Posts by [AF>Libristes>Gentoo]JujuBickoille
1)
Message boards :
Questions/Problems/Bugs :
Div 0 trouble ?
(Message 1534)
Posted 25 May 2015 by [AF>Libristes>Gentoo]JujuBickoille Post: Hello, I got strange things with one of my computer: many WU are failed. ( I dunno if I got this since long time :x ) After look at my computer, I can see that in dmesg : [231078.578969] traps: lasievee_1.10_x[19613] trap divide error ip:473a95 sp:7fffe513e630 error:0 in lasievee_1.10_x86_64-pc-linux-gnu[400000+178000] [231079.656548] traps: lasievee_1.10_x[19615] trap divide error ip:473a95 sp:7fffc01b1f40 error:0 in lasievee_1.10_x86_64-pc-linux-gnu[400000+178000] [231080.764813] traps: lasievee_1.10_x[19617] trap divide error ip:473a95 sp:7fff99a3d340 error:0 in lasievee_1.10_x86_64-pc-linux-gnu[400000+178000] It seem to be a div 0 trouble because I can reproduice with simple C program : Laptop /tmp $ cat test.c int main() { int a =0; int b = 1337; int c = b /a; } Laptop /tmp $ gcc test.c -o test Laptop /tmp $ ./test zsh: floating point exception ./test and in dmesg : Laptop /tmp $ dmesg | tail -n 1 [217680.748399] traps: test[18276] trap divide error ip:400513 sp:7fff52af41b0 error:0 in test[400000+1000] The interessting question is why :) here my BOINC's logs for one task : 23-May-2015 23:20:47 [NFS@Home] Starting task OPN_463442_32516_6 using lasievee version 110 in slot 6 23-May-2015 23:20:48 [NFS@Home] Started upload of OPN_463442_52892_6_0 23-May-2015 23:20:48 [NFS@Home] Computation for task OPN_463442_32516_6 finished 23-May-2015 23:20:48 [NFS@Home] Starting task OPN_463442_39032_4 using lasievee version 110 in slot 6 23-May-2015 23:20:49 [NFS@Home] Computation for task OPN_463442_39032_4 finished 23-May-2015 23:20:49 [NFS@Home] Starting task OPN_463442_51092_5 using lasievee version 110 in slot 6 23-May-2015 23:20:50 [NFS@Home] Finished upload of OPN_463442_51560_4_0 23-May-2015 23:20:50 [NFS@Home] Finished upload of OPN_463442_52892_6_0 23-May-2015 23:20:50 [NFS@Home] Started upload of OPN_463442_33128_4_0 23-May-2015 23:20:50 [NFS@Home] Started upload of OPN_463442_32516_6_0 23-May-2015 23:20:50 [NFS@Home] Computation for task OPN_463442_51092_5 finished 23-May-2015 23:20:50 [NFS@Home] Starting task OPN_463442_45616_4 using lasievee version 110 in slot 6 23-May-2015 23:20:51 [NFS@Home] Computation for task OPN_463442_45616_4 finished 23-May-2015 23:20:51 [NFS@Home] Starting task OPN_463442_33756_2 using lasievee version 110 in slot 6 23-May-2015 23:20:52 [NFS@Home] Finished upload of OPN_463442_33128_4_0 23-May-2015 23:20:52 [NFS@Home] Finished upload of OPN_463442_32516_6_0 The WU is : http://escatter11.fullerton.edu/nfs/result.php?resultid=44005061 and the computer is : http://escatter11.fullerton.edu/nfs/show_host_detail.php?hostid=1600008 If you need more informations of if you got idea of test to do : just tell me :) Thank you for your help :) |