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-   -   Can someone run a couple of poly searches for me? (https://www.mersenneforum.org/showthread.php?t=16710)

schickel 2012-04-10 08:51

Can someone run a couple of poly searches for me?
 
I was hoping someone would have the time and resources to run a couple of poly searches for me. (Believe it or not, I decided to buy a GPU to run some projects on, but didn't realize msieve uses Nvidia rather than the ATI that I bought....it pays to check first!)

The first is a c151 from 572000:i3094:[code]2119140345775000108180962800888015075769919837681286337336416586905122205436924899536701602539379676667489862940462606633001801302615803564132806646527[/code]The second is a c153 from 363270:i1759[code]639818713524495629538702644398102175871519663684229775565480903998487599472886004787307388009209457487386090128633004519078074161082111880734247598519847[/code] [SIZE="1"](The second one is different from the one at the end of [URL="http://factordb.com/sequences.php?se=1&aq=363270&action=last20&fr=0&to=100"]363270[/URL] in the [URL="http://www.mersenneforum.org/showpost.php?p=290546&postcount=1367"]DB[/URL].....)[/SIZE]

[EDIT: I'm hoping I can do them a little faster than the last couple of c15x jobs I did if I have a (more) decent poly.....]

poily 2012-04-10 15:37

Try this one for the c153.
[CODE]n: 639818713524495629538702644398102175871519663684229775565480903998487599472886004787307388009209457487386090128633
deg: 5
skew: 523854
c5: 34756680
c4: 5266016511076
c3: -29995600624358361218
c2: -360079237313642767836789
c1: 2964946819160389790182814124390
c0: -63006984115844908195013033867842800
Y1: 428681183752426013
Y0: -112980548970114676128587090489
# m: 5131382905518585018495790672707506529455054822008532962260546524623400134994083111014129201125322601830748977034
# norm: 1.558301e+21
# alpha: -6.725791e+00
# murphy_e: 3.524674e-12[/CODE]

schickel 2012-04-10 17:46

[QUOTE=poily;296035]Try this one for the c153.
[CODE]n: 639818713524495629538702644398102175871519663684229775565480903998487599472886004787307388009209457487386090128633
deg: 5
skew: 523854
c5: 34756680
c4: 5266016511076
c3: -29995600624358361218
c2: -360079237313642767836789
c1: 2964946819160389790182814124390
c0: -63006984115844908195013033867842800
Y1: 428681183752426013
Y0: -112980548970114676128587090489
# m: 5131382905518585018495790672707506529455054822008532962260546524623400134994083111014129201125322601830748977034
# norm: 1.558301e+21
# alpha: -6.725791e+00
# murphy_e: 3.524674e-12[/CODE][/QUOTE]Thanks! I'll give that a shot after I clear my current job out.

Gimarel 2012-04-11 08:24

Here are some Polys for the c151 with Murphy above 5e-12. I didn't do any testsieving so I don't know which one is the best.

