<font face="Verdana, Arial, Helvetica" size="2">Eric Greisen updated #12307<br />
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<div style="margin-left: 40px;">Staff (Owner): Eric Greisen (was: -- Unassigned --)</div>
<div style="margin-left: 40px;">Status: Closed (was: Open)</div>
<div style="margin-left: 40px;">Reply due: - Cleared - (was: 11 July 2018 12:00 AM)</div>
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Underflow, Bus error<br />
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<div style="margin-left: 40px;">Ticket ID: 12307</div>
<div style="margin-left: 40px;">URL: <a href="https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/12307">https://help.nrao.edu/staff/index.php?/Tickets/Ticket/View/12307</a></div>
<div style="margin-left: 40px;">Name: Robert Gray</div>
<div style="margin-left: 40px;">Email address: <a href="mailto:roberthansengray@gmail.com">roberthansengray@gmail.com</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: Closed</div>
<div style="margin-left: 40px;">Priority: Default</div>
<div style="margin-left: 40px;">Template group: Default</div>
<div style="margin-left: 40px;">Created: 07 July 2018 02:30 PM</div>
<div style="margin-left: 40px;">Updated: 09 July 2018 05:49 PM</div>
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The UNDERFLOW message is normal these days due to the gfortran compiler. It means that a computed value microscopically close to zero was set zero. It is totally normal and should be ignored.<br /><br />The bus error from AIPS.EXE suggests that you started these aips tasks some time previously and while they were running you updated your installation with a MNJ. Normally AIPS.EXE does not change but in fact I made several changes that affected that load module. Note that AIPS.EXE can keep on running until it encounters a section of the load module that has changed. Then a bus error ensues. If this keeps happening let me know.<br /><br />Eric Greisen<br />
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