No output from threads

[Jeff Shannon]

In article <a8i0pv$bu6$1 at news.rchland.ibm.com>, ldw at us.ibm.com 
says...
> I made the command look like: "start /belownormal /wait cmd /c
> myprog.exe -opt 3 >out3.txt".  No joy.
> Then I tried: "cmd /c start /belownormal /wait myprog.exe -opt 3 >out3.txt".
> Also no joy.
> 
> Finally I went for simplicity and tried just: "myprog.exe -opt 3 >out3.txt".
> And it works.  The only problem with this is that messages printed out while
> the threads are running are a little confusing.  I have only one window for
> both threads and can't tell one message with another.  I guess I'll put up
> with that for now.

A word of warning, though -- you may not be getting much usage of 
your second processor.  Python itself has a Global Interpreter 
Lock, forcing only one Python thread to be running at any given 
time.  Secondary threads are not run on multiple processors.  You 
may not be having this problem, since you're executing external 
programs -- I'd imagine that those could be scheduled on the 
second processor, but you should verify this.

In general, Python doesn't make effective use of SMP.  Hopefully 
this will be fixed eventually, but it's a huge undertaking.

-- 

Jeff Shannon
Technician/Programmer
Credit International