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Old 2020-06-19, 22:40   #1
RichD's Avatar
Sep 2008

2·7·227 Posts
Default Executing "las" stand-alone

I am trying to perform test sieving by executing the las program by passing the parameters in the command line.

The output file, which contains the command line syntax, provides no clues.
# () ./las -v -poly 732541-47.txt -out 20M.txt -I 16 -q0 20000000 -nq 5000 -sqside 0 -lim0 536000000 -lim1 536000000 -lpb0 33 -lpb1 33 -mfb0 66 -mfb1 96 -fb1 732541-47.txt
# List of modified files in working directory and their SHA1 sum:
# (tarball extracted)
# Compiled with gcc 7.4.1 20190905 [gcc-7-branch revision 275407]
# Compilation flags (C) -std=c99 -g -W -Wall -O2  -msse3 -mssse3 -msse4.1 -mpopcnt -mavx -mpclmul
# Compilation flags (C++) -std=c++11 -Wno-c++11-compat -g -W -Wall -O2  -Wno-literal-suffix -msse3 -mssse3 -msse4.1 -mpopcnt -mavx -mpclmul
# las.c flags: LOGNORM_GUARD_BITS=1.00
# Interpreting -I 16 as meaning -A 31
# No -t option found, running single-threaded.
# Getting rid of sieve_shared_data structure [rss=4884.00 k]
# Applying binding machine,1,1 with hwloc disabled
# 1 jobs in parallel
# 1 threads per job
# Expected memory usage per binding zone for the factor base: 0.89 GB
# Expected memory usage per subjob for logI=16: 7.48 GB
# Expected memory use per subjob (max reached for logI=16): 7.48 GB
# Expected memory use for 1 binding zones and 1 1-threaded jobs per zone, counting 24 MB of base footprint: 8.40 GB
# Using default value powlim0=ULONG_MAX
# Creating side-0 rational factor base for polynomial f0(x) = 82919274927962023982932249248351337261442889121-1*x
# including primes up to 536000000 and prime powers up to 18446744073709551615 using threadpool of 1 threads.
# Creating side-0 rational factor base took 7.7s (9.9s real)
# Using default value powlim1=ULONG_MAX
# Reading side-1 factor base from disk for polynomial f1(x) = -732541+x^6
# Reading side-1 factor base from 732541-47.txt
The poly file and fb1 are the same file. Both which needs to be provided, apparently.
n: 605716904027877980774625455520189647387776352555063757365644672493136637525085152114527251672682055452329862008130550673203343550128250999766605061023948523297828457779191592093682881010498969046911261346842026672855745883554109771998292748069377018429964450347583969787
skew: 9.494
c6: 1
c5: 0
c4: 0
c3: 0
c2: 0
c1: 0
c0: -732541
Y1: -1
Y0: 82919274927962023982932249248351337261442889121
The only clue I get is in stdout to the console.
# fb_read: prime is not an integer on line 1
I have no idea what needs to be corrected.
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