gpuOwL: an OpenCL program for Mersenne primality testing

[philbo0042]

Originally Posted by kriesel

Try adding -use ORIG_X2
as in

gpuowl-win -device 0 -use ORIG_X2 -user kriesel -cpu condorella/rx480

in a command line or batch file, or put the option in config.txt
It's been mentioned before, but there are a LOT of posts to search through.

Thank you! After some more reading of this thread and experimentation with the code above, I finally got it to work. It is working very slowly, though. This is what I see in the command box.

2019-11-10 20:44:07 gpuowl v6.5-61-g5c0db85
2019-11-10 20:44:07 config: -device 0 -use FMA_X2 -user philbo0042 -cpu condorella/rx480
2019-11-10 20:44:07 condorella/rx480 99004823 FFT 5632K: Width 256x4, Height 64x4, Middle 11; 17.17 bits/word
2019-11-10 20:44:07 condorella/rx480 using short carry kernels
2019-11-10 20:44:08 condorella/rx480 OpenCL args "-DEXP=99004823u -DWIDTH=1024u -DSMALL_HEIGHT=256u -DMIDDLE=11u -DFRAC=3080126294296934958ul -DWEIGHT_STEP=0xe.40580b05b0cf8p-3 -DIWEIGHT_STEP=0x8.fb4ac0cb1db6p-4 -DWEIGHT_BIGSTEP=0x9.837f0518db8a8p-3 -DIWEIGHT_BIGSTEP=0xd.744fccad69d68p-4 -DINVWEIGHT_LIMIT=0xb.a2e8ba2e8ba3p-29 -DFMA_X2=1  -I. -cl-fast-relaxed-math -cl-std=CL2.0"
2019-11-10 20:44:12 condorella/rx480

2019-11-10 20:44:12 condorella/rx480 OpenCL compilation in 4172 ms
2019-11-10 20:44:13 condorella/rx480 99004823.owl loaded: k 4000, block 1000, res64 227c66b344c5b435
2019-11-10 20:47:10 condorella/rx480 99004823 OK     6000  0.01%; 40.224 ms/sq; ETA 46d 02:09; 30625e780467f928 (check 49.80s)

2 questions:

1. Any ideas or suggestions regarding how slow mine is running?
2. The code from Kriesel quoted at the beginning of this post is all I have in the config.txt file. What else should be in it? Nothing appeared obvious from the readme file.

Windows 10
Nvidia GTX 860M 4GB GDDR5 (I think the compute compatibility is 3.0/5.0)
Driver Version: 26.21.14.3648 (GeForce 436.48)

Thank you.

[kriesel]

Originally Posted by philbo0042

Thank you! After some more reading of this thread and experimentation with the code above, I finally got it to work. It is working very slowly, though. This is what I see in the command box.

2019-11-10 20:44:07 gpuowl v6.5-61-g5c0db85
2019-11-10 20:44:07 config: -device 0 -use FMA_X2 -user philbo0042 -cpu condorella/rx480
2019-11-10 20:44:07 condorella/rx480 99004823 FFT 5632K: Width 256x4, Height 64x4, Middle 11; 17.17 bits/word
2019-11-10 20:44:07 condorella/rx480 using short carry kernels
2019-11-10 20:44:08 condorella/rx480 OpenCL args "-DEXP=99004823u -DWIDTH=1024u -DSMALL_HEIGHT=256u -DMIDDLE=11u -DFRAC=3080126294296934958ul -DWEIGHT_STEP=0xe.40580b05b0cf8p-3 -DIWEIGHT_STEP=0x8.fb4ac0cb1db6p-4 -DWEIGHT_BIGSTEP=0x9.837f0518db8a8p-3 -DIWEIGHT_BIGSTEP=0xd.744fccad69d68p-4 -DINVWEIGHT_LIMIT=0xb.a2e8ba2e8ba3p-29 -DFMA_X2=1  -I. -cl-fast-relaxed-math -cl-std=CL2.0"
2019-11-10 20:44:12 condorella/rx480

2019-11-10 20:44:12 condorella/rx480 OpenCL compilation in 4172 ms
2019-11-10 20:44:13 condorella/rx480 99004823.owl loaded: k 4000, block 1000, res64 227c66b344c5b435
2019-11-10 20:47:10 condorella/rx480 99004823 OK     6000  0.01%; 40.224 ms/sq; ETA 46d 02:09; 30625e780467f928 (check 49.80s)

2 questions:

1. Any ideas or suggestions regarding how slow mine is running?
2. The code from Kriesel quoted at the beginning of this post is all I have in the config.txt file. What else should be in it? Nothing appeared obvious from the readme file.

Windows 10
Nvidia GTX 860M 4GB GDDR5 (I think the compute compatibility is 3.0/5.0)
Driver Version: 26.21.14.3648 (GeForce 436.48)

Thank you.

