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fix bugs when device is None in get_full_tflops_approx and add b200 tflops #172

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fix bugs when device is None in get_full_tflops_approx and add b200 tflops #172

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fix bugs when device is None in get_full_tflops_approx and add b200 t…
WhatGhost May 27, 2026
01d13c1
unmove debug msg
WhatGhost May 27, 2026
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8 changes: 7 additions & 1 deletion python/triton_dist/kernels/nvidia/gemm_perf_model.py
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Original file line number Diff line number Diff line change
Expand Up @@ -120,6 +120,7 @@ def get_tflops_approx(device: torch.dtype, num_ctas: int, num_warps: int, dtype:


def get_full_tflops_approx(dtype: torch.dtype, device: Optional[torch.device] = None):
device = torch.cuda.current_device() if device is None else device
prop = torch.cuda.get_device_properties(device)
return get_tflops_approx(device, prop.multi_processor_count, 4, dtype)

Expand All @@ -135,7 +136,9 @@ def get_tensorcore_dtype_support(device_id=0):
(8, 9): [torch.float16, torch.bfloat16, torch.float32, torch.int8, torch.float8_e4m3fn,
torch.float8_e5m2], # Ada L40S/RTX 40xx
# Hopper
(9, 0): [torch.float16, torch.bfloat16, torch.float8_e4m3fn, torch.float8_e5m2, torch.int8]
(9, 0): [torch.float16, torch.bfloat16, torch.float8_e4m3fn, torch.float8_e5m2, torch.int8],
# Blackwell
(10, 0): [torch.float16, torch.bfloat16, torch.float8_e4m3fn, torch.float8_e5m2, torch.int8],
}
return DTYPE_MAP.get(cap, [torch.float16, torch.float32])

Expand Down Expand Up @@ -177,6 +180,8 @@ def get_tensorcore_tflops_by_device_name(dtype, device_id=0):
return 989 * (2 / dtype.itemsize)
if device_name == "NVIDIA H20":
return 148 * (2 / dtype.itemsize)
if device_name == "NVIDIA B200":
return 2250 * (2 / dtype.itemsize)

logging.warning(
f"device {device_name} not listed here. calculate tflops by estimation, or you can report it to developers.")
Expand Down Expand Up @@ -206,6 +211,7 @@ def get_dram_gbps_by_device_name(device_name: str):
"NVIDIA H100 SXM": 3958,
"NVIDIA H100 NVL": 3341,
"NVIDIA H800": 3350,
"NVIDIA B200": 8000,
}
return _DRAM_GBPS[device_name]

Expand Down