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31_ELU • 31_elu_grid_stride_base_base

Level 1 • Task 31
import torch
import torch.nn as nn
import torch.nn.functional as F


def module_fn(x: torch.Tensor, alpha: float) -> torch.Tensor:
    """
    Applies ELU activation to the input tensor.

    Args:
        x (torch.Tensor): Input tensor of any shape.
        alpha (float): The alpha parameter for the ELU function.

    Returns:
        torch.Tensor: Output tensor with ELU applied, same shape as input.
    """
    return F.elu(x, alpha=alpha)


class Model(nn.Module):
    """
    Simple model that performs an ELU activation.
    """

    def __init__(self, alpha):
        """
        Initializes the ELU model.

        Args:
            alpha (float): The alpha parameter for the ELU function.
        """
        super(Model, self).__init__()
        self.alpha = alpha

    def forward(self, x: torch.Tensor, fn=module_fn) -> torch.Tensor:
        """
        Applies ELU activation to the input tensor.

        Args:
            x (torch.Tensor): Input tensor of any shape.

        Returns:
            torch.Tensor: Output tensor with ELU applied, same shape as input.
        """
        return fn(x, self.alpha)


batch_size = 16
dim = 16384
alpha = 1.0


def get_inputs():
    x = torch.randn(batch_size, dim)
    return [x]


def get_init_inputs():
    return [alpha]

import torch
import torch.nn as nn
import torch.nn.functional as F

class Model(nn.Module):
    """
    Simple model that performs an ELU activation.
    """
    def __init__(self, alpha: float = 1.0):
        """
        Initializes the ELU model.

        Args:
            alpha (float, optional): The alpha parameter for the ELU function. Defaults to 1.0.
        """
        super(Model, self).__init__()
        self.alpha = alpha
    
    def forward(self, x: torch.Tensor) -> torch.Tensor:
        """
        Applies ELU activation to the input tensor.

        Args:
            x (torch.Tensor): Input tensor of any shape.

        Returns:
            torch.Tensor: Output tensor with ELU applied, same shape as input.
        """
        return F.elu(x, alpha=self.alpha)

batch_size = 16
dim = 16384

def get_inputs():
    x = torch.randn(batch_size, dim)
    return [x]

def get_init_inputs():
    return [1.0]  # Provide alpha value for initialization
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Kernel Information

Operation Name 31_ELU
Level ID 1
Task ID 31
Kernel Name 31_elu_grid_stride_base_base
CUDA Speedup (Native) 1.136x
CUDA Speedup (Compile) 4.802x
CUDA Runtime 0.006 ms
PyTorch Runtime (Native) 0.007 ms
PyTorch Runtime (Compile) 0.029 ms
Correct True
Max Diff (vs. Reference) 0.000000
Model bedrock/anthropic.claude-3-5-sonnet-20241022-v2:0
Temperature 0.50
View Experiment Progress Details

Related Kernels (Level 1, Task 31 • 31_ELU)

Rank Kernel Name Runtime (ms) Speedup Native Speedup Compile
🥇 31_elu_shared_base 0.01 1.14 4.80
🥇 hybrid_elu_optimized_base 0.01 1.14 4.80
🥇 31_elu_vectorized_base 0.01 1.14 4.80
🥇 vec_shared_elu_base 0.01 1.14 4.80
🥇 31_elu_grid_stride_base_base 0.01 1.14 4.80
🥇 31_elu_vectorized_edit_1 0.01 1.14 4.80
🥇 elu_unroll_kernel_base 0.01 1.14 4.80
🥇 ldg_elu_128_base 0.01 1.14 4.80
9 31_ELU 0.01 0.97 4.12
9 31_elu_aligned_coalesced_base 0.01 0.97 4.12
9 hybrid_elu_base 0.01 0.97 4.12
9 31_elu_optimized_indexing_base 0.01 0.97 4.12
9 31_elu_reduced_divergence_base 0.01 0.97 4.12
9 elu_hybrid_base 0.01 0.97 4.12
9 31_elu_coalesced_base 0.01 0.97 4.12
9 31_elu_shared_mem_base 0.01 0.97 4.12
9 modular_elu_base 0.01 0.97 4.12
9 elu_vec4_shared_base 0.01 0.97 4.12
9 elu_tuned_blocksize_base 0.01 0.97 4.12
9 branchless_elu_vectorized_base 0.01 0.97 4.12 
#include <torch/extension.h>
#include <cuda.h>
#include <cuda_runtime.h>
#include <math.h>

