You probably want to read up on pfilter and design rules to let your packets through.
Cheers, Bernard > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > ullas ckm > Sent: Monday, May 02, 2005 9:24 > To: Michael Edwards > Cc: [email protected] > Subject: Re: [Oscar-users] client-server programming not > possible with head node?why > > hi > > we switched off the pfilter service(pfilter stop) and have > rectified the error. > hope this is the correct way to do. > thanks for the support. > > regards > ullas > ----- Original Message ----- > From: "Michael Edwards" <[EMAIL PROTECTED]> > To: "ullas ckm" <[EMAIL PROTECTED]> > Subject: Re: [Oscar-users] client-server programming not > possible with head node?why > Date: Mon, 2 May 2005 08:41:36 -0500 > > > > > You might check for problems with your network drivers (or just for > > updates), especially if the head node has a different card than the > > others. I think the problem with the shipped 3c2000t > driver I used to > > use was related to UDP transfers. > > > > The pfilter thing is easy to check, just remove the package > with the > > oscar wizard and check your program again. Then if it > still doesn't > > work you can put it back again if you want. > > > > Also, you might just try running "Complete Cluster Setup" > again (which > > resets a bunch of configuration files), or rebooting the cluster > > (headnode first, then nodes). Every once and a while I have gotten > > things into odd states and those two things are quick and > easy things > > to try. > > > > As far as running other UDP programs, I believe LAM/MPI > uses UDP for > > some of its inter-daemon communications so you might try > running some > > benchmarks or somesuch using LAM and see if they work. I > am not super > > sure about this though. > > > > On 5/2/05, ullas ckm <[EMAIL PROTECTED]> wrote: > > > hi, > > > > > > thx for the reply. > > > > > > But if we run client program on the head node and send > the packet(to > > > server) then smooth communication is possible. > > > that time its not dropping any packets.only in the first > > > instance(i,e server waiting for some request) its giving problem. > > > > > > cheers > > > ullas > > > ----- Original Message ----- > > > From: "Bernard Li" <[EMAIL PROTECTED]> > > > To: "ullas ckm" <[EMAIL PROTECTED]>, > > > [email protected] > > > Subject: RE: [Oscar-users] client-server programming not possible > > > with head node?why > > > Date: Sun, 1 May 2005 23:57:01 -0700 > > > > > > > > > > > Hi Ullas: > > > > > > > > Do you have pfilter installed? If so then it is > probably dropping > > > > the packets. For more information about pfilter, check: > > > > > > > > man pfilter > > > > > > > > Cheers, > > > > > > > > Bernard > > > > > > > > ________________________________ > > > > > > > > From: [EMAIL PROTECTED] on behalf > of ullas > > > > ckm > > > > Sent: Sun 01/05/2005 11:52 PM > > > > To: [email protected] > > > > Subject: [Oscar-users] client-server programming not > possible with > > > > head node?why > > > > > > > > > > > > > > > > Hi, > > > > > > > > we have the cluster setup(OSCAR4.0 on RH9.0).now we are > trying out > > > > some high performance application(large file transfer). > > > > > > > > For that we were trying out some UDP communication between head > > > > node and some external system. > > > > server program: on head node > > > > client:external system > > > > > > > > But our server program(running on head node) wont recieve > > > > packets(first packet) directed to it. > > > > > > > > somebody please try some client-server program,running server > > > > program on head node and pls let us know whether the problem > > > > persists. > > > > > > > > Thanks, > > > > Ullas > > > > -- > > > > _______________________________________________ > > > > Check out the latest SMS services @ > http://www.linuxmail.org This > > > > allows you to send and receive SMS through your mailbox. > > > > > > > > Powered by Outblaze > > > > > > > > > > > > ------------------------------------------------------- > > > > This SF.Net email is sponsored by: NEC IT Guy Games. > > > > Get your fingers limbered up and give it your best > shot. 4 great > > > > events, 4 opportunities to win big! Highest score > wins.NEC IT Guy > > > > Games. Play to win an NEC 61 plasma display. Visit > > > > http://www.necitguy.com/?r > > > > _______________________________________________ > > > > Oscar-users mailing list > > > > [email protected] > > > > https://lists.sourceforge.net/lists/listinfo/oscar-users > > > > > > -- > > > _______________________________________________ > > > Check out the latest SMS services @ http://www.linuxmail.org This > > > allows you to send and receive SMS through your mailbox. > > > > > > Powered by Outblaze > > > > > > ------------------------------------------------------- > > > This SF.Net email is sponsored by: NEC IT Guy Games. > > > Get your fingers limbered up and give it your best shot. 4 great > > > events, 4 opportunities to win big! Highest score wins.NEC IT Guy > > > Games. Play to win an NEC 61 plasma display. Visit > > > http://www.necitguy.com/?r > > > _______________________________________________ > > > Oscar-users mailing list > > > [email protected] > > > https://lists.sourceforge.net/lists/listinfo/oscar-users > > > > > -- > _______________________________________________ > Check out the latest SMS services @ http://www.linuxmail.org > This allows you to send and receive SMS through your mailbox. > > Powered by Outblaze > > > ------------------------------------------------------- > This SF.Net email is sponsored by: NEC IT Guy Games. > Get your fingers limbered up and give it your best shot. 4 > great events, 4 opportunities to win big! Highest score > wins.NEC IT Guy Games. Play to win an NEC 61 plasma display. > Visit http://www.necitguy.com/?r > _______________________________________________ > Oscar-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/oscar-users > ------------------------------------------------------- This SF.Net email is sponsored by: NEC IT Guy Games. Get your fingers limbered up and give it your best shot. 4 great events, 4 opportunities to win big! Highest score wins.NEC IT Guy Games. Play to win an NEC 61 plasma display. Visit http://www.necitguy.com/?r _______________________________________________ Oscar-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/oscar-users
