Slow change-compile-test-cycle?

[Siddharth Bhat]

Hello all,

I'm trying to make the error messages in src/sage/combinat/tableau.py a little more verbose. I'm finding that the change-compile-test cycle is quite slow. 

Even with a `make -j` (which should use all cores available, and I have 8, it takes quite a long time to build.

It seems that most of the time is spent on [dochtml]. Is this normal? Since I'm changing a very specific file, is it possible to get

SAGE to build a little faster? For example, some of the output from the make is:

[dochtml] Building hu/a_tour_of_sage.
[dochtml]
[dochtml] [tutorial ] Merging environment/index files...
[dochtml] [tutorial ] ... done (0 todos, 11 index, 7 citations, 0 modules)
[dochtml] [tutorial ] no targets are out of date.
[dochtml] [tutorial ] The HTML pages are in ../../.local/share/doc/sage/html/es/tutorial.
[dochtml] Build finished. The built documents can be found in /home/bollu/.local/share/doc/sage/html/es/tutorial
[dochtml] [a_tour_of] Merging environment/index files...
[dochtml] [a_tour_of] ... done (0 todos, 1 index, 0 citations, 0 modules)
[dochtml] [a_tour_of] no targets are out of date.
[dochtml] [a_tour_of] The HTML pages are in ../../.local/share/doc/sage/html/hu/a_tour_of_sage.
[dochtml] Build finished. The built documents can be found in /home/bollu/.local/share/doc/sage/html/hu/a_tour_of_sage
[dochtml] Elapsed time: 97.7 seconds.

I was hoping there was some way to ask SAGE to not try to rebuild things like "a tour of SAGE" which has not been edited at all, since I've only edited

src/sage/combinat/tableau.py.  I'm a complete newbie to the SAGE development process, so I'd really appreciate some help!

If this can't be made faster, are there other tips to make the development process a little faster? It currently takes:

real 1m55.887s
user 2m41.891s
sys 0m19.352s

for a single change to be built :) 

Thanks a lot,

~Siddharth

--

https://bollu.github.io/

[Dima Pasechnik]

Normally, if you just change Python code in the library, it suffices to run

./sage -br

to update the Python code and re-launch Sage.
A longer rebuild is

make build

(only if you changed socs, and want to test that they still work,
you'd need to run
make, or make doc-html)

HTH

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