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# Parameter file for Cado-NFS
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# See params/params.c91 for an example which contains some documentation.
# Anything after a # is a comment, until end of line.
# Any empty line is ignored
#
#
# Each parameter should be on an individual line, like
# param0=42.17
#
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# General parameters
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# Sample parameter file for a 162-digit gnfs input
# Example: cadofactor.pl wdir=... name=... n=...
name=c162
parallel=1 # do we use parallel computation?
delay=300
machines=mach_desc # file describing available computers for parallel
# computation
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# Polynomial selection
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degree=5 # degree of the algebraic polynomial
kjdelay=300 # time between two checks
selectnice=4 # nice level for selection
## Most important parameters of polyselect
kjM=2e24 # maximum norm allowed
kjl=7 # minimal number of primes in lc(g)
kjadmin=1 # min value for lc(f)
kjadmax=2e8 # max value for lc(f)
kjadrange=4e6 # individual tasks
## Other parameters of polyselect
kjkeep=100 # number of preselected polynomials
kjkmax=25 # rotation is bounded by 2^kmax
kjincr=60 # forced divisor of lc(f)
kjpb=1024 # bound on primes allowed in lc(g)
kjp0max=100000 # bound on the additional factor in lc(g)
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# Sieve
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# (r,a) means rational or algebraic side
# rlim/alim is the bound for sieving
# lpbr/lpba is the (base 2 log of the) large prime bound
# mfbr/mfba is the (base 2 log of the) limit for the cofactor we try to
# split into large primes.
# rlambda/alambda is the early-abort ratio: if after sieving the
# approximate norm is more than
# lambda times lpb, we reject.
rlim=20000000
alim=40000000
lpbr=30
lpba=30
mfbr=60
mfba=90
rlambda=2.1
alambda=3.2
I=13 # Sieving range in lattice siever
qmin=40000000 # Start of the special-q range
qrange=200000 # The size of an elementary sieving task
checkrange=1000000 # We check if we have enough after each step
# of that many relations found.
sievenice=10
sieve_max_threads=2
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# Filtering
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excesspurge=2000000 # minimal excess we want before pruning
keeppurge=160 # shrink in purge if excess exceeds keeppurge
keep=160 # excess wanted after merge
maxlevel=20 # maximal merge level
cwmax=100 # ???
rwmax=100 # ???
ratio=1.1 # ???
bwstrat=1
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# Linear algebra
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bwmt=2x2 # Multithreading level of Block-Wiedemann
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# Characters
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nkermax=30 # maximal size of computed kernel
nchar=50 # number of characters