hipHostAlloc

cubecl_hip_sys

Function hipHostAlloc 

Source 
pub unsafe extern "C" fn hipHostAlloc(
    ptr: *mut *mut c_void,
    size: usize,
    flags: c_uint,
) -> hipError_t
Expand description

@brief Allocate device accessible page locked host memory

@param[out] ptr Pointer to the allocated host pinned memory @param[in] size Requested memory size in bytes @param[in] flags Type of host memory allocation see below

If size is 0, no memory is allocated, *ptr returns nullptr, and hipSuccess is returned.

Flags:

  • #hipHostAllocDefault Default pinned memory allocation on the host.
  • #hipHostAllocPortable Memory is considered allocated by all contexts.
  • #hipHostAllocMapped Map the allocation into the address space for the current device.
  • #hipHostAllocWriteCombined Allocates the memory as write-combined.
  • #hipHostAllocUncached Allocate the host memory on extended fine grained access system memory pool

@return #hipSuccess, #hipErrorOutOfMemory, #hipErrorInvalidValue