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Special Forums UNIX and Linux Applications High Performance Computing Benchmarking a Beowulf Cluster Post 302314858 by mercthunder on Sunday 10th of May 2009 10:33:36 PM
Old 05-10-2009
Quote:
Originally Posted by otheus
Several points:
  • The number of processor-cores you run this thing on must match the product of P and Q. So if P is 2 and Q is 4, you will need 8 cores; no more, no less
  • If you provide MPICH with -np 8 and you specify a machine file, it expects at least that number of hosts in the machine file. If a host has multiple processor-cores (in your case, yes of course), you enter the hostname for each core. So if machine1 has 8 processor cores, your machinefile should include 8 lines of "machine1".
Hi Otheus, i have tried what you have stated, and i am still getting the error:

HPL ERROR from process # 0, on line 621 of function HPL_pdinfo:
>>> Illegal input in file HPL.dat. Exiting ... <<<

I am using 2 nodes including the head node, so 2 in total. Each of these nodes is a quad core system. So my machine file has this in it:
machine1
machine1
machine1
machine1
machine2
machine2
machine2
machine2

The command execution line i am typing in is:

mpirun -np 8 -machinefile hosts xhpl_em64t

p*q = 8 from my HPL.dat file, where p = 2 , and q = 4.

Yet still i am getting that error. Would you happen to know what else could be wrong?

Thanks.
 

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scsetup(1M)						  System Administration Commands					       scsetup(1M)

NAME
scsetup - interactive cluster configuration tool SYNOPSIS
scsetup [-f logfile] DESCRIPTION
Note - Beginning with the Sun Cluster 3.2 release, Sun Cluster software includes an object-oriented command set. Although Sun Cluster software still supports the original command set, Sun Cluster procedural documentation uses only the object-oriented command set. For more infor- mation about the object-oriented command set, see the Intro(1CL) man page. The scsetup command provides the following configuration capabilities, depending on what state the cluster is in when you issue the com- mand: o When you run the scsetup command at post-installation time, the command performs initial setup tasks, such as configuring quorum devices and resetting the installmode property. If you did not use automatic quorum configuration when you created the cluster, run the scsetup command immediately after the cluster is installed. Ensure that all nodes have joined the cluster before you run the scsetup command and reset the installmode property. If you used automatic quorum configuration when you created the cluster, you do not need to run the scsetup command after clus- ter installation. The automatic quorum configuration feature also resets the installmode property of the cluster. o When you run the command during normal cluster operation, the scsetup command provides a menu-driven utility. You can use this utility to perform most ongoing cluster-administration tasks. o When you issue the command from a node that is in noncluster mode, the scsetup utility provides a menu-driven utility for chang- ing and displaying the private IP address range. You must reboot all nodes into noncluster mode before you start this form of the scsetup utility. You can issue the scsetup command from any node in the cluster. You can use this command only in the global zone. OPTIONS
The following options are supported: -f logfile Specifies the name of a log file to which commands can be logged. If you specify this option, most command sets that the scsetup utility generates are run and logged, or only logged, depending on user responses. ATTRIBUTES
See attributes(5) for descriptions of the following attributes. +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsczu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
Intro(1CL), cltelemetryattribute(1CL), cldevicegroup(1CL), clnode(1CL), clquorum(1CL), clreslogicalhostname(1CL), clresourcegroup(1CL), clresourcetype(1CL), clressharedaddress(1CL), cluster(1CL), Sun Cluster 3.2 18 Jul 2006 scsetup(1M)
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