C POSIX: Analyze a Boggle board using 100% CPU on a quad core.
I have written the worlds most advanced lexicon data structure in order to score a Boggle Board using a parallel algorithm.
I ran into a problem. Using mutexes and condition variables did not allow me to use 100% of the CPU resources on my quad core Q9450.
I wonder if the problem is that the worker threads call the same recursive function many thousands, to millions of times per second.
Should each thread have its own identical recursive function defined so that they are not all waiting to access the memory where the function is stored?
I would like to understand how many number of CPUs and cores do I have on my server based on following out put..
Few observations... Please correct me if I am wrong
Since Physical ID is same CPU is singe
It has 8 virtual processors
Hyper thrading is enabled since no of siblings are... (1 Reply)
please help
does a cpu/memory module have a firmware ?? and do i need to check it before install the cpu/memory module in the motherboard ??
thnx (2 Replies)
hi every body
i want to know if i have server with hp-ux os if i did "machinfo" i will see no of cpu = for example 16
how can i know this is dual or quad core .
thanks (2 Replies)
Hi,
I have 2 physical processor UltraSPARC-T2 with 32 virtual processors
I want to execute a perl program on 10 virtual processors.
I try prset command, but I don't see a difference.
psrset -c "created processor set 2" 1 2 3 4 5 6 7 8 9 10"
psrset -b 2 `pgrep program.pl`
Maybe... (8 Replies)
Hi Friends-
What does it mean by 2 cpu cores, 3 cpu cores? Does it mean 2 separate cpus or what is it exactly ?
Kindly explain a bit in detail.
Thanks
panditt (4 Replies)
Hi,
what is concept of core in ibm platform?
I want to know how to find out no of core in cpu in aix i.e command
how to find out value of core?
Wheather any specification is there? (1 Reply)
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)