#define CHECK_CUDA(x) TORCH_CHECK(x.is_cuda(), #x " must be a CUDA tensor")
#define CHECK_CONTIGUOUS(x) TORCH_CHECK(x.is_contiguous(), #x " must be contiguous")
#define CHECK_INPUT(x) CHECK_CUDA(x); CHECK_CONTIGUOUS(x)

__global__ void elu_kernel_gridstride(const float4* input, float4* output, float alpha, int n4) {
    const int grid_stride = gridDim.x * blockDim.x;
    int idx = blockIdx.x * blockDim.x + threadIdx.x;
    
    for (; idx < n4; idx += grid_stride) {
        float4 in = input[idx];
        float4 out;
        out.x = (in.x > 0) ? in.x : alpha * (expf(in.x) - 1);
        out.y = (in.y > 0) ? in.y : alpha * (expf(in.y) - 1);
        out.z = (in.z > 0) ? in.z : alpha * (expf(in.z) - 1);
        out.w = (in.w > 0) ? in.w : alpha * (expf(in.w) - 1);
        output[idx] = out;
    }
}

__global__ void elu_kernel_remainder(const float* input, float* output, float alpha, int offset, int n) {
    const int grid_stride = gridDim.x * blockDim.x;
    int idx = blockIdx.x * blockDim.x + threadIdx.x + offset;
    
    for (; idx < n; idx += grid_stride) {
        float val = input[idx];
        output[idx] = (val > 0) ? val : alpha * (expf(val) - 1);
    }
}

torch::Tensor elu_cuda(torch::Tensor x, float alpha) {
    CHECK_INPUT(x);
    auto out = torch::empty_like(x);
    
    int n = x.numel();
    int n4 = n / 4;
    int remainder = n % 4;
    
    const int threads_per_block = 256;
    const int max_blocks = 32768;
    const int min_blocks_per_sm = 2;
    const int num_sms = 132;
    
    int num_blocks = min((n4 + threads_per_block - 1) / threads_per_block,
                        min_blocks_per_sm * num_sms);
    num_blocks = min(num_blocks, max_blocks);
    
    if (n4 > 0) {
        elu_kernel_gridstride<<<num_blocks, threads_per_block>>>(
            reinterpret_cast<const float4*>(x.data_ptr<float>()),
            reinterpret_cast<float4*>(out.data_ptr<float>()),
            alpha,
            n4
        );
    }
    
    if (remainder > 0) {
        int remainder_blocks = min((remainder + threads_per_block - 1) / threads_per_block,
                                 min_blocks_per_sm * num_sms);
        remainder_blocks = min(remainder_blocks, max_blocks);
        
        elu_kernel_remainder<<<remainder_blocks, threads_per_block>>>(
            x.data_ptr<float>(),
            out.data_ptr<float>(),
            alpha,
            n4 * 4,
            n
        );
    }
    
