mfaktc: a CUDA program for Mersenne prefactoring - Page 294

MrRepunit · 2019-11-01, 06:14

Hi all,
just want to announce here in this thread that I finished the generalized repunits version of mfaktc, the long wished for generalization of my base 10 repunits mfaktc variant.
It supports only positive bases (b>=2).

I did not want to hijack this thread, so I created my own:
https://www.mersenneforum.org/showthread.php?t=24901

Feel free to test it.

ixfd64 · 2019-11-11, 21:09

Is there an official mfaktc repository somewhere?

I found a repository on GitHub, but it was last updated in 2015 and doesn't seem to be managed by Oliver.

storm5510 · 2019-11-21, 00:44

Quote:

Originally Posted by ixfd64

Is there an official mfaktc repository somewhere?

I found a repository on GitHub, but it was last updated in 2015 and doesn't seem to be managed by Oliver.

James Heinrich has a mersenne software download mirror on his site, https://www.mersenne.ca. It is at the very bottom on the right side.

James Heinrich · 2019-11-21, 01:48

Quote:

Originally Posted by storm5510

James Heinrich has a mersenne software download mirror on his site, https://www.mersenne.ca. It is at the very bottom on the right side.

Or, more specifically, at https://download.mersenne.ca/

But it's just a download mirror, it's not a repository in the sense that (I assume) ixfd64 meant. He was looking for something like Bdot's mfakto repository on Github, but for mfaktc.

kriesel · 2019-11-21, 03:47

Quote:

Originally Posted by ixfd64

Is there an official mfaktc repository somewhere?

I found a repository on GitHub, but it was last updated in 2015 and doesn't seem to be managed by Oliver.

If you find one, please let me know where, and I'll update the attachment at http://www.mersenneforum.org/showpos...91&postcount=2

storm5510 · 2019-12-09, 01:19

For about 10 days, I have been trying to get the Linux version of mfaktc to run on my Ubuntu system. It tells me it cannot find a specific library, libcurart.so.6.5. This is a CUDA65 version. It was the only one I could find which had all its pieces. I have tried moving the library around, as well as placing it in the same folder as mfaktc. No success.

It seems sort of odd that a Linux executable would have a ".exe" extension.

paulunderwood · 2019-12-09, 01:25

Quote:

Originally Posted by storm5510

For about 10 days, I have been trying to get the Linux version of mfaktc to run on my Ubuntu system. It tells me it cannot find a specific library, libcurart.so.6.5. This is a CUDA65 version. It was the only one I could find which had all its pieces. I have tried moving the library around, as well as placing it in the same folder as mfaktc. No success.

It seems sort of odd that a Linux executable would have a ".exe" extension.

Can you post the result of sudo apt-cache search cudart ? If it is not there and you have the shared object library, the best place for it is probably /usr/local/lib64/

ixfd64 · 2019-12-09, 04:51

Quote:

Originally Posted by storm5510

It seems sort of odd that a Linux executable would have a ".exe" extension.

I wrote a modified makefile that addresses this issue: https://mersenneforum.org/showpost.p...postcount=3188

storm5510 · 2019-12-09, 13:44

Quote:

Originally Posted by paulunderwood

Can you post the result of [sudo apt-cache search cudart ? If it is not there and you have the shared object library, the best place for it is probably /usr/local/lib64/

This search produced:

Code:

libcurart10.1 - NVIDIA CUDA Runtime Library.

This indicates a CUDA10 library. I have an archive with an executable which uses this. When I try to run it, I get the same message, but the file name is different: libcudart.so.10.1 This archive is for compilation and has no libraries in it.

paulunderwood · 2019-12-09, 14:55

You can compile the source. This how...

Make sure "non-free" is ticked in aptitude. Then:

Code:

sudo apt-get update
sudo apt-get install build-essential m4 libcudart10.1 nvidia-cuda-dev nvidia-cuda-toolkit

Download to your "Download" directory the source from https://www.mersenneforum.org/mfaktc/mfaktc-0.21/

Code:

cd ~/Downloads/
gunzip mfaktc-0.21.tar.gz
tar -xvf mfaktc-0.21.tar
cd mfaktc-0.21/src
make

storm5510 · 2019-12-09, 17:58

Quote:

Originally Posted by paulunderwood

You can compile the source. This how...

Make sure "non-free" is ticked in aptitude. Then:

Code:

sudo apt-get update
sudo apt-get install build-essential m4 libcudart10.1 nvidia-cuda-dev nvidia-cuda-toolkit

Download to your "Download" directory the source from https://www.mersenneforum.org/mfaktc/mfaktc-0.21/

Code:

cd ~/Downloads/
gunzip mfaktc-0.21.tar.gz
tar -xvf mfaktc-0.21.tar
cd mfaktc-0.21/src
make

"Make sure "non-free" in ticked in the aptitude..." I suppose this is something I will see along the line? If so, then this looks very simple. I didn't realize a compiler was incorporated into Linux, regardless of source. Mine is Ubuntu.

2019-11-01, 06:14	#3224
MrRepunit Mar 2011 Germany 3×31 Posts	Introducing gr-mfaktc, a CUDA siever for generalized repunits Hi all, just want to announce here in this thread that I finished the generalized repunits version of mfaktc, the long wished for generalization of my base 10 repunits mfaktc variant. It supports only positive bases (b>=2). I did not want to hijack this thread, so I created my own: https://www.mersenneforum.org/showthread.php?t=24901 Feel free to test it.

2019-11-11, 21:09	#3225
ixfd64 Bemusing Prompter "Danny" Dec 2002 California 5×479 Posts	Is there an official mfaktc repository somewhere? I found a repository on GitHub, but it was last updated in 2015 and doesn't seem to be managed by Oliver. Last fiddled with by ixfd64 on 2019-11-11 at 21:09

2019-12-09, 14:55	#3233
paulunderwood Sep 2002 Database er0rr 2×3²×11×19 Posts	You can compile the source. This how... Make sure "non-free" is ticked in aptitude. Then: Code: sudo apt-get update sudo apt-get install build-essential m4 libcudart10.1 nvidia-cuda-dev nvidia-cuda-toolkit Download to your "Download" directory the source from https://www.mersenneforum.org/mfaktc/mfaktc-0.21/ Code: cd ~/Downloads/ gunzip mfaktc-0.21.tar.gz tar -xvf mfaktc-0.21.tar cd mfaktc-0.21/src make

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2019-12-09, 01:19	#3229
storm5510 Random Account Aug 2009 2²×3×163 Posts	For about 10 days, I have been trying to get the Linux version of mfaktc to run on my Ubuntu system. It tells me it cannot find a specific library, libcurart.so.6.5. This is a CUDA65 version. It was the only one I could find which had all its pieces. I have tried moving the library around, as well as placing it in the same folder as mfaktc. No success. It seems sort of odd that a Linux executable would have a ".exe" extension.