Pete Wyckoff wrote:
You're certainly right that the need to reap even unsignaled sends
is needed for some apps. I'm just looking for a shortcut if my app
does not ever need to find out about send completions. Just to
simplify the code, not expecting anything will go faster or require
less memory.
One way we could go is enhance the verbs API to let an app tell the
driver to post a NOP work request into the send queue once every n
posts, it has some devil in the details but I don't think it impossible
or too ugly...
Anyway, looking in the IB spec (eg section 11.4.1.1 POST SEND REQUEST
table Table 93 Operation Type Matrix) I don't see an evidence that such
opcode exists... the mlx4 driver defines MLX4_NOP_OPCODE as a possible
value to a send WR, so I assume this specific HW supports it. Does
anyone know if NOP is supported by IB and/or iWARP?
Or.
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