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Old 2012-09-17, 04:00   #23
WraithX
 
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Quote:
Originally Posted by Dubslow View Post
Code:
∰∂ taskset f nice -n 19 ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
...
OSError: [Errno 13] Permission denied
Hmmm, I haven't seen this before, but looking at the error from your python 3.2 run:
Code:
RuntimeError: Exception occurred in preexec_fn.
This might be related to your use of taskset and nice. Can you find nice on your system and set the variable:
Code:
  NICE_PATH = ''
in your ecm.py script? (should be around line 95 in ecm.py)

If that doesn't work I have some more things to try, but let's see where this gets us first.
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Old 2012-09-17, 04:07   #24
Dubslow
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Quote:
Originally Posted by WraithX View Post
Hmmm, I haven't seen this before, but looking at the error from your python 3.2 run:
Code:
RuntimeError: Exception occurred in preexec_fn.
This might be related to your use of taskset and nice. Can you find nice on your system and set the variable:
Code:
  NICE_PATH = ''
in your ecm.py script? (should be around line 95 in ecm.py)

If that doesn't work I have some more things to try, but let's see where this gets us first.
It's already like that (as is EXE_SUFFIX or some such variable).
Code:
ECM = 'ecm'

if sys.platform.startswith('win'):
  EXE_SUFFIX = '.exe'
else:
  EXE_SUFFIX = ''
  NICE_PATH = ''
  ECM = './' + ECM
Last fiddled with by Dubslow on 2012-09-17 at 04:57 Reason: [code]
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Old 2012-09-17, 12:15   #25
WraithX
 
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Quote:
Originally Posted by Dubslow View Post
It's already like that (as is EXE_SUFFIX or some such variable).
Quote:
Originally Posted by WraithX
Can you find nice on your system and set the variable:
Once again, with feeling. Can you find nice (the executable) on your system (maybe in /usr/bin/nice, etc) and then set the value of NICE_PATH accordingly? For the above example (/usr/bin/nice), try both /usr/bin/nice and just /usr/bin/ to see if either works.

Come to think of it...
Since this code mostly comes from factmsieve.py, I had never used or thought much about the NICE_PATH option. But thinking about it, I believe that you would set the NICE_PATH option to '/usr/bin/nice -19', instead of running with taskset/nice etc. Can you also give this a try?
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Old 2012-09-17, 18:40   #26
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Quote:
Originally Posted by WraithX View Post
Once again, with feeling. Can you find nice (the executable) on your system (maybe in /usr/bin/nice, etc) and then set the value of NICE_PATH accordingly? For the above example (/usr/bin/nice), try both /usr/bin/nice and just /usr/bin/ to see if either works.

Come to think of it...
Since this code mostly comes from factmsieve.py, I had never used or thought much about the NICE_PATH option. But thinking about it, I believe that you would set the NICE_PATH option to '/usr/bin/nice -19', instead of running with taskset/nice etc. Can you also give this a try?
Whoops

No dice though.
Code:
ECM = 'ecm'

if sys.platform.startswith('win'):
  EXE_SUFFIX = '.exe'
else:
  EXE_SUFFIX = ''
  NICE_PATH = '/usr/bin/nice -n 19' # No difference run this way or with '/usr/bin/nice 19' or 'nice -19'
  ECM = './' + ECM
Code:
bill@Gravemind:~/yafu/ecm∰∂ which nice
/usr/bin/nice
[1]+  Done                    gedit ecm.py
bill@Gravemind:~/yafu/ecm∰∂ less ~/.bash_history 
bill@Gravemind:~/yafu/ecm∰∂ taskset f ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM work   |
-> | on a single machine.  It is Copyright, 2011, David Cleaver and  |
-> | is a conversion of factmsieve.py that is Copyright, 2010, Brian |
-> | Gladman.   Version 0.08 (Python 2.6 or later) 19th Oct 2011.    |
-> |_________________________________________________________________|
 
