Planning & Coordination for 2,2330L - Page 12

VBCurtis · 2019-05-23, 21:45

Client tests are in progress. I have 3 clients running, swellman 1, ET_ tested successfully but won't be running until some other work finishes.

Carlos suffered a crash and wasn't successful. He had some trouble getting a CADO install working, and I'm afraid those troubles continue.

Here's the error saved to the CADO server log:

Code:

Error:Lattice Sieving: Program run on carlos-VirtualBox.1a213bfb failed with exit code 134
Error:Lattice Sieving: Stderr output (last 10 lines only) follow (stored in file /home/vbcurtis/ssd/cado-nfs/2330Ljob/2330L.c207.upload/2330L.c207_sieving_8515000-8516000.ku18221t.stderr0):
Error:Lattice Sieving:  code BUG() : condition rc == 0 failed in malloc_aligned at /home/carlos/Documents/cado-nfs-2.3.0/utils/memory.c:188 -- Abort
Error:Lattice Sieving:  Aborted (core dumped)
Error:Lattice Sieving:
Info:Lattice Sieving: Marking workunit 2330L.c207_sieving_8515000-8516000 as not ok (0.2% => ETA Mon Aug 14 09:56:05 2023)
Info:Lattice Sieving: Resubmitting workunit 2330L.c207_sieving_8515000-8516000 as 2330L.c207_sieving_8515000-8516000#2

I lack coding experience, so I feel a bit helpless to troubleshoot this. We confirmed that he has 14GB allocated to the VM, and compiled with the large-prime > 32 flag set as directed in post #45. Swellman is also running in VM, so linux-upon-windows is unlikely to be the culprit directly.
Anyone with ideas?

DukeBG · 2019-05-24, 05:36

Dunno how much help it will be, but that error message came up in cado nfs thread before. It seems like the program is unable to allocate a big enough continuous chunk of memory even though total free memory is available. Maybe shutting down other things running on the VM and rebooting might help.

pinhodecarlos · 2019-05-24, 08:20

Quote:

Originally Posted by DukeBG

Dunno how much help it will be, but that error message came up in cado nfs thread before. It seems like the program is unable to allocate a big enough continuous chunk of memory even though total free memory is available. Maybe shutting down other things running on the VM and rebooting might help.

VM has a clean Ubuntu install, I did increase memory to VM as much possible as I could but CADO just stalls Linux.

lukerichards · 2019-05-24, 09:10

Quote:

Originally Posted by pinhodecarlos

VM has a clean Ubuntu install, I did increase memory to VM as much possible as I could but CADO just stalls Linux.

I used to use Ubuntu for everything but have found that Debian runs GMP a lot better with fewer hiccoughs. As you're running a clean install, maybe it might be worth trying Debian?

R.D. Silverman · 2019-05-24, 20:18

Quote:

Originally Posted by lukerichards

I used to use Ubuntu for everything but have found that Debian runs GMP a lot better with fewer hiccoughs. As you're running a clean install, maybe it might be worth trying Debian?

Note that Sam has reserved 2,1063+, 2,1072+, 2,1076+ for NFS@Home.....

swellman · 2019-05-24, 20:43

Quote:

Originally Posted by R.D. Silverman

YoYo has finished ECM on 2,2330L and 2,2330M, but nothing else is queued.
Will 2,2210M/2,1165+ be added?

I’ve been trying to load these two Cunninghams into Yoyo’s queue but it doesn’t seem to be taking right now. I’ll try again next week.

pinhodecarlos · 2019-05-25, 20:21

What’s the lightest Linux distribution? I’ll install it and try CADO again.

Uncwilly · 2019-05-25, 20:49

Quote:

Originally Posted by pinhodecarlos

What’s the lightest Linux distribution? I’ll install it and try CADO again.

Years ago there were some that fit on a 3.5" floppy.

DSL http://www.damnsmalllinux.org
10 small distros https://itsfoss.com/lightweight-linux-beginners/

VBCurtis · 2019-05-25, 20:58

Quote:

Originally Posted by pinhodecarlos

What’s the lightest Linux distribution? I’ll install it and try CADO again.

A really light linux install isn't going to have Python 2 and 3, and isn't likely to have the compiler all set up for you. Sounds like a layer cake of headaches!

The error was mentioned as possibly a matter of being unable to allocate contiguous memory (as opposed to not enough memory). So, perhaps you could restart machine, boot VM with, say, 13GB allocated, and then try CADO? Ideally, all 13GB would be allocated together, and CADO would not crash. I believe swellman had a successful test in a VM, but I don't know if the host machine has 16GB or something more.

I hope you get it working!

pinhodecarlos · 2019-05-25, 21:05

Yesterday I did uninstall VM since from the beginning I thought. Ubuntu was very heavy for my machine although I’ve run it in the past on the same machine and I was not aware of this being so slow. Anyway, I’ll try one of those distros, one with GUI. Thank you both.

BTW, VM limits the memory used up to 13.7GB of the 16GB I think or 14.7GB.

RichD · 2019-05-25, 22:21

That should be enough. My testing shows memory use of 8.9GB (via "top"). Don't try to work around but follow the instructions precisely to have a good build. Not sure of all the libraries needed but should include the most common ones for large integer factorization. Like m4, automake, gcc, python_3, gmp, and others that may not be included in a virgin install.

2019-05-25, 21:05	#131
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3·17·97 Posts	Yesterday I did uninstall VM since from the beginning I thought. Ubuntu was very heavy for my machine although I’ve run it in the past on the same machine and I was not aware of this being so slow. Anyway, I’ll try one of those distros, one with GUI. Thank you both. BTW, VM limits the memory used up to 13.7GB of the 16GB I think or 14.7GB. Last fiddled with by pinhodecarlos on 2019-05-25 at 21:07

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2019-05-24, 05:36	#123
DukeBG Mar 2018 10000001₂ Posts	Dunno how much help it will be, but that error message came up in cado nfs thread before. It seems like the program is unable to allocate a big enough continuous chunk of memory even though total free memory is available. Maybe shutting down other things running on the VM and rebooting might help.

2019-05-25, 20:21	#128
pinhodecarlos "Carlos Pinho" Oct 2011 Milton Keynes, UK 3×17×97 Posts	What’s the lightest Linux distribution? I’ll install it and try CADO again.

2019-05-25, 22:21	#132
RichD Sep 2008 Kansas 17×199 Posts	That should be enough. My testing shows memory use of 8.9GB (via "top"). Don't try to work around but follow the instructions precisely to have a good build. Not sure of all the libraries needed but should include the most common ones for large integer factorization. Like m4, automake, gcc, python_3, gmp, and others that may not be included in a virgin install.