Posts by Fardringle

1) Message boards : Number crunching : Optimizing the apps (Message 3162)
Posted 11 Feb 2021 by Fardringle
Post:
Your NVIDIA GTX 1060 has 3 Gb memory and it is possible that the GTX 1060 in Marsinph's computer has 6 Gb. If so, that might explain the difference in run time.

Edited to correct typo.

The 6GB version is a little bit faster than the 3GB version, but not by a large amount except in situations that make use of a lot of vRAM. I've been watching the status in GPU-Z, and Collatz is only using about 1GB of vRAM on the card so I'm not sure that's the cause. It's still a possibility, but would seem more likely if Collatz was actually using a significant amount of RAM on the card...
2) Message boards : Number crunching : Optimizing the apps (Message 3154)
Posted 10 Feb 2021 by Fardringle
Post:
PCs are not hidden. They were hidden temporarily, but I think I did that by accident when I was turning the AMD card off for testing purposes. I actually stopped running the project after seeing that the GTX 1060 wasn't doing very well, so there are currently only a few completed Nvidia tasks with the verbose option set to 1, but you can see the completed tasks for this computer here: https://boinc.thesonntags.com/collatz/results.php?hostid=875264&offset=0&show_names=0&state=4&appid= I told the project to stop using the AMD card for now so there will only be new results from the 1060...

It did actually complete one task with threads set to 8, although the vast majority crashed within a few seconds with that setting. The rest of the tasks with verbose on are running with these settings:
verbose=1
kernels_per_reduction=48
sleep=1
threads=7
lut_size=17
reduce_CPU=0
sieve_size=30
cache_sieve=1
3) Message boards : Number crunching : Optimizing the apps (Message 3152)
Posted 9 Feb 2021 by Fardringle
Post:
The tasks do actually run with those settings, so I either didn't try those specific numbers, or something else changed since the last time I tried. However, they don't seem to have any real effect on the task run times for this GPU. Still getting the same 13-15 minutes range (780-900 seconds) as it gets with a blank .config file. Maybe that's just the best that this card can do. It's not a big deal, but I don't like mysteries that don't make sense.. ;)




Hello,
No, you not run the optimozed !
Look the detail from one of the latest valid WU.

Yes you card can do much better. I have the same GPU. It runs in 550 sec.
Try the following settings :
verbose=1
kernels/reduction=48
threads=8
lut_size=17
sieve_size=30
sleep=1
cache_sieve=1
reduce_cpu=0

Be very carefull : copy it in a notepad (not word)
Save ti under : collatz_sieve_1.30_windows_x86_64__opencl_nvidia_gpu.config
Yes the extension is "config" (the extension "txt" from notepad need to be removed)
Of course in folder C:\ProgramData\BOINC\projects\boinc.thesonntags.com_collatz
Not need to restart Boinc. It will run at the next WU.
Enjoy

It crashes with threads=8. Runs OK with threads=7 but is slow, so I probably just won't run the project with the GTX 1060.

But yes, I am using that exact file name (it does not have a .txt extension) in the correct place and tried it with the same settings that you have except I had verbose turned off and threads=7. And I know that it is using the .config file because the tasks immediately fail if I change threads to 8 or higher.
4) Message boards : Number crunching : Optimizing the apps (Message 3150)
Posted 9 Feb 2021 by Fardringle
Post:
The tasks do actually run with those settings, so I either didn't try those specific numbers, or something else changed since the last time I tried. However, they don't seem to have any real effect on the task run times for this GPU. Still getting the same 13-15 minutes range (780-900 seconds) as it gets with a blank .config file. Maybe that's just the best that this card can do. It's not a big deal, but I don't like mysteries that don't make sense.. ;)
5) Message boards : Number crunching : Optimizing the apps (Message 3149)
Posted 9 Feb 2021 by Fardringle
Post:
Thanks for the response. I didn't keep track of every exact setting I tried so I'm not sure if I used those, but I'll give them a try and see what happens. :)
6) Message boards : Number crunching : Optimizing the apps (Message 3147)
Posted 9 Feb 2021 by Fardringle
Post:
I'm not sure if it's best to post here or start a new thread, so I'll go here first..

I decided to give the optimization settings a try on a couple of older GPUs to see what happens.

The recommended settings for the R9 290X are great for my R9 280X. They cut task run times in half, resulting in about 2.8M points per day, which is not bad at all for a really old card.

Unfortunately, I can't seem to get the recommended settings to work for my GTX 1060Ti 3GB. In fact, no matter what settings I put in there or how I change the numbers, if there is ANYTHING in the Nvidia config file, all tasks fail after just a few seconds of run time. This GPU runs other projects without any trouble and isn't overheating or throttling, and it runs Collatz OK (but slow) without the optimization settings so I'm not sure what is causing the failures. These are the settings I started with, and have tried raising and lowering the kernels, threads, lut_size, and sieve_size individually but haven't managed to get a single successful work unit completion unless the config file is completely blank. I also tried it with sleep and cache_sieve at 0 and 1 with no change...

verbose=0
kernels_per_reduction=48
sleep=0
threads=10
lut_size=17
reduce_CPU=0
sieve_size=30
cache_sieve=1




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