[mpich-discuss] Program execution time:

[jayesh at mcs.anl.gov]

Hi,
 Any reason you don't want to use MPI_Wtime() ? Can you send us a test program ?

Regards,
Jayesh
----- Original Message -----
From: "sankar s" <keanesankar at gmail.com>
To: mpich-discuss at mcs.anl.gov
Sent: Saturday, May 15, 2010 7:22:38 AM GMT -06:00 US/Canada Central
Subject: [mpich-discuss] Program execution time:


Hi, 

I have developed a simulation program in c using MPI. I am using gettickcount() function to find time taken in each core for executing this program in a core2 duo processor. 

start=gettickcount() ; 
{ 
code 
} 
end=gettickcount(); 
time=end-start(); 

Its working properly but each time when I ran this code, its giving different execution times. its happening for my sequential code without MPI also. I am using Windows vista, DELL core 2 duo processor. 

Is there any way to measure exact execution time in c.Which will not change every time, when I run the program.? 



Thanks 


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