-> Number(s) to factor:
-> 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
->=============================================================================
-> Working on number: 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
-> Found previous job file job3362.txt, will resume work...
-> *** Already completed 0 curves on this number...
-> *** Will run 7553 more curves.
-> Currently working on: job3362.txt
-> Starting 4 instances of GMP-ECM...
-> ./ecm -one -c 1889 43000000 < job3362.txt > job3362_t00.txt
Traceback (most recent call last):
  File "./ecm.py", line 1224, in <module>
    start_ecm_threads()
  File "./ecm.py", line 521, in start_ecm_threads
    procs.append(run_exe(ECM, ecm_args2, in_file = ecm_job, out_file = file_name, wait = False))
  File "./ecm.py", line 325, in run_exe
    p = subprocess.Popen(args.split(' '), **al)
  File "/usr/lib/python3.2/subprocess.py", line 736, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.2/subprocess.py", line 1331, in _execute_child
    raise child_exception_type(err_msg)
RuntimeError: Exception occurred in preexec_fn.
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Old 2012-09-18, 16:20   #27
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What happens if you run it without the "taskset f" at the start of the command line?

Chris
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Old 2012-09-20, 05:24   #28
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Quote:
Originally Posted by chris2be8 View Post
What happens if you run it without the "taskset f" at the start of the command line?

Chris
Code:
bill@Gravemind:~/yafu/ecm∰∂ ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM work   |
-> | on a single machine.  It is Copyright, 2011, David Cleaver and  |
-> | is a conversion of factmsieve.py that is Copyright, 2010, Brian |
-> | Gladman.   Version 0.08 (Python 2.6 or later) 19th Oct 2011.    |
-> |_________________________________________________________________|
 
-> Number(s) to factor:
-> 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
->=============================================================================
-> Working on number: 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
-> Found previous job file job3362.txt, will resume work...
-> *** Already completed 0 curves on this number...
-> *** Will run 7553 more curves.
-> Currently working on: job3362.txt
-> Starting 4 instances of GMP-ECM...
-> ./ecm -one -c 1889 43000000 < job3362.txt > job3362_t00.txt
Traceback (most recent call last):
  File "./ecm.py", line 1224, in <module>
    start_ecm_threads()
  File "./ecm.py", line 521, in start_ecm_threads
    procs.append(run_exe(ECM, ecm_args2, in_file = ecm_job, out_file = file_name, wait = False))
  File "./ecm.py", line 325, in run_exe
    p = subprocess.Popen(args.split(' '), **al)
  File "/usr/lib/python3.2/subprocess.py", line 736, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.2/subprocess.py", line 1331, in _execute_child
    raise child_exception_type(err_msg)
RuntimeError: Exception occurred in preexec_fn.
Doesn't matter what the value of NICE_PATH is.
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Old 2012-09-21, 02:37   #29
WraithX
 
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Quote:
Originally Posted by Dubslow View Post
Code:
bill@Gravemind:~/yafu/ecm∰∂ ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
Doesn't matter what the value of NICE_PATH is.
I wonder if the following will make a difference. Try to put the python executable in front of the ecm.py script, like so:
Code:
/path/to/python ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
And, let's also try that with different values in NICE_PATH.
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Old 2012-09-21, 03:11   #30
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Quote:
Originally Posted by WraithX View Post
I wonder if the following will make a difference. Try to put the python executable in front of the ecm.py script, like so:
Code:
/path/to/python ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
And, let's also try that with different values in NICE_PATH.
Code:
bill@Gravemind:~/yafu/ecm∰∂ /usr/bin/python3 ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM work   |
-> | on a single machine.  It is Copyright, 2011, David Cleaver and  |
-> | is a conversion of factmsieve.py that is Copyright, 2010, Brian |
-> | Gladman.   Version 0.08 (Python 2.6 or later) 19th Oct 2011.    |
-> |_________________________________________________________________|
 
