Charm++ parallel programming system

[Chiara Orsini <chiara.orsini AT iet.unipi.it>]

Dear charm++ users,

I tried to run SimpleArrayHello program on multiple PCs, but the program ends with this error:

Charmrun> node programs all connected

Charmrun: error on request socket--

Socket closed before recv.

I read the FAQ, but linking with -memory paranoid did not give me any useful information.

Consider two host A and B. I configured host A and B in order to be accessible with each other through ssh (without password). 

I can run BasicHelloWorld on host A (launching it from host A) successfully.

I can run BasicHelloWorldon host B (launching it from host A) successfully.

But, I cannot run BasicHelloWorld on host A and B (launching it from host A). This is my nodelist file:

group main ++shell ssh
host IP_B
host IP_A

This is the output that I obtain running this command:  ./charmrun PROGRAM_NAME +p2 ++verbose 

Charmrun> charmrun started...
Charmrun> using ./nodelist as nodesfile
Charmrun> adding client 0: "IP_B", IP:IP_B
Charmrun> adding client 1: "IP_A", IP:IP_A
Charmrun> Charmrun = IP_A, port = 50501
Charmrun> Sending "0 IP_A 50501 2547 0" to client 0.
Charmrun> find the node program "/PATH/PROGRAM_NAME/prefix" at "/PATH/PROGRAM_NAME" for 0.
Charmrun> node 0: xterm is xterm
Charmrun> Starting ssh IP_B -l user /bin/sh -f
Charmrun> remote shell (IP_B:0) started
Charmrun> Sending "1 IP_A 50501 2547 0" to client 1.
Charmrun> find the node program "/PATH/PROGRAM_NAME/prefix" at "/PATH/PROGRAM_NAME" for 1.
Charmrun> node 1: xterm is xterm
Charmrun> Starting ssh IP_A -l user /bin/sh -f
Charmrun> remote shell (IP_A:1) started
Charmrun> node programs all started
Charmrun remote shell(IP_A.1)> remote responding...
Charmrun remote shell(IP_A.1)> using xterm /usr/X11R6/bin/xterm
Charmrun remote shell(IP_A.1)> starting node-program...
Charmrun remote shell(IP_A.1)> rsh phase successful.
Charmrun remote shell(IP_B.0)> remote responding...
Charmrun remote shell(IP_B.0)> using xterm /usr/X11R6/bin/xterm
Charmrun remote shell(IP_B.0)> starting node-program...
Charmrun remote shell(IP_B.0)> rsh phase successful.
Charmrun> Waiting for 0-th client to connect.
Charmrun> Waiting for 1-th client to connect.
Charmrun> client 1 connected (IP=IP_A data_port=54659)
Charmrun> client 0 connected (IP=IP_B data_port=34817)
Charmrun> All clients connected.
Charmrun> IP tables sent.
Charmrun> node programs all connected
Charmrun: error on request socket--
Socket closed before recv.

Could anyone explain how to solve this problem?

Any information you'll give me will be surely appreciated.

Thank you in advance.

Best regards,

Chiara