Message boards :
Number crunching :
PARI stack overflow
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Author | Message |
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Send message Joined: 15 Apr 12 Posts: 3 Credit: 1,032,575 RAC: 0 |
Seven hours of crunching time down the drain... :'( Task 2367768 ended with a compute error. Following is included in the stderr output: *** the PARI stack overflows ! current stack size: 150000000 (143.051 Mbytes) [hint] you can increase GP stack with allocatemem() *** Error in the PARI system. End of program. Anything to worry about? MarkR |
Send message Joined: 8 Jul 11 Posts: 1318 Credit: 403,944,358 RAC: 288,751 |
Seven hours of crunching time down the drain... :'( Sorry about that. Nothing to worry about. This is a flaw in the pari number factoring algorithm, and happens when one factor in the number field discriminant is extremely large. It's a relatively rare event, but when it happens, it requires me to run the WU separately using a different factoring algorithm (one that takes about twice as long, otherwise I would use it as the default algorithm). I haven't seen this problem in a long time, but this latest batch of WUs has a very large bound. So I will need to start monitoring the results more closely. |
Send message Joined: 15 Apr 12 Posts: 3 Credit: 1,032,575 RAC: 0 |
Sorry about that. Nothing to worry about... Thanks a lot for the feedback, Eric. I don't mind a little "wasted crunching" if things like this are relatively uncommon. Crunching on... :-) MarkR |