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<div class="moz-cite-prefix">Dear Roger,<br>
<br>
indeed we had this error also the Donders from time to time. We
tried to figure out where the error comes from, but then were not
quite able to find the source. However, we were using an older
version of acq2ftx back then, and with the new version there was
no such problem. but also the experiment I was running was much
shorter than before. <br>
Anyway, for us it helped to restart the computer (to reset the
shared memory segment) before each experiment and then hope for
the best. It would be great if you guys could have a closer look
at when this error shows up and what settings you are using. So,
e.g., how long does it take until the error shows up? What
channels are you streaming and at what sampling frequency? Under
what circumstances does the error not occur? Maybe also check the
time when it occurs, we had some trouble here once with a cronjob
running around noon :)<br>
<br>
I am sorry if this all does not really help you much, but I was
quite satisfied that it did work out for our experiments in the
end, so I did not spend much more time in investigating those
earlier cases were we did have this error as well. If you could
provide some more information though, we can maybe finally find
the source of this error.<br>
<br>
Best,<br>
Jörn<br>
<br>
On 9/6/2013 5:31 PM, Dr. Zimmermann wrote:<br>
</div>
<blockquote cite="mid:5229F547.4020507@UKE.Uni-Hamburg.de"
type="cite">Hi,
<br>
<br>
we've got frequent messages from the acq2ftx-program followed by a
stop of its data transmission:
<br>
<br>
.............
<br>
Data | 70 samples | ID= 397 | slot=596 | dT= 0.0 mT= 51.9
sT=1341.2
<br>
Internal converter thread does not keep up with the load.
<br>
Data | 70 samples | ID= 398 | slot=597 | dT= 0.0 mT= 51.9
sT=1341.1
<br>
Data | 70 samples | ID= 399 | slot=598 | dT= 0.1 mT= 51.9
sT=1341.0
<br>
Internal converter thread does not keep up with the load.
<br>
Data | 70 samples | ID= 400 | slot=599 | dT= 0.0 mT= 51.9
sT=1340.9
<br>
Internal converter thread does not keep up with the load.
<br>
Waiting (on 0)
<br>
Waiting (on 0)
<br>
Waiting (on 0)
<br>
...
<br>
<br>
This sounds as if there is a performance problem, most probably
with the CPU?
<br>
<br>
Does / Has this also happen/ed at the Donders? I wonder a bit
wether VSM has installed different types of PCs. Our PC has four
physical cores with 3.4GHz each which should normally be enough
for these tasks ...
<br>
<br>
Regards, Roger
<br>
--
<br>
<br>
Besuchen Sie uns auf: <a class="moz-txt-link-abbreviated" href="http://www.uke.de">www.uke.de</a>
<br>
_____________________________________________________________________
<br>
<br>
Universitätsklinikum Hamburg-Eppendorf; Körperschaft des
öffentlichen Rechts; Gerichtsstand: Hamburg
<br>
Vorstandsmitglieder: Prof. Dr. Martin Zeitz (Vorsitzender), Prof.
Dr. Dr. Uwe Koch-Gromus, Joachim Prölß, Rainer Schoppik
<br>
_____________________________________________________________________
<br>
<br>
SAVE PAPER - THINK BEFORE PRINTING
<br>
<br>
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<br>
<pre wrap="">_______________________________________________
fieldtrip mailing list
<a class="moz-txt-link-abbreviated" href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a>
<a class="moz-txt-link-freetext" href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a></pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
FieldTrip Development Team
P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands
Contact:
E-Mail: <a class="moz-txt-link-abbreviated" href="mailto:jm.horschig@donders.ru.nl">jm.horschig@donders.ru.nl</a>
Tel: +31-(0)24-36-68493
Web: <a class="moz-txt-link-freetext" href="http://www.ru.nl/donders">http://www.ru.nl/donders</a>
Visiting address:
Trigon, room 2.30
Kapittelweg 29
NL-6525 EN Nijmegen
The Netherlands</pre>
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