Discussion related to cado-nfs

[He Xiaoou <showeryhe@hotmail.com>]

Dear all,

 

I’ve followed instructions in opal-test/readme to install nomad and opal, and it works well with opal/examples/fd/fd_optimize.py. However, to execute

$ ./optimize.sh params.c60 c60.poly

in cado-nfs(3.0.0)/scripts/opal-test, with parameter(polynomial) files copied from cado-nfs/parameters/factor(polynomials), the program would always have errors (pasted below).

I don’t know what to do and any advice would be helpful.

Thank you for your time!

 

Xiaoou He

Jun 19, 2018

===

$ ./optimize.sh params.c60 c60.poly

…

Using parameters I:10 qmin:61961 bkthresh1:0 lim0:78682 lim1:111342 lpb0:18 lpb1:19 mfb0:18 mfb1:38 ncurves0:10 ncurves1:10

Running: /home1/hxo/cado-nfs/sieve/makefb -lim 111342 -poly c60.poly -maxbits 10 -t 4 -side 1 -out factorbase111342.roots1.gz

Traceback (most recent call last):

  File "las_run.py", line 274, in <module>

    measures = run(param_file, problem)

  File "las_run.py", line 222, in run

    subprocess.check_call(makefb_cmd_line)

  File "/usr/lib64/python2.7/subprocess.py", line 537, in check_call

    retcode = call(*popenargs, **kwargs)

  File "/usr/lib64/python2.7/subprocess.py", line 524, in call

    return Popen(*popenargs, **kwargs).wait()

  File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__

    errread, errwrite)

  File "/usr/lib64/python2.7/subprocess.py", line 1308, in _execute_child

    raise child_exception

OSError: [Errno 2] No such file or directory

Exception in thread blackbox.data generator:

Traceback (most recent call last):

  File "/usr/lib64/python2.7/threading.py", line 811, in __bootstrap_inner

    self.run()

  File "/home1/hxo/.local/lib/python2.7/site-packages/opal/core/mafrw.py", line 281, in run

    self.handle_message(msg)

  File "/home1/hxo/.local/lib/python2.7/site-packages/opal/core/mafrw.py", line 198, in handle_message

    self.message_handlers[cmd](info)

  File "/home1/hxo/.local/lib/python2.7/site-packages/opal/core/datagenerator.py", line 229, in get_result

    measureValues = self.algorithm.read_measure(outputFile)

  File "/home1/hxo/.local/lib/python2.7/site-packages/opal/core/algorithm.py", line 151, in read_measure

    f = open(fileName)

IOError: [Errno 2] No such file or directory: 'LAS_TESTPROB_67c9be31e050acddecb3905ae3a50db92bd4c2ea.measure'

---

$ /home1/hxo/cado-nfs/sieve/makefb -lim 111342 -poly c60.poly -maxbits 10 -t 4 -side 1 -out factorbase111342.roots1.gz

-bash: /home1/hxo/cado-nfs/sieve/makefb: No such file or directory

---

Since opal was not tested with python 3.x [1], opal was built and .py programs in opal-test were run under Python 2.7.5.

OS: Red Hat 4.8.2-13

gcc version 4.8.3 20140911

and cado-nfs.py is run with Python 3.6.5

---

[1] https://github.com/PythonOptimizers/opal