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| Command | Description |
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| NEW_TEST_CYCLE | ACT announces a new test cycle |
| Cluster testers perform initialization tasks |
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| NEW_TEST_SNIPPET_ROUND | ACT announces a new test round |
| Cluster testers perform initialization tasks |
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| TEST_SNIPPET_DATA test data | ACT broadcasts test data |
| Cluster testers store test data in test snippet buffers |
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| APPLY_TEST (Group_Id, Cluster_Id, Core_Id) | ACT broadcasts APPLY_TEST command |
| Cluster testers with matching (Group_Id, Cluster_Id) apply test to a processing core with matching Core_Id in their corresponding cluster |
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| END_TEST_SNIPPET_ROUND | ACT announces the end of the current test round |
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| END_TEST_CYCLE | ACT announces the end of the current test cycle |
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| START_DIAGNOSIS | ACT announces the start of diagnosis phase |
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CHECK_AND_DIAGNOSE
(Group_Id, Cluster_Id, Core_Id) | ACT asks specific cluster testers about results of testing. In the case of fault report, ACT broadcasts hierarchical REPORT_STAUS commands to find suspicious test group, test cluster, and processing core |
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APPLY_RETEST
(Group_Id, Cluster_Id, Core_Id) | ACT requests retesting of a suspicious processing core
The target cluster tester executes retesting command |
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CHECK_SUSPICIOUS_CUT
(Group_Id, Cluster_Id, Core_Id) | ACT inquires about health status of a suspicious processing core after retesting |
| The responsible cluster tester reports the status |
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DISABLE_CORE
(Group_Id, Cluster_Id, Core_Id) | ACT announces disabling of a specific processing core |
| The responsible cluster tester marks that core as disabled |
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REPORT_STATUS
(Group_Id, Cluster_Id, Core_Id) | Targeted cluster tester(s) report the last status of its (their) corresponding cluster(s) |
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