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1) Message boards : Problems and Help : Finishing within deadline impossible for new WU, what should I do? (Message 148618)
Posted 119 days ago by Profile JamesProject donor
However I never encountered a project offering grace periods 4 times longer than original due date minus send date

Now you have! This post describes the deadline extension system at PrimeGrid: https://www.primegrid.com/forum_thread.php?id=6404&nowrap=true#87302

If things haven't changed since then (I don't think they have), the maximum deadline is 4x the original deadline or an additional 30 days, whichever is longer (up to a maximum of 250 days)
2) Message boards : General discussion : Suggestion: Team name in team 'info page' (Message 147669)
Posted 144 days ago by Profile JamesProject donor
If I have a userId, say 918937, I can build a URL like
http://www.primegrid.com/show_user.php?userid=918937
and get info about such user (user name for one thing, in the header row for the table in the middle of the page: Account information for xxxxxx).


I remember when a very similar change was implemented (adding username to user pages, perhaps because I requested it over on Discord).
I think a team name on the team page would be a nice addition. Let me know what you think (or yell at me if the change breaks anything)
3) Message boards : Number crunching : Good Riddance 2020! Challenge (Message 147501)
Posted 151 days ago by Profile JamesProject donor
Shiny new hardware is always nice to have :)

Current PPS-DIV FFT size is 480K
4) Message boards : Number crunching : Is turning on hyper threading better if you still assign number of tasks to only pysical cores? (Message 147189)
Posted 163 days ago by Profile JamesProject donor
These things vary from system to system, from OS to OS, and from subproject to subprojects; only way to know for sure is to try it out for yourself.

That being said, there typically isn't that great of a difference IIRC.
5) Message boards : Generalized Fermat Prime Search : Genefer 3.3.5 testing (Message 146101)
Posted 190 days ago by Profile JamesProject donor
linux64 SSE2i

I think the times are wrong for 3638450^524288+1 (maybe because it was unexpectedly terminated?)
The result seems fine.

3638450^524288+1
daohe@daohe-XPS-15-9570:~/Documents/genefer335test/s3$ ../gfn3.3.5 -q "3638450^524288+1" -x sse2i genefer 3.3.5.1 (CPU/Linux/64-bit/gcc-7.5.0/BOINC-7.17.0) Copyright 2001-2020, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2018, Iain Bethune Genefer is free source code, under the MIT license. Supported transform implementations: fma avx sse4 sse2 fmai avxi sse4i sse2i Command line: ../gfn3.3.5 -q 3638450^524288+1 -x sse2i Low priority change succeeded. Testing 3638450^524288+1... Using sse2i transform Resuming 3638450^524288+1 from a checkpoint (1840338 iterations left) Estimated time remaining for 3638450^524288+1 is 5:02:00 3638450^524288+1 is a probable prime. (3439810 digits) (err = 0.0039) (time = 28:36:32) 20:46:04


11081688^262144+1
daohe@daohe-XPS-15-9570:~/Documents/genefer335test/s2$ ../gfn3.3.5 -q "11081688^262144+1" -x sse2i genefer 3.3.5.1 (CPU/Linux/64-bit/gcc-7.5.0/BOINC-7.17.0) Copyright 2001-2020, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2018, Iain Bethune Genefer is free source code, under the MIT license. Supported transform implementations: fma avx sse4 sse2 fmai avxi sse4i sse2i Command line: ../gfn3.3.5 -q 11081688^262144+1 -x sse2i Low priority change succeeded. Testing 11081688^262144+1... Using sse2i transform Starting initialization... Initialization complete (0.565 seconds). Estimated time for 11081688^262144+1 is 11:20:00 11081688^262144+1 is a probable prime. (1846702 digits) (err = 0.0156) (time = 12:47:47) 04:56:53


80146408^131072+1
daohe@daohe-XPS-15-9570:~/Documents/genefer335test/s1$ ../gfn3.3.5 -q "80146408^131072+1" -x sse2i genefer 3.3.5.1 (CPU/Linux/64-bit/gcc-7.5.0/BOINC-7.17.0) Copyright 2001-2020, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2018, Iain Bethune Genefer is free source code, under the MIT license. Supported transform implementations: fma avx sse4 sse2 fmai avxi sse4i sse2i Command line: ../gfn3.3.5 -q 80146408^131072+1 -x sse2i Low priority change succeeded. Testing 80146408^131072+1... Using sse2i transform Starting initialization... Initialization complete (0.211 seconds). Estimated time for 80146408^131072+1 is 2:49:00 80146408^131072+1 is a probable prime. (1035978 digits) (err = 0.1875) (time = 3:50:20) 19:58:59


