On Sat, Sep 24, 2016 at 11:05 AM, saad khalid <[email protected]> wrote:
> Thank you for your response! I don't believe that the timeout quota is the
> problem unfortunately, I checked and I have 49 hours and I've been doing
> stuff at least every couple of hours on the project.
>
> I want to try saving the output to a file using Pickle, that sounds very
> cool. I'm reading this tutorial for help so far:
> http://www.diveintopython3.net/serializing.html
>
> And I read somewhere that Sage has integrated save/load functions(using
> pickle as the backend?). Should I just use the save/load functions in sage
> or import pickle and use it directly?
If you're working with Python objects, use save/load -- straight
pickle mostly doesn't work with Sage.
> Another problem with doing this is that my computation is running in
> macaulay2, using the Sage/M2 interface. Here's how it looks:
However, you're using Macaulay2, so pickle/save/load will be of no use
to you. I don't know if there is any analogue of save/load/pickle for
Macaulay2. If not, you'll have a lot more work to do. You should
write to the Macaulay2 support mailing list.
>
> macaulay2.eval("""
> K = toField(QQ[zet]/(zet^8 - zet^6 + zet^4 - zet^2 + 1))
> needsPackage "InvariantRing"
> A = []
> B = []
> C1 = []
> C2 = []
> C3 = []
> C4 = []
> C5 = []
> C6 = []
> C7 = []
> C8 = []
> C9 = []
> C10 = []
> for a1 from 1 to 20 do (for a2 from 1 to 20 do (for a3 from 1 to 20 do A =
> A|[matrix{{zet^(a1),0,0},{0,zet^(a2),0},{0,0,zet^(a3)}}] ) )
> for i from 0 to (#A-1) do B = B|[generateGroup({A#i},K)]
> """)
>
> last time, my problem was that I was trying to output too large an amount of
> data from M2 at once, so i split it up into smaller parts this time. That's
> why I defined the arrays C1 through C10. All the for loop does is give me a
> long list, B, with every possible diagonalized cyclic group generated when
> you're dealing with the 20th root of unity in 3x3 matrices. I don't think
> that part matters much, it works fine, and the array has 8000 matrix groups
> in in (20^20^20).
>
> Once I have all that stuff defined, I run the following code:
> macaulay2.eval("for j from 0 to (799) do C1 = C1|[toString molienSeries
> B#j]")
>
> This converts the molien series of a group from the array B, converts it
> into a string, and then stores it in C1.
> I have 10 different versions of that line in different cells, the different
> between them being the start and stop points of the for loop, and which list
> I have it write to. For example, I have the line for list C2 running from
> 800 to 1599. What's strange is, the first one(from 0 to 799) works fine, it
> takes several hours but it does finish computing. Once it's finished, i try
> running the second one and leave it for a few hours. That one hasn't worked
> out, whenever I get back on sage to check on it after a few hours, it's
> crashed and all the previous computations and variables have been reset.
> I've written some code to convert the M2 object into a string that I can
> assign to a variable in Sage, but that only works when the computation has
> finished in macaulay (it basically just using to_sage() function on C1, C2,
> etc as they finish computing). Is it possible for me to use pickle to save
> the M2 computation up until the point it crashes, and then have it pick up
> where it left off? Or is my only option to make the for loops even shorter?
>
> Thanks!
>
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--
Best Regards,
William Stein
CEO, SageMath, Inc.
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