-> Number(s) to factor:
-> 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
->=============================================================================
-> Working on number: 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
-> Found previous job file job3362.txt, will resume work...
-> *** Already completed 0 curves on this number...
-> *** Will run 7553 more curves.
-> Currently working on: job3362.txt
-> Starting 4 instances of GMP-ECM...
-> ./ecm -one -c 1889 43000000 < job3362.txt > job3362_t00.txt
Traceback (most recent call last):
  File "./ecm.py", line 1224, in <module>
    start_ecm_threads()
  File "./ecm.py", line 521, in start_ecm_threads
    procs.append(run_exe(ECM, ecm_args2, in_file = ecm_job, out_file = file_name, wait = False))
  File "./ecm.py", line 325, in run_exe
    p = subprocess.Popen(args.split(' '), **al)
  File "/usr/lib/python3.2/subprocess.py", line 736, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.2/subprocess.py", line 1331, in _execute_child
    raise child_exception_type(err_msg)
RuntimeError: Exception occurred in preexec_fn.
I tried it with NICE_PATH = '', '/usr/bin/nice', and '/usr/bin/nice -n 19'.
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Old 2012-09-22, 20:37   #31
WraithX
 
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Quote:
Originally Posted by Dubslow View Post
I tried it with NICE_PATH = '', '/usr/bin/nice', and '/usr/bin/nice -n 19'.
Man, I'm sorry this is taking a while to figure out. Ok, lets try the following:
With the following command line:
ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
Set NICE_PATH = 'lambda:os.nice(20)'

If that one does not work, then:
With the following command line:
ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
Code:
Set NICE_PATH = ''
Change the following line in ecm.py from this:
  p = subprocess.Popen(args.split(' '), **al)
To this:
  p = subprocess.Popen(args.split(' '), preexec_fn=lambda:os.nice(20), **al)
And if neither of those work, can you also try with /usr/bin/python3 in front of each command line?
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Old 2012-09-22, 20:54   #32
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Quote:
Originally Posted by WraithX View Post
Man, I'm sorry this is taking a while to figure out. Ok, lets try the following:
With the following command line:
ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
Set NICE_PATH = 'lambda:os.nice(20)'

If that one does not work, then:
With the following command line:
ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
Code:
Set NICE_PATH = ''
Change the following line in ecm.py from this:
  p = subprocess.Popen(args.split(' '), **al)
To this:
  p = subprocess.Popen(args.split(' '), preexec_fn=lambda:os.nice(20), **al)
And if neither of those work, can you also try with /usr/bin/python3 in front of each command line?
I have a few comments:

First, I'm pretty sure /usr/bin/python3 won't make a difference. In Linux, the file type is NOT associated with the python executable; rather the shell (bash, in my and most cases) looks at the first line for the so-called "shebang" (I prefer "hashbang") which looks like `#! path-to-exe`; the shell then calls `path-to-exe $0 $@`, which is exactly the same as if I did it myself. In my case:
Code:
bill@Gravemind:~/yafu/ecm∰∂ head -n 1 ecm.py
#! /usr/bin/python3
So I won't try it with the /usr/bin/python3 in front.

As for the nice, when I tried it with NICE_PATH='' and without a nice command of my own, it still didn't work, even though it should have just started with normal priority; doesn't that mean that the problem isn't with nice-ing it? I'm less sure about this, so I'll try it with your suggestions. (I had no idea os has a nice(), though of course it makes sense ) (PS Wouldn't the **al overwrite the keyword arg? PPS I was sort of right, see second attempt error)

Code:
~/yafu/ecm∰∂ cat ecm.py | grep NICE_PATH
  NICE_PATH = 'lambda: os.nice(20)' #'/usr/bin/nice -19'
    al['preexec_fn'] = NICE_PATH
bill@Gravemind:~/yafu/ecm∰∂ ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM work   |
-> | on a single machine.  It is Copyright, 2011, David Cleaver and  |
-> | is a conversion of factmsieve.py that is Copyright, 2010, Brian |
-> | Gladman.   Version 0.08 (Python 2.6 or later) 19th Oct 2011.    |
-> |_________________________________________________________________|
 
