Todd,<br><br>You should tells us the following information.<br>1. compiler<br>2. math library<br>3. serial or parallel run<br>4. PWscf version<br><br><div class="gmail_quote">On Fri, Jun 13, 2008 at 3:35 PM, <<a href="mailto:beaudet@uiuc.edu">beaudet@uiuc.edu</a>> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">experienced PWscf users,<br>
<br>
I have compiled the code. When I run the Si example the code crashes after the second iteration...<br>
<br>
iteration # 2 ecut= 18.00 Ry beta=0.70<br>
CG style diagonalization<br>
ethr = 7.69E-04, avg # of iterations = 3.0<br>
p0_3521: p4_error: interrupt SIGSEGV: 11<br>
<br>
when I backtrace using a debugger I get the following:<br>
<br>
(gdb) backtrace<br>
#0 0x000000000050ed55 in __scf__mix_type_axpy ()<br>
#1 0x00000000004e2770 in mix_rho_ ()<br>
#2 0x00000000004cae58 in electrons_ ()<br>
#3 0x000000000040f39c in MAIN__ ()<br>
<br>
I suspect a problem with the environment when I compiled the code. I'm using Intel Core2 Quad CPU Q6600 and Ubuntu 8.04 - the Hardy Heron. Below is the input file I was using. Does anyone have a idea on how I might proceed? I can provide more information if necessary.<br>
<br>
&control<br>
calculation = 'scf'<br>
restart_mode='from_scratch',<br>
prefix='silicon',<br>
tstress = .true.<br>
tprnfor = .true.<br>
pseudo_dir = '/home/beaudet/espresso/espresso-4.0/pseudo/',<br>
outdir='/tmp/'<br>
/<br>
&system<br>
ibrav= 2, celldm(1) =10.20, nat= 2, ntyp= 1,<br>
ecutwfc =18.0,<br>
/<br>
&electrons<br>
diagonalization='cg'<br>
mixing_mode = 'plain'<br>
mixing_beta = 0.7<br>
conv_thr = 1.0d-8<br>
/<br>
ATOMIC_SPECIES<br>
Si 28.086 Si.vbc.UPF<br>
ATOMIC_POSITIONS<br>
Si 0.00 0.00 0.00<br>
Si 0.25 0.25 0.25<br>
K_POINTS<br>
10<br>
0.1250000 0.1250000 0.1250000 1.00<br>
0.1250000 0.1250000 0.3750000 3.00<br>
0.1250000 0.1250000 0.6250000 3.00<br>
0.1250000 0.1250000 0.8750000 3.00<br>
0.1250000 0.3750000 0.3750000 3.00<br>
0.1250000 0.3750000 0.6250000 6.00<br>
0.1250000 0.3750000 0.8750000 6.00<br>
0.1250000 0.6250000 0.6250000 3.00<br>
0.3750000 0.3750000 0.3750000 1.00<br>
0.3750000 0.3750000 0.6250000 3.00<br>
<br>
Thanks,<br>
<br>
Todd Beaudet<br>
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</blockquote></div><br><br clear="all"><br>-- <br>Nichols A. Romero, Ph.D.<br>DoD User Productivity Enhancement and Technology Transfer (PET) Group<br>High Performance Technologies, Inc.<br>Reston, VA<br>443-567-8328 (C)<br>
410-278-2692 (O)