<div dir="auto">Ok, thank you so much. I try nfs.</div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, 22 Jun 2021, 2:58 am Phil Carns, <<a href="mailto:carns@mcs.anl.gov">carns@mcs.anl.gov</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>
<p>Ah, Ok. This is the problem then. The log directory has to be
on a shared file system (e.g. nfs, lustre, etc.) that is visible
to all nodes. The log is created and written using collective I/O
operations, so all of the ranks need to be able to access the same
file simultaneously.<br>
</p>
<p>I'll open a ticket to investigate if there is a way to produce a
more helpful error message in this case.</p>
<p>thanks,</p>
<p>-Phil<br>
</p>
<div>On 6/21/21 5:50 PM, Hassan Asghar
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">
<div class="gmail_default" style="font-family:arial,helvetica,sans-serif;font-size:small">it
is not shared directory, but i have install the same version
of darshan on the other nodes as well.</div>
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<div style="font-size:12.8px;font-family:arial,sans-serif">--</div>
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<div><span style="font-family:tahoma;font-size:13.3333px;color:rgb(0,0,0)">Regards,</span>
<div style="font-family:tahoma;font-size:13.3333px;color:rgb(0,0,0)"> </div>
<div style="font-family:tahoma;font-size:13.3333px;color:rgb(0,0,0)"><span style="color:rgb(51,0,102)"><b>Hassan Asghar</b></span></div>
<div style="font-family:tahoma;font-size:13.3333px;color:rgb(0,0,0)"><span style="color:rgb(51,51,102);font-size:13.3333px">MS Computer Science</span></div>
<div style="font-family:tahoma;font-size:13.3333px;color:rgb(0,0,0)"><span style="color:rgb(51,51,102)">Mobile: +92-321-1741755</span></div>
<span style="font-family:tahoma;font-size:13.3333px;color:rgb(51,51,102);font-size:13.3333px"></span><span style="color:rgb(0,0,0);font-family:tahoma;font-size:13.3333px;font-size:13.3333px"></span>
<div><span style="color:rgb(51,51,102);font-family:tahoma;font-size:13.3333px">Personal
Website: </span><font face="tahoma" color="#333366"><span style="font-size:13.3333px"><a href="http://bit.ly/2OQ0egs" target="_blank" rel="noreferrer">http://bit.ly/2OQ0egs</a></span></font></div>
<div style="font-family:tahoma;font-size:13.3333px;color:rgb(0,0,0)"><span style="color:rgb(51,51,102);font-size:13.3333px">Google Scholar</span>: <a href="https://bit.ly/3lVYuxF" target="_blank" rel="noreferrer">https://bit.ly/3lVYuxF</a></div>
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<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Mon, Jun 21, 2021 at 10:30
PM Phil Carns <<a href="mailto:carns@mcs.anl.gov" target="_blank" rel="noreferrer">carns@mcs.anl.gov</a>> wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div>
<p>Hi Hassan,</p>
<p>Is /darshan-logs/ a shared directory? <br>
</p>
<p>thanks,</p>
<p>-Phil<br>
</p>
<div>On 6/21/21 1:04 PM, Hassan Asghar wrote:<br>
</div>
<blockquote type="cite">
<div dir="auto">Yes, I have set the log path and all
permission are given when i run program on local machine
it execute successfully but when i exceute on three
nodes it show error.</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, 22 Jun 2021,
1:18 am Harms, Kevin, <<a href="mailto:harms@alcf.anl.gov" target="_blank" rel="noreferrer">harms@alcf.anl.gov</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Hassan,<br>
<br>
did you create the /darshan-logs directory? Looks
like it might not be writeable.<br>
<br>
try: /darshan-logs/2021/6/21<br>
<br>
if you want to try a quick test, set DARSHAN_LOGFILE
to the path/name of the log, like:<br>
<br>
DARSHAN_LOGFILE=/path/I/can/write/to/logfile.darshan<br>
<br>
kevin<br>
<br>
________________________________________<br>
From: Darshan-users <<a href="mailto:darshan-users-bounces@lists.mcs.anl.gov" rel="noreferrer noreferrer" target="_blank">darshan-users-bounces@lists.mcs.anl.gov</a>>
on behalf of Hassan Asghar <<a href="mailto:haxxanasghar@gmail.com" rel="noreferrer noreferrer" target="_blank">haxxanasghar@gmail.com</a>><br>
Sent: Monday, June 21, 2021 12:35 AM<br>
To: <a href="mailto:darshan-users@lists.mcs.anl.gov" rel="noreferrer noreferrer" target="_blank">darshan-users@lists.mcs.anl.gov</a><br>
Subject: [Darshan-users] Logs not generated inspite
throwing warning message<br>
<br>
I am running darshan with mpich on a three-node
cluster and my job executed successfully but not
generated logs. error warning is given below at the
end of the execution.<br>
<br>
[haxxanasghar@gpuserver2 ~]$ mpiexec -n 64 -f
machinefile -env LD_PRELOAD /usr/l
ocal/lib/libdarshan.so
./MADbench2 640 80 4 8 8 4 4<br>
<br>
MADbench 2.0 IO-mode<br>
no_pe = 64 no_pix = 640 no_bin = 80 no_gang = 4
sblocksize = 8 fblocksize =
8 r_mod = 4 w_mod = 4<br>
IOMETHOD = POSIX IOMODE = SYNC FILETYPE = UNIQUE
REMAP = CUSTOM<br>
<br>
S_cc 0.02 [ 0.02: 0.03]<br>
S_bw 0.01 [ 0.01: 0.01]<br>
S_w 0.03 [ 0.03: 0.04]<br>
-------<br>
S_total 0.07 [ 0.07: 0.07]<br>
<br>
W_cc 0.04 [ 0.03: 0.05]<br>
W_bw 0.22 [ 0.20: 0.23]<br>
W_r 0.02 [ 0.02: 0.02]<br>
W_w 0.01 [ 0.01: 0.01]<br>
-------<br>
W_total 0.28 [ 0.28: 0.29]<br>
<br>
C_cc 0.01 [ 0.01: 0.01]<br>
C_bw 0.00 [ 0.00: 0.00]<br>
C_r 0.01 [ 0.01: 0.01]<br>
-------<br>
C_total 0.02 [ 0.02: 0.02]<br>
<br>
<br>
dC[0] = 0.00000e+00<br>
darshan_library_warning: unable to create log file
/darshan-logs/2021/6/21/haxxa
nas_MADbench2_id29484-29484_6-21-52165-1341319014666854881.darshan_partial.<br>
[haxxanasghar@gpuserver2 ~]$<br>
<br>
<br>
--<br>
Regards,<br>
<br>
Hassan Asghar<br>
MS Computer Science<br>
Mobile: +92-321-1741755<br>
Personal Website: <a href="http://bit.ly/2OQ0egs" rel="noreferrer noreferrer noreferrer" target="_blank">http://bit.ly/2OQ0egs</a><br>
Google Scholar: <a href="https://bit.ly/3lVYuxF" rel="noreferrer noreferrer noreferrer" target="_blank">https://bit.ly/3lVYuxF</a><br>
</blockquote>
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