#13978: Static 3d plots are not working with a separate account for worker
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Reporter: novoselt | Owner: jason, mpatel, was
Type: defect | Status: new
Priority: critical | Milestone: sage-5.7
Component: notebook | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by gutow):
This is very odd. The server side JmolData.jar is launched with a request
for a maximum of 512 MB of memory. It won't use even that much if it
doesn't need it. I'm also not clear on why the system would default to
Tachyon when memory is tight. The decision is made dependent upon the
availability of a JavaVM of the proper version, not on memory constraints.
The code simply runs "java --version". If it does not get a proper
version back it defaults to Tachyon. The errors quoted in the previous
discussion, suggest that something else is using gobs of memory before any
attempt is made to launch a JVM. There is nothing we can do about that.
All the other things Sage uses will have to be less demanding on memory.
My guess is that Maxima and maybe GAP are gobbling up memory.
As to the permission issues, are they related to the static plots or the
new constraints that many browsers are putting on Java applets? I'm
trying to catch up with that, but only FireFox seems to be behaving
reasonably anymore. Reading back through our previous linked discussion
mentioned above, I think this relates to the permissions available to the
workers. I think all workers need to be in the same group as the main
user and all members of the group must have rw permissions. This may be
an issue for the notebook in general. I'm not familiar with the code that
creates worksheet folders. Is there work being done that this issue can
be piggybacked on?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13978#comment:2>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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