On most systems the open file limit per process is 256. M5 opens files
for stdin/stdout/stderr, reading in binaries, etc. So the number is
actually higher. What is the workload you're running? Is this syscall
emulation?
The switch won't help, as you've already turned off the remotegdb
ports, but each workload is going to have a couple of file descriptors
for dealing with stdin/stdout/stderr.
Try playing with ulimit -n either through that or an /etc file you
should be able to raise the number of open files.
Ali
On Dec 11, 2007, at 10:26 PM, Jiayuan wrote:
Yeah I'm trying to simulate a CMP system with up to 64 cores and 256
thread
contexts in total. And I may create a batch of 8 m5 instances on the
same
machine. So there may be 2048 thread contexts simulated. My system
worked
fine with M5v2beta3. for beta 4, I'm not sure if I can open so many
files
but I'll try.
Thanks anyway! And let me know when you remember if there is a magic
switch
:)
Jiayuan
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
On
Behalf Of Ali Saidi
Sent: Tuesday, December 11, 2007 10:07 PM
To: M5 users mailing list
Subject: Re: [m5-users] panic: Can't create socket
Are you simulating many systems or many processors? M5 needs a certain
number of open files (just like any other process). You might want to
try to increase the number of open files allowed by using ulimit (or
something similar depending on what OS you're using).
Ali
On Dec 11, 2007, at 9:26 PM, jiayuan meng wrote:
I'm sorry, this doesn't seem to work, I still have the original
problems that hinders me from doing large scale experiments...
Do you have more clues?
Thanks!
Jiayuan
----- Original Message -----
From: "Ali Saidi" <[EMAIL PROTECTED]>
To: "M5 users mailing list" <m5-users@m5sim.org>
Sent: 2007年12月4日 11:13 AM
Subject: Re: [m5-users] panic: Can't create socket
If you change the line:
int rgdb_enable = true;
to false in src/sim/system.cc that should solve you problem. I was
almost certain that there was a parameter to set that, but I can't
find it at the moment.
Ali
On Dec 2, 2007, at 8:57 PM, Jiayuan Meng wrote:
I need to simulate many core systems where I may have 64+ cores
running, and each core has multiple thread contexts. It appears M5
now creates a couple of sockets for each thread context at the
beginning of the simulation. I'm not sure what roles the sockets
play, but I guest application doesn't use sockets. Is there a
way to
turn them off?
Thanks!
Jiayuan
----- Original Message -----
From: "Gabe Black" <[EMAIL PROTECTED]>
To: "M5 users mailing list" <m5-users@m5sim.org>
Sent: 2007年12月4日 9:43 AM
Subject: Re: [m5-users] panic: Can't create socket
Likely what is happening is the m5 process is running out of file
descriptors. If you expect your simulation to need to open a
lot of
them, you could try to push up that limit. I don't remember
exactly
how
that's done off hand, but I'm pretty sure you need administrative
privileges to do that normally. It could also be that your
simulation is
going berserk and opening a ton of files when it shouldn't,
although
that's not likely since it looks like it hasn't done anything
yet.
Gabe
Jiayuan Meng wrote:
Hey all,
While testing my program, I sometimes get the following panic.
What can I do about it? By the way, is there anyway to turn off
the sockets?
Thanks !
Global frequency set at 1000000000000 ticks per second
0: system.remote_gdb.listener: listening for remote gdb #0 on
port
7261
0: system.remote_gdb.listener: listening for remote gdb #1 on
port
7262
0: system.remote_gdb.listener: listening for remote gdb #2 on
port
7263
panic: Can't create socket:Too many open files !
Jiayuan
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