migration of new/delete in a CUDA kernel

[zjin-lcf]

Could you please advise how memory allocation using new and delete in a CUDA kernel is mapped to SYCL ?

From CUDA programming guide

The device memory heap has a fixed size that must be specified before any program using malloc(), __nv_aligned_device_malloc() or free() is loaded into the context. A default heap of eight megabytes is allocated if any program uses malloc() or __nv_aligned_device_malloc() without explicitly specifying the heap size.

The following API functions get and set the heap size:

cudaDeviceGetLimit(size_t* size, cudaLimitMallocHeapSize)
cudaDeviceSetLimit(cudaLimitMallocHeapSize, size_t size)
The heap size granted will be at least size bytes. cuCtxGetLimit()and cudaDeviceGetLimit() return the currently requested heap size.

The actual memory allocation for the heap occurs when a module is loaded into the context, either explicitly via the CUDA driver API (see [Module](https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#module)), or implicitly via the CUDA runtime API (see [CUDA Runtime](https://docs.nvidia.com/cuda/cuda-c-programming-guide/index.html#cuda-c-runtime)). If the memory allocation fails, the module load will generate a CUDA_ERROR_SHARED_OBJECT_INIT_FAILED error.

Heap size cannot be changed once a module load has occurred and it does not resize dynamically according to need.

Memory reserved for the device heap is in addition to memory allocated through host-side CUDA API calls such as cudaMalloc().