Function cudaMalloc 

pub unsafe extern "C" fn cudaMalloc(
    devPtr: *mut *mut c_void,
    size: size_t,
) -> cudaError_t

Allocate memory on the device.

Allocates size bytes of linear memory on the device and returns in *devPtr a pointer to the allocated memory. The allocated memory is suitably aligned for any kind of variable. The memory is not cleared. cudaMalloc returns cudaErrorMemoryAllocation in case of failure.

The device version of cudaFree cannot be used with a *devPtr allocated using the host API, and vice versa.

Note:

• Note that this function may also return error codes from previous, asynchronous launches.
• Note that this function may also return cudaErrorInitializationError, cudaErrorInsufficientDriver or cudaErrorNoDevice if this call tries to initialize internal CUDA RT state.
• Note that as specified by cudaStreamAddCallback no CUDA function may be called from callback. cudaErrorNotPermitted may, but is not guaranteed to, be returned as a diagnostic in such case.

See also:

cudaMallocPitch, cudaFree, cudaMallocArray, cudaFreeArray, cudaMalloc3D, cudaMalloc3DArray, cudaMallocHost ( C API), cudaFreeHost, cudaHostAlloc, cuMemAlloc.

Parameters

• devPtr: Pointer to allocated device memory.
• size: Requested allocation size in bytes.