* env var to change default float to fp16 or bf16
looking for standard names for these. we have FLOAT16 that does something to IMAGE and HALF to convert weights.
working on default bf16 too.
```
RuntimeError: compile failed: <null>(6): error: identifier "__bf16" is undefined
__bf16 cast0 = (nv_bfloat16)(val0);
```
remove that in cifar
* DEFAULT_FLOAT
* default of default
* unit test
* don't check default
* tests work on linux
* create cache for q learning
* make linter happy
* global beam
* where it belongs
* bugfix
* ditch the kopt, use the beam
* faster lin and DEBUG=2 okay
* remove kopt, move search to features
* Context and Timing can now be used as decorators
* Using Timing decorator in quickstart.md
The time formating is better and is a useful tool to learn.
Old: Time: 3.5260659999912605
New: Time: 3526.14 ms
* Updated env_vars documentation for Context
* Added test for Context decorator
* Put new import on same line as others
* Rename in files
* Move files
* Moved to extra/datasets as suggested
* Changes to files
* Fixed stupid mistake
---------
Co-authored-by: terafo <terafo@protonmail.com>
* global -> group
* allow None for local_size in custom function
* lil local
* comment on shape
* fix cuda
* smart local cast
* better local heuristic
* fix ptx, and work_dim cleanup
* fix metal
* fix ops test
* fix openpilot jit
* no more optlocal
* might fix metal tests
* try metal now
* see generated metal code
* test free removal. REVERT THIS
* mergable
* Minor improvements + cleanup to `ops_gpu.py`
* Add some previously undocumented environment variables from `ops_gpu.py` to `env_vars.md`
* Update debug print for OpenCL to print the devices that will be used post-filtering with `CL_EXCLUDE`
* Remove a couple unused or superfluous variables and assignments
* Use `fromimport` shorthand to shave off a couple precious LOC
* Couple small whitespace changes to clean things up
* Revert change to ordering of OpenCL devices
* Small refactor for OpenCL context creation
Changing if not exist to the exist_ok=True parameter and adding a variable check if you want to download training data also
adding variable to env_vars.md
