Forum: SC072-PDS Forum

Post: Can't mount ssp-ws:/local on ssp (No route to host)

Thu, 26 Jun 2008 18:08:41 EDT

Even after setting up /etc/exports and running exportfs -a -v, you get an error message when, on the ssp, you say:

# mount -t nfs ssp-ws:/local /mnt

the error is:

mount: mount to NFS server 'ssp-ws' failed: System Error: No route to host.

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Post: external LDAP server configuration

Wed, 25 Jun 2008 08:52:32 EDT

I am attempting to point the nodes in an SC072 system at an external LDAP server, one running on a Fedora 9 system. I am able to run ldapsearch on the SC072 nodes and get appropriate responses from the query. However, when I try to login to the SC072, I see in the log files on the Fedora 9 server that the SC072 has selected "ou=People,dc=example,dc=com" rather than "dc=example,dc=com" as the search base. This causes the Fedora 9 ldap server to return null results. (When I run ldapsearch on the nodes, I use -b "dc=example,dc=com", which gives the expected results.)
I do not know enough about configuring ldap to determine from whence arises the "ou=People" part of the base for the ldap query on the SC072 or to configure the Fedora 9 ldap server to make use of it. Can anyone point me to some useful documentation in this area?

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Post: SSP site DHCP issue

Tue, 13 May 2008 10:39:17 EDT

Hi,

I am trying to get the site interface on the SSP (VM) on the
SC072 I support to get an IP address from our network DHCP
server. I never see any requests from the SSP on my DHCP
server. I see requests for the SSP-WS (Redhat host for VMware
Player) on my DHCP server. If I check the logs for the
DNSMasq server running on the SSP, I see the DHCP requests from
the site interface, but it does not receive an address as the
DNSMasq server does not have the MAC Address for the SSP site
interface.

Is this the proper operation of the SSP site interface?
According to the quick start guide, the SSP is supposed to
connect to the outside world through the site interface.
What would I need to change to get this to work? Is it
a misconfiguration of the virtual machine that is causing
the site interface to not go out on the SSP-WS ethernet
interface?

Thank you.

- Mike Moore

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Post: Disk and RAM capacity Questions

Thu, 08 May 2008 13:58:47 EDT

We've gotten the following questions from a user:

How much RAM can you put in an SC072?
We ship with 48GB.
The 24 DIMMs are 2 GB each.
Two DIMMs per chip.

How much RAM per core?
4GB/6 cores = 2/3GB per CPU.

Can you utilize 4GB DIMMs instead?
We don't yet offer 4 GB DIMMs.

Which manufacturer makes the CPUs?
TSMC fabs the chip that we designed.

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Post: [SC072] /etc/modprobe.conf contains wrong ethernet drivers?

Tue, 06 May 2008 14:15:23 EDT

According to lspci, eth0 on the SC072 is an RTL8139 ethernet controller, but /etc/modprobe.conf aliases eth0 to the r8169 driver... Is this the way it's supposed to be, or is this a bug?

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Post: User Ethernet Port not Activating

Thu, 01 May 2008 09:22:51 EDT

The system and port was running fine, but one of our users wanted the system to be upgraded to fix some gcc problems. We had version p6 on the primary partition and I tried upgrading to version p10, but it didn't seem to have the correct ssp.tgz file that the installer was looking for so I tried p9, but that one failed with an unexpected end of file error. I finally got p8 to install on sda6, so I reboot the vmware environment and it isn't reachable by ssh any more. I go down and take a look at the machine and the vmware environment is booted but there is no network now. I have tried booting back in to the original p6 environment as well and it doesn't work now either. The ethernet port light does not come on either. So I assumed the ethernet module just wasn't being loaded for the "site" interface any more so I look at lspci and it only shows the Intel Gigabit interface as being the only nic and lsmod actually shows e1000 being loaded. I've also tried modprobe -r e1000 and then modprobe e1000 because I've seen that bug out before and not activate and simply reloading the module reactivates it. No luck here though. Any suggestions or ideas? Is there a network module on the rhel side of the machine that needs to be loaded for vmware to see or is that port tied directly in to that virtual enviroment?

Thanks,

Paul

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Post: nodes won't boot -- power off on some selected modules

Tue, 29 Apr 2008 10:02:10 EDT

When I try to boot the nodes, I get a message (below) saying that power is off to the nodes. The main power is obviously on, since I'm logged in to the SSP. I checked the internal connections and nothing appears to be unplugged. The NICs on the main board all have lights. I've added (but not yet configured) 4 SATA drives, but even when I pulled the power from them, the issue persists. What am I missing?

