_dev/debug_build.py

import os
import pathlib
import sys
import signal
import time
from torch.utils.cpp_extension import load

def timeout_handler(signum, frame):
    print("Build timed out - this indicates a hanging issue")
    sys.exit(1)

# Set up timeout
signal.signal(signal.SIGALRM, timeout_handler)
signal.alarm(180)  # 3 minute timeout

repo = pathlib.Path(".").resolve()
os.environ.setdefault("TORCH_EXTENSIONS_DIR", str(repo / ".torch_extensions_debug"))

print("=== Testing with Single Source File ===")
try:
    print("Building with just new_cumsum.cu...")
    mod = load(
        name="_megablocks_debug_single",
        sources=["csrc/new_cumsum.cu"],
        extra_include_paths=["csrc"],
        extra_cflags=["-O3", "-std=c++17"],
        extra_cuda_cflags=["-O3"],
        verbose=True,
        is_python_module=False,
    )
    print("✓ Single source build successful")
except Exception as e:
    print(f"✗ Single source build failed: {e}")

print("\n=== Testing with Two Source Files ===")
try:
    print("Building with new_cumsum.cu and new_histogram.cu...")
    mod = load(
        name="_megablocks_debug_double",
        sources=["csrc/new_cumsum.cu", "csrc/new_histogram.cu"],
        extra_include_paths=["csrc"],
        extra_cflags=["-O3", "-std=c++17"],
        extra_cuda_cflags=["-O3"],
        verbose=True,
        is_python_module=False,
    )
    print("✓ Double source build successful")
except Exception as e:
    print(f"✗ Double source build failed: {e}")

print("\n=== Testing with grouped_gemm.cu Only ===")
try:
    print("Building with just grouped_gemm.cu (most complex)...")
    mod = load(
        name="_megablocks_debug_gemm",
        sources=["csrc/grouped_gemm/grouped_gemm.cu"],
        extra_include_paths=["csrc"],
        extra_cflags=["-O3", "-std=c++17"],
        extra_cuda_cflags=["-O3"],
        extra_ldflags=["-lhipblaslt"],
        verbose=True,
        is_python_module=False,
    )
    print("✓ grouped_gemm build successful")
except Exception as e:
    print(f"✗ grouped_gemm build failed: {e}")

signal.alarm(0)  # Cancel timeout