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.

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38 views

hostname and canonical name don't match in HPC server

I set up an HPC cluster successfully. I'd like to use matlab parallel computing to use all of computers in the cluster. I've created mjs and all of nodes are connected and running correctly. But when ...
2
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1answer
109 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) ...
0
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1answer
204 views

HPC Cluster (SLURM): recommended ways to set up a secure and stable system

I'm working with a SLURM driven HPC Cluster, containing of 1 control node and 34 computation nodes and since the current system is not exactly very stable I'm looking for guidelines or best practices ...
1
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1answer
36 views

Parallel filesystem which schedules simultaneous file requests to mutually exclusive sets of OSSs

My environment is RHEL based, interconnect is infiniband. I have some experience with Lustre. What i want to know is: Is there a parallel file-system, where if simultaneous write request arrive, ...
0
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0answers
40 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 ...
1
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1answer
104 views

Windows VMs on ScaleMP cluster?

I was wondering whether the following stack would work, and if so then how well, and what sort of problems I might expect to encounter when setting it up? Hardware layer - lots of cheap servers SMP ...
0
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1answer
348 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 ...
1
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0answers
150 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 ...
0
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1answer
34 views

Running jobs in a HPC cluster [closed]

I'm quite new to HPC environment. Is there any difference in running a job on a node utilizing 8 cores and running the same job on 8 nodes utilizing I core in terms of performance or walltime used. ...
6
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1answer
1k views

XFS Adding Quotas - Skip Quota check on first mount/boot

We run a 14TB XFS fileserver on our cluster and want to add quota support. This is running 3.9.2-1.el6.elrepo.x86_64 kernel under CentOS 6.3 (Final). The issue is when we unmount the XFS RAID, and ...
0
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0answers
372 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
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0answers
74 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
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2answers
225 views

Running ScaleMP on top of OpenStack [closed]

Looking for a feedback if anyone has already played with running ScaleMP linux appliances in OpenStack (KVM)? A short description of the setup (w/ or w/o InfiniBand, total amount of RAM, etc) and its ...
1
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3answers
169 views

Appropriate network file system for huge (5+ Gb) files

I've got a number of servers used for HPC / cluster computing and I noticed that, given the fact that part of the computations they run use huge files over NFS, this causes significant bottlenecks. ...
0
votes
1answer
46 views

How do we configure Lustre to block client requests when under load, rather than failing?

We are using Lustre in a cluster with approximately 200TB of storage, 12 Object Storage Targets (that connect to a DDN storage system using QDR Infiniband), and roughly 160 quad and 8-core compute ...
0
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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, ...
6
votes
4answers
955 views

using i7 “gamer” cpu in a HPC cluster

I'm running WRF weather model. That's a ram intensive, highly parallel application. I need to build a HPC cluster for that. I use 10GB infiniband interconnect. WRF doesn't depends of core count, but ...
2
votes
1answer
372 views

Does Xeon Phi works with i7 CPUs

Does Xeon Phi coprossesors works with i7 CPUs ? It's advertised for use with Xeons, but for my app (WRF), i7-3930k performs better and is 3 times cheaper than high grade xeons. So I wonder if I could ...
1
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1answer
168 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 ...
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1answer
315 views

HPC Cluster planning workflow? [closed]

After three days of intensive Google searching, I have not found any high-level workflow of how to build a low profile - cheap - computing cluster (we are not interested in HA yet). This is just a ...
2
votes
1answer
99 views

Microsoft HPC cluster - AD or AD LDS?

The instructions for deploying an HPC Cluster (e.g. step 1.5 on this page in TechNet) are very clear that HPC cluster nodes "must be members of an Active Directory domain". Does the Active Directory ...
2
votes
1answer
258 views

What makes Lustre faster and more scalable than NFS?

I have read in various places (e.g. here and here) that NFS' I/O performance does not scale, while Lustre's does, and that Lustre can deliver better I/O rates in general. There seem to be various ...
8
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6answers
2k views

How to allow users to transfer files to other users on linux

We have an environment of a few thousand users running applications on about 40 clusters ranging in size from 20 compute nodes to 98,000 compute nodes. Users on these systems generate massive files ...
3
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2answers
1k views

View Infiniband routing table generated by OpenSM?

As I understand it, the subnet manager of an Infiniband network calculates the best routes between each pair of nodes on the network and provides these routes to the nodes when they want to ...
3
votes
1answer
303 views

Which is the fastest way to move 1Petabyte from one storage to a new one?

