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Merged
Peichen Xie (peichenxie) merged 1 commit into from
Oct 14, 2026
Merged

Release v2.0.3 #17

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13 changes: 9 additions & 4 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -30,8 +30,8 @@ Example:

```python
import torch
from mmasim.nv_ptx.sim import MMA # for "mma.sync" instructions
from mmasim.amd.sim import MFMA # for "v_mfma" instructions
from mmasim.nv_ptx import MMA # for "mma.sync" instructions
from mmasim.amd import MFMA # for "v_mfma" instructions

# mma.sync.aligned.m16n8k16.row.col.f32.f16.f16.f32 (PTX)
# or HMMA.16816.F32 (SASS)
Expand Down Expand Up @@ -66,7 +66,7 @@ Example:

```python
import torch
from mmasim.nv_ptx.sim import MMA
from mmasim.nv_ptx import MMA
from mmasim_kernels.nv_ptx.rtx_blackwell import mma_kernels

mma_sim = MMA("RTX Blackwell", "m16n8k16.f32.f16.f16.f32")
Expand All @@ -86,7 +86,12 @@ Additionally, you can run test scripts in [tests/equivalence](tests/equivalence)
## Citation

```
Coming soon
@inproceedings{xie_bit-accurate_2026,
title = {Bit-{Accurate} {Modeling} of {GPU} {Matrix} {Multiply}-{Accumulate} {Units}: {Demystifying} {Numerical} {Discrepancy} and {Accuracy}},
booktitle = {Annual {IEEE}/{ACM} {International} {Symposium} on {Microarchitecture} ({MICRO})},
author = {Xie, Peichen and Xu, Shuotao and Wang, Yang and Yang, Fan and Yang, Mao},
year = {2026},
}
```

## Contributing
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2 changes: 2 additions & 0 deletions src/mmasim/mmasim/nv_ptx/sim.py
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Expand Up @@ -42,6 +42,8 @@ def __init__(self, arch: str, shape_and_type: str):
e_zero = -20 if self.c_type == torch.float16 else -131
elif self.arch in ["Turing", "Ampere", "Ada Lovelace"]:
e_zero = -21 if self.c_type == torch.float16 else -132
elif self.arch == "Hopper":
e_zero = -21 if self.c_type == torch.float16 else -133
else: # Blackwell, RTX Blackwell
e_zero = -22 if self.c_type == torch.float16 else -133
self.arithmetic_op = fdpa.MMA_T_FDPA(F, rho, L_max, e_zero)
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2 changes: 1 addition & 1 deletion src/mmasim/pyproject.toml
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Expand Up @@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"

[project]
name = "mmasim"
version = "2.0.2"
version = "2.0.3"
authors = [{ name="Peichen Xie", email="peichenxie@microsoft.com" }]
requires-python = ">=3.10"
dependencies = ["torch>=2.9", "ninja"]
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4 changes: 2 additions & 2 deletions src/mmasim_kernels/pyproject.toml
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Expand Up @@ -4,10 +4,10 @@ build-backend = "setuptools.build_meta"

[project]
name = "mmasim-kernels"
version = "2.0.2"
version = "2.0.3"
authors = [{ name="Peichen Xie", email="peichenxie@microsoft.com" }]
requires-python = ">=3.10"
dependencies = ["mmasim>=2.0.2"]
dependencies = ["mmasim>=2.0.3"]

[tool.setuptools.packages.find]
where = ["."]
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