ago by Profile HAL9000
Watching the vid. RX480 US$199 and VR capable ?

Since the the rest of the VR gear is around $800 having the GPU be less expensive is nice I guess.
33) Message boards : Number crunching : Thoughts on this card, Deal or more likely Crapshoot? (Message 1792705)
Posted 28 days ago by Profile HAL9000
Based on the tasks taking ~40min when you were running two at once I think these cards might really only have 192 shaders. Given many GTX 750 Ti GPUs will do two at a time in about 25min with 640 shaders.

Have you checked power consumption with the GPU running vs not? If they pull 130-170w like a GTX 760 or GTX 770 does then they might not be very efficient.
34) Message boards : Number crunching : GPU Wars 2016: News & Rumors (Message 1792200)
Posted 30 May 2016 by Profile HAL9000
I'm very curious as to what the 1060 and even the 1050 will perform like, as well as power consumption. In the blurbs I've been reading about pascal, best rumour I've heard is late summer/early fall, anyone see anything else mentioned about them?

The 1070 is to be released June 10th. The 1060 is said to be released in "the fall". Which looks to fit their normal schedule of releasing the first GPUs a few weeks apart. Then staggering the rest at 3+ month intervals.
35) Message boards : Number crunching : LotzaCores and a GTX 1080 FTW (Message 1791746)
Posted 29 May 2016 by Profile HAL9000
Well, just got up, so I went down, paused and then exited BOINC, uninstalled and then reinstalled Lunatics, and it seemed to start right where it left off, with no drama. Only thing slightly unusual was that windows security asked if it was alright to allow BOINC thru the firewall, I've never seen that one before.

I am running Hynix 1866 memory, in singles per bank to allow the system to utilize it at the full speed, as I read that more sticks = slower speeds. And 32 gig is more than enough for what I am running on this.

So far, looking at temps, it appears that they may have crept up a few degrees, maybe an average of 3-5, but it looks like they are still for the most part at 50 or below except on 3-4 cores out of 24 on each CPU. But, I suppose that will vary depending on they type of WU is being processed.

I have seen several benchmarks over the years that have shown an increased latency as the number of DIMMs per memory channel is increased. So I try to stick to one DIMM per channel as well.

Normal AR tasks with the AVX app appear to be running slightly faster. With run times as low as 2hr50min. Once you start using GPUs that could change. The GPUs could either choke the CPU tasks or be restricted by already saturated memory i/o. Then again maybe nothing will change. This system system has been defying all previous attempts at logical behavior thus far.

Is the increase in temp you mentioned after using the AVX app? That would normally be reasonable behavior.
36) Message boards : Number crunching : LotzaCores and a GTX 1080 FTW (Message 1791730)
Posted 29 May 2016 by Profile HAL9000
Good info to know, thanks. Last thought, is the problem the size of the database in terms of it's software abilities, it's hardware limitations, storage limitations? Do you happen to know what the bottleneck is and any thoughts on what would be needed to address and correct it, so we wouldn't run into problems with it again for many years? Money, obviously, but on what? Thanks!

I think All of the Above is probably the most accurate answer regarding the db limitations. I don't believe anything has changed since you were asking about the limits a few weeks ago.
It was mentioned, maybe last year, that other database options were being explored. Breakthrough Listen may have interrupted that process. It was also mentioned they were looking to reduce their server footprint. So smaller more powerful servers may go hand in hand with new db software.
37) Message boards : Number crunching : LotzaCores and a GTX 1080 FTW (Message 1791637)
Posted 29 May 2016 by Profile HAL9000
Good metric to gauge optimal loading might be temperature, or power from the wall. With the beanbag analogy it'd be firmness.

Keep an eye on temperatures when running the AVX application.
On my i7 system it was (barely) able to run the SSE3 application without getting too hot. With the AVX application I had to replace the stock cooler- it worked the CPU that much harder. And the crunching times came down, a lot.


Yeah, don't burst the beanbag. AVX shaped beans are larger and denser, lol.

