This PR introduces the QuantizedHuggingFaceReader component which enables the reading and dequantization of the quantized tensors in the SafeTensors checkpoint. Following capabilities are inrtoduced:
- Configuration the target DType and the block size.
- Multi threaded dequantization for efficiency
Test Plan:
buck test //caffe2/test/distributed/checkpoint\:test_quantized_hf_storage
```
Time elapsed: 2:34.1s
Tests finished: Pass 31. Fail 0. Fatal 0. Skip 0. Build failure 0
```
Differential Revision: D80174674
Pull Request resolved: https://github.com/pytorch/pytorch/pull/160682
Approved by: https://github.com/ankitageorge
# Context
In #161183, we added NUMA-binding support for `Callable` entrypoints to `elastic_launch`.
However, we would raise an exception if the subprocesses would be spawned in parallel via `ThreadPoolExecutor`, which is an option configurable via the `TORCH_MP_PARALLEL_START` environment variable (see diff).
The logic here was that `os.sched_setaffinity`, which we used to set CPU affinities, is [per process](https://docs.python.org/3/library/os.html#os.sched_setaffinity), so there could be a race condition during a parallel start:
> Restrict the process with PID pid (or the current process if zero) to a set of CPUs. mask is an iterable of integers representing the set of CPUs to which the process should be restricted.
But on further reading, the Linux docs say [`sched_setaffinity` is per *thread*.](https://man7.org/linux/man-pages/man2/sched_setaffinity.2.html) As it turns out, the Python doc is a misnomer.
I [verified that `sched_setaffinity` only affects the calling thread, not the entire calling process.](https://gist.github.com/pdesupinski/7e2de3cbe5bb48d489f257b83ccddf07)
The upshot is that we actually *can* safely use the inheritance trick from #161183 even with parallel start, since the setting will be inherited from the calling thread, and `os.sched_setaffinity` only affects the calling thread.
# This PR
Remove restrictions against parallel start for NUMA binding.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/161576
Approved by: https://github.com/d4l3k
# Context
In #160163, we added support for NUMA binding for `Callable` entrypoints to `elastic_launch`. This requires special consideration, because they go through a different path to spawn subprocesses compared to `str` entrypoints, a path which does not provide a straightforward way to utilize `numactl` CLI. See #160006 for a full description of the challenges.
Although #160163 worked in initial local experiments, we ran into some linker errors in other environments when we tried to call `numactl`. This appeared to be due to interactions with how the `LD_PRELOAD` environment variable was being set.
# This PR
On further thought, the most straightforward, foolproof solution here is to use [the trick that @d4l3k suggested.](https://github.com/pytorch/pytorch/issues/160006#issuecomment-3162018836)
Specifically, for each local rank `i`:
1. The parent process sets its own CPU affinity to what local rank `i`'s should be.
2. Then, the parent spawns the subprocess for local rank `i`.
3. Finally, the parent resets its own CPU affinity to what it was originally.
There were other solutions that would work just for `Callable` entrypoints, but I believe this is the simplest one that can work for *both* `str` and `Callable`, and it's pretty simple.
This required a bit of refactoring:
1. Turn all the `_get_.*_numactl_options` into functions which return a set of logical CPUs to bind to, rather than options like `--cpunodebind=0`.
2. Instead of wrapping commands with `numactl`, use `os.sched_setaffinity` to bind to the CPUs from (1.).
3. Put this all inside a context manager which encapsulates applying and restoring the bindings in the parent process.
4. Use the context manager for both `str` and `Callable` paths
# Test Plan
## Automated
`$ pytest test/test_numa_binding.py`
## Manual
See [doc.](https://docs.google.com/document/d/1vxD-OKYBTT27jbBwtW9iz9g0tNM0u-i0tiTJg_ieQA8/edit?tab=t.0) Meta only, but TLDR tried out every combination of `str`, `Callable`, binding disabled, and binding enabled on the same model and saw 2x SM utilization for binding enabled.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/161183
Approved by: https://github.com/d4l3k
This PR removes the integration point torch.fx had with torch::deploy (and another minor change).
Note: This PR has some broken mypy errors, but I believe those should have been in the code base beforehand, and should be fixed in a separate PR
Pull Request resolved: https://github.com/pytorch/pytorch/pull/158291
Approved by: https://github.com/albanD
ghstack dependencies: #158290
Options to address the "undocumented python objects":
1. Reference the functions in the .rst via the torch.nn.modules namespace. Note that this changes the generated doc filenames / locations for most of these functions!
