2006/9/14, Mark Abraham <[EMAIL PROTECTED]>:
Probably your interconnects between nodes are using carrier pigeons orsomething :-) I expect that 1 cpu on machine A will require around fourtimes as long as 1 4-cpu node, which you can presumably test for yourself.
It is forbidden to run only one cpu o
On Thursday 14 September 2006 09:53, Mark Abraham wrote:
> Qiao Baofu wrote:
> > Hi,
> >
> > Thanks. I have test different cpus. Our institute has two clusters: one
> > is each node has 4 cpu (A), one is one node has only 1 cpu (B). I made
> > different tests on the two clusters and my local comp
Qiao Baofu wrote:
Hi,
Thanks. I have test different cpus. Our institute has two clusters: one
is each node has 4 cpu (A), one is one node has only 1 cpu (B). I made
different tests on the two clusters and my local computer using the same
system. See the following result:
A (For 1 hou
Hi,Thanks. I have test different cpus. Our institute has two clusters: one is each node has 4 cpu (A), one is one node has only 1 cpu (B). I made different tests on the two clusters and my local computer using the same system. See the following result:
A (For 1 hour) # of cpus ; MD s
> You have to
> find your optimum making some tests with your settings. To do that you can
> start your simulation and interrupt after a while to have some data logged
> in the log file. Then, from the information in that log file you can
> estimate the time that the whole task will take and compar
Well, there is a common misconception with parallel computing. Usually, you
will have an optimun number of processors that guarantees the best
performance. More or less than that number will result in a decreased
performance and longer computation times. The optimum number of processors
will de
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