Thanks,
BC

sicortex-ssp ~ # scboot -p sca
/var/state/route_info.sca checks out OK!

Creating boot configuration

Setting up MSPs

Setting up node rootfs image

Halting all nodes
Restarting ev1d
* Stopping ev1d ... [ ok ]
* Starting ev1d ... [ ok ]

Starting Master Fabric Daemon
slurm_load_jobs error: Unable to contact slurm controller (connect failure)
slurm_load_part: Unable to contact slurm controller (connect failure)
slurm_update error: Unable to contact slurm controller (connect failure)
Trouble setting nodes to SLURM 'Idle' state.
Cleaning up FabriCache client partitions
Clearing event daemon state
Restarting syslog-ng
* Stopping syslog-ng ... [ ok ]
* Starting syslog-ng ... [ ok ]

Loading and booting linux
bamf: power is off to the nodes on sca-msp0 - turn it on before booting!
power off on some selected modules
Failed loading linux
Caught signal, cleaning up.
/sbin/scboot: line 326: 31983 Terminated ( trap - ${scboot_traps}; sleep "${msp_timeout}"; echo "TIMEOUT" >"${timeout_file}" )

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Post: Troubleshooting Guide?

Mon, 28 Apr 2008 13:38:10 EDT

The System Administration Guide makes several references to a document called the "Troubleshooting Guide." There was no such document included in the shipment, and I can't find it on the SiCortex website. Is this available somewhere that I missed?

Thanks,
BC

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Post: Running the SC072 headless

Wed, 16 Apr 2008 12:13:51 EDT

We would really like to have our SC072 be able to run headless, as we typically use it remotely anyway.

Is it possible to automatically invoke the virtual machine and boot it without the need to run X? We were thinking of trying to switch from vmware-player to vmware-server, but we didn't know if this would work.

Thanks,
Jim

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Post: SSP setup in SC072

Tue, 15 Apr 2008 08:55:29 EDT

We have a SC072 system just arrived. Now it power up and is on our network. question here:

1. the SSP Workstation is just a standard RHEL 5 installation plus a VMWare player, which start the real SSP. Several administration issues here: first, I have to configure two IP for both the SSP-WS and the SSP; second, since the VMWare player relies on a Desktop or X-windows on the host system, I have to make sure those video/mouse/keyboard working anyway. Is this a normal setup? The admin guide does not mention this. why not just put in the SSP-WS.

2. The SSP, which is a guest VMWare appliance also serve as the rootfs server for the computation node. I believe there is some performance issue of file system access since you have to go through two system level for access file. I consider this a big issue. The admin guide says that the default rootfs node for SC072 is m0n8, but it is not the case with the system we have.

3.

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Post: User vs Admin Ethernet Ports

Mon, 07 Apr 2008 09:43:59 EDT

The SSP ethernet port is for the admin to log in to the machine to access the actual RHEL base machine it appears. So does that mean that if I hook up another ethernet cable to the other (user) ethernet port that it will allow users to directly log in to the VM environment directly or do all users need to log in through the main machine then ssh to the VM environment?

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Post: networking on SC072 VM

Fri, 04 Apr 2008 14:33:17 EDT

I have networking working on the RH side (IP address, route table and resolv.conf all set up properly by DHCP), but when the VM boots, it fails to get an IP address via dhcpcd (it times out). Even manually assiging an IP address to device "site" via ifconfig and manually setting the route table doesn't work.
Is there some config file I have to edit before booting the VM to get networking to work?

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Post: SW Raid on SC072?

Fri, 04 Apr 2008 08:11:04 EDT

I've attached some disks to my SC072 via SATA-PCIe adapter cards. Each of 3 nodes has two disks. Is there some way to combine pairs of disks as raid 0?
The nodes don't seem to have mdadm installed.

Forum: SC072-PDS Forum

Post: Can't mount ssp-ws:/local on ssp (No route to host)

Post: external LDAP server configuration

Post: SSP site DHCP issue

Post: Disk and RAM capacity Questions

Post: [SC072] /etc/modprobe.conf contains wrong ethernet drivers?

Post: User Ethernet Port not Activating

Post: nodes won't boot -- power off on some selected modules

Post: Troubleshooting Guide?

Post: Running the SC072 headless

Post: SSP setup in SC072

Post: User vs Admin Ethernet Ports

Post: networking on SC072 VM

Post: SW Raid on SC072?

Post: SC072-PDS Support