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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LEARN ABOUT CENTOS
cpupower
CPUPOWER(1) cpupower Manual CPUPOWER(1)
NAME
cpupower - Shows and sets processor power related values
SYNOPSIS
cpupower [ -c cpulist ] <command> [ARGS]
cpupower -v|--version
cpupower -h|--help
DESCRIPTION
cpupower is a collection of tools to examine and tune power saving related features of your processor.
The manpages of the commands (cpupower-<command>(1)) provide detailed descriptions of supported features. Run cpupower help to get an over-
view of supported commands.
Options
--help, -h
Shows supported commands and general usage.
--cpu cpulist, -c cpulist
Only show or set values for specific cores. This option is not supported by all commands, details can be found in the manpages of the
commands.
Some commands access all cores (typically the *-set commands), some only the first core (typically the *-info commands) by default.
The syntax for <cpulist> is based on how the kernel exports CPU bitmasks via sysfs files. Some examples:
Input Equivalent to
all all cores
0-3 0,1,2,3
0-7:2 0,2,4,6
1,3,5-7 1,3,5,6,7
0-3:2,8-15:4 0,2,8,12
--version, -v
Print the package name and version number.
SEE ALSO
cpupower-set(1), cpupower-info(1), cpupower-idle(1), cpupower-frequency-set(1), cpupower-frequency-info(1), cpupower-monitor(1), power-
top(1)
AUTHORS
--perf-bias parts written by Len Brown <len.brown@intel.com>
Thomas Renninger <trenn@suse.de>
07/03/2011 CPUPOWER(1)