mfaktc: a CUDA program for Mersenne prefactoring

[chalsall]

Originally Posted by storm5510

There are times when I would like to take it out and throw it as far as I can. It is not modular. ... All of it needs to be in a much larger case.

Except when going rack mount... If you have to "own the kit" I always advise going serious COTS.

Commercial Off The Shelf. COTS. It's not just an acronym. It's a way of taking control of one's own reality.

Thought experiment: Can you send someone down to buy a replacement UPS / Case / PSU / MB / RAM / CPU / GPU / HDD / SSD etc et al from a local supplier that will repair the proprietary kit you're currently running in a mission-critical role within twenty minutes?

Sadly... Most likely no... ~ 2 % probability using my own heuristics.

Can you, if you need to, build a local compute environment within a day? From bare parts, and bare metal? From a local supplier?

Almost certainly. I know young people who build their own computers. From parts, admittidely, but it's not all that hard to do.

@All... Please forgive me for this rant, but I am *so* tired of people coming to me saying "My computer has stopped working!!!!! I don't know what to do!!! Can you help me??? Please!?!?!

Me: "No problem. It's just a machine; we rebuild it. Where are your backups?

4thWall: That's where the panic, and the interesting conversations, usually begin... 9^)

[storm5510]

Originally Posted by chalsall

Except when going rack mount... If you have to "own the kit" I always advise going serious COTS.

Commercial Off The Shelf. COTS. It's not just an acronym. It's a way of taking control of one's own reality.

Thought experiment: Can you send someone down to buy a replacement UPS / Case / PSU / MB / RAM / CPU / GPU / HDD / SSD etc et al from a local supplier that will repair the proprietary kit you're currently running in a mission-critical role within twenty minutes?

Sadly... Most likely no... ~ 2 % probability using my own heuristics.

Can you, if you need to, build a local compute environment within a day? From bare parts, and bare metal? From a local supplier?

Almost certainly. I know young people who build their own computers. From parts, admittidely, but it's not all that hard to do.

@All... Please forgive me for this rant, but I am *so* tired of people coming to me saying "My computer has stopped working!!!!! I don't know what to do!!! Can you help me??? Please!?!?!

Me: "No problem. It's just a machine; we rebuild it. Where are your backups?

4thWall: That's where the panic, and the interesting conversations, usually begin... 9^)

Can I send somebody...? No. The economics do not work at this time. The same would apply to a local shop. Nothing I have or run is "critical."

Your reference to "backups" is a bit fuzzy. I have boot-drive image files of everything on an external drive. Those things are not cross compatible, as in SSD to HDD or the reverse.

I have a small supply of extra parts. This includes another case the same size. It is from an old Dell my sister had prior to 2010. I need to give it to the local scrap metal collector. It is all proprietary on the inside.

Had I known my writing of a more recent flavor of mfaktc was going to cause so much hubbub, I would not have mentioned it. The one I am running now, I think it was the first to be referred to as "2047."

I did a drive format and reload of W10 v21H1 two days ago. The previous setup had been running, with multiple updates, since early 2019 when I installed a Samsung SSD. It was a mess. Screen artifacts and things I had not used in years. It was past time to do that.

Nothing I wrote in my initial comment was meant to be a complaint, so please do not take it as such.

[chalsall]

Originally Posted by storm5510

Can I send somebody...? No. The economics do not work at this time. The same would apply to a local shop. Nothing I have or run is "critical."

What about your main workstation? Is it a laptop? When was the last time you "hot desked"?

To reflect a little bit, if I may...

I know people who run proprietary HP, Dell, etc et al desktops. Because they're cheap and small. They run great for about a year or so. The owner becomes dependent upon it. And then it /might/ fail. At some random time...

And iff it fails all hell breaks loose....

TL;DR: Be in control of what you are dependent upon.

[storm5510]

Originally Posted by chalsall

What about your main workstation? Is it a laptop? When was the last time you "hot desked"?

To reflect a little bit, if I may...

I know people who run proprietary HP, Dell, etc et al desktops. Because they're cheap and small. They run great for about a year or so. The owner becomes dependent upon it. And then it /might/ fail. At some random time...

And iff it fails all hell breaks loose....

TL;DR: Be in control of what you are dependent upon.

My primary is an i7 desktop I put together myself in 2018.

I have two HP workstations which I bought from my former workplace. Both are about a decade old. One I have had since 2016. It has the appearance of having sat under somebody's desk. Not a mark on it anywhere. The other is a bit rough. Its front USB ports are basically worn out making it hard to maintain a connection. The back ones are fine. I have a short extension cable plugged into one on the back and ending under the monitor. I use that for USB drives. Excellent connection. It is my Ubuntu box, and it runs alright.

No way would I use a laptop for a primary system. I have one though, an old one. When I started all this in trade-school in 1988, desktops were all I ever used. Monochrome monitors, no mouse, and booted from a 5 1/4" floppy drive. No HD's in any of them. They were all IBM PC's with 640K of RAM. Imagine running AutoCAD with something like that. They did. The pointing device was a 12" square flat thing with a grid on it. I would run something, similar to a mouse, over the board. It had a magnifying glass on it with crosshairs. Two buttons as I recall. I cannot remember the proper name for it.

[kriesel]

Originally Posted by storm5510

The pointing device was a 12" square flat thing with a grid on it. I would run something, similar to a mouse, over the board. It had a magnifying glass on it with crosshairs. Two buttons as I recall. I cannot remember the proper name for it.

Digitizing tablet. One of our CAD specialists made a customized menu for a different 2D computer aided drafting program, with 13mm square targets for all the supported options. He could hit the ones he wanted without even looking away from the screen, on an 11.7" square active area Tektronix 4957 tablet with 4-button cursor puck. We printed out customized color tablet menus on a multipen Calcomp plotter, and tucked them under clear plastic overlays, both taped down to the tablets at the corners.

[rebirther]

Some download links are broken:

https://download.mersenne.ca/mfaktc/mfaktc-0.21

Suggested downloads (Windows) table is affected --> mfaktc/mfaktc-0.21

The bold font in links is missing

Question:

Is is possible to compile the app with CUDA12 for 4xxx cards or is there no speedup?

[James Heinrich]

Originally Posted by rebirther

Some download links are broken:
https://download.mersenne.ca/mfaktc/mfaktc-0.21
Suggested downloads (Windows) table is affected --> mfaktc/mfaktc-0.21

Thanks, fixed.

[lalera]

hi,
here is mfaktc v0.21 linux cuda12
a version for windows i can not compile
i can not test it with a rtx4090 because i have only a gtx1050ti

[rebirther]

Originally Posted by lalera

hi,
here is mfaktc v0.21 linux cuda12
a version for windows i can not compile
i can not test it with a rtx4090 because i have only a gtx1050ti

Can you also include the libcudart.so.12.0 file?

[lalera]

Originally Posted by rebirther

Can you also include the libcudart.so.12.0 file?

hi,

[rebirther]

Originally Posted by lalera

hi,

Thx! The app is installed on the project server, lets see if its faster.