This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
Home Products Support Community News


[Xen-users] Using Xen Virtualization Environment for Development and Tes

To: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] Using Xen Virtualization Environment for Development and Testing of Supercomputing and High Performance Computing (HPC) Cluster MPICH2 MPI-2 Applications
From: "Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>
Date: Fri, 30 Oct 2009 14:37:17 +0800
Cc: space.time.universe@xxxxxxxxx
Delivery-date: Thu, 29 Oct 2009 23:38:21 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:date:message-id:subject :from:to:cc:content-type; bh=h76T71vs9Hd0ySunMDZ4jfU3cRLcR18239HjjQlEOpo=; b=DTu7Rtkqo+g4L2RG95o4vVktnuZ9kQanP/mnc9d0d3trFOi1H9vO9aNbqoCTpIWJmN 3Oan+sZmJ3jBFwFg5zF876XT8FWHZpY3jEQnJpdrjtto/3UfQjsYqCkQ7klx6++7xUaD 6vGsWXVONvRsra/fftFR5UjZ4fUZXdBCFVf4A=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:date:message-id:subject:from:to:cc:content-type; b=sZErgoS1hDqTBCvvGXvJ9GmVOdtUR+s4+HPvR3xFq0c9lEKHjIlJBwSJT3Tb1hTXB7 71NXbfXyL7t0Y8AwtuC/2tOafW6Uw7rgmU9n6Mm4NiG+Vx5hjFKVzY1YJOfs5Fj2fmd8 0D5mzHizAKT8ilWqPQVIcJ/Ys+xAvdyzYj6GI=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-users-request@lists.xensource.com?subject=help>
List-id: Xen user discussion <xen-users.lists.xensource.com>
List-post: <mailto:xen-users@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-users>, <mailto:xen-users-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
Dear All,

I have created a virtual high performance computing (HPC) cluster of 6 compute nodes with MPICH2 using Xen-based Fedora 11 Linux 64-bit paravirtualized (PV) domU guests. Dom0 is Fedora 11 Linux 64-bit. My Intel Desktop Board DQ45CB has a single onboard Gigabit LAN network adapter.

I am able to bring up the ring of mpd on the set of 6 compute nodes. However, I am consistently encountering the "(mpiexec 392): no msg recvd from mpd when expecting ack of request" error.

After much troubleshooting, I have found that there are Receive Errors (RX-ERR) in the virtual network interface eth0 of all the six compute nodes. All the 6 compute nodes are identical F11 linux 64-bit PV virtual machines.

Here is my PV guest configuration for node 1:

[enming@fedora11-x86-64-host xen]$ cat enming-f11-pv-hpc-node0001
disk = ['phy:/dev/virtualmachines/f11-pv-hpc-node0001,xvda,w' ]
vif = [ 'mac=00:16:3E:69:E9:11,bridge=eth0' ]
vfb = [ 'vnc=1,vncunused=1,vncdisplay=0,vnclisten=,vncpasswd=' ]
bootloader = "/usr/bin/pygrub"
#kernel = "/home/enming/fedora11/vmlinuz"
#ramdisk = "/home/enming/fedora11/initrd.img"
Will there be any problems with Xen networking for MPICH2 applications? Or it's just a fine-tuning exercise for Xen networking? I am using PV guests because PV guests have much higher performance than HVM guests.

Here are my mpich-discuss mailing list threads:






Please advise on the RX-ERR.

Thank you very much.

Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
My blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
My Youtube videos: http://www.youtube.com/user/enmingteo
Email: space.time.universe@xxxxxxxxx
MSN: teoenming@xxxxxxxxxxx
Mobile Phone (SingTel): +65-9648-9798
Mobile Phone (Starhub Prepaid): +65-8369-2618
Age: 31 (as at 30 Oct 2009)
Height: 1.78 meters
Race: Chinese
Dialect: Hokkien
Street: Bedok Reservoir Road
Country: Singapore
Xen-users mailing list
<Prev in Thread] Current Thread [Next in Thread>