Message boards :
Number crunching :
The PARI stack overflows !
Message board moderation
Author | Message |
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Send message Joined: 28 Oct 11 Posts: 179 Credit: 223,811,622 RAC: 112,873 |
Eric, You might like to have a look at workunit 1022542. 7 people have attempted it so far, all ending with the same error. I've got copy number eight - any parameter I can tweak to give it the extra stack space it's asking for? N2 = 25. |
Send message Joined: 8 Jul 11 Posts: 1323 Credit: 410,843,122 RAC: 245,907 |
Thanks for reporting. Your best bet at this time is to abort that wu (I also just cancelled it so it wont be re-sent). I noticed this problem about a week ago. It seems to happen with about 1 out of every 1000 wus. As it turns out, increasing the stack size doesn't help. I've tracked the problem down to the factoring algorithm. If I use a more robust algorithm it fixes the problem but the wus take about 2 to 3 times longer to complete. Right now I'd rather put up with a few bad wus than take the hit in processing time. So my strategy in the short term is to try and find these bad wus early and cancel them before they bounce around between too many hosts. In the meantime, I am trying to find a better work around. And once I understand the problem better I will report it to the folks at pari. |
Send message Joined: 28 Oct 11 Posts: 179 Credit: 223,811,622 RAC: 112,873 |
Thanks for reporting. Your best bet at this time is to abort that wu (I also just cancelled it so it wont be re-sent). Done. I'll let you know if I see any others with high replication numbers. |
Send message Joined: 15 Apr 12 Posts: 3 Credit: 1,032,575 RAC: 0 |
I'm not sure if you're looking to have these reported, but I just got the same error with WU 1321700. I was victim #6 and it's been sent to a 9th host. |
Send message Joined: 8 Jul 11 Posts: 1323 Credit: 410,843,122 RAC: 245,907 |
I'm not sure if you're looking to have these reported, but I just got the same error with WU 1321700. I was victim #6 and it's been sent to a 9th host. Yes, thanks for reporting this. It's been a while since I've seen one of these errors. |