20120328, 08:17  #12  
Jun 2007
Moscow,Russia
7·19 Posts 
Quote:
18911778784739562144612741372843311631382033055424664965367805621. 

20120328, 08:39  #13 
Romulan Interpreter
Jun 2011
Thailand
2^{2}×7×11×29 Posts 
Is this linuxrelated?
I tried 4050 times, both numbers, from inside the yafu and from outside (cmd line), no crash, numbers split by siqs every time in few seconds. Code:
SIQS elapsed time = 21.3591 seconds. Total factoring time = 33.6402 seconds PRP38 = 12862397506386155909354558787876349793 PRP30 = 407110435562715649819424326729 starting SIQS on c65: .... SIQS elapsed time = 13.1248 seconds. Total factoring time = 20.9216 seconds PRP30 = 602353664334842419891443250441 PRP35 = 31396470054885716002527004035803981 
20120328, 09:46  #14  
Jun 2007
Moscow,Russia
85_{16} Posts 
Quote:
I have also TPC under the same OS on Core2Duo T9300 and this problem is also occured. Last fiddled with by VolMike on 20120328 at 09:47 

20120328, 13:26  #15 
"Ben"
Feb 2007
3·5·223 Posts 
Thanks for the new test case. Although I guess I forgot to mention that I fixed the bug.... and it *was* a bug. It was some sort of VonNeumannbug, in that it only manifested itself on occasional random distributions of primes during the large prime bucket sort.
Valgrind ultimately was very helpful  it eventually pointed me toward the data structure that was overflowing. It just took quite a while to actually catch the vonneumannbug in Valgrind. I hope to have v1.31 out in the next couple weeks. 
20120328, 16:55  #16 
Sep 2009
977 Posts 
Yeah, Valgrind is a great tool
clang+AddressSanitizer cuts much of the large speed penalty of Valgrind, and can detect several memory errors that Valgrind cannot; but conversely, Valgrind can detect some errors that AddressSanitizer cannot detect. 
20120409, 16:23  #17 
Jun 2007
Moscow,Russia
205_{8} Posts 
...and one more "crashing" number: 21028701588210693904788721831286708149055869664064159654556833079

20120409, 19:33  #18 
Basketry That Evening!
"Bunslow the Bold"
Jun 2011
40<A<43 89<O<88
1110000011101_{2} Posts 

20120409, 21:39  #19 
"Ben"
Feb 2007
3×5×223 Posts 

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