Many commands in Mathematica 8 (Integrate, Simplify, etc.) seem to only be using a single core on my system. Is there any way I can change the affinity so that it utilizes all cores for computations?
View 3 Repliesdifference between make and make bzImage commands as both are used to build source code.
View 1 Replies View RelatedNewbie question here. I just realized that I can tell make to use multiple cores to compile by doing PHP Code:makewhich is just awesome on a quad core with hyperthreading (I just compiled 2.6.33-rc5 in under 5 minutes!) I know aliases are possible, though I've never had much need. What I would like to know now, is if it would be safe to alias make to mean PHP Code:so that by default I use 6 of the procesors when building or if there would be occasions that compiling on multiple processors would be a bad thing
View 10 Replies View RelatedI have a huge set of events in Mathematica that I need to react to, and it's not practical always checking for it, especially since events are randomly distributed in time.So I wanted to add a simple sound to remind me to go check the event. I wanted to use Beep[] but I get no results, in fact, I didn't realize till now that mathematica is making no sounds whatsoever.I use Debian Squeeze Stable and have no trouble with any other application using sound.
View 1 Replies View RelatedI Install Mathematica 4.0 on Ubuntu 10.04 and fedora 13. When i create new notebook file and save it, Mathematica front end automatically disappear. It shows message "Mathematica has received the signal: SIGSEGV and has exited" on terminal. But this not happing on older Linux version such as suse enterprise desktop 10. if i first create aaa.nb file using vi editor i can open it with Mathematica front end and save it. but cannot do "save as option" and also cannot open edit-> preferences menu.
View 2 Replies View RelatedI want to make a file called file roller for Ubuntu 9.10. The folder has a file called install.sh and some others that are make.
I figure first I need to make a file and then run install.sh to install. But I don't know how to do this.
I've found myself using the -v flag for lots of applications less and less (especially for trivial stuff like tar and cp). However, when I did and I was, say, unzipping a large file, it would take longer than when I didn't use the -v flag.I assume this is because the terminal has to process the text and I'm filling up whatever buffer it might have. But my question is, does this make the application actually run slower or does it complete in the same amount of time and what I'm seeing is the terminal trying to catch up?
View 5 Replies View RelatedInterpreting the output of /etc/proc/cpuinfo.
This is a Linux Box.
Here is the output and I need to know how many CPUs we have and how many cores per CPU.
When I was using Virtual Box in Windows 7, I could choose how many CPU cores to assign to the guest OS. Now I'm using Linux, and when I installed Virtual Box, I couldn't find that option. System Monitor shows that when the VM is busy only one CPU core goes to 100% while the rest are near 0%. How can I make Virtual Box in Linux use multiple CPU cores?
View 2 Replies View RelatedI am using the standalone k10temp temperature sensor but it doesn't give the actual temperature of the cpu, just some "bogus" temp value that isn't very useful.Does anyone know how you can calculate the real temperature from this reading?
View 3 Replies View RelatedI'm an undergraduate Physics student, and I would like to install a software for helping me with relatively simple tasks, such as calculating integrals, plotting graphs and performing some general numerical calculations. Can someone indicate me a good software for these purposes, preferably an official Debian package?
View 11 Replies View RelatedI have a four-cores machine (core1,core2, core3, core4 ). I want to test the communication or latency between two cores (for example, core1 and core2; core3 and core4). Does anyone know how to write a code to test it under linux operating system?
View 1 Replies View RelatedI have a 8 core computer, which has 8 logical processor in total. I want to create 8 process(nodes). Each node is mapped to each logical processor. The order is code...
I wrote the code as below, could you please see whether it is correct? code...
I am new to the forum and new to Linux.
I am trying to explore if Linux can be run on a multicore platform when the max frequency of one the cores is less than the others.
please give me some pointers or let me know if you have tried such HW configuration.
There is a computer with two "Xeon(R) CPU X5550 @ 2.67GHz" CPU. The Hyper-threading is enabled, so it looks like 16-core system, but really there is only 8 physical cores.
I know that when hyperthreading is enabled, each physical core is splitted into two virtual cores. I want to know, which pair of virtual cores shares a physical core and which are not. Or, how (in what order) will Linux enumerate HT-cores comparing to real cores. (enumerating is done for sched_setaffinity and taskset masks).
I have a dump of /proc/cpuinfo file from the system.
I think there are possible:
CPU0-CPU7 are not sharing phys. core. CPU8-CPU15 too. But sharing is in pairs CPU0+CPU8, CPU(i)+CPU(i+8) and so on. or CPU0+CPU1 are from single physical, CPU2+CPU3, CPU(2*i)+CPU(2*i+1). or exotic CPU0+CPU15 sharing, CPU1+CPU14 ... or random?
