Hi,
i have one general question regarding the use of a dual Opteron CPU
using a smp kernel. I'm currently running a cpu intensive program that
use for some hours 100% of the cpu time. But having a look with top at
the processes it seems that only one CPU is doing the work at 100%: the
other
On 23/05/05, Marco Calviani [EMAIL PROTECTED] wrote:
Hi,
i have one general question regarding the use of a dual Opteron CPU
using a smp kernel. I'm currently running a cpu intensive program that
use for some hours 100% of the cpu time. But having a look with top at
the processes it seems
So, normally, even if i use an SMP kernel if i'm not telling the program
to use both CPU it will continue using only one CPU, right?
Regards,
MC
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Marco Calviani ha scritto:
So, normally, even if i use an SMP kernel if i'm not telling the
program to use both CPU it will continue using only one CPU, right?
Regards,
MC
By the way i'm using g77 to compile the program i'm running...
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On 23/05/05, Marco Calviani [EMAIL PROTECTED] wrote:
So, normally, even if i use an SMP kernel if i'm not telling the program
to use both CPU it will continue using only one CPU, right?
Yes, if the program isn't written to use both CPUs, it won't.
Cheers
Adam
Adam Mercer ha scritto:
On 23/05/05, Marco Calviani [EMAIL PROTECTED] wrote:
So, normally, even if i use an SMP kernel if i'm not telling the program
to use both CPU it will continue using only one CPU, right?
Yes, if the program isn't written to use both CPUs, it won't.
Cheers
In article [EMAIL PROTECTED],
Marco Calviani [EMAIL PROTECTED] wrote:
Adam Mercer ha scritto:
On 23/05/05, Marco Calviani [EMAIL PROTECTED] wrote:
So, normally, even if i use an SMP kernel if i'm not telling the program
to use both CPU it will continue using only one CPU, right?
Yes,
Miquel van Smoorenburg ha scritto:
You cannot run one program on two CPUs. It's simply not possible.
What you can do is split your program up into multiple programs
or threads, that you can run simultaneously - in that case, you
will use more than one CPU. But you need to redesign/rewrite
your
On Mon, 2005-05-23 at 09:30 +0200, Marco Calviani wrote:
Adam Mercer ha scritto:
On 23/05/05, Marco Calviani [EMAIL PROTECTED] wrote:
So, normally, even if i use an SMP kernel if i'm not telling the program
to use both CPU it will continue using only one CPU, right?
Yes, if
On Mon, 2005-05-23 at 10:34 +0200, Marco Calviani wrote:
Miquel van Smoorenburg ha scritto:
You cannot run one program on two CPUs. It's simply not possible.
What you can do is split your program up into multiple programs
or threads, that you can run simultaneously - in that case, you
On 2005-05-23 09:20:07 +0200, Marco Calviani
[EMAIL PROTECTED] said:
Hi,
i have one general question regarding the use of a dual Opteron CPU
using a smp kernel. I'm currently running a cpu intensive program that
use for some hours 100% of the cpu time. But having a look with top at
the
Walter Hoolwerf ha scritto:
the problem (probably) is, that your application isn't smp enabled,
like others said.
this means, that your application is designed to do one task at a
time, like for example, if you'd like to add 7 to 3 and put in in A,
and afterwards like to add 9 to 7 and
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