mersenneforum.org gpuowl: runtime error
 Register FAQ Search Today's Posts Mark Forums Read

 2020-09-18, 23:42 #56 Xyzzy     Aug 2002 211916 Posts 4096MB seems to be fine. You don't get that much faster with more memory. Especially if you stall the program!
 2020-09-19, 04:19 #57 petrw1 1976 Toyota Corona years forever!     "Wayne" Nov 2006 Saskatchewan, Canada 519610 Posts YAY... and Thanks ... and FAST!!! Its running and it's a lot faster than a CPU. A 6.7566 GhzDay P-1 in under 30 minutes with a P100 GPU This would take 1 core of my 7820X 18 hours. All 8 cores of my CPU could do just over 10 per day; this GPU could do almost 50 per day. Observation: I specified B1=1,500,000 B2=30,000,000 I got Stage 1=2,164,271; Stage 2=1,460,867 primes and 2,880 (classes???) PS I added the commas for readability Observation#2: If I leave off the ,2 at the end of this worktodo.txt line B1=1500000,B2=30000000;PFactor=0,1,2,40371047,-1,74,2 I get the error 2020-09-19 04:21:44 colab 1 FFT: 128K 256:1:256 (0.00 bpw) 2020-09-19 04:21:44 colab FFT size too large for exponent (0.00 bits/word). 2020-09-19 04:21:44 colab Exiting because "FFT size too large" Last fiddled with by petrw1 on 2020-09-19 at 04:27
 2020-10-01, 23:39 #58 petrw1 1976 Toyota Corona years forever!     "Wayne" Nov 2006 Saskatchewan, Canada 10100010011002 Posts Why does it ignore worktodo lines? 2020-10-01 23:37:32 colab worktodo.txt line ignored: "B1=1500000,B2=30000000;PFactor=0,1,2,40382929,-1,74,2" Thanks Never mind, I got the new build which I understand no longer does P1 alone. Last fiddled with by petrw1 on 2020-10-01 at 23:57
2020-10-02, 01:56   #59
moebius

"CharlesgubOB"
Jul 2009
Germany

10011011102 Posts

Quote:
 Originally Posted by petrw1 Never mind, I got the new build which I understand no longer does P1 alone.
https://mersenneforum.org/showpost.p...28&postcount=1

2020-10-02, 03:56   #60
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

146478 Posts

Quote:
 Originally Posted by petrw1 2020-10-01 23:37:32 colab worktodo.txt line ignored: "B1=1500000,B2=30000000;PFactor=0,1,2,40382929,-1,74,2" Thanks Never mind, I got the new build which I understand no longer does P1 alone.
Gpuowl 7.0 is not ready yet, don't use it, per Mihai https://www.mersenneforum.org/showpo...0&postcount=44

2021-09-27, 23:15   #61
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

3·11·199 Posts

Quote:
 Originally Posted by moebius Here is the executable for colab with the libstdc files
Tried that on a new colab account, got the following as entire output of the run attempt:
./gpuowl.exe: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version GLIBCXX_3.4.26' not found (required by ./gpuowl.exe)

(edit: and I see others have hit that error too. Will try some of the posted resolution approaches at the next opportunities. If moebius or whoever were to post an updated archive file with the needed file included, that might help.)

Last fiddled with by kriesel on 2021-09-27 at 23:32

2021-09-27, 23:28   #62
chalsall
If I May

"Chris Halsall"
Sep 2002

101001001010102 Posts

Quote:
 Originally Posted by kriesel Tried that on a new colab account, got the following as entire output of the run attempt: ./gpuowl.exe: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version GLIBCXX_3.4.26' not found (required by ./gpuowl.exe)
Quoting a thread almost exactly a year ago. Why?

I was drilling down to ensure I hadn't said anything stupid in my recent posts. I came across this example of someone well trained being able to reproduce excellence (once they understood the theory of operation).

We're all actually on the same side.

Correct?

