[BProc] netpipe on bproc

[Kimitoshi T. <kt...@cl...>]

Hello all

I want to measure the network perfomance on my bproc system,
using programs like netpipe. My system uses tcp/ip giga ether. So I tried NPtcp.

However, when I tried to run NPtcp in reciever mode, it said 

	$  bpsh 1 NPtcp -r -b 0 -u 1048576
	NetPIPE: protocol 'tcp' unknown!

In a source code of Netpipe, it says, 
	if(!(proto = getprotobyname("tcp"))){
   	printf("NetPIPE: protocol 'tcp' unknown!\n");
   	exit(555);
 	}

So my guess was to copy /etc/protocols and one of libnss_ which include getprotobyname 
to slave nodes, by using /etc/beowulf/node_up.conf and /etc/beowulf/config.

Which one of libnss should I copy to slave node ?
Or, am I wrong in the first place ?

Is there better/easier way to measure network performance(peer to peer throughput) on a bproc system ?

Thank you,
Kimitoshi Takahashi 
Cluster Computing Inc., Japan