<div dir="ltr">Dear Kepler users, <div><br></div><div>We have been using kepler for a while now and have developed a number of fairly large and complex workflows. We recently updated kepler and have found that our old workflows 'hang' after only a short time (less than a minute). As far as I can tell they don't always hang in the same spot. We have been trying to create a model to post on this forum that demonstrates this behavior, but as soon as we pare the model down to a size small enough to post and strip out our customized code... they tend to work fine. So in lieu of an example model I'll attempt to describe the strucure of our models, the symptoms, and some avenues that we have used to try and narrow down the issues.</div>
<div><br></div><div>Our old models run in the following svn revision(s):</div><span style="font-family:arial,sans-serif;font-size:13px">svn info details:</span><br style="font-family:arial,sans-serif;font-size:13px">
<span style="font-family:arial,sans-serif;font-size:13px">Working Copy Root Path: /cygdrive/c/Kepler/svn/[build-</span><span style="font-family:arial,sans-serif;font-size:13px">area etc.]</span><br style="font-family:arial,sans-serif;font-size:13px">
<span style="font-family:arial,sans-serif;font-size:13px">Revision: 30654</span><br style="font-family:arial,sans-serif;font-size:13px"><span style="font-family:arial,sans-serif;font-size:13px">Working Copy Root Path: /cygdrive/c/Kepler/svn/</span><span style="font-family:arial,sans-serif;font-size:13px">ptolemy/src</span><br style="font-family:arial,sans-serif;font-size:13px">
<div><span style="font-family:arial,sans-serif;font-size:13px">Revision: 64636</span> </div><div><div><br></div><div>They 'hang' when run in the following revision(s)</div><div><span style="font-family:arial,sans-serif;font-size:13px">svn info details:</span></div>
<span style="font-size:13px;font-family:arial,sans-serif">Working Copy Root Path: /cygdrive/c/Kepler/svn/build-</span><span style="font-size:13px;font-family:arial,sans-serif">area</span><br style="font-size:13px;font-family:arial,sans-serif">
<span style="font-size:13px;font-family:arial,sans-serif">Revision: </span><font face="arial, sans-serif">31428 - 31431 (current)</font><br style="font-size:13px;font-family:arial,sans-serif"><span style="font-size:13px;font-family:arial,sans-serif">Working Copy Root Path: /cygdrive/c/Kepler/svn/</span><span style="font-size:13px;font-family:arial,sans-serif">ptolemy/src</span><br style="font-size:13px;font-family:arial,sans-serif">
<div><span style="font-family:arial,sans-serif;font-size:13px">Revision: </span><b style="font-size:medium;font-family:'Times New Roman';font-weight:normal"><span style="font-size:13px;font-family:Arial;color:rgb(34,34,34);vertical-align:baseline;white-space:pre-wrap">65654 - </span></b><font face="arial, sans-serif">65658</font> (current)</div>
<div><br></div><div style>I'll describe one particular model as an example:</div><div style>The workflow is a hydrlogic model which has the following attributes:</div><div style>- a PN director.</div><div style>- the most comon token is a double matrix token ([double]) of size 360x270.</div>
<div style>- many composite actors, some with sdf directors (opaque) and some without directors (transparant).</div><div style>- an opaque composite actor made into a class object with many (~30?) instances of this class.</div>
<div style>- multiple Nondeterministic Merge actors (to re-use tokens) </div><div style><br></div><div style>When this model is run in newer revisions, it runs for a bit (usually less than 1 minute) and then just stops going forwards... no error messages... just hung. When we then attempt to stop the model it gives the message "wrapping up" but hangs there. Sometimes I'm able to close the window, sometimes I need to kill kepler throught the task-manager...</div>
<div style><br></div><div style>We have noticed some changes in kepler/ptolemy... for example, it is now possible to make transparant composite actors into classes (which is useful... thank you). We hypothesized that perhaps something changed in the way that the PN director handles the opaque composite actors, and that this change is causing the log-jam (or an un-satisfied 'race condition'?) ... so we removed all of the sdf directors making all of the composite actors transparant. This made some difference in some of our smaller workflows but still the larger noes hang... </div>
<div style><br></div><div style>I'll end this note here and see if I can come up with a concrete example. In the mean time, any new perspectives or thoughts would be helpful.</div><div style><br></div><div style>Thanks in advance.</div>
<div style><br></div><div style>Jon Boright </div><br>---------------------------------<br>Jonathan Boright<br>Research Scientist<br>ISciences, LLC<br>61 Main Street, Suite 200<br>Burlington, VT 0540<br></div></div>