<div dir="ltr"><div style>Hello Wannier Mailing Group,</div><div style><br></div><div style>I am a new user of Wannier90. I have compiled Wannier90-2.0.0 on the NERSC machine Edison, which uses an Intel compiler.</div><div style>
<br></div><div style>The below happens when I run postw90 to calculate Projected DOS calculations on a subset of Wannier functions.</div><div style><br></div><div style>Using the default optimization flag in the make.sys file</div>
<div style><br></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div style><div style>FCOPTS=-O2</div></div><div style><div style>LDOPTS=-O2</div></div></blockquote><div style><div><br></div><div style>
postw90 produces the error message </div><div><br></div></div><blockquote style="margin:0 0 0 40px;border:none;padding:0px"><div style><div style>forrtl: severe (174): SIGSEGV, segmentation fault occurred </div></div></blockquote>
<div style><div><br></div><div style>and the execution is terminated.</div><div><br></div><div style>Modifying the make.sys file to include more debugging flags</div><div style><br></div></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px">
<div style><div style>FCOPTS=-O2 -g -traceback -check all -fp-stack-check</div></div><div style><div style>LDOPTS=-O2 -g -traceback -check all -fp-stack-check</div></div></blockquote><div style><div><br></div></div><div style>
produces the messages</div><div><br></div><blockquote style="margin:0px 0px 0px 40px;border:none;padding:0px"><div style>forrtl: warning (402): fort: (1): In call to KMESH_GET_BVECTORS, an array temporary was created for argument #4</div>
<div style><br></div><div style>forrtl: warning (402): fort: (1): In call to I/O Write routine, an array temporary was created for argument #2</div></blockquote><div><br></div><div style>for each processor, and now postw90 executes successfully.</div>
<div><br></div><div style>I am unsure if the developers and the community are aware of this problem or possible bug fixes in postw90/dos.F90.</div><div style><br></div><div style>Thank you,</div><div style>Bradford Barker</div>
<div style>University of California, Berkeley</div></div>