First of all, thanks for reading, and sorry for asking something related to my job. I understand that this is something that I should solve by myself but as you will see its something a bit difficult. ...
1
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1answer
51 views

HPC OSS Node issue with unreadable local hdd error

We have a HPC setup with four OSS server(OSS1 to OSS4) and two MDS Nodes(MDS1 to MDS2) It has been running till yesterday without any problem. Today morning i found that OSS4 is in shutdown ...
0
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1answer
56 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
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1answer
654 views

Torque and maui node status

I am new for torque and maui. I was checking for node state to looking for which nodes are free and which nodes are in use. For torque one command is pbsnodes. Which gives status and other info ...
0
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2answers
66 views

low performance on HPC cluster (sge) when running multiple jobs

O know this is a long-shot but I'm clueless here. I'm running several computer simulations on High Performance Computation cluster (HPC) of oracale grid engine (sge). A single job runs at a certain ...
3
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4answers
7k views

Set up simple Infiniband Block Storage (SRP or iSER)

I'm trying to figure out how to set up a simple storage system which exports block storage over Infiniband, using either SRP or iSER. I'm very early in the process, and at the moment I'm basically ...
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votes
1answer
197 views

Why do supercomputers take up a whole room? [closed]

Some pictures regarding the Texas Advanced Computing Center (one I am currently interested in) here: http://www.tacc.utexas.edu/resources/hpc/ If you see the two supercomputers they have, Lonestar ...
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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
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1answer
314 views

Non-exclusive job scheduling in PBS/Torque

The cluster resource manager Torque typically allocates compute nodes on an exclusive basis. However, when you have a lot of small jobs (like we do) running against multi-core compute nodes, this can ...
1
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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?
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2answers
43 views

hardware support for parallel file system

I am looking forward to use parallel file system using MPI in linux cluster. I am wondering if parallel file systems like lustre/Parallel Virtual File System require special hardware support(special ...
1
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1answer
367 views

Optimizing Linux Compute Cluster

I am setting up a supercomputing Linux cluster at work. We ran the most recent HPCC benchmarks using OpenMPI and GoToBlas2 but got really bad results. When I ran the benchmarks using one process for ...
0
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3answers
105 views

Building Windows Clusters [closed]

I'm a research student and I want to build a windows cluster at home with my laptops to test my parallel codes. The problem is I'm using Windows 7 Home Premium, not a server edition. I'm using ...
2
votes
2answers
103 views

Simulate HPC application data to test WAN filesystem performance over a large link

So here is the setup: we've got temporary access to a very large TCP WAN connection and we want to use this pipe to do WAN filesystem testing. We would like to generate massive amounts of data on ...
3
votes
1answer
6k views

Display or install Windows product key on command line

We are currently in the process of setting up several Windows HPC clusters using Windows 2008 HPC R2. We would like to be able to perform Windows licensing commands across the clusters via the ...
1
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2answers
355 views

Task spooler for computing server on Debian

Recently our university has bought an computing server with one multi-core Xeon and 4 powerfull GeForce videocard for lessons on discipline "High perfomance computing with CUDA". There is Debian ...
0
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2answers
152 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 ...
1
vote
4answers
2k views

A dozen mac mini's vs dell rack server for parallel image processing [closed]

I need to do some large scale image processing in parallel. I was thinking of running a dozen Mac Mini's in parallel to do the data processing. I need to run Microsoft Windows on the machines so I ...
2
votes
1answer
376 views

Management of available file descriptors within a Hadoop cluster

I'm currently in charge of a rapidly-growing Hadoop cluster for my employer, currently built upon release 0.21.0 with CentOS as the OS for each worker and master node. I've worked through most of the ...
0
votes
1answer
179 views

Python Version for HPC with Numpy/Scipy

I am looking to setup an HPC cluster so that it has a modern installation of Python with Numpy/Scipy on the compute nodes. The version of Linux we are using has Python 2.4 installed by default. I ...
2
votes
1answer
73 views

Is Ondemand Governor enabled in current HPC clusters?

Will enabling Ondemand GOvernor on HPC cluster help save power ? Are sleep states (C-states) enabled in HPC platforms ? If not, what is the reason behind this ?
1
vote
1answer
309 views

Can't force HPZ600 workstation into PXE

I've got a HPC 2008 cluster of HP Z600 workstatsions, and though my head node can add them to the cluster (using node.xml files), and can reboot them, when the Z600 powers on the PXE attempt just ...
0
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2answers
193 views

What is the OSPM Power management feature in current HPC clusters?

What does the operating system do in ordder to manage power in current HPC clusters ? What are the functionalities embedded in current HPC clusters in order to save power
2
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2answers
2k views

Alternative to ScaleMP?

Anyone know of an alternative to ScaleMP? They let several x86 boxes boot as one large box. Theoretically AMD's hypertransport should allow the same thing. Any other companies or OSS projects doing ...
1
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4answers
204 views

high level server design/programming question [closed]

I am interested in designing a simple lan based server which accepts and services a limited number of connections ( < 25) from within the lan at any time. The server generates images dynamically ...
1
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1answer
231 views

What cluster management software does there exist for Windows, except for MS HPC Server?

Do there exist any open-source solutions? Perhaps, cheaper commercial ones? I'm surprised that googling does not yield anything meaningful for me.