Also in this change:
* The computation for a single `q` is factored out and exposed.
* Strided `ConstMat` views into the KV caches are introduced to enable experimentation with various KV cache layouts.
PiperOrigin-RevId: 756339313
- chore: unused parameters cleaned up
- bugfix: explicitly use hwy::Span in GenerateInternal() to prevent runtime crashes due to memory layout incompatibility
- bugfix: explicit nullptr check in LogDebug
- chore: length-related parameters renamed for clarity
- feature: SaveConversation() can be optionally used to save copy of a conversation that ResetConversation() will rewind to upon request, rather than just an empty KV cache
- feature: GetCurrentConversation() can be used to query the current conversation's name
PiperOrigin-RevId: 755873147
Weight handling:
- new ModelStore2 supports both pre-2025 multi-file and single-file formats
- simpler ForEachTensor with TensorArgs
- tensors are constructed with their full suffixed name
I/O:
- support mmap and stride
- Simplified SbsWriter, single insert(); add SbsReader
Misc:
- kMockTokenizer: allow creating with unavailable tokenizer
- configs.h: Simpler enum validity checks via kSentinel
- matmul.h: remove unused enable_bind (now in allocator.h)
- tensor_info: single TensorInfoRegistry class, rename from tensor_index.h
Frontends:
- Replace Allocate/CreateGemma with ctor(LoaderArgs, MatMulEnv&)
- Deduce model/weight type, remove --model and parsing
- Replace most common.h includes with configs.h
- Remove --compressed_weights, use --weights instead
- Remove ModelInfo, replaced by ModelConfig.
Backprop:
- Reduce max loss, remove backward_scalar_test (timeout)
- Update thresholds because new RandInit changes rng eval order and thus numerics
PiperOrigin-RevId: 755317484
This change adds a basic C API that allows access to Gemma functionality from other programming languages. The functionality is exposed via a shared library (DLL on Windows), with C++ interfaces and a basic C# interop wrapper included.
To build the DLL, use the `windows-dll` preset, which includes the C and C++ sources as follows:
```
cmake --preset windows-dll
cmake --build --config Release --preset windows-dll -j 4
```
This should generate a `gemma.dll` in `<build-dir>/Release`.
To build for non-Windows, the appropriate C++ DLL linking will need to be done to generate a shared library for the target OS.
PiperOrigin-RevId: 750246272
- Added prompt flag to InferenceArgs for non-interactive mode
- Set user-facing options to verbosity level 1
- Fixed prompt_size declaration and variable ordering in run.cc
- Properly set prompt_size after WrapAndTokenize calls
- Moved kVerboseLogTokens block after prompt_size is set
This change adds a --prompt command-line option that allows users to
provide prompts directly without entering interactive mode, which is
useful for scripting and automation.
use new ThreadingContext2 instead of monostate/init in each frontend
Add ThreadingArgs(replaces AppArgs)
backprop: use Packed() accessor and MakePacked factory and row-based access to allow for stride
compress_weights: remove, moving to py-only exporter instead
Move MatPtr to mat.h and revise interface:
- Generic MatOwner
- rename accessors to Packed*
- support stride/row accessors, fix RowPtr stride
Add TypeBits(Type)
Move GenerateMat to test_util-inl for sharing between matmul test/bench
Move internal init to gemma.cc to avoid duplication
Rename GemmaEnv model_ to gemma_ for disambiguating vs upcoming ModelStorage
Remove --compressed_weights, use --weights instead.
tensor_index: add ExtentsFromInfo and TensorIndexLLM/Img
Allocator: use normal unique_ptr for AllocBytes so users can call directly
threading: use -> because AlignedPtr no longer assumes arrays
PiperOrigin-RevId: 745918637
Gemma receives a MatMulEnv arg, with comment on lifetime
Split threading into topology so the latter can be used in allocator
Add AllocClasses() for non-POD (ThreadPool)
Support binding pool to NUMA node
Update threading_test with latency measurements
Also update Highway version.
PiperOrigin-RevId: 736904748
Adds Stride to ConstMat, to support decompression of C output for test
matmul_test: add line numbers to output
Also ignore "N is not a multiple of nc" when N==nc
PiperOrigin-RevId: 731096662
This computes softmax on the top-K logits, instead of computing softmax first and then getting top-K probs. So we end up avoiding renormalizing too. Additionally, modify softmax to do temperature scaling, if temp != 1.0
PiperOrigin-RevId: 727702149
This will be useful for adding sampling functionality like beam decoding, parallel sampling, cot decoding (as described in the [Chain-of-Thought Reasoning Without Prompting paper](https://arxiv.org/abs/2402.10200))
PiperOrigin-RevId: 725151530
ops.h: move CreateInvTimescale to allow calling without depending on gemma
Pass around MatMulEnv instead of pools to avoid re-creating the env
profiler.h can now be used outside SIMD code
allocator: add StepBytes and QuantumSteps
rename worker thread with package/cluster in the name
threading: add Visit* to IndexRange
PiperOrigin-RevId: 718766704
Jan Wassenberg
Biruk Mammo
The gemma.cpp Authors
prajwalc22
Prajwal Choudhari
Copybara-Service
RangerUFO
Phil Culliton
Apoorv Reddy
Daniel Keysers