    return out;
}

PYBIND11_MODULE(TORCH_EXTENSION_NAME, m) {
    m.def("forward", &elu_cuda, "ELU activation with grid stride (CUDA)");
}
Performance Metrics
Metric Value Unit Variance Samples
Analysis Rules
Rule Description
Operation / Metric Value Unit
aten::to
CPU Time 482930.51 μs
Device Time 40.13 μs
Self CPU Time 56.52 μs
Self Device Time 0.00 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
aten::_to_copy
CPU Time 482873.99 μs
Device Time 40.13 μs
Self CPU Time 151.39 μs
Self Device Time 0.00 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
aten::empty_strided
CPU Time 501350.80 μs
Device Time 0.00 μs
Self CPU Time 19066.36 μs
Self Device Time 0.00 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
cudaDeviceGetStreamPriorityRange
CPU Time 481428.02 μs
Device Time 0.00 μs
Self CPU Time 481428.02 μs
Self Device Time 0.00 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
cudaLaunchKernel
CPU Time 483711.51 μs
Device Time 21629.09 μs
Self CPU Time 483711.51 μs
Self Device Time 21629.09 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
elu_kernel_gridstride(float4 const*, float4*, float, int)
CPU Time 0.00 μs
Device Time 31116.02 μs
Self CPU Time 0.00 μs
Self Device Time 31116.02 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
cudaEventRecord
CPU Time 17326.26 μs
Device Time 41753.51 μs
Self CPU Time 17326.26 μs
Self Device Time 41753.51 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
aten::zero_
CPU Time 72195.97 μs
Device Time 617882.50 μs
Self CPU Time 12696.18 μs
Self Device Time 0.00 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
aten::fill_
CPU Time 59504.62 μs
Device Time 617882.50 μs
Self CPU Time 16806.32 μs
Self Device Time 617882.50 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
void at::native::vectorized_elementwise_kernel<4, at::native::FillFunctor<int>, at::detail::Array<char*, 1> >(int, at::native::FillFunctor<int>, at::detail::Array<char*, 1>)
CPU Time 0.00 μs
Device Time 617882.50 μs
Self CPU Time 0.00 μs
Self Device Time 617882.50 μs
CPU Memory Usage 0 B
Device Memory Usage 0 B
Self CPU Memory Usage 0 B
Self Device Memory Usage 0 B
Status: Failed 
45250 warnings and 4 errors generated when compiling for host.
Error while processing /home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu.
Suppressed 45287 warnings (45240 in non-user code, 47 NOLINT).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
Found compiler error(s).
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:6:35 bugprone-macro-parentheses
6 | #define CHECK_CUDA(x) TORCH_CHECK(x.is_cuda(), #x " must be a CUDA tensor")
| ^
| ()
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:7:41: warning: macro argument should be enclosed in parentheses [bugprone-macro-parentheses]
7 | #define CHECK_CONTIGUOUS(x) TORCH_CHECK(x.is_contiguous(), #x " must be contiguous")
| ^
| ()
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:10:76: warning: 2 adjacent parameters of 'elu_kernel_gridstride' of convertible types are easily swapped by mistake [bugprone-easily-swappable-parameters]
10 | __global__ void elu_kernel_gridstride(const float4* input, float4* output, float alpha, int n4) {
| ^~~~~~~~~~~~~~~~~~~
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:10:82: note: the first parameter in the range is 'alpha'
10 | __global__ void elu_kernel_gridstride(const float4* input, float4* output, float alpha, int n4) {
| ^~~~~
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:10:93: note: the last parameter in the range is 'n4'
10 | __global__ void elu_kernel_gridstride(const float4* input, float4* output, float alpha, int n4) {
| ^~
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:10:89: note: 'float' and 'int' may be implicitly converted
10 | __global__ void elu_kernel_gridstride(const float4* input, float4* output, float alpha, int n4) {
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:11:29: warning: narrowing conversion from 'unsigned int' to signed type 'int' is implementation-defined [bugprone-narrowing-conversions]
11 | const int grid_stride = gridDim.x * blockDim.x;
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:12:15: warning: narrowing conversion from 'unsigned int' to signed type 'int' is implementation-defined [bugprone-narrowing-conversions]
12 | int idx = blockIdx.x * blockDim.x + threadIdx.x;
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:25:73: warning: 3 adjacent parameters of 'elu_kernel_remainder' of convertible types are easily swapped by mistake [bugprone-easily-swappable-parameters]
25 | __global__ void elu_kernel_remainder(const float* input, float* output, float alpha, int offset, int n) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:25:79: note: the first parameter in the range is 'alpha'
25 | __global__ void elu_kernel_remainder(const float* input, float* output, float alpha, int offset, int n) {
| ^~~~~
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:25:102: note: the last parameter in the range is 'n'
25 | __global__ void elu_kernel_remainder(const float* input, float* output, float alpha, int offset, int n) {
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:25:86: note: 'float' and 'int' may be implicitly converted
25 | __global__ void elu_kernel_remainder(const float* input, float* output, float alpha, int offset, int n) {
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:26:29: warning: narrowing conversion from 'unsigned int' to signed type 'int' is implementation-defined [bugprone-narrowing-conversions]
26 | const int grid_stride = gridDim.x * blockDim.x;
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:27:15: warning: narrowing conversion from 'unsigned int' to signed type 'int' is implementation-defined [bugprone-narrowing-conversions]
27 | int idx = blockIdx.x * blockDim.x + threadIdx.x + offset;
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:35:38: warning: the parameter 'x' is copied for each invocation but only used as a const reference; consider making it a const reference [performance-unnecessary-value-param]
35 | torch::Tensor elu_cuda(torch::Tensor x, float alpha) {
| ^
| const &
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:39:13: warning: narrowing conversion from 'int64_t' (aka 'long') to signed type 'int' is implementation-defined [bugprone-narrowing-conversions]
39 | int n = x.numel();
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:48:22: error: no matching function for call to 'min' [clang-diagnostic-error]
