PrimeGrid
Please visit donation page to help the project cover running costs for this month

Toggle Menu

Join PrimeGrid

Returning Participants

Community

Leader Boards

Results

Other

drummers-lowrise
1) Message boards : Generalized Fermat Prime Search : Genefer 3.3.0 fails to detect primes on Linux? (Message 94222)
Posted 1550 days ago by surt91
Ok, it really was the driver. After a downgrade it works.

So thanks for the fast reply and possibly saving my hardware!
2) Message boards : Generalized Fermat Prime Search : Genefer 3.3.0 fails to detect primes on Linux? (Message 94215)
Posted 1550 days ago by surt91
I noticed a GFN 16 task, which would run for over 10 minutes and
resetted itself somehow.
This WU: https://www.primegrid.com/workunit.php?wuid=477877998
(In an attempt to 'fix' it, I caused the calculation error)

When running the test manually the output is this:

$./primegrid_genefer_3_3_0_3.12_x86_64-pc-linux-gnu__OCLcudaGFN16 -q 1948010^65536+1 ./primegrid_genefer_3_3_0_3.12_x86_64-pc-linux-gnu__OCLcudaGFN16: /opt/cuda/lib64/libOpenCL.so.1: no version information available (required by ./primegrid_genefer_3_3_0_3.12_x86_64-pc-linux-gnu__OCLcudaGFN16) geneferocl 3.3.0-1 (Linux/OpenCL/64-bit) Supported transform implementations: ocl ocl3 ocl4 ocl5 Copyright 2001-2016, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2016, Iain Bethune Genefer is free source code, under the MIT license. Command line: ./primegrid_genefer_3_3_0_3.12_x86_64-pc-linux-gnu__OCLcudaGFN16 -q 11948010^65536+1 Priority change succeeded. Testing 11948010^65536+1... Using OCL4 transform Running on platform 'NVIDIA CUDA', device 'GeForce GTX 970', version 'OpenCL 1.2 CUDA' and driver '364.16'. Resuming 11948010^65536+1 from a checkpoint (1540767 iterations left) Estimated time remaining for 11948010^65536+1 is 0:03:43 Testing 11948010^65536+1... 65536 steps to go (0:00:09 remaining) maxErr exceeded for 11948010^65536+1, 1.0000 > 0.4500 during final check Errors occurred for all available transform implementations


I then tried it on a Windows install where the following output is generated:

> primegrid_genefer_3_3_0_3.12_windows_intelx86__OCLcudaGFN16.exe -q "11948010^65536+1" geneferocl 3.3.0-1 (Windows/OpenCL/32-bit) Supported transform implementations: ocl ocl3 ocl4 ocl5 Copyright 2001-2016, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2016, Iain Bethune Genefer is free source code, under the MIT license. Command line: primegrid_genefer_3_3_0_3.12_windows_intelx86__OCLcudaGFN16.exe -q 11948010^65536+1 Priority change succeeded. Testing 11948010^65536+1... Using OCL4 transform Running on platform 'NVIDIA CUDA', device 'GeForce GTX 970', version 'OpenCL 1.2 CUDA' and driver '361.75'. Starting initialization... Initialization complete (0.183 seconds). Estimated time remaining for 11948010^65536+1 is 0:04:07 11948010^65536+1 is a probable prime. (463818 digits) (err = 0.0000) (time = 0:0 3:59) 18:48:55


Well, seems like I found a prime, but there is some bug in the Linux
program, that prevented reporting it.

I hope this is the right place for this bug report.
[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2020 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 1.17, 1.34, 1.44
Generated 15 Jul 2020 | 11:19:38 UTC