Device attributes

Defined in code/simulator.h.

This page documents 2 symbols: 1 enums, 1 functions.

Enums

Signature	Description	Availability	Location	Example
enum cudaDeviceAttr		sim only	simulator.h:2284

Functions

Signature	Description	Availability	Location	Example
inline cudaError_t cudaDeviceGetAttribute(int* value, cudaDeviceAttr attr, int )		sim only	simulator.h:2300	View

Examples

Code from the repository’s example corpus (code\*.cu); the highlighted line is the call site. These blocks are what the View links above open.

cudaDeviceGetAttribute (test_web_pk_mixed_precision.cu:153)

    // Host data. CBuffer::init() draws (rand() & 0xFF) / RAND_MAX for types of
    // 2 bytes or more, which is what both the FP32 and FP16 runs get here.
    std::vector<float> h_x(size), h_y(size), h_ref(size);   // [SIM] was CBuffer<>
    for (int i = 0; i < size; ++i) h_x[i] = float(std::rand() & 0xFF) / float(RAND_MAX);
    for (int i = 0; i < size; ++i) h_y[i] = float(std::rand() & 0xFF) / float(RAND_MAX);
    fma_host(h_x, h_y, h_ref);

    const int n_threads = 256;
    int num_sms = 0, num_blocks_per_sm = 0;
    check(cudaDeviceGetAttribute(&num_sms, cudaDevAttrMultiProcessorCount, 0),
          "cudaDeviceGetAttribute");

    cudaEvent_t start, stop;
    check(cudaEventCreate(&start), "cudaEventCreate(start)");
    check(cudaEventCreate(&stop), "cudaEventCreate(stop)");

    // ---------------- FP32 ----------------
    {
        float *d_x = nullptr, *d_y = nullptr, *d_z = nullptr;
        check(cudaMalloc((void**)&d_x, size * sizeof(float)), "cudaMalloc(d_x)");
        check(cudaMalloc((void**)&d_y, size * sizeof(float)), "cudaMalloc(d_y)");