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[cado-nfs] las assert issue


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  • From: Tyler Busby <tylerbusby333@gmail.com>
  • To: cado-nfs@inria.fr
  • Subject: [cado-nfs] las assert issue
  • Date: Sat, 1 Jun 2024 17:29:25 -0400
  • Authentication-results: mail2-smtp-roc.national.inria.fr; spf=None smtp.pra=tylerbusby333@gmail.com; spf=Pass smtp.mailfrom=tylerbusby333@gmail.com; spf=None smtp.helo=postmaster@mail-ed1-f46.google.com
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Hi all,

I've been having an issue with las, when running snfs on the following poly:

type: snfs
n: 6308243356277541474700269906466387465649668768698484225212415185330059274620591032895850533983476147609512794703961078700715025072373025789945483489984749281912813659944490431
skew: 1.08
c0: 35
c1: 78
c2: 99
c3: 44
c4: 21
c5: -18
c6: 5
Y0: -58936166401327116551728768515278
Y1: 142284492240361451457225855360802

with the following params file:
name = v2.-1.753
N = 6308243356277541474700269906466387465649668768698484225212415185330059274620591032895850533983476147609512794703961078700715025072373025789945483489984749281912813659944490431
tasks.lim1 = 11000000
tasks.lim0 = 14000000
tasks.lpb1 = 30
tasks.lpb0 = 30
tasks.sieve.mfb1 = 57
tasks.sieve.mfb0 = 58
tasks.sieve.lambda1 = 1.90
tasks.sieve.lambda0 = 1.935
tasks.sieve.ncurves1 = 12
tasks.sieve.ncurves0 = 14
tasks.I = 13
tasks.qmin = 2400000
tasks.sieve.qrange = 10000
tasks.sieve.rels_wanted = 71000000
tasks.filter.purge.keep = 175
tasks.filter.required_excess = 0.04
tasks.filter.target_density = 125.0
tasks.linalg.bwc.interval = 4000
tasks.linalg.bwc.interleaving = 0
tasks.linalg.m = 64
tasks.linalg.n = 64
tasks.linalg.characters.nchar = 50
tasks.polyselect.admin = 0
tasks.polyselect.admax = 0
tasks.polyselect.adrange = 0
tasks.polyselect.import = v2.-1.753/c140.poly
tasks.sieve.sqside = 0
 
It gives me this error for every instance of las:
Error:Lattice Sieving: Program run on localhost failed with exit code -6
Error:Lattice Sieving: Stderr output (last 10 lines only) follow (stored in file /home/brubsby/cado-nfs/v2.-1.753/v2.-1.753.upload/v2.-1.753_sieving_2400000-2410000.fkyp3pkm.stderr0):
Error:Lattice Sieving:  /lib/x86_64-linux-gnu/libstdc++.so.6(+0xae20c) [0x7f070099420c]
Error:Lattice Sieving:  /lib/x86_64-linux-gnu/libstdc++.so.6(+0xae277) [0x7f0700994277]
Error:Lattice Sieving:  /lib/x86_64-linux-gnu/libstdc++.so.6(+0xae4d8) [0x7f07009944d8]
Error:Lattice Sieving:  /home/brubsby/cado-nfs/v2.-1.753/client/download/las(+0x7ff78) [0x55f99038ff78]
Error:Lattice Sieving:  /home/brubsby/cado-nfs/v2.-1.753/client/download/las(+0x190be7) [0x55f9904a0be7]
Error:Lattice Sieving:  /home/brubsby/cado-nfs/v2.-1.753/client/download/las(_ZN11thread_pool20thread_work_on_tasksER13worker_thread+0x91) [0x55f990585c41]
Error:Lattice Sieving:  /home/brubsby/cado-nfs/v2.-1.753/client/download/las(_ZN11thread_pool27thread_work_on_tasks_staticEPv+0x13) [0x55f990585d03]
Error:Lattice Sieving:  /lib/x86_64-linux-gnu/libc.so.6(+0x94ac3) [0x7f07005feac3]
Error:Lattice Sieving:  /lib/x86_64-linux-gnu/libc.so.6(+0x126850) [0x7f0700690850]
Error:Lattice Sieving:

and the mentioned stderr file is :
terminate called after throwing an instance of 'std::runtime_error'
terminate called recursively
  what():  code BUG() : condition rc != 0 failed at /home/brubsby/cado-nfs/sieve/fb.cpp:486
*** Error: caught signal "Aborted"
*** Error: caught signal "Aborted"
======= Backtrace: =========
/home/brubsby/cado-nfs/v2.-1.753/client/download/las(+0x288734) [0x55f990598734]
/lib/x86_64-linux-gnu/libc.so.6(+0x42520) [0x7f07005ac520]
/lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x12c) [0x7f07006009fc]
/lib/x86_64-linux-gnu/libc.so.6(raise+0x16) [0x7f07005ac476]
/lib/x86_64-linux-gnu/libc.so.6(abort+0xd3) [0x7f07005927f3]
/lib/x86_64-linux-gnu/libstdc++.so.6(+0xb042a) [0x7f070099642a]
/lib/x86_64-linux-gnu/libstdc++.so.6(+0xae20c) [0x7f070099420c]
/lib/x86_64-linux-gnu/libstdc++.so.6(+0xae277) [0x7f0700994277]
/lib/x86_64-linux-gnu/libstdc++.so.6(+0xae4d8) [0x7f07009944d8]
/home/brubsby/cado-nfs/v2.-1.753/client/download/las(+0x7ff78) [0x55f99038ff78]
/home/brubsby/cado-nfs/v2.-1.753/client/download/las(+0x190be7) [0x55f9904a0be7]
/home/brubsby/cado-nfs/v2.-1.753/client/download/las(_ZN11thread_pool20thread_work_on_tasksER13worker_thread+0x91) [0x55f990585c41]
/home/brubsby/cado-nfs/v2.-1.753/client/download/las(_ZN11thread_pool27thread_work_on_tasks_staticEPv+0x13) [0x55f990585d03]
/lib/x86_64-linux-gnu/libc.so.6(+0x94ac3) [0x7f07005feac3]
/lib/x86_64-linux-gnu/libc.so.6(+0x126850) [0x7f0700690850]

I couldn't quite make heads or tails of what exactly asserting rc != 0 was keeping from happening, but it doesn't fail until las runs, and msieve doesn't seem to have a problem with the poly.

Thanks,
Tyler

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