The OPAL Discussion Forum

["Dr. Simon Friederich" <s.friederich AT uni-mainz.de>]

Dear OPAL-Team,

I use pyOPALTools in the following way (example.h5 = global .h5-file including all phase space information, mon1.h5 = monitor output):

    from opal.opal import load_dataset

    h5file = load_dataset(".", fname="example.h5")
    mon1 = load_dataset(".", fname="mon1.h5")

Which works perfectly well.

Problem:
While having these commands executed in an interactive python shell or application, the OPAL terminal prints:

Error>     boost::filesystem::remove: Text file busy: "mon1.h5"

if I want to rerun the simulation simultanously.

Of course I understand what the error wants to tell me, but what I don't understand is, why does the global h5-file not lead to the error (or vice versa: why does the monitor output; both are of the same filetype after being instanciated). And following up: Can you tell me how to circumvent the locking. The "with open()"-like aproach "with load_dataset(...) as f: tmp = f" which normaly is used in such cases does not work due to an AttributError arising.

Thank you very much.

Best regards,

Simon

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Dr. Simon Friederich
Helmholtz-Institut Mainz
Kollaboration B/ACID
Johannes Gutenberg-Universität Mainz
Staudingerweg 18
55128 Mainz, Deutschland

Tel.: +49 (0)6131 39-23160
E-Mail: s.friederich AT uni-mainz.de
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