[CODE]# norm 1.436519e-14 alpha -6.373245 e 5.333e-12 rroots 5
skew: 826298.12
c0: 20845566678164297365120804561756705
c1: 183294175802435976662843101867
c2: -2477653833691984307550241
c3: -1500710162407695595
c4: 3387135843768
c5: 303240
Y0: -93083802748178365489228305348
Y1: 50774633142117043
# norm 1.418318e-14 alpha -6.930302 e 5.289e-12 rroots 5
skew: 1835730.88
c0: 82815140119816432465056299833490720
c1: 5681578590449662888712750738744
c2: 8412717872557527052674616
c3: -3334831675722595883
c4: -2076031905768
c5: 402696
Y0: -87950721685558702461613852347
Y1: 574803280795475831
# norm 1.411744e-14 alpha -5.548414 e 5.283e-12 rroots 5
skew: 886423.30
c0: -26555535096681986150415217156944000
c1: 102045801315230312254936098516
c2: 1173381052126279136450844
c3: 830408978575928693
c4: -1463848987804
c5: 204516
Y0: -100713801366198969390446374939
Y1: 405376078854585133
# norm 1.353711e-14 alpha -6.128619 e 5.194e-12 rroots 3
skew: 1385667.62
c0: -75486620634676097091282234634648275
c1: 1274714303067357415392086545455
c2: -51674158425751281959109
c3: -1946356708187504659
c4: -850365410344
c5: 204516
Y0: -100713558166090349607205438318
Y1: 405376078854585133
# norm 1.373296e-14 alpha -6.193639 e 5.070e-12 rroots 5
skew: 1474887.67
c0: 1700940406413034553879044098357857028
c1: 1959433932728088480876706655796
c2: -3287162790508621978788219
c3: -2454677018300970782
c4: 1993355023160
c5: 302640
Y0: -93120714196329552804201303461
Y1: 61879896886832137
# norm 1.285081e-14 alpha -5.869421 e 5.031e-12 rroots 3
skew: 1336775.79
c0: 12555211792437348741530435237557365
c1: 1127439682400476824013798698447
c2: 816538447743226651810659
c3: -1273883666325951763
c4: -1032932753224
c5: 204516
Y0: -100713630540313963989416743606
Y1: 405376078854585133
# norm 1.303593e-14 alpha -6.474448 e 5.021e-12 rroots 3
skew: 1761452.94
c0: -1378929369151656833474677995565906608
c1: 2383742248887901356908810518272
c2: 3092242137603604808187317
c3: -1955840148157053758
c4: -1767332316010
c5: 107100
Y0: -114624617579907696437145817979
Y1: 307875930233096759
# norm 1.318960e-14 alpha -7.214836 e 5.017e-12 rroots 3
skew: 1557188.76
c0: 40721056008484718287780464636378120
c1: 3716708849833597523245141215698
c2: 1149604206475581903526983
c3: -3386881447048054356
c4: -3606976735796
c5: 104880
Y0: -115105223808476848502333242393
Y1: 62628908437674203
[/CODE]

schickel 2012-04-11 11:02

[QUOTE=Gimarel;296105]Here are some Polys for the c151 with Murphy above 5e-12. I didn't do any testsieving so I don't know which one is the best.[/QUOTE]Thank you for that run. I'll have to decide which one I want to run first; I put them both on hold so long ago, I don't remember which has a higher priority....

schickel 2012-04-12 13:06

[QUOTE=poily;296035]Try this one for the c153.[/QUOTE]Again, thanks for the search. I'm going to do the c153 first, since 363270 is larger, so if the next line needs ECM, I can do it while the c151 is running.....

schickel 2012-04-26 12:25

[QUOTE=poily;296035]Try this one for the c153.
[CODE]n: 639818713524495629538702644398102175871519663684229775565480903998487599472886004787307388009209457487386090128633
deg: 5
skew: 523854
c5: 34756680
c4: 5266016511076
c3: -29995600624358361218
c2: -360079237313642767836789
c1: 2964946819160389790182814124390
c0: -63006984115844908195013033867842800
Y1: 428681183752426013
Y0: -112980548970114676128587090489
# m: 5131382905518585018495790672707506529455054822008532962260546524623400134994083111014129201125322601830748977034
# norm: 1.558301e+21
# alpha: -6.725791e+00
# murphy_e: 3.524674e-12[/CODE][/QUOTE][code]Thu Apr 26 05:20:33 2012 matrix is 3478570 x 3478796 (1017.9 MB) with weight 261412505 (75.14/col)
Thu Apr 26 05:20:33 2012 sparse part has weight 232039396 (66.70/col)
Thu Apr 26 05:20:33 2012 using block size 21845 for processor cache size 512 kB
Thu Apr 26 05:20:54 2012 commencing Lanczos iteration (2 threads)
Thu Apr 26 05:20:54 2012 memory use: 841.8 MB
Thu Apr 26 05:22:09 2012 linear algebra at 0.0%, ETA 45h52m
Thu Apr 26 05:22:33 2012 checkpointing every 80000 dimensions[/code]

jasonp 2012-04-26 16:49

What machine is this running on? Does it actually have a 512kB L2 or do I have to mess with the cache detection code again?

Batalov 2012-04-26 19:07

Xeons regularly report this size and have a tiny block as a result.

schickel 2012-04-27 06:39

1 Attachment(s)
[QUOTE=jasonp;297459]What machine is this running on? Does it actually have a 512kB L2 or do I have to mess with the cache detection code again?[/QUOTE]Machine info from CPU-Z:

jasonp 2012-04-27 10:08

Okay, looks like the current code is correct then. AMD machines have a relatively simple way of reporting cache sizes, and Intel machines added a similar mechanism around 2010. The problem is that some Xeon machines still have trouble, as Serge has pointed out.


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