1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146

use std::num::NonZeroU64;

use serde::{Deserialize, Serialize};
use serde_state::DeserializeState;

use necsim_core_bond::{ClosedUnitF64, PositiveF64};
use necsim_partitioning_core::partition::{Partition, PartitionSize};

use necsim_impls_no_std::parallelisation::independent::{DedupCache, EventSlice, RelativeCapacity};

#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct MonolithicParallelismMode {
    pub event_slice: EventSlice,
}

#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct IsolatedParallelismMode {
    pub event_slice: EventSlice,
    pub partition: Partition,
}

#[derive(Clone, Debug, Serialize, Deserialize)]
#[serde(deny_unknown_fields)]
pub struct ProbabilisticParallelismMode {
    #[serde(alias = "communication")]
    pub communication_probability: ClosedUnitF64,
}

#[derive(Clone, Debug, Serialize, Deserialize)]
pub enum ParallelismMode {
    Monolithic(MonolithicParallelismMode),
    IsolatedIndividuals(IsolatedParallelismMode),
    IsolatedLandscape(IsolatedParallelismMode),
    Individuals,
    Landscape,
    Probabilistic(ProbabilisticParallelismMode),
}

impl<'de> DeserializeState<'de, PartitionSize> for ParallelismMode {
    fn deserialize_state<D>(
        partition_size: &mut PartitionSize,
        deserializer: D,
    ) -> Result<Self, D::Error>
    where
        D: serde::de::Deserializer<'de>,
    {
        use serde::de::Error;

        let parallelism_mode = ParallelismMode::deserialize(deserializer)?;

        match parallelism_mode {
            ParallelismMode::Monolithic(..)
            | ParallelismMode::IsolatedIndividuals(..)
            | ParallelismMode::IsolatedLandscape(..)
                if !partition_size.is_monolithic() =>
            {
                Err(D::Error::custom(format!(
                    "parallelism_mode {parallelism_mode:?} is incompatible with non-monolithic \
                     partitioning."
                )))
            },
            ParallelismMode::Individuals
            | ParallelismMode::Landscape
            | ParallelismMode::Probabilistic(..)
                if partition_size.is_monolithic() =>
            {
                Err(D::Error::custom(format!(
                    "parallelism_mode {parallelism_mode:?} is incompatible with monolithic \
                     partitioning."
                )))
            },
            partition_mode => Ok(partition_mode),
        }
    }
}

#[derive(Clone, Debug, Serialize)]
#[allow(clippy::module_name_repetitions)]
pub struct IndependentArguments {
    pub delta_t: PositiveF64,
    pub step_slice: NonZeroU64,
    pub dedup_cache: DedupCache,
    pub parallelism_mode: ParallelismMode,
}

impl<'de> DeserializeState<'de, PartitionSize> for IndependentArguments {
    fn deserialize_state<D>(
        partition_size: &mut PartitionSize,
        deserializer: D,
    ) -> Result<Self, D::Error>
    where
        D: serde::de::Deserializer<'de>,
    {
        let raw = IndependentArgumentsRaw::deserialize_state(partition_size, deserializer)?;

        let parallelism_mode = match raw.parallelism_mode {
            Some(parallelism_mode) => parallelism_mode,
            None => {
                if partition_size.is_monolithic() {
                    ParallelismMode::Monolithic(MonolithicParallelismMode {
                        event_slice: EventSlice::Relative(RelativeCapacity {
                            factor: PositiveF64::new(2.0_f64).unwrap(),
                        }),
                    })
                } else {
                    ParallelismMode::Probabilistic(ProbabilisticParallelismMode {
                        communication_probability: ClosedUnitF64::new(0.25_f64).unwrap(),
                    })
                }
            },
        };

        Ok(IndependentArguments {
            delta_t: raw.delta_t,
            step_slice: raw.step_slice,
            dedup_cache: raw.dedup_cache,
            parallelism_mode,
        })
    }
}

#[derive(Debug, DeserializeState)]
#[serde(default, deny_unknown_fields)]
#[serde(deserialize_state = "PartitionSize")]
struct IndependentArgumentsRaw {
    delta_t: PositiveF64,
    step_slice: NonZeroU64,
    dedup_cache: DedupCache,
    #[serde(deserialize_state)]
    parallelism_mode: Option<ParallelismMode>,
}

impl Default for IndependentArgumentsRaw {
    fn default() -> Self {
        Self {
            delta_t: PositiveF64::new(2.0_f64).unwrap(),
            step_slice: NonZeroU64::new(10_u64).unwrap(),
            dedup_cache: DedupCache::Relative(RelativeCapacity {
                factor: PositiveF64::new(1.0_f64).unwrap(),
            }),
            parallelism_mode: None,
        }
    }
}