I got a pair of GTX 980 ti cards cheaply on Craigslist, and decided to temporarily add a third cruncher ("arf-PC") to my stable just to see what they can do (vs. my GTX 980 crunchers). I decided to set them up as GPU only and run stock on them, at least for a while. I'm using an I7-950 with 24GB of RAM (8 threads) which I had on hand for arf-PC.

I was very surprised to see that not only did the servers send me CUDA42 and CUDA50 (as expected), but also opencl_nvidia_SoG and opencl_nvidia_sah.

Are these latter two the same as in Lunatics? When were they incorporated into the stock downloads?

Interestingly, the 2 opencls are much faster than the CUDAs (see below), so I may just stick with the defaults instead of going to Lunatics.

Here's my current results:


Program:............#WUs Done:..APR (GFLOPS):

CUDA42..............147..........37.30
CUDA50...............31..........48.16
opencl_nvidia_SoG....32.........123.50
opencl_nvidia_sah....27.........116.04

And in line with that, the servers are sending me only opencls now.

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I was very surprised to see that not only did the servers send me CUDA42 and CUDA50 (as expected), but also opencl_nvidia_SoG and opencl_nvidia_sah.

Are these latter two the same as in Lunatics? When were they incorporated into the stock downloads?

You can always check the answers to questions like that on the Applications Page - click 'Participate' on the navigation bar above, penultimate link.

In this case, the answer is 18 May 2016 - which makes the stock versions (r3430) quite a bit older, and more troublesome, than the latest Betas (r3528). But hopefully all three sources (stock, Beta, Lunatics) will be brought into line in the next few days.

Next few days? Excellent to hear!

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Next few days? Excellent to hear!

Don't hold your breath. Raistmer has asked Eric for a release, but Eric hasn't yet responded. Remember that Raistmer said it was ready back in May, but events proved otherwise...

In this case, the answer is 18 May 2016 - which makes the stock versions (r3430) quite a bit older, and more troublesome, than the latest Betas (r3528). But hopefully all three sources (stock, Beta, Lunatics) will be brought into line in the next few days.

Thanks for the answer. I had been running Lunatics just about forever on my other machines, so I missed that. And actually, it's better, since the opencls run 2.5-3x faster on my gtx980tis than the cudas, and I never would have known this if I hadn't run stock. And that is without fiddling with the parameter files for them.

Also, is there any way for the servers or me to run _sah only on the Arecibo WUs and _SoG only on the others? I.e, split 8.12 into two separate app groups?

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Next few days? Excellent to hear!

Don't hold your breath. Raistmer has asked Eric for a release, but Eric hasn't yet responded.

I received E-mail from Eric. Unfortunately he is ill so all activities should wait until he is healed.

Remember that Raistmer said it was ready back in May, but events proved otherwise...

Perhaps you need to explain your definition of word ready then. Holding that rev on beta month, two or more did not change anything for quite obvious reasons.

EDIT: to make it clear: 8.19 is not bugfix of 8.12, it's next development stage.
And development continues. And this continuation can't be the reason to slowdown release of what is done already. That should be understood well before such sentences appear.

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SETI apps news
We're not gonna fight them. We're gonna transcend them.

It is looking like arf-Pc (running stock) will outRAC my other machine (running Lunatics 44, with one CPU, an E5-2670, more advanced than the arf-PC CPU, an I7-950).

Is it possible to go back to stock from Lunatics and not lose current work? If so, how do I do it?

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Is it possible to go back to stock from Lunatics and not lose current work?

I don't think it's possible (it involves 'Project Reset')

But you may wait "a few" days/weeks for the "final" Lunatics v0.45
Or just now try Lunatics v0.45 - Beta4 (have SoG for NVidia r3500)
http://setiathome.berkeley.edu/forum_thread.php?id=79704

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- ALF - "Find out what you don't do well ..... then don't do it!" :)
 

Is it possible to go back to stock from Lunatics and not lose current work? If so, how do I do it?

From Richard Haselgrove:

   Message 1758225
   Message 1774937 (also review the ensuing seven posts)

Well, it's been a couple of days now, and things seem to have settled down a bit. ARF-pc is actually out-RACing another, similar machine running Lunatics 0.44, I7-3820-PC, which has 2 x GTX 980s and an 8-core E5-2670 (running HT OFF). So somewhat more graphics power on the new machine, but the old one has a newer (with AVX) CPU and is also running 6 threads of CPU work (MB only).

Arf-PC settled on the opencl SOG executable, and that's all it is running now, except for APs. All GPU only because of the CPU requirement for the GPUs.

Each SOG thread requires a full CPU allocated via app_config. But I recall reading that there is a way to give the app parameters to cause it to 1) not need a whole CPU/thread and 2) cause it to run faster.

Can someone enlighten me as to how to do that for stock, and also give me a default parameter set for it, so I can see how much my RAC might improve? Thanks!

By the way, after this new experiment, I think I will back-fit I7 with stock and see what happens.

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