<font face="Verdana, Arial, Helvetica" size="2">Eric Greisen updated #11264<br />
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Accessing visibility data hangs<br />
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<div style="margin-left: 40px;">Ticket ID: 11264</div>
<div style="margin-left: 40px;">URL: <a href="https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/11264">https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/11264</a></div>
<div style="margin-left: 40px;">Name: Avery Garon</div>
<div style="margin-left: 40px;">Email address: <a href="mailto:garo0040@umn.edu">garo0040@umn.edu</a></div>
<div style="margin-left: 40px;">Creator: User</div>
<div style="margin-left: 40px;">Department: AIPS Data Reduction</div>
<div style="margin-left: 40px;">Staff (Owner): Eric Greisen</div>
<div style="margin-left: 40px;">Type: Issue</div>
<div style="margin-left: 40px;">Status: Open</div>
<div style="margin-left: 40px;">Priority: Default</div>
<div style="margin-left: 40px;">SLA: NRAO E2E</div>
<div style="margin-left: 40px;">Template group: Default</div>
<div style="margin-left: 40px;">Created: 16 November 2017 07:20 PM</div>
<div style="margin-left: 40px;">Updated: 17 November 2017 05:41 PM</div>
<div style="margin-left: 40px;">Reply due: 21 November 2017 05:28 PM (3d 23h 47m)</div>
<div style="margin-left: 40px;">Resolution due: 12 August 2020 12:00 AM (998d 6h 18m)</div>
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If you are generating 1664 plot files with a very limited <br />selection of data then you are doing something very very<br />wrong in your use of POSSM. Study your INPUTS closely - <br />are you asking for a SOLINT of a very short time, are you<br />plotting each of the 351 baselines individually and each<br />of the IFs and polarizations individually.?<br /><br />I always run a plot task first with DOTV = 1 to check<br />that I am doing something sensible. POSSM does not<br />require a lot of CPU, it only reads the selected data and<br />averages it, and computes simple plots. APARM(9)=3<br />will plot all polarizations and spectral windows in one plot<br />and that is generally useful.<br /><br />The suggestions about old machines and defective disks<br />were made because you used the word "hang" rather than<br />slow. <br /><br />POSSM certainly tried to tell you about the plots it was<br />making - do you watch the message window? When you<br />make plot files (DOTV
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