How to set processor with 2 core to parallel working

funny · 2009-11-25 14:16:32

I have a intel core2 duo with 32bit Arch.
I allow paralleling work in bios. In the system I see 2 processor and both are working. But they don't work together. I mean when processor A is comming up then processor B is comming down. When A working at 80% then B working only at 20%. I think they rotate with their work but never working together.

wuischke · 2009-11-25 16:00:39

Multicore is difficult, because many things are hard to do in parallel. In other words: Many tasks will only use one processor.

But just to see both processors at 99% you can do the following:

Open two terminals. Execute in both terminals the following code:

while [ 1 ]; do echo -n; done

This is a simple infinite loop in bash, which will "print nothing" and "stress" your CPUs. (Use Ctrl+C to end the loop.)

apaige · 2009-11-25 18:12:11

or:

openssl speed aes-256-cbc
openssl speed aes-256-cbc -multi 2

to see the benefits.

owain · 2009-11-25 19:35:22

More productively, you can use the relevant settings and put both cores to use when building from source.

funny · 2009-11-26 19:08:02

I know that if I wanna do somthing parallel I need have programs which has been written parallel. But when I try Fedora (I think it was 11) I think I saw some programs works as parallel.

Nagian · 2009-11-26 20:14:23

That has nothing to do with the distribution, the same programs should also work under arch parallel.

jowilkin · 2009-11-27 07:19:55

Almost all programs are still serial (only use 1 processor at a time), Nagian is right that this has nothing to do with the distribution.

Arch Linux

#1 2009-11-25 14:16:32

How to set processor with 2 core to parallel working

#2 2009-11-25 16:00:39

Re: How to set processor with 2 core to parallel working

#3 2009-11-25 18:12:11

Re: How to set processor with 2 core to parallel working

#4 2009-11-25 19:35:22

Re: How to set processor with 2 core to parallel working

#5 2009-11-26 19:08:02

Re: How to set processor with 2 core to parallel working

#6 2009-11-26 20:14:23

Re: How to set processor with 2 core to parallel working

#7 2009-11-27 07:19:55

Re: How to set processor with 2 core to parallel working

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