[SYCL][E2E][USM] Add P2P USM residency test for L0 v2 adapter#21944
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[SYCL][E2E][USM] Add P2P USM residency test for L0 v2 adapter#21944ldorau wants to merge 7 commits into
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- Skip peers with disabled P2P in makeProvider (USM pool creation) - Add urUsmP2PEnablePeerAccessExp / urUsmP2PDisablePeerAccessExp - Track per-device peer status in ur_device_handle_t_::peers[] - Update existing USM pool residency on P2P enable/disable Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
- Fill in three placeholder multi-device tests in memory_residency.cpp - Tests verify P2P-driven residency: absent-on-peer without P2P, enable/disable state machine checks, end-to-end data transfer Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
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is there any check that now we can not access allocations on srcDev?
I see only one memcpy in time when it was enabled
Extract common logic from ext_oneapi_enable_peer_access and ext_oneapi_disable_peer_access into a templated p2pAccessHelper function to avoid code duplication. Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
The disablePeerAccessStateMachineAndSourceAllocationPersists test was failing intermittently because deferred frees from the preceding test complete asynchronously, causing UR_DEVICE_INFO_GLOBAL_MEM_FREE to report more free memory than the baseline captured at the start of the test. Remove the unreliable source-device free-memory assertion and the allocation it required, keeping only the state-machine checks (disable succeeds, double-disable returns UR_RESULT_ERROR_INVALID_OPERATION). The source-device allocation property is already covered by allocatingDeviceMemoryWillResultInOOM which runs first in isolation.
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Adds sycl/test-e2e/USM/P2P/p2p_usm_residency.cpp to verify that the Level Zero v2 adapter restricts USM device memory residency to only those peer devices for which P2P access has been explicitly enabled via ext_oneapi_enable_peer_access. Phase 1 (P2P disabled): allocates 1 MB on dev0 and checks that dev1 free memory does not decrease, proving the allocation is not made resident on dev1. Phase 2 (P2P enabled): allocates 1 MB on dev0 and checks that dev1 free memory decreases by at least the allocation size, proving the allocation is resident on dev1. Also adds the 'two-or-more-gpu-devices' lit feature to lit.cfg.py, set when sycl-ls reports at least two GPU devices. The test uses this feature to skip on single-GPU machines. Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
…isable Add Phase 3 to p2p_usm_residency.cpp that enables then disables P2P access from dev1 to dev0, then attempts a memcpy via dev1's queue. The test passes if the memcpy throws an exception or if the copied data does not match the original fill pattern, confirming that ext_oneapi_disable_peer_access actually revokes access.
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It adds a SYCL e2e test to #21889