The example I gave is a Windows batch file, not a config.txt. Condorella is my system name, rx480 my gpu model, in this case. (I run several.) Change to match yours.

As for it being slow, A GTX 860M is slow. See https://www.mersenne.ca/cudalucas.php
Only 9 or 17 GHzD/day in primality testing or P-1, depending on whether it's a GK104 or GK107. (RX 480 is about 40.)
The GTX 860M is about 146. or 175. GHzD/day in TF (mfaktc), while the RX 480 is 535. See https://www.mersenne.ca/mfaktc.php
It could be worse. An Intel IGP is generally 20 or less in TF (some were 5GhzD/day), and an old discrete NVS295 was about 2.8 in TF, definitely not worth the electricity or the old driver required for it.

[kracker]

Maybe should have posted in the gpu72 thread - but gpuowl won't accept any other caps variant of "PFactor" in worktodo, it rejects the "Pfactor" from manual P-1 assignments from gpu72

[kriesel]

Originally Posted by kracker

Maybe should have posted in the gpu72 thread - but gpuowl won't accept any other caps variant of "PFactor" in worktodo, it rejects the "Pfactor" from manual P-1 assignments from gpu72

Thanks for the reminder of case sensitivity. I've added a note about it to the quick reference for worktodo format of the various GIMPS applications at https://www.mersenneforum.org/showpo...8&postcount=22

[philbo0042]

Thank you to kriesel and kracker! Y'all are quick to respond and help.

I will do better about figuring out which thread to post to, and I will read through the GPU72 thread when I get home.

Kriesel,

Thank you again for being so informative and helping out a noob. I remember making batch files when I was younger, but it has been a while. I will see what I can do regarding that when I get off work.

I expect a Radeon VII to be delivered this week and am trying to study and be ready to get it going as soon as it comes in. I have not read through the Radeon VII thread yet, but I will read it beforehand.

Thanks again!

[paulunderwood]

Originally Posted by philbo0042

Thank you to kriesel and kracker! Y'all are quick to respond and help.

I will do better about figuring out which thread to post to, and I will read through the GPU72 thread when I get home.

Kriesel,

Thank you again for being so informative and helping out a noob. I remember making batch files when I was younger, but it has been a while. I will see what I can do regarding that when I get off work.

I expect a Radeon VII to be delivered this week and am trying to study and be ready to get it going as soon as it comes in. I have not read through the Radeon VII thread yet, but I will read it beforehand.

Thanks again!

Make sure you have a hefty PSU -- I use a Corsair HX 850. You will need 2x 8pin feeds to the Radeon VII.

[philbo0042]

Originally Posted by paulunderwood

Make sure you have a hefty PSU -- I use a Corsair HX 850. You will need 2x 8pin feeds to the Radeon VII.

Thank you Paul! I had planned on buying a Seasonic FOCUS PX-750 80+ Platinum. I picked it based on the various PSU wattage calculators I found. It works for my approximate idle wattage with about a 15% load on the PSU and I had hoped it would be enough for the new card as well. If not, the 850 may be in my future.

Thank you for that info. I may reconsider my wattage choice.

[kracker]

Originally Posted by philbo0042

Thank you Paul! I had planned on buying a Seasonic FOCUS PX-750 80+ Platinum. I picked it based on the various PSU wattage calculators I found. It works for my approximate idle wattage with about a 15% load on the PSU and I had hoped it would be enough for the new card as well. If not, the 850 may be in my future.

Thank you for that info. I may reconsider my wattage choice.

That is a very good power supply from a good psu company(if not the one of the best). Assuming you don't have more than one "big" gpu, you should be just fine.

[kriesel]

Originally Posted by philbo0042

Thank you to kriesel and kracker! Y'all are quick to respond and help.
...

Thank you again for being so informative and helping out a noob.

Thanks again!

You are now approximately where I was at in March 2017. Climb that learning curve!

[kracker]

Maybe it already exists and I don't know about it: Is there a way for gpuowl to delete exponent/checkpoint files after it finishes? Uses a lot of space, especially in cloud... (yes yes I know I can manually remove the folders but I'm too lazy and don't know why I should be doing that at all )

[kriesel]

Originally Posted by kracker

Maybe it already exists and I don't know about it: Is there a way for gpuowl to delete exponent/checkpoint files after it finishes? Uses a lot of space, especially in cloud... (yes yes I know I can manually remove the folders but I'm too lazy and don't know why I should be doing that at all )

Not in gpuowl to my knowledge. And the OS scripting capability is your friend.
For Windows, put something like "del /s *.owl" in a file called rc.bat. Use with caution. (R for remove, c for checkpoints). Might want to preview first with dir /s *.owl /p.