That error usually happens if the w2w executable file is compiled on a 64 bit operating system, but then it is copied and ran on a 32 bit operating system [ ]. You can probably use the Linux 'file' command [ ] to check if the w2w executable file is 32 bit or 64 bit:

$ cd ~/WIEN2k.14/
$ file w2w

(where $ is a bash terminal)

On 10/27/2015 12:15 AM, Yue-Wen Fang wrote:
Dear all,

During the execution of *x w2w* in order to compute the overlap matrix, it gave me some error shown below.

hcding@login1  ~/v1/subdir 14:54:07 >*x w2w*
~/WIEN2k.14/w2w: Exec format error. Wrong Architecture.
0.000u 0.000s 0:00.02 0.0%      0+0k 0+0io 0pf+0w
error: command   ~/WIEN2k.14/w2w w2w.def   failed

I googled this error but got no solutions. Could you help fix this?

Note that, before execution of x w2w, I have used "x lapw1' to compute the eigenvectors on full k-mesh. The verison of WIEN2k is the latest one, and the version of Python is 2.7.2.


Yue-Wen FANG, PhD candidate
East China Normal University
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