Re: [casper] ROACH serial connection issues

2014-12-02 Thread Norbert Bonnici
Hi Marc, The USB dongle's baud rate should have been set properly. When set to different baud rates no readable data is received through the serial port. Added line wrapping but it didn't change anything. In addition, recently the communications are being disabled when the GND wire is connected

[casper] NFS setup: TFTP permissions problem

2014-12-02 Thread Michael D'Cruze
Hi everyone I'm following the NFS setup guide, and have come across a problem with the /srv/roach_boot/boot directory permissions. I restart the dnsmasq service and receive the following error: Starting dnsmasq: dnsmasq: TFTP directory /srv/roach_boot/boot inaccessible: Permission denied

Re: [casper] NFS setup: TFTP permissions problem

2014-12-02 Thread Jack Hickish
Hi Michael, Do you have SELinux running? I've just checked and I get a similar permissions error if I reactivate SELinux on my Centos 6 server. On Tue Dec 02 2014 at 14:07:45 Michael D'Cruze michael.dcr...@postgrad.manchester.ac.uk wrote: Hi everyone I'm following the NFS setup guide,

Re: [casper] Question of chose Correlator Architecture

2014-12-02 Thread David MacMahon
Hi, Peter, If you have enough ports on the switch then you certainly can configure things to send the packets directly from the ROACHs to the various X boxes. The pre-built PAPER model will support this if properly configured. The one thing to keep in mind is the IP-to-MAC address table in

Re: [casper] ROACH serial connection issues

2014-12-02 Thread David MacMahon
Hi, Norbert, If you hit any key to stop autoboot when it says Hit any key to stop autoboot, does it in fact stop the autoboot? If so, you could use u-boot's printenv command to see what commands get run as part of autoboot and then try to run them by hand to try to figure out where things go

Re: [casper] NFS setup: TFTP permissions problem

2014-12-02 Thread David MacMahon
Hi, Michael, In addition to the other suggestions, you should check whether you are running dnsmasq in tftp-secure more. That might impose ownership and/or permission restrictions. See man dnsmasq for more details. Dave On Dec 2, 2014, at 6:07 AM, Michael D'Cruze wrote: Hi everyone I'm

Re: [casper] ROACH serial connection issues

2014-12-02 Thread Norbert Bonnici
Hi David, The problem is that I don't see the counter anymore and any command I give the roach such as run bit, run sailboat etc are ignored or at least no feedback is receive after the Hit any key message now. U boot is running using bootstrap option C. Should it be H? The dip switches are

Re: [casper] Question of chose Correlator Architecture

2014-12-02 Thread David MacMahon
Hi, Peter, On Dec 2, 2014, at 9:34 AM, Peter Niu wrote: Thanks for your reply.Our switch ports are enough,but the Nics on roach is not enough(we only have 4 ports each roach),so if we send packets to x box though switch,we only need 4 10Gbe ports on each roach.that is why we want to use