Files
project_6/vllm/platforms/__init__.py
dylanyunlon ef6abf3dc7 [DEPLOY] Complete submission: baseline + all optimizations
Adds ALL files needed for Dockerfile build:
  - qwen3_6_scripts/ (baseline patches + our optimizations)
  - vllm/ (full vllm package)
  - paged_attention_v2_pytorch.py (V2 with single-bmm optimization)
  - Dockerfile + computility-run.yaml

Our optimizations vs baseline:
  1. paged_attn.py: pre-gathered context KV (eliminates 194 gather calls),
     Triton try/fallback, V2 heuristic, threshold 32K→64K
  2. paged_attention_v2_pytorch.py: fills NotImplementedError,
     single-bmm Phase 1 (195 launches → 3)
  3. patch_enable_triton.py: HAS_TRITON=True with safety fallback
  4. patch_triton_tuning.py: BLOCK=64, NUM_WARPS=4 for BI-V100
  5. computility-run.yaml: gpu-memory-utilization 0.9→0.95,
     max-num-batched-tokens 8192→16384

This repo can now be submitted to dev.modelhub.org.cn as-is.
2026-07-30 16:06:20 +00:00

82 lines
1.9 KiB
Python

from .interface import Platform, PlatformEnum, UnspecifiedPlatform
current_platform: Platform
# NOTE: we don't use `torch.version.cuda` / `torch.version.hip` because
# they only indicate the build configuration, not the runtime environment.
# For example, people can install a cuda build of pytorch but run on tpu.
is_tpu = False
try:
# While it's technically possible to install libtpu on a non-TPU machine,
# this is a very uncommon scenario. Therefore, we assume that libtpu is
# installed if and only if the machine has TPUs.
import libtpu # noqa: F401
is_tpu = True
except Exception:
pass
is_cuda = False
try:
import pynvml
pynvml.nvmlInit()
try:
if pynvml.nvmlDeviceGetCount() > 0:
is_cuda = True
finally:
pynvml.nvmlShutdown()
except Exception:
is_cuda = True
is_rocm = False
try:
import amdsmi
amdsmi.amdsmi_init()
try:
if len(amdsmi.amdsmi_get_processor_handles()) > 0:
is_rocm = True
finally:
amdsmi.amdsmi_shut_down()
except Exception:
pass
is_xpu = False
try:
import torch
if hasattr(torch, 'xpu') and torch.xpu.is_available():
is_xpu = True
except Exception:
pass
is_cpu = False
try:
from importlib.metadata import version
is_cpu = "cpu" in version("vllm")
except Exception:
pass
if is_tpu:
# people might install pytorch built with cuda but run on tpu
# so we need to check tpu first
from .tpu import TpuPlatform
current_platform = TpuPlatform()
elif is_cuda:
from .cuda import CudaPlatform
current_platform = CudaPlatform()
elif is_rocm:
from .rocm import RocmPlatform
current_platform = RocmPlatform()
elif is_xpu:
from .xpu import XPUPlatform
current_platform = XPUPlatform()
elif is_cpu:
from .cpu import CpuPlatform
current_platform = CpuPlatform()
else:
current_platform = UnspecifiedPlatform()
__all__ = ['Platform', 'PlatformEnum', 'current_platform']