sycl: add GGML_SYCL_USE_ASYNC_MEM_OP env toggle (#22153)
* sycl: add GGML_SYCL_USE_ASYNC_MEM_OP env toggle
Signed-off-by: Chun Tao <chun.tao@intel.com>
* Use async mem ops for correctness when SYCL graphs are explicitly on.
Signed-off-by: Tao, Chun <chun.tao@intel.com>
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Signed-off-by: Chun Tao <chun.tao@intel.com>
Signed-off-by: Tao, Chun <chun.tao@intel.com>
Co-authored-by: Chun Tao <chun.tao@intel.com>