2. [Not an option] Monkeypatch `__module__` for these objects (broke several tests in CI due to `inspect.findsource` failing after this change)
3. Update the .rst files to also document the torch.nn.modules forms of these functions, duplicating docs.
#### [this is the docs page added](https://docs-preview.pytorch.org/pytorch/pytorch/158491/nn.aliases.html)
This PR takes option 3 by adding an rst page nn.aliases that documents the aliases in nested namespaces, removing all the torch.nn.modules.* entries from the coverage skiplist except
- NLLLoss2d (deprecated)
- Container (deprecated)
- CrossMapLRN2d (what is this?)
- NonDynamicallyQuantizableLinear
This mostly required adding docstrings to `forward`, `extra_repr` and `reset_parameters`. Since forward arguments are already part of the module docstrings I just added a very basic docstring.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/158491
Approved by: https://github.com/janeyx99
Options to address the "undocumented python objects":
1. Reference the functions in the .rst via the `torch.functional` namespace. Note that this changes the generated doc filenames / locations for most of these functions!
2. Document these functions by referencing them from the `torch.` namespace instead, in line with common usage. This would also require setting the `__module__` for these functions and moving entries from `torch.functional`'s `__all__` -> `torch`'s `__all__`, which is BC-breaking.
3. Update the .rst files to also document the `torch.functional` forms of these functions, duplicating docs.
This PR takes option (3) above and:
* Removes all 20 `torch.functional` entries from the doc ignore list
* Removes `torch.functional.align_tensors()` entirely, since we don't want to document it.
* This is technically BC-breaking, although the previous impl simply errored out. This change could be moved to a separate isolated PR for safety.
* Introduces `torch.aliases.md` as a hidden page for the `torch.functional` aliases to the `torch` analogue functions
Pull Request resolved: https://github.com/pytorch/pytorch/pull/158581
Approved by: https://github.com/janeyx99
This PR removes the integration point torch.fx had with torch::deploy (and another minor change).
Note: This PR has some broken mypy errors, but I believe those should have been in the code base beforehand, and should be fixed in a separate PR
Pull Request resolved: https://github.com/pytorch/pytorch/pull/158291
Approved by: https://github.com/albanD
ghstack dependencies: #158288, #158290
This PR removes the integration point torch.fx had with torch::deploy (and another minor change).
Note: This PR has some broken mypy errors, but I believe those should have been in the code base beforehand, and should be fixed in a separate PR
Pull Request resolved: https://github.com/pytorch/pytorch/pull/158291
Approved by: https://github.com/albanD
ghstack dependencies: #158288, #158290
Summary: Change HF classes to not have an underscore, there-by making them public, we will add documentation to them following this
Test Plan:
ensure existing tests pass
Rollback Plan:
Differential Revision: D76364024
Pull Request resolved: https://github.com/pytorch/pytorch/pull/155837
Approved by: https://github.com/saumishr
Removes MemPoolContext from custom user mempools. The ground truth for which pool should be used is in graph_pools active pool, and MemPoolContext just introduced an opportunity for the pool pointed to by MemPoolContext and active pool in graph_pools to go out of sync (see all the asserts in the code to make sure that happens, and yet it still could happen in a multithread scenario, see my recent PRs (#153990).
Pull Request resolved: https://github.com/pytorch/pytorch/pull/154042
Approved by: https://github.com/albanD, https://github.com/syed-ahmed
- Move community and language binding links to the horizontal bar
- Add an intro to the community page.
- Fix the link in the ogp_image
- Fix the link in the version switcher
- Clean up unneeded links
Pull Request resolved: https://github.com/pytorch/pytorch/pull/153090
Approved by: https://github.com/albanD
This is an initial attempt to provide some statistics for the pinned host memory allocations flowing through CachingHostAllocator. Many times in the past we have had inexplicable slowdowns that would be much easier to diagnose if we had some host memory characteristics.
This change tries very hard not to disrupt the initial design of the allocator, and it uses existing locking mechanism, whenever possible, to gather statistics "for free". Only deviation from that is on the "slow path" where we incur CUDA calls anyway, so taking a short lock is not going to hurt the performance much, especially in the steady state where most allocations will come from cache.
As mentioned before, this is the first PR, to introduce the concept and to see if it fits the right paradigm. We can always add more later.
Metrics that would require more involved changes to the code base and locks, like requested memory, have been punted for now. I also tried to reuse the Stat structure used in CUDA caching allocator, in order to maintain symmetry.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/147660
Approved by: https://github.com/ngimel
