[Feature] Support L1 calling convention in tvm-ffi
Open
Nobody has claimed this yet.
- Dominant language
- Python
- Stars
- 492
- Forks
- 30
- Avg merge
- 4d 9h
- Merged PRs (30d)
- 2
Description
The current calling convention in Tilus:
import tilus
from tilus import float16, int32, GlobalTensor
class Example(tilus.Script):
def __call__(
self, m_size: int32, n_size: int, k_size: int, a_ptr: ~flaot16, b_ptr: ~flaot16, c_ptr: ~flaot16
): # m_size is dynamic, n_size and k_size are JIT constants
"""
Generate:
void example(int m, int n, int k, float16 *a, float16 *b, float16 *c) {...}
"""
...
g_a: GlobalTensor = self.global_view(a_ptr, dtype=float16, shape=[m_size, k_size])
...
The L1 calling convention:
class ExampleL1(tilus.Script):
def __call__(
self,
g_a: GlobalTensor[float16, ['m', 'K']], # m is dynamic,
g_b: GlobalTensor[float16, ['K', 'N']], # K and N are JIT constants
g_c: GlobalTensor[float16, ['m', 'N']],
):
"""
Generate:
void exampleL1(tvm::ffi::TensorView g_a, tvm::ffi::TensorView g_b, tvm::ffi::TensorView g_c) {...}
"""
...
We can also use
g_a: 'float16[m, K]',
g_b: 'float16[K, N]',
g_c: 'float16[m, N]'
as type annotation.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
No files or tests are named. Start by locating the existing Tilus calling-convention and GlobalTensor type-annotation entry points, then trace how kernel parameters become generated signatures. Done means supporting the L1 TensorView convention with both shown annotation forms while preserving the current convention, with tests covering dynamic and JIT-constant dimensions.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- python
- Domain
- backend-api-design, compilers
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100