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Important changes between cado-nfs-1.0 and cado-nfs-1.1:

* the polynomial selection uses the new algorithm presented by Kleinjung at
  the 2008 CADO workshop (supports multithreading)
* connecting rootsieve5 in the polynomial selection
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* las supports I=16 (useful for integers greater than 200 digits), minor bug
  fixes, small speedup in las and purge.
* reorganization of the executable in the linear algebra step and acceleration
  of computing time on many machines with MPI.
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* addition of experimental scripts to execute the sieve on a cluster.
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  These scripts rely on the OAR job scheduler being used, and exploit its 
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  "besteffort" mode. Some even more exeprimental scripts for linear
  algebra are in the development version.
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* addition of new parameter files and a few new parameters (cf params.c91)
* The linear algebra step now makes use of dynamically loaded shared
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  libraries. This might result in configuration issues, which we hope the
  scripts get right. See the README file.
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