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-   -   mfakto: an OpenCL program for Mersenne prefactoring (https://www.mersenneforum.org/showthread.php?t=15646)

Bdot 2011-12-07 14:45

[QUOTE=Bdot;281310]:grin: :grin: :grin:

Anyway, testing the new mfakto version on Windows with 11.9 and 11.11 went well and everything seemed fine. Today I updated my Linux box to 11.11, and guess what I get within minutes ...
[code]
[fglrx] ASIC hang happened
[/code][/QUOTE]

I found AMD has updated the docs to their APPSDK of August:
[code]
For a successful build and correct operation of individually downloaded s when using the Linux
Catalyst 11.11 drivers or later and the Linux AMD APP SDK 2.5, delete the old 2.5 runtime
files from /opt/AMDAPP/ .
To do this for 32-bit Linux OS:
a. Go to /opt/AMDAPP/lib/x86.
b. Delete the libamdocl32.so and the libOpenCL.so.1 files.
c. Create a symlink under /usr/lib using the command
# ln –s libOpenCL.so.1 libOpenCL.so
To do this for 64-bit Linux OS:
a. Go to /opt/AMDAPP/lib/x86.
b. Delete the libamdocl32.so and the libOpenCL.so.1 files.
c. Go to /opt/AMDAPP/lib/x86_64.
d. Delete the libamdocl64.so and the libOpenCL.so.1 files.
e. Create a symlink under /usr/lib using the command
# ln –s libOpenCL.so.1 libOpenCL.so
f. Create a symlink under /usr/lib64 using the command
# ln –s libOpenCL.so.1 libOpenCL.so
[/code]3 mfakto instances running now for over 2 hours without any hang, so this seems to be solved! Now I can actually go and do the final changes and tests for mfakto 0.10 release.

KyleAskine 2011-12-10 17:21

[QUOTE=Bdot;281388]Now I can actually go and do the final changes and tests for mfakto 0.10 release.[/QUOTE]

Any ETA? I am going to have to wipe one of my computers soon, and I am installing a new GPU in another. I would prefer to wait until the new mfakto is out so I can go right to the latest drivers in both cases.

Thanks for all of your work!

Bdot 2011-12-11 19:37

[QUOTE=KyleAskine;281787]Any ETA? [/QUOTE]
Well, not too soon. I'm incorporating some mfaktc-changes, and more of an issue, I started bigger restructuring changes that I should have postponed for the next version.

So certainly not before next weekend, and due to saisonal increases of the importance of the family, it may take even longer :smile:.

However, I can send you a testing version for win/64 that was stable* before I started my restructuring. It does not have a lot of changes from 0.09, but runs on 11.11. Send me a pm with your email if you're interested.

* safe to be used to submit results.

KyleAskine 2011-12-11 21:33

[QUOTE=Bdot;281865]Well, not too soon. I'm incorporating some mfaktc-changes, and more of an issue, I started bigger restructuring changes that I should have postponed for the next version.

So certainly not before next weekend, and due to saisonal increases of the importance of the family, it may take even longer :smile:.

However, I can send you a testing version for win/64 that was stable* before I started my restructuring. It does not have a lot of changes from 0.09, but runs on 11.11. Send me a pm with your email if you're interested.

* safe to be used to submit results.[/QUOTE]

I can hold out and just load 11.9

Thanks again for everything you do for us!

flashjh 2011-12-13 19:09

Computer config question -- help.
 
Hey everyone,

Looking for some guidance/help. I was running a QX9650 with two HD 5870s. I haven't actually added up the GHz/Days with that setup, but it ran very well.

Anyway, since I could't max the GPUs with the CPU I decided to upgrade my system.

I bought a dual CPU Opteron 6272 (32 cores total) with the Asus KGPE-D16 motherboard. The system works great but now I can't get mfakto to push my GPUs for anything (like at least 8 times slower). I tried the newest pre-release with 11.11 and then reverted back to the older mfakto with 11.9; same result.

I know it's a new CPU and all, but with two full 16x PCI-e slots I figured the 5870 would be screaming on this thing.

Like I said, everything works great besides that but I got this setup for mfakto.