48 | int num_blocks = min((n4 + threads_per_block - 1) / threads_per_block,
| ^~~
/home/common_modules/clang-tidy/20.0.0git/lib/clang/20/include/__clang_cuda_math.h:201:16: note: candidate function not viable: call to __device__ function from __host__ function
201 | __DEVICE__ int min(int __a, int __b) { return __nv_min(__a, __b); }
| ^
/usr/local/cuda/include/crt/math_functions.hpp:868:38: note: candidate function not viable: call to __device__ function from __host__ function
868 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:873:38: note: candidate function not viable: call to __device__ function from __host__ function
873 | __MATH_FUNCTIONS_DECL__ unsigned int min(const int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:878:38: note: candidate function not viable: call to __device__ function from __host__ function
878 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:883:34: note: candidate function not viable: call to __device__ function from __host__ function
883 | __MATH_FUNCTIONS_DECL__ long int min(const long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:902:43: note: candidate function not viable: call to __device__ function from __host__ function
902 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:919:43: note: candidate function not viable: call to __device__ function from __host__ function
919 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:936:43: note: candidate function not viable: call to __device__ function from __host__ function
936 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:953:39: note: candidate function not viable: call to __device__ function from __host__ function
953 | __MATH_FUNCTIONS_DECL__ long long int min(const long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:958:48: note: candidate function not viable: call to __device__ function from __host__ function
958 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:963:48: note: candidate function not viable: call to __device__ function from __host__ function
963 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:968:48: note: candidate function not viable: call to __device__ function from __host__ function
968 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:973:31: note: candidate function not viable: call to __device__ function from __host__ function
973 | __MATH_FUNCTIONS_DECL__ float min(const float a, const float b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:978:32: note: candidate function not viable: call to __device__ function from __host__ function
978 | __MATH_FUNCTIONS_DECL__ double min(const double a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:983:32: note: candidate function not viable: call to __device__ function from __host__ function
983 | __MATH_FUNCTIONS_DECL__ double min(const float a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:988:32: note: candidate function not viable: call to __device__ function from __host__ function
988 | __MATH_FUNCTIONS_DECL__ double min(const double a, const float b)
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:50:18: error: no matching function for call to 'min' [clang-diagnostic-error]
50 | num_blocks = min(num_blocks, max_blocks);
| ^~~
/home/common_modules/clang-tidy/20.0.0git/lib/clang/20/include/__clang_cuda_math.h:201:16: note: candidate function not viable: call to __device__ function from __host__ function
201 | __DEVICE__ int min(int __a, int __b) { return __nv_min(__a, __b); }
| ^
/usr/local/cuda/include/crt/math_functions.hpp:868:38: note: candidate function not viable: call to __device__ function from __host__ function
868 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:873:38: note: candidate function not viable: call to __device__ function from __host__ function
873 | __MATH_FUNCTIONS_DECL__ unsigned int min(const int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:878:38: note: candidate function not viable: call to __device__ function from __host__ function
878 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:883:34: note: candidate function not viable: call to __device__ function from __host__ function
883 | __MATH_FUNCTIONS_DECL__ long int min(const long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:902:43: note: candidate function not viable: call to __device__ function from __host__ function
902 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:919:43: note: candidate function not viable: call to __device__ function from __host__ function
919 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:936:43: note: candidate function not viable: call to __device__ function from __host__ function
936 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:953:39: note: candidate function not viable: call to __device__ function from __host__ function
953 | __MATH_FUNCTIONS_DECL__ long long int min(const long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:958:48: note: candidate function not viable: call to __device__ function from __host__ function
958 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:963:48: note: candidate function not viable: call to __device__ function from __host__ function
963 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:968:48: note: candidate function not viable: call to __device__ function from __host__ function
968 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:973:31: note: candidate function not viable: call to __device__ function from __host__ function
973 | __MATH_FUNCTIONS_DECL__ float min(const float a, const float b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:978:32: note: candidate function not viable: call to __device__ function from __host__ function
978 | __MATH_FUNCTIONS_DECL__ double min(const double a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:983:32: note: candidate function not viable: call to __device__ function from __host__ function
983 | __MATH_FUNCTIONS_DECL__ double min(const float a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:988:32: note: candidate function not viable: call to __device__ function from __host__ function
988 | __MATH_FUNCTIONS_DECL__ double min(const double a, const float b)
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:62:32: error: no matching function for call to 'min' [clang-diagnostic-error]
62 | int remainder_blocks = min((remainder + threads_per_block - 1) / threads_per_block,
| ^~~
/home/common_modules/clang-tidy/20.0.0git/lib/clang/20/include/__clang_cuda_math.h:201:16: note: candidate function not viable: call to __device__ function from __host__ function
