On Jan 6, 2010, at 8:50 PM, William Stein wrote:
> On Wed, Jan 6, 2010 at 11:21 AM, Ivan Andrus <[email protected]> wrote:
>> I recently decided to make some OS X services which use sage e.g. to
>> simplify an expression. So that I can select some text, and simplify it in
>> place. This is ridiculously easy to do with Automator and sage -c, but the
>> problem is that it's unbearably slow. Part of it may be Automator, but if I
>> run
>>
>> time ./sage -c '1+2'
>>
>> in a terminal it never takes less than 5 seconds real time which is clearly
>> unacceptable for this purpose. I do have moderate load on my machine, but
>> CPU time is also high. The result below is typical.
>> real 0m5.349s
>> user 0m2.876s
>> sys 0m1.747s
>>
>> This is on OS X 10.6 where we have segfaulting problems, but I don't believe
>> those come into play here. Is this typical of what other people experience?
>
> Here are some relevant tickets:
>
> http://trac.sagemath.org/sage_trac/ticket/7684
> http://trac.sagemath.org/sage_trac/ticket/7351
> http://trac.sagemath.org/sage_trac/ticket/7502
> http://trac.sagemath.org/sage_trac/ticket/7498
Excellent. I'll see if I can help with any of these (reviewing if nothing
else).
>> I understand that there are lots of things that need to be done to start
>> sage, and that it wasn't really built to do things this simple, but it would
>> be nice if there were something faster.
>>
>> Is there a way to query an insecure server running locally (without logging
>> in and creating a notebook) so that I can avoid starting up a new
>> interpreter(s) every time? I tried to find the code that interact uses
>> (since I assume it must do something similar), but didn't have any luck. If
>> I recall there was talk of adding something similar a while ago.
>>
> Use the simple sage server api, as illustrated here:
>
> http://www.sagemath.org/doc/reference/sage/server/simple/twist.html
>
> I just tried the examples out there with sage-4.3 on OS X 10.6 and it
> worked fine for me.
Perfect. That's what I was looking for.
-Ivan
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