The hard moment in this case is that there are 2 physical dies of CPU (two sockets), and usual recommendation of using "physical id:" field can't help
The cpuinfo:
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
[Code].....
Is there any easy way to Make a GUI for terminal commands?
View 2 Replies View RelatedI use Mathematica 7.0 through my school's SSH server. This involves:
-loading their font server via "xset fp+ tcp/c1.ucalgary.ca:7100"
-connecting to the SSH server via "ssh -X useruser@servername.ca"
-entering my password Then I choose to run Mathematica via ". use mathematica 7" then to load the GUI "mathematica".
Sometimes, and only sometimes, the screen goes to the error in the attached picture, stays there for about 5 seconds, brings me to the login screen. When I log in again, all of my applications that were running, open folders, and my terminal windows are closed.
I added this:
Code:
clear
fortune | cowsay | echo
to the bottom of my .profile expecting a cow to tell me a fun quote whenever i pull up a terminal. It hasn't done anything, however. How do I achieve my desired effect?
I'm installing Slackware 13.1 on a Samsung N150 netbook and am stuck trying to make the special keys do their normal functions when using a virtual terminal, that is not under X. Under X + Xfce it can be done via Menu->Settings->Keyboard->"Application Shortcuts".
In essence the question is how to make a special key (example Fn+Up to increase screen brightness) run a command in the background.
Changed title and text to make clear that the command should not run in a virtual terminal but while the display is being used for a virtual terminal, that is after Ctrl+Alt+F2 for example.
I am curious of how to make a GUI interface that uses multiple programs and commands. I have found wxwidgets as the most likely candidate for making my own interface.Is this the best programming language for a beginner?
View 3 Replies View RelatedOkay so I have an alias that looks like this:
Code:
ALIAS sorigin {
MSG sorigin Test1
[code]...
I am trying to install faac codecs on ubuntu 9.10 karmic.after running the configure and make commands i get this errors:
View 7 Replies View RelatedI have a question that i want to make a normal user to execute the commands which the root user is able to execute, say if i have a user named siru and when i logged in using siru i cannot run commands like tracert,nmap@loccalhost and all but i can run when i have logged into root account so my question is how to make siru to run the command tracert,nmap@localhost.I have even edited the .bash_profile of siru's home directory from
# .bash_profile
# Get the aliases and functions
if [ -f ~/.bashrc ]; then
[code]...
I started another thread about this to get help booting into openSUSE after Fedora rewrote my bootloader and deleted all other entries. I managed to fix it but I never did find out why the following commands caused my system to boot to the grub shell instead of the grub menu.
Code:
grub
root (hd0,3)
setup (hd0)
quit
reboot
Can anyone explain to me why these commands caused my system to boot directly to a grub shell? It's as if there were no /boot/grub/menu.lst files for it to use, but after I got everything back to normal, the files were still there.
If it helps, this is how the drive was setup before and now, except Fedora was on /dev/sda4 and has since been deleted.
Code:
Device Boot Start End Blocks Id System
/dev/sda1 1 262 2104483+ 82 Linux swap / Solaris
/dev/sda2 263 13316 104856255 83 Linux
/dev/sda3 * 13317 14621 10482412+ 83 Linux
JIt was easy to check in Windows, but I just wanted to know if there's a way to check if Ubuntu is utilizing both cores of my processor (Pentium Core 2 Duo).
View 9 Replies View RelatedI am attempting to Run Ubuntu 10.10 on a system with 128 CPU cores (64 dual core processors), but Ubuntu is only detecting 32 cores. I've looked and looked and cannot find any information on this topic; is there a core limitation in the kernel configuration that I missed? Currently I am using Ubuntu 10.10 Desktop, would I have more luck with 10.10 Server or another version?
View 9 Replies View RelatedAnybody knows How can I get the number of cores of a machine?I know that I can use POPEN and get the stream of this:
Code:
grep -i 'processor' /proc/cpuinfo | wc -l
But, I think that a simple method to do this.
I am getting an error as below.
How do I resolve the error: make[2]: *** No rule to make target `', needed by `mpg123'.
How can I resolve this error.
My previous OS was openSUSE 11.4 KDE. In system monitor I used to see frequency scaling of both cores . Know thats not a case. I have Dell Latitude D420, with Core Duo U2500 @ 1.20Ghz, using Debian testing (Wheezy) 32bit, GNOME. Please help! There is no purpose to use a system which drains max. half capacity of a machine. hOPE, that is not a case . How do I know if both cores are working?
View 6 Replies View RelatedI have a notebook with AMD Athlon 64 QL-62 2 cores CPU. Normally the temperature is 50-52 Celsius in idle but with Ubuntu 10.04 beta 2 idle temp is 60 Celsius. /proc/cpuinfo shows both cores on 1GHz which is good but still temp is higher than usual. I tried to find solution using Google but I didn't find anything.
View 1 Replies View Related