I suspect that AVX may prove to be slower on that system. With 48 tasks at once that is a lot to stuff down the memory pipeline all at once.
It may not be the most correct way to say it, but I think higher level SIMD instructions tend to be more memory intensive.
I was already very surprised by the performance of the E5 v2 CPUs versus the E5 previous generation. So I'm split 50/50 on how AVX will compare to SSE3 & will have to find out if they are using DDR3 1600 or 1866 memory.

AVX apps proved to be the most efficient on my i5-4670K systems with DDR3 1600 memory.
38) Message boards : Number crunching : LotzaCores and a GTX 1080 FTW (Message 1791550)
Posted 29 May 2016 by Profile HAL9000
Running all 48 at once. I'll head downstairs now and take a look at it to see if the temps are still in the same range.

I would have expected to see a much larger difference between the Run Time & CPU Time with 48 running. Looks like normal AR tasks are pretty solid between 2hr59min & 3hr6min. You could switch to the AVX app tomorrow to see how it runs. Unless you want to get more data on how VLARs run, but they normally track the same between the CPU apps.
39) Message boards : Number crunching : LotzaCores and a GTX 1080 FTW (Message 1791527)
Posted 29 May 2016 by Profile HAL9000
Well, instead of over-running the GPU Wars 2016: GTX1080 thread with my new build info and questions, I thought it would be more proper to start a new one with my experiences with both a large number of cores (48) and the new EVGA 1080 FTW. As I just put the order in to EVGA last night, and honestly don't know exactly when they will be shipping it, initially this thread will be about the 48 core build, and the things I run into in the process.

I'd expect the 1080 to hopefully ship sometime next week, but it will get here when it gets here, I'm not going to sweat it. I'm interested in how this system runs when running 48 cores at once, as it is only a 2.2ghz proc, though it speeds up to 3.0 in certain situations. I just couldn't justify the cost of the 2.7/3.6ghz version, they were like 4x the cost if I remember correctly. And this is just a V2 version, I wouldn't even want to think about what the V3 or V4's would cost...

Well, this is my newest addition, and I'm going to see how it produces for me with just the optimized app (using SSE3 this time, and AVX when I install the new card), feel free to check on in on it's progress as time goes on. Oh, and one thing I noticed right now, as it is using SuperMicro's OEM coolers, is that the temps are running between 43 and 54, with the vast majority running between 45-50. That is one of the benefits of running the 2.2 CPU (Coretemp says it is running at 99.4 watts currently, while crunching on all cores), it is 10-15w lower power draw than the 2.4, and I believe 35 or so watts lower than the 2.7. This is good, because I tried installing Speedfan, and it installed properly, it just doesn't allow me to control _anything_ unfortunately. I may ping SuperMicro next week, to see if they have any software controls which allow me to optimize the temps a bit by spinning up the fans.

Looks like normal AR tasks are running just a hair over 3 hours with the SSE3 app. Is that running all 48 threads or have you limited it to running fewer?
40) Message boards : Number crunching : Using Android mobiles to crunch BOINC stuff (Message 1791520)
Posted 29 May 2016 by Profile HAL9000
Grant, that is very good info to know. I go thru laptop batteries much too quickly, due to the fact that they are plugged in 90%+ of the time, used as a desktop replacement. The mfg's must know this, they should have much smarter chargers, and not allow _any_ charging after 100% (and allow the option of slow charging) when the battery is in a docked situation, but they know this, and make a very good profit off of selling replacements. As well as the aftermarket, but those can _definately_ be hit or miss... And I've found that if my laptop has no battery, it won't boot. Such a deal, eh? That one has bugged me for Years.

Most computer manufactures put somewhere in the documentation that is the notebook will be plugged in for extended periods to remove the battery. I know for some devices, Apple notebooks & many mobile devices, battery removal isn't an option. So the user has to be knowledgeable if they want to have the greatest battery life expectancy & avoid micro charge cycles killing a battery.


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