Any help is appreciated. Since it isn't working I'm going to sell it off any buy something better suited for mfakto -- what does everyone suggest for the fastest single system mfakto crusher? Thanks!

diamonddave 2011-12-13 19:21

[QUOTE=flashjh;282070]Hey everyone,

Looking for some guidance/help. I was running a QX9650 with two HD 5870s. I haven't actually added up the GHz/Days with that setup, but it ran very well.

Anyway, since I could't max the GPUs with the CPU I decided to upgrade my system.

I bought a dual CPU Opteron 6272 (32 cores total) with the Asus KGPE-D16 motherboard. The system works great but now I can't get mfakto to push my GPUs for anything (like at least 8 times slower). I tried the newest pre-release with 11.11 and then reverted back to the older mfakto with 11.9; same result.

I know it's a new CPU and all, but with two full 16x PCI-e slots I figured the 5870 would be screaming on this thing.

Like I said, everything works great besides that but I got this setup for mfakto.

Any help is appreciated. Since it isn't working I'm going to sell it off any buy something better suited for mfakto -- what does everyone suggest for the fastest single system mfakto crusher? Thanks![/QUOTE]

This look like a Bulldozer CPU setup?

Try looking in the "Hardware>Launch of the AMD FX 8 Core processor" less then stellar review! :sad:

Dubslow 2011-12-13 22:43

Yes, the problem with bulldozers is that there is only one FPU for every two ALU's, so a module is not truly two cores. OTOH, I remember reading that mfakt* is supposed to run on the ALU's...

The other note is that Windows and Linux ATM are [i]horrible[/i] at process scheduling on Bulldozers, because they aren't aware of the architecture's oddities. Windows 8 at least should see a major performance increase on Bulldozer because it will understand the module architecture and will thus schedule processes better.


Edit: Conclusion is for now at least, not Bulldozer.

flashjh 2011-12-13 22:50

[QUOTE=Dubslow;282100]Yes, the problem with bulldozers is that there is only one FPU for every two ALU's, so a module is not truly two cores. OTOH, I remember reading that mfakt* is supposed to run on the ALU's...

The other note is that Windows and Linux ATM are [i]horrible[/i] at process scheduling on Bulldozers, because they aren't aware of the architecture's oddities. Windows 8 at least should see a major performance increase on Bulldozer because it will understand the module architecture and will thus schedule processes better.


Edit: Conclusion is for now at least, not Bulldozer.[/QUOTE]

That makes me wonder if it's worth holding on to or not? Anyway, I'm putting my Intel system back together for now. What a shame.

Dubslow 2011-12-13 22:55

[QUOTE=flashjh;282101]That makes me wonder if it's worth holding on to or not? Anyway, I'm putting my Intel system back together for now. What a shame.[/QUOTE]

I have no idea. Considering how much it must have cost, probably holding on to it is better then throwing it away, unless you intended to sell it.

flashjh 2011-12-13 23:05

[QUOTE=Dubslow;282105]I have no idea. Considering how much it must have cost, probably holding on to it is better then throwing it away, unless you intended to sell it.[/QUOTE]

Well, I would either sell everything or set it up for P-1/LL processing. It does a really amazing job for that. I just want to concentrate on TF for now and it's horrible for that.

I'll probably list it for what I paid and use it until then. I just need another power supply that won't arrive until Friday.

For max TFing, what system do you recommend?

KyleAskine 2011-12-13 23:15

[QUOTE=flashjh;282106]Well, I would either sell everything or set it up for P-1/LL processing. It does a really amazing job for that. I just want to concentrate on TF for now and it's horrible for that.

I'll probably list it for what I paid and use it until then. I just need another power supply that won't arrive until Friday.

For max TFing, what system do you recommend?[/QUOTE]

My i5-2500K overclocked to 4.6GHz saturates my 2x6970 at around 35000 primes sieved. Just one instance for each card.

You don't need to go super expensive to do this.

[URL="http://i.imgur.com/7vRKE.jpg"]http://i.imgur.com/7vRKE.jpg[/URL] <-- Pic of me saturating my cards


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