-> Number(s) to factor:
-> 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
->=============================================================================
-> Working on number: 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
-> Found previous job file job3362.txt, will resume work...
-> *** Already completed 0 curves on this number...
-> *** Will run 7553 more curves.
-> Currently working on: job3362.txt
-> Starting 4 instances of GMP-ECM...
-> ./ecm -one -c 1889 43000000 < job3362.txt > job3362_t00.txt
Traceback (most recent call last):
  File "./ecm.py", line 1224, in <module>
    start_ecm_threads()
  File "./ecm.py", line 521, in start_ecm_threads
    procs.append(run_exe(ECM, ecm_args2, in_file = ecm_job, out_file = file_name, wait = False))
  File "./ecm.py", line 325, in run_exe
    p = subprocess.Popen(args.split(' '), **al)
  File "/usr/lib/python3.2/subprocess.py", line 736, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.2/subprocess.py", line 1331, in _execute_child
    raise child_exception_type(err_msg)
RuntimeError: Exception occurred in preexec_fn.
Code:
bill@Gravemind:~/yafu/ecm∰∂ cat ecm.py | grep "NICE_PATH"
  NICE_PATH = '' #'/usr/bin/nice -19'
    al['preexec_fn'] = NICE_PATH
bill@Gravemind:~/yafu/ecm∰∂ man grep
bill@Gravemind:~/yafu/ecm∰∂ cat ecm.py | grep "NICE_PATH"
  NICE_PATH = '' #'/usr/bin/nice -19'
    al['preexec_fn'] = NICE_PATH
bill@Gravemind:~/yafu/ecm∰∂ cat ecm.py | grep "Popen"
  p = subprocess.Popen(args.split(' '), preexec_fn=lambda: os.nice(20), **al)
  #p = subprocess.Popen(args.split(' '), **al)
  #p = subprocess.Popen([ex] + args.split(' '), **al)
  #p = subprocess.Popen(cs.split(' '), **al)
bill@Gravemind:~/yafu/ecm∰∂ ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM work   |
-> | on a single machine.  It is Copyright, 2011, David Cleaver and  |
-> | is a conversion of factmsieve.py that is Copyright, 2010, Brian |
-> | Gladman.   Version 0.08 (Python 2.6 or later) 19th Oct 2011.    |
-> |_________________________________________________________________|
 
-> Number(s) to factor:
-> 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
->=============================================================================
-> Working on number: 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
-> Found previous job file job3362.txt, will resume work...
-> *** Already completed 0 curves on this number...
-> *** Will run 7553 more curves.
-> Currently working on: job3362.txt
-> Starting 4 instances of GMP-ECM...
-> ./ecm -one -c 1889 43000000 < job3362.txt > job3362_t00.txt
Traceback (most recent call last):
  File "./ecm.py", line 1225, in <module>
    start_ecm_threads()
  File "./ecm.py", line 522, in start_ecm_threads
    procs.append(run_exe(ECM, ecm_args2, in_file = ecm_job, out_file = file_name, wait = False))
  File "./ecm.py", line 325, in run_exe
    p = subprocess.Popen(args.split(' '), preexec_fn=lambda: os.nice(20), **al)
TypeError: type object got multiple values for keyword argument 'preexec_fn'
Code:
bill@Gravemind:~/yafu/ecm∰∂ cat ecm.py | grep "NICE_PATH"
  NICE_PATH = '' #'/usr/bin/nice -19'
    pass #al['preexec_fn'] = NICE_PATH
bill@Gravemind:~/yafu/ecm∰∂ cat ecm.py | grep "Popen"
  p = subprocess.Popen(args.split(' '), preexec_fn=lambda: os.nice(20), **al)
  #p = subprocess.Popen(args.split(' '), **al)
  #p = subprocess.Popen([ex] + args.split(' '), **al)
  #p = subprocess.Popen(cs.split(' '), **al)
bill@Gravemind:~/yafu/ecm∰∂ ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM work   |
-> | on a single machine.  It is Copyright, 2011, David Cleaver and  |
-> | is a conversion of factmsieve.py that is Copyright, 2010, Brian |
-> | Gladman.   Version 0.08 (Python 2.6 or later) 19th Oct 2011.    |
-> |_________________________________________________________________|
 