2021-09-28, 00:45   #63
Dr Sardonicus

Feb 2017
Nowhere

22·31·47 Posts

Quote:
 Originally Posted by chalsall Quoting a thread almost exactly a year ago. Why?
From my reading, I would guess it's because (my emphasis)
Quote:
 Originally Posted by kriesel Tried that [the executable for colab from the quoted post] on a new colab account, got the following as entire output of the run attempt: ./gpuowl.exe: /usr/lib/x86_64-linux-gnu/libstdc++.so.6: version GLIBCXX_3.4.26' not found (required by ./gpuowl.exe)

Last fiddled with by Dr Sardonicus on 2021-09-28 at 00:51

2021-09-28, 04:14   #64
moebius

"CharlesgubOB"
Jul 2009
Germany

11568 Posts

Quote:
 Originally Posted by kriesel If moebius or whoever were to post an updated archive file with the needed file included, that might help.)
read this post, did You copy the libstdc files to your working directory? I can make a new binary, if you tell me the path to the old repository
https://mersenneforum.org/showpost.p...7&postcount=33

Last fiddled with by moebius on 2021-09-28 at 04:20

2021-09-28, 15:06   #65
kriesel

"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest

3×11×199 Posts

Quote:
 Originally Posted by moebius did You copy the libstdc files to your working directory?
yes. libstd... missing is not the issue, libcxx version is in that case.

I tried 3 different Linux for Colab versions and hit different issues in each, finally got Fan Ming's going, although it blocks mprime on the CPU due to excessive CPU usage in gpuowl. I think that is ~V6.11-329 based on dates. It does not give a version when it runs. Purpose of the exercise was to not only get that account going, but document what's needed to clone to other accounts' Google drives without building anew on each, or at every new launch that gets a different Colab VM.

From my "building with msys2" notes, to get an old gpuowl commit, find the hash corresponding to the version desired, by matching the leading digits of the hash to the trailing digits of the gpuowl version.
For V6.11-380-g79ea0cc that's 79ea0cc29184237b24018e9396df271ec2754e97. https://github.com/preda/gpuowl/comm...df271ec2754e97

Then do similar to
Code:
git clone --branch v6 https://github.com/preda/gpuowl
cd gpuowl
git checkout 79ea0cc29184237b24018e9396df271ec2754e97
or perhaps git reset --hard 79ea0cc29184237b24018e9396df271ec2754e97`
There's more on my 3 attempts with downloaded builds in the second half of https://www.mersenneforum.org/showpo...0&postcount=7; use browser search for "build anew" to find the start of the relevant section.

Last fiddled with by kriesel on 2021-09-28 at 15:06

 2021-09-28, 21:17 #66 moebius     "CharlesgubOB" Jul 2009 Germany 10011011102 Posts GLIBCXX_3.4.26 comes with GCC 9.1.0. The gpuOwl 6.11.380 binary at https://mersenneforum.org/showpost.p...1&postcount=40 does not work for you, because the gcc version is not the same. I compiled it with gcc 9.1.0 https://gcc.gnu.org/onlinedocs/libst...anual/abi.html It should work if you install gcc 9.1.0 and then copy the needed files with a notebook https://mersenneforum.org/showpost.p...7&postcount=33 Sure it isn't the same issue like in this thread? https://mersenneforum.org/showthread...511#post555511 Last fiddled with by moebius on 2021-09-28 at 21:43

 Similar Threads Thread Thread Starter Forum Replies Last Post M344587487 GpuOwl 14 2018-12-29 08:11 preda PrimeNet 2 2017-10-07 21:32 yoyo YAFU 1 2015-01-08 07:07 ltd GMP-ECM 5 2009-10-30 13:09 D. B. Staple Factoring 11 2007-12-12 16:52

All times are UTC. The time now is 12:22.

Tue Jun 28 12:22:23 UTC 2022 up 75 days, 10:23, 1 user, load averages: 1.15, 1.15, 1.17