Dear dmtcp team,
Hello,
I am fairly new to dmtcp and I am confused by error messages I am getting.
I am trying to create a checkpoint with dmtcp on the benchmark SPECjbb.
Upon starting the benchmark program using dmtcp_launch, the following error
occurs:
---------------------------------------------------------------------------------------------------------------------------------
[45000] WARNING at signalwrappers.cpp:141 in sigaction;
REASON='JWARNING(false) failed'
"Application trying to use DMTCP's signal for it's own use.\n" " You
should employ a different signal by setting the\n" " environment variable
DMTCP_SIGCKPT to the number\n" " of the signal that DMTCP should use for
checkpointing." = Application trying to use DMTCP's signal for it's own use.
You should employ a different signal by setting the
environment variable DMTCP_SIGCKPT to the number
of the signal that DMTCP should use for checkpointing.
stopSignal = 12
[45000] WARNING at socketconnection.cpp:219 in TcpConnection;
REASON='JWARNING(false) failed'
type = 2
Message: Datagram Sockets not supported. Hopefully, this is a short lived
connection!
[45000] WARNING at socketconnection.cpp:219 in TcpConnection;
REASON='JWARNING(false) failed'
type = 2
Message: Datagram Sockets not supported. Hopefully, this is a short lived
connection!
[45000] WARNING at socketconnection.cpp:219 in TcpConnection;
REASON='JWARNING(false) failed'
type = 2
Message: Datagram Sockets not supported. Hopefully, this is a short lived
connection!
---------------------------------------------------------------------------------------------------------------------------------
I do not fully understand what this error message means, but I assume that
some signal overlapped with SPECjbb and dmtcp, and it has to do with
establishing a socket server.
The SPECjbb communicates with its 3 components using sockets.
The message tells me to set the environment variable DMTCP_SIGCKPT to
something else.
However, I could not find where the environment variables are located, and
what I should
change it to.
Could I get help in
1. Locating where the environment variables are
2. Guide in setting them to a right value
Thank you in advance.
Best,
Jooyoung Whang
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