<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
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--></style></head><body lang=EN-US style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>Dear users,</p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>I am trying to run pw.x in a cluster (centos) that requires loading three modules: intel, impi, and quantum-espresso. Now, I am getting an error saying: `pw.x: error while loading shared libraries: libfftw3.so.3: cannot open shared object file: No such file or directory`. According to the instruction I find in QE troubleshooting guide, I added the `export LD_LIBRARY_PATH=/lib64:"$LD_LIBRARY_PATH"` line in my script because libfftw3.so.3 exists in `/lib64/`. However, it still gives the same error.</p><p class=MsoNormal> </p><p class=MsoNormal>So, I ran a `ldd pw.x` command to check what happened, and I saw that:</p><p class=MsoNormal>... (truncated ) </p><p class=MsoNormal>libmkl_scalapack_ilp64.so => /opt/intel/compilers_and_libraries_2019.4.243/linux/mkl/lib/intel64_lin/libmkl_scalapack_ilp64.so (0x00007fe15c6ea000)</p><p class=MsoNormal>libfftw3.so.3 => Not found</p><p class=MsoNormal>... (truncated) </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>That means only libfftw3.so.3 is not linked. When I checked the value of $LD_LIBRARY_PATH, it successfully added the `/lib64` part but still I get the same error. What could be the reason for this error? Do I need to recompile QE? The version of QE running is 6.4.1. Thanks. </p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Sincerely,</p><p class=MsoNormal>Abdul Muhaymin</p><p class=MsoNormal>Undergraduate – Bilkent University</p><p class=MsoNormal><o:p> </o:p></p></div></body></html>