<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">dear ...<br>your program execution time will always differ from previous execution.... <br>the reason behind this is nothig but the system call/bus used by your program... It is impossible to make it constant for every execution .... <br><br>if you get any way for making its execution time constant then please forward me....<br><br><div><font class="Apple-style-span" color="#ff4040">Pratik Agrawal</font></div><div><font class="Apple-style-span" color="#ff4040">Contact: +91-94287-63145</font></div><div><font class="Apple-style-span" color="#ff4040">Twitter: http://www/twitter.com/praxvoper</font></div><div><font class="Apple-style-span" color="#ff4040">http://www.pratikagrawal.x10.mx</font></div><div><font class="Apple-style-span" color="#ff4040"><br></font></div><br><br>--- On <b>Sat, 15/5/10, sankar s <i><keanesankar@gmail.com></i></b>
wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: sankar s <keanesankar@gmail.com><br>Subject: [mpich-discuss] Program execution time:<br>To: mpich-discuss@mcs.anl.gov<br>Date: Saturday, 15 May, 2010, 5:52 PM<br><br><div id="yiv497406656">Hi,<br><br>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.<br><br>start=gettickcount() ;<br>{<br>
code<br>}<br>end=gettickcount();<br>time=end-start();<br><br>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.<br>
<br> Is there any way to measure exact execution time in c.Which will not change every time, when I run the program.?<br><br><br><br>Thanks<br> <br>
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