2016-08-21.md

2016-08-21

What do you plan to do today?

• Gregory Bard

  • cleaning up last few sections of appendix.

• Alina Bucur

  • ???

• Tim Clemans

  • find a file

  • project log cursor (need a little help)

• Aly Deines

  • rebasing and merging. sigh.

• Rob Harron

  • teaching

• John Jeng

  • asleep or running. react rewrite

• Kiran Kedlaya

  • experiment with GCE and with sparse vs. dense linear algebra over F_2

• Jack Kennedy

  • ☞ learn to develop SMC ☜

  • still looking at subgraph code

• Jonathan Lee

  • react rewrite

• Simon Luu

  • finish video chat

• Michelle Manes

  • teaching

• Nicholas Ruhland

  • ??

• Harald Schilly

  • setup http://blog.sagemath.com/

  • trying to finish that build script for compute images, like in the past few days

  • tim could teach me a few jenkins tricks

  • may try again to use dask or ipython parallel to distribute some tasks

• William Stein

  • docker image of single-container SMC (with Kartik)

  • do the most difficult task involving kubernetes that will benefit from having @hsy around: ssh gateway

• Kartik Venkatram

  • ???

(took 0:15)

What did you do today?

• Gregory Bard

  • Finished writing all the possibilities for saving your image files. (Appendix G.4)

  • Finished writing about the several uses of the show() command (Appendix G.5)

  • Discussed linear algebra with Kiran Kedlaya

  • Rewrote the code for newPlot3d to be more similar to the old plot3d

  • Learned how to use **kwargs to enable passing keywords from newPlot3d to implicit_plot_3d, resulting in a tremendously simpler set of options

  • Combined all five operations: 3d graphs where z=real_part, z=imag_part, z=magnitude, z=phase, and z="magnitude but color=phase".

  • Rethinking how to organize H.1 (Basic 3D Plots in Cartesian Coordinates)

  • Investigating contours=[] option in implicit_plot3d, to draw concentric hemispheres or paraboloids

  • Found very cool examples for concentric hemispheres/paraboloids

  • Found very cool examples for terrain-style maps z=f(x,y) colored by a terrain map T(x,y,z)=z

  • Re-re-thinking how to organize H.1

  • Panicking about the complex analysis section

  • Proofread G.3, contour plots and density plots, including this huge microeconomics example.

  • People, take a look at this link, if you are curious:

• Alina Bucur

• Tim Clemans

• Aly Deines

  • Rebased and cleaned up 16893. Please review my ticket!

• Rob Harron

• John Jeng

• Kiran Kedlaya

  • Experimented with GCE and with sparse vs. dense linear algebra over F_2 (outcomes: GCE takes some getting used to but is very usable for someone at my skill level; dense LA over F_2 beats sparse handily in my problem range, say 5000x5000 matrices)

  • With Kartik, looked into why computing Hecke operators uses so much memory

  • Worked on a couple of tickets (11516, 20788)

• Jack Kennedy

• Jonathan Lee

• Simon Luu

  • Got all the media stream stuff all worked out. I just have to make it render one big video and the rest small videos. So that when you click on one of the small ones, it becomes the big video.

• Nicholas Ruhland

• Harald Schilly

  • http://blog.sagemath.com is now kind of ready for use. some template tweaks, and other details missing. content could be from the wiki, as a nice start

  • looked more into parallelization utilities. the award for the weirdest error message goes to ipyparallel and looks like this:

    
    �cipyparallel.serialize.canning
    CannedFunction
    q
    )�q}q(UclosureqNUcodeqcipyparallel.serialize.codeutil
    code_ctor
    q(K
    KKKCUtd
    �
    }
    ||
    t
    SqNU
    x�qUvarq	U
    y�q
    Ubuffersq]ub.
    

  • and finally, a neat python 1-liner: this defines the @distribute decorator discussed a bit with kiran, based on ipyparallel's load balancer: distributed = lambda f : lambda vals : dict(zip(vals, lb.map_sync(f, vals, ordered=False))) used like this @distributed def computation(k): return 2*k + 1

    computation(range(10)) →
    {0: 2, 1: 4, 2: 6, 3: 8, 4: 10, 5: 12, 6: 14, 7: 16, 8: 18, 9: 20}
    

• spied a bit on william's new dockerimage setup for distributing a full smc install for a single install

• William Stein

  • Created a complete docker image of SMC for doing offline development, hosting your own SMC easily, etc. To use it, you (1) install docker, then (2) type docker run -P williamstein/sagemathcloud...

    • Source code: https://github.com/sagemathinc/smc/tree/master/src/dev/docker

    • Docker hub: https://hub.docker.com/r/williamstein/sagemathcloud/

    • Worked super hard to do this for Kartik, but he had to leave just as I finished; but maybe tomorrow...

  • Evening plan: ssh gateway

• Kartik Venkatram

  • something with GF2 linear algebra