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drummers-lowrise
1) Message boards : Number crunching : Great Conjunction Challenge (Message 147210)
Posted 593 days ago by matsu_pl
A few days ago, GFN-19 was calculated with OCL3 in approx. 50 minutes (using GTX 1660 Super).
Today, GFN-19 was calculated with OCL2 and it took more than 1h 20m.
Is it going to stay like this?

Command line: ../../projects/www.primegrid.com/geneferocl_linux64_3.3.3-2 -boinc -q 4179252^524288+1 --device 0 Normal priority change failed (needs superuser privileges. Checking available transform implementations... OCL transform is past its b limit. OCL4 transform is past its b limit. OCL5 transform is past its b limit. A benchmark is needed to determine best transform, testing available transform implementations... Testing OCL2 transform... Testing OCL3 transform... Benchmarks completed (1.151 seconds). Using OCL3 transform Starting initialization... Initialization complete (1.321 seconds). Testing 4179252^524288+1... Estimated time for 4179252^524288+1 is 0:49:00 4179252^524288+1 is complete. (3471363 digits) (err = 0.0000) (time = 0:49:48)


Command line: ../../projects/www.primegrid.com/geneferocl_linux64_3.3.3-2 -boinc -q 4224654^524288+1 --device 0 Normal priority change failed (needs superuser privileges. Checking available transform implementations... OCL transform is past its b limit. OCL3 transform is past its b limit. OCL4 transform is past its b limit. OCL5 transform is past its b limit. Using OCL2 transform Starting initialization... Initialization complete (1.419 seconds). Testing 4224654^524288+1... Estimated time for 4224654^524288+1 is 1:22:00 4224654^524288+1 is complete. (3473823 digits) (err = 0.0000) (time = 1:22:39)
2) Message boards : Number crunching : Google Colab and its free GPUs (Message 137946)
Posted 912 days ago by matsu_pl
https://www.primegrid.com/workunit.php?wuid=644461755
A WU with both tasks on Google Colab.
GFN 17 low, less than 5 minutes on T4, and more than 10 minutes on P4.
3) Message boards : Number crunching : Google Colab and its free GPUs (Message 136571)
Posted 936 days ago by matsu_pl
Genefer 20 on Tesla P100, run time 7836 seconds
https://www.primegrid.com/result.php?resultid=1053705624
Genefer 20 on Tesla T4, run time 13133 seconds
https://www.primegrid.com/result.php?resultid=1054157647
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