201 | __DEVICE__ int min(int __a, int __b) { return __nv_min(__a, __b); }
| ^
/usr/local/cuda/include/crt/math_functions.hpp:868:38: note: candidate function not viable: call to __device__ function from __host__ function
868 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:873:38: note: candidate function not viable: call to __device__ function from __host__ function
873 | __MATH_FUNCTIONS_DECL__ unsigned int min(const int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:878:38: note: candidate function not viable: call to __device__ function from __host__ function
878 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:883:34: note: candidate function not viable: call to __device__ function from __host__ function
883 | __MATH_FUNCTIONS_DECL__ long int min(const long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:902:43: note: candidate function not viable: call to __device__ function from __host__ function
902 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:919:43: note: candidate function not viable: call to __device__ function from __host__ function
919 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:936:43: note: candidate function not viable: call to __device__ function from __host__ function
936 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:953:39: note: candidate function not viable: call to __device__ function from __host__ function
953 | __MATH_FUNCTIONS_DECL__ long long int min(const long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:958:48: note: candidate function not viable: call to __device__ function from __host__ function
958 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:963:48: note: candidate function not viable: call to __device__ function from __host__ function
963 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:968:48: note: candidate function not viable: call to __device__ function from __host__ function
968 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:973:31: note: candidate function not viable: call to __device__ function from __host__ function
973 | __MATH_FUNCTIONS_DECL__ float min(const float a, const float b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:978:32: note: candidate function not viable: call to __device__ function from __host__ function
978 | __MATH_FUNCTIONS_DECL__ double min(const double a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:983:32: note: candidate function not viable: call to __device__ function from __host__ function
983 | __MATH_FUNCTIONS_DECL__ double min(const float a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:988:32: note: candidate function not viable: call to __device__ function from __host__ function
988 | __MATH_FUNCTIONS_DECL__ double min(const double a, const float b)
| ^
/home/robert_sakana_ai/llm_cuda/experiments/20250202_optimize_b10_s4_e0_sweep/level_1/task_31/b9_s2_31_elu_grid_stride_base/base/base.cu:64:28: error: no matching function for call to 'min' [clang-diagnostic-error]
64 | remainder_blocks = min(remainder_blocks, max_blocks);
| ^~~
/home/common_modules/clang-tidy/20.0.0git/lib/clang/20/include/__clang_cuda_math.h:201:16: note: candidate function not viable: call to __device__ function from __host__ function
201 | __DEVICE__ int min(int __a, int __b) { return __nv_min(__a, __b); }
| ^
/usr/local/cuda/include/crt/math_functions.hpp:868:38: note: candidate function not viable: call to __device__ function from __host__ function
868 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:873:38: note: candidate function not viable: call to __device__ function from __host__ function
873 | __MATH_FUNCTIONS_DECL__ unsigned int min(const int a, const unsigned int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:878:38: note: candidate function not viable: call to __device__ function from __host__ function
878 | __MATH_FUNCTIONS_DECL__ unsigned int min(const unsigned int a, const int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:883:34: note: candidate function not viable: call to __device__ function from __host__ function
883 | __MATH_FUNCTIONS_DECL__ long int min(const long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:902:43: note: candidate function not viable: call to __device__ function from __host__ function
902 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:919:43: note: candidate function not viable: call to __device__ function from __host__ function
919 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const long int a, const unsigned long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:936:43: note: candidate function not viable: call to __device__ function from __host__ function
936 | __MATH_FUNCTIONS_DECL__ unsigned long int min(const unsigned long int a, const long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:953:39: note: candidate function not viable: call to __device__ function from __host__ function
953 | __MATH_FUNCTIONS_DECL__ long long int min(const long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:958:48: note: candidate function not viable: call to __device__ function from __host__ function
958 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:963:48: note: candidate function not viable: call to __device__ function from __host__ function
963 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const long long int a, const unsigned long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:968:48: note: candidate function not viable: call to __device__ function from __host__ function
968 | __MATH_FUNCTIONS_DECL__ unsigned long long int min(const unsigned long long int a, const long long int b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:973:31: note: candidate function not viable: call to __device__ function from __host__ function
973 | __MATH_FUNCTIONS_DECL__ float min(const float a, const float b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:978:32: note: candidate function not viable: call to __device__ function from __host__ function
978 | __MATH_FUNCTIONS_DECL__ double min(const double a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:983:32: note: candidate function not viable: call to __device__ function from __host__ function
983 | __MATH_FUNCTIONS_DECL__ double min(const float a, const double b)
| ^
/usr/local/cuda/include/crt/math_functions.hpp:988:32: note: candidate function not viable: call to __device__ function from __host__ function
988 | __MATH_FUNCTIONS_DECL__ double min(const double a, const float b)
| ^