98752904^65536+1
daohe@daohe-XPS-15-9570:~/Documents/genefer335test/s0$ ../gfn3.3.5 -q "98752904^65536+1" -x sse2i genefer 3.3.5.1 (CPU/Linux/64-bit/gcc-7.5.0/BOINC-7.17.0) Copyright 2001-2020, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2018, Iain Bethune Genefer is free source code, under the MIT license. Supported transform implementations: fma avx sse4 sse2 fmai avxi sse4i sse2i Command line: ../gfn3.3.5 -q 98752904^65536+1 -x sse2i Low priority change succeeded. Testing 98752904^65536+1... Using sse2i transform Starting initialization... Initialization complete (0.057 seconds). Estimated time for 98752904^65536+1 is 0:37:20 98752904^65536+1 is a probable prime. (523931 digits) (err = 0.1875) (time = 0:57:28) 17:05:26
6) Message boards : Number crunching : Any way to force NOT reporting results immediately? (Message 146033)
Posted 191 days ago by Profile JamesProject donor
Although I'm not certain this will work, could you try putting in your app_config.xml
<report_results_immediately>0</report_results_immediately>
instead of
<report_results_immediately/>
7) Message boards : Generalized Fermat Prime Search : Genefer 3.3.5 testing (Message 146014)
Posted 192 days ago by Profile JamesProject donor
sse2i tests will be done soon

I take this back. Something in the kitchen tripped the RCD and the machine I was running the tests on was not on an UPS.

EDIT: ah genefer checkpoints. The tests will be done soon :)
8) Message boards : Generalized Fermat Prime Search : Genefer 3.3.5 testing (Message 146004)
Posted 192 days ago by Profile JamesProject donor
linux64 sse4i. These took longer than I expected; sse2i tests will be done soon

root@thisisapi:~/genefer-3_3_5-test# ./gfn3.3.5 -q "98752904^65536+1" -x sse4i genefer 3.3.5.1 (CPU/Linux/64-bit/gcc-7.5.0/BOINC-7.17.0) Copyright 2001-2020, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2018, Iain Bethune Genefer is free source code, under the MIT license. Supported transform implementations: avx sse4 sse2 avxi sse4i sse2i Command line: ./gfn3.3.5 -q 98752904^65536+1 -x sse4i Low priority change succeeded. Testing 98752904^65536+1... Using sse4i transform Starting initialization... Initialization complete (0.144 seconds). Estimated time for 98752904^65536+1 is 0:47:30 98752904^65536+1 is a probable prime. (523931 digits) (err = 0.1875) (time = 0:46:21) 12:24:06 root@thisisapi:~/genefer-3_3_5-test# ./gfn3.3.5 tests -x sse4i genefer 3.3.5.1 (CPU/Linux/64-bit/gcc-7.5.0/BOINC-7.17.0) Copyright 2001-2020, Yves Gallot Copyright 2009, Mark Rodenkirch, David Underbakke Copyright 2010-2012, Shoichiro Yamada, Ken Brazier Copyright 2011-2014, Michael Goetz, Ronald Schneider Copyright 2011-2018, Iain Bethune Genefer is free source code, under the MIT license. Supported transform implementations: avx sse4 sse2 avxi sse4i sse2i Command line: ./gfn3.3.5 tests -x sse4i Low priority change succeeded. Start test of file 'tests' - 14:09:05 Testing 80146408^131072+1... Using sse4i transform Starting initialization... Initialization complete (0.319 seconds). Estimated time for 80146408^131072+1 is 3:15:00 80146408^131072+1 is a probable prime. (1035978 digits) (err = 0.1875) (time = 3:17:10) 17:26:15 Testing 11081688^262144+1... Using sse4i transform Starting initialization... Initialization complete (0.790 seconds). Estimated time for 11081688^262144+1 is 12:00:00 11081688^262144+1 is a probable prime. (1846702 digits) (err = 0.0156) (time = 12:16:19) 05:42:34 Testing 3638450^524288+1... Using sse4i transform Starting initialization... Initialization complete (2.538 seconds). Estimated time for 3638450^524288+1 is 47:10:00 3638450^524288+1 is a probable prime. (3439810 digits) (err = 0.0039) (time = 53:54:45) 11:37:19 Test of file 'tests' completed - 11:37:19
9) Message boards : Generalized Fermat Prime Search : Genefer 3.3.5 testing (Message 145800)
Posted 195 days ago by Profile JamesProject donor
It seems no one is running linux64 sse2i and sse4i. I'll take those.

Eventually, when the above is done, I'll contemplate genefer_linux32...
10) Message boards : Number crunching : LLR2 installed on all big LLR projects (Message 145281)
Posted 208 days ago by Profile JamesProject donor
Thanks for this speeding up for the double check. First time I did not trust it. Where can I see how does it work?

If you're on discord: https://canary.discord.com/channels/357493752434130944/357550381431259136/745508916561051678

Otherwise, Pavel has infographics that resumes how the fast double-check works:
https://raw.githubusercontent.com/patnashev/llr2/master/demo/ProofInfo.png
https://raw.githubusercontent.com/patnashev/llr2/master/demo/ProofInfoP.png
https://raw.githubusercontent.com/patnashev/llr2/master/demo/ProofMagic.png

I do suggest you read the explanation on discord. Pavel wrote quite a bit of explanation there.


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