High Performance Computing encompasses using "supercomputers" with high numbers of CPUs, large storage systems and advanced networks to do time-consuming calculations. Parallel algorithms and parallelization of storage are essential to this field, as well as issues with complex, fast networks.

learn more… | top users | synonyms

1
vote
2answers
52 views

HPC 2008 Time Share Single Core (Fractional Resource Scheduling)

Windows HPC 2008 appears to be restricted to one task per core. Is there anyway to time share multiple tasks (or jobs) over a single core?
1
vote
2answers
333 views

Windows HPC Server 2008: private network across VMs?

Windows HPC Server 2008 provides the option to automatically deploy OS images to new cluster node, using Windows Deployment Services. However, this requires the HPC cluster to be set up with a ...
0
votes
2answers
150 views

NFS denies mount, even though the client is listed in exports

We have a couple of servers (part of an HPC cluster) in which we're currently seeing some NFS behavior which is not making sense to me. node1 exports its /lscratch directory via NFS to node2, mounted ...
2
votes
1answer
91 views

Building Windows server cluster hpc

I'm trying to set up a Windows Server cluster with a head node and 2x compute nodes. So far, i've managed to install : (thanks to this tutorial http://msdn.microsoft.com/en-us/library/jj884142.aspx) ...
1
vote
1answer
160 views

Open MPI can't launch remote nodes via SSH

I am trying to set up Open MPI between a few machines on out network. Open MPI works fine locally, but I just can't get it to work on a remote node. I can ssh into the remote machine (without ...
0
votes
1answer
303 views

Numerous pbs_server errors in /var/log/messages

On supercomputer's management node we receive numerous errors such as: pbs_server: LOG_ERROR::is_request, bad attempt to connect from 10.10.0.254:1023 (address not trusted - check entry in ...
0
votes
1answer
55 views

Windows HPC Server 2008 R2 SP3 upgrade

It's not clear to me from reading the documentation if I must update the clients, or whether I can just update the head node and compute nodes. Does anyone have any experience of this? I don't want ...
1
vote
0answers
149 views

HPC / EC2 - optimizing NFS for relialibility

In AWS-EC2, I've set-up a cluster of linux virtual machines made of an NFS fileserver and many clients. If the number of clients is above ~20, under heavy I/O, I am experiencing loss of file ...
1
vote
0answers
58 views

Programs running in an NX session seem to pause when session disconnects

We are currently running an interactive HPC application which presents a graphical interface to the user, attaches to an HPC cluster and allows them to run and observe some computation. The user logs ...
0
votes
0answers
39 views

Job's dependency on Windows HPC Cluster Manager

I'm using Microsoft HPC 2008 R2 Cluster Manager and I need to add dependency between several jobs (the second jobs can't run while the first one is still running) but I found out that Microsoft has ...
0
votes
0answers
363 views

Setting up computational cluster using infiniband fails

My task: I need to assemble computational cluster, consists of two nodes using infiniband technology. When I try to start mpirun ... for two nodes, the process hangs. If i try to use flag ...
0
votes
0answers
73 views

Microsoft HPC: mixing windows and linux blades

I have a working Windows HPC cluster with 32 blades, all of them are using Windows HPC. My question is: can I install Linux on 16 blades and keep the other 16 on Windows? Is there a specific version ...
0
votes
0answers
47 views

Job run-time variations on dual socket computer

I'm running scientific software (WRF-NMM, atmosphere simulation, weather prediction). On all computers I used it, job running times of run cycles were consistent. All those machines were one socket, ...