-> Number(s) to factor:
-> 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
->=============================================================================
-> Working on number: 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
-> Found previous job file job3362.txt, will resume work...
-> *** Already completed 0 curves on this number...
-> *** Will run 7553 more curves.
-> Currently working on: job3362.txt
-> Starting 4 instances of GMP-ECM...
-> ./ecm -one -c 1889 43000000 < job3362.txt > job3362_t00.txt
Traceback (most recent call last):
  File "./ecm.py", line 1225, in <module>
    start_ecm_threads()
  File "./ecm.py", line 522, in start_ecm_threads
    procs.append(run_exe(ECM, ecm_args2, in_file = ecm_job, out_file = file_name, wait = False))
  File "./ecm.py", line 325, in run_exe
    p = subprocess.Popen(args.split(' '), preexec_fn=lambda: os.nice(20), **al)
  File "/usr/lib/python3.2/subprocess.py", line 736, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.2/subprocess.py", line 1330, in _execute_child
    raise child_exception_type(errno_num, err_msg)
OSError: [Errno 13] Permission denied
The last error is the same as with python2.7 .
Last fiddled with by Dubslow on 2012-09-22 at 21:06
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Old 2012-09-22, 21:10   #33
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Code:
bill@Gravemind:~/yafu/ecm∰∂ cat ecm.py | grep "NICE_PATH"
  NICE_PATH = '' #'/usr/bin/nice -19'
    pass #al['preexec_fn'] = NICE_PATH
bill@Gravemind:~/yafu/ecm∰∂ cat ecm.py | grep "Popen"
  #p = subprocess.Popen(args.split(' '), preexec_fn=lambda: os.nice(20), **al)
  p = subprocess.Popen(args.split(' '), **al) # Don't bother with preexec
  #p = subprocess.Popen([ex] + args.split(' '), **al)
  #p = subprocess.Popen(cs.split(' '), **al)
bill@Gravemind:~/yafu/ecm∰∂ ./ecm.py -c 7553 -one -threads 4 -out EMS.job 43000000 < num
-> ___________________________________________________________________
-> | Running ecm.py, a Python driver for distributing GMP-ECM work   |
-> | on a single machine.  It is Copyright, 2011, David Cleaver and  |
-> | is a conversion of factmsieve.py that is Copyright, 2010, Brian |
-> | Gladman.   Version 0.08 (Python 2.6 or later) 19th Oct 2011.    |
-> |_________________________________________________________________|
 
-> Number(s) to factor:
-> 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
->=============================================================================
-> Working on number: 96829488818499592481168771836336683023181156945795350980834458372199490598743221067775290195641203125439681639536219726888871822435629511515837059837171813128663335953886175536897367740550240372528813404899458874513057418332695709006061299277468749241875966062032012477732299909160292749026996368849279816035027111164073836173908645011 (335 digits)
-> Found previous job file job3362.txt, will resume work...
-> *** Already completed 0 curves on this number...
-> *** Will run 7553 more curves.
-> Currently working on: job3362.txt
-> Starting 4 instances of GMP-ECM...
-> ./ecm -one -c 1889 43000000 < job3362.txt > job3362_t00.txt
Traceback (most recent call last):
  File "./ecm.py", line 1225, in <module>
    start_ecm_threads()
  File "./ecm.py", line 522, in start_ecm_threads
    procs.append(run_exe(ECM, ecm_args2, in_file = ecm_job, out_file = file_name, wait = False))
  File "./ecm.py", line 326, in run_exe
    p = subprocess.Popen(args.split(' '), **al) # Don't bother with preexec
  File "/usr/lib/python3.2/subprocess.py", line 736, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.2/subprocess.py", line 1330, in _execute_child
    raise child_exception_type(errno_num, err_msg)
OSError: [Errno 13] Permission denied
Last fiddled with by Dubslow on 2012-09-22 at 21:12
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