Discussion related to cado-nfs

["Douglas B. Staple" <dstaple@dal.ca>]

Hello:

On the CADO-NFS website, I noticed a benchmark for CADO-NFS 2.1 factoring
RSA-120 as 43.9 hours on a dual 8-core Intel(R) Xeon(R) CPU E5-2650.  This
measurement is much slower than what I'm seeing on a less powerful system.
Using a 2x Xeon E5540 (2 sockets, 4 cores per socket, 2 threads per core)
running CentOS 6 with GCC 4.6.1 and GMP 5.1.0, it takes me about 6 hours to
factor RSA-120 with Cado 2.1.1.  I am running a command of the form:
./factor.sh 
227010481295437363334259960947493668895875336466084780038173258247009162675779735389791151574049166747880487470296548479
-t 2 -s 8

Is there a mistake on the CADO website, or is there something else strange
going on?

Best,

Doug Staple


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