[WIP DNM] levelzero: use zesInit() when available #594
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When zesInit() is available (starting in specs 1.5), we don't need all the stuff to set ZES_ENABLE_SYSMAN=1 in the environment anymore. This assumes that zesInit() works for real, which was not the case in first compute-runtime releases (it returned "unsupported"). Those releases won't be supported anymore because they'd need a runtime-check at configure time to find out that the ZES_ENABLE_SYSMAN=1 stuff must be enabled. Only use a compile-check to switch between zesInit() and ZES_ENABLE_SYSMAN=1, and tell users to avoid those L0 runtime versions where zesInit() fails. Signed-off-by: Brice Goglin <Brice.Goglin@inria.fr>
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Don't merge until a compute-runtime release supports zesInit(). Blacklist the releases with unsupported zesInit() in the error messages before merging this PR.