Remove unused configuration options for nOS-V
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# Shared memory configuration
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[shared_memory]
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# Name of the shared memory section. This can be leveraged to create two separate nOS-V instances
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# in the same system. Generally this has to remain unchanged
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name = "nosv-ovni"
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# Size of the shared memory section. Choose powers of two
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size = "2G"
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# Start of the shared memory mapping
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# This option should be memory address codified in hexadecimal (start with 0x)
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start = 0x0000200000000000
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# Scheduler configuration
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# These parameters allow to fine tune the scheduler's behaviour
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[scheduler]
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# Number of logical CPUs mapped to a single scheduler SPSC for ready tasks
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# Minimum is 1, there is no maximum. Try to choose numbers that divide evenly the number
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# of CPUs in the system.
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# A lower number will yield more scheduling throughput and is adequate when using
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# multiple task creator processes.
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# A higher number will yield lower scheduling latency and is adequate when using one or few
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# task creator processes
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cpus_per_queue = 1
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# Number of tasks that are grabbed off of a queue when processing ready tasks.
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# Lowering the number may be better if there are very few ready tasks during execution.
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# Increasing the batch may help if your CPU has bad single-thread performance.
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# In general, the default value of 64 should result in a good trade-off
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queue_batch = 64
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# Scheduler quantum in ns. This is a guideline for how long should we execute one process' tasks
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# until we have to switch to the next one. However, as nOS-V tasks are not preemptable, it isn't enforced.
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# This parameter is specially relevant for the nosv_schedpoint function, which will try to schedule
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# each quantum ns.
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# A lower value will cause more inter-process context switches but may provide more uniform progress,
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# while a higher value will minimize context switches but may stall applications for longer
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quantum_ns = 20000000 # nanoseconds
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# Size of the queues that are used to place tasks into the scheduler
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# A good value should be a multiple of queue_batch
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in_queue_size = 256
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# CPU Governor configuration
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# Controls the policy that nOS-V follows to block idle CPUs to save energy and resources
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[governor]
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# There is a choice between three different governor policies:
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# - hybrid: CPUs will spin for governor.spins before going to sleep when no work is available
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# - idle: CPUs will sleep immediately when no work is available
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# - busy: CPUs will never sleep
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# In general, use idle when targeting minimum power usage, and busy when targeting maximum performance
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# The default is hybrid as it provides a good balance between power and performance.
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policy = "hybrid"
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# Number of times a CPU will spin without sleeping in the "hybrid" policy.
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# When "idle" or "busy" are selected, this setting is ignored
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spins = 10000
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# Debug options
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[debug]
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# Dump all the configuration options nOS-V is running with, its final parsed values and the
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# path of the config file being used
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dump_config = false
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# Hardware Counters configuration
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[hwcounters]
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# Whether to print verbose information if a backend is enabled
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verbose = false
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# The enabled HWCounter backends. Possible options: "papi", "none"
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backend = "none"
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# The list of PAPI counters to read. By default only "PAPI_TOT_INS" and "PAPI_TOT_CYC"
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papi_events = [
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"PAPI_TOT_INS",
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"PAPI_TOT_CYC"
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]
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# Enabling turbo will cause nOS-V to set architecture-specific optimization flags on every created
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# or attached threads. In x86, this will cause the FTZ and DAZ flags of the SSE FPU to be enabled,
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# causing a significant performance increase in floating-point applications, but disabling IEEE-754
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# compatibility.
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[turbo]
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enabled = false
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# Monitoring cappabilities and configuration.
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[monitoring]
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enabled = false
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# Whether to print verbose information if monitoring is enabled
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verbose = false
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instrumentation.version = "ovni"
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