About cufile batch read/write test support

[lvjing421]

Hi,

I tried to use iodepth_batch approach to improve cufile read/write performance with small IO, but it does not help. As documented in https://docs.nvidia.com/gpudirect-storage/api-reference-guide/index.html#known-limitations-of-cufile-batch-apis, I wonder if nvidia gds batch read/write is supported in fio test - "The fio libcufile engine uses the sync API" by axboe.