[cs615asa] thread number limitation on lab.cs.stevens.edu

[Yuyang Zhang]

Hi guys,
I wrote a program in python. It will put the inrate/outrate query work 
for a single interface into a thread. Till now it works on linux-lab 
and drude.
Problem happens on lab.cs.stevens.edu Seems I cannot initialize more 
than 37 threads or I will have an error like
"thread.error: can't start new thread"

I also wrote another testing python script as attached. The thread 
number limitation appeared again.

The python version on the three server is 
lab: 2.4.3
linux-lab: 2.5.1
drude: 2.3.3

Python version on lab is in the middle of the other two, so I am 
guessing the limitation might not be brought by python update. It might 
be placed by OS.

If anybody knows anything about it, plz let me know. Thanks in advance 
:)

Yuyang

----testing script------
#!/usr/bin/env python

import threading
import time
class MyThread ( threading.Thread ):
	def run ( self ):
		print "hi"
		time.sleep(10)

i = 0
plist = []
while (i < 50):
	thread = MyThread()
	plist.append(thread)
	print i
	i = i + 1

print "start!"
i = 0
for p in plist:
	p.start()
	time.sleep(0.1)
	print i
	i = i + 1
	# an error happens when i = 36

for p in plist:
	p.join()