How do I add a new C++ file to the deft core?

First create a new file in the src/ directory. Then you edit the SConstruct file, and search for a similar file and add the new file at the same place.

How do I create a new C++ program to generate data?

We keep programs that generate data in papers/PAPERNAME/figs/, so you'll want to create a .cpp file in that directory. Then, as in the case of a deft core file above, you edit SConstruct, and copy a similar file. The primary distinction you want to make is: should your program be automatically run, or is it very slow or a huge memory hog? Also, does it just produce a single output file, or does it producce a few, or many? Programs that generate data are built with a .mkdat extension, which when run should generate a file with a .dat extension, and the same base name.

How do I speed up the build on srun?

You can run with multiple cores, designated by -j4

srun -c4 scons -j4

The -c4 tells srun that make will use 4 cores. The -j4 tells scons to use 4 cores. If the srun job does not start immediately you will want to reduce the number of cores used. The idea being that all the processes will run on a single node.

How do I create a new density functional?

This requires a few steps, and is most easily done by copying and modifying an existing functional. You can begin by creating a new haskell module for your functional by copying src/haskell/SFMT.hs to a new NewFunctional.hs file for your new functional. Edit that file to rename SFMT at the top to your new filename (which should not actually be NewFunctional, but should start with a capital letter).

Now you need to edit src/haskell/functionals.hs to make that program use your functional to generate a new src/NewFunctionalFast.cpp file.

Next, you need to teach SConstruct to generate and use the new src/NewFunctionalFast.cpp file. Edit this file, and add your new filename, analogous to how src/SoftFluidFast.cpp shows up currently. And this is all! You just need to go ahead and write code that uses your functional. Of course, making the haskell code implement the functional you actually want requires more work.

I am currently transitioning to a new system for C++ code generation, which is slightly different, and shows up in src/haskell/newfunctionals.hs.