metal: only encode in one command buffer

It's advised a program should only have one command buffer. This slow
inference by ~1 ms on 33B model, but we may avoid it by reusing
previous command queue.
This commit is contained in:
lshzh-ww 2023-07-21 11:17:48 -04:00
parent d924522a46
commit c8e6ef1846

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