Respected Prof. Paolo Giannozzi, Lorenzo Paulatto, Ali Tavana and all QE users,<br><br>Thank you very much for your help.<br><br>Problem is solved with gfortran compiler ( gcc version 4.4.1 ). <br>All the tests and phonon calculations are working fine.<br>
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>did you pay real money for your compiler? complain with Intel.<br>
>If not, try a different compiler (or a different version of the<br>
>same compiler)<br><br>I used latest non-commercial version of intel fortran compiler.<br>Will try to check with other intel compilers.<br><br><br>>About one year ago I met a very similar problem with the sun compiler.<br>
>After a long debugging session I was able to track it to a specific<br>
>compiler bug: loop counter was not incremented at loop exit (for<br>
>sufficiently complicated loops). Reducing optimization to 1 for compiling<br>
>iotk solved the problem.<br><br>will try with -O1 flag.<br><br> <br>Sonu Kumar<br><br>Phd Student<br>Physics Department<br>Indian Institute of Technology <br>Delhi-110016, India<br>web:-<a href="http://www.iitd.ac.in/">http://www.iitd.ac.in/</a><br>