diff --git a/src/benchmark/sucoverrelax/actor.ts b/src/benchmark/sucoverrelax/actor.ts
new file mode 100644
index 000000000..7beb59489
--- /dev/null
+++ b/src/benchmark/sucoverrelax/actor.ts
@@ -0,0 +1,64 @@
+/* eslint-disable @typescript-eslint/prefer-readonly */
+// The SOR (Re)actor
+import { Reactor, State } from "../../core/internal";
+
+export class SORActor extends Reactor {
+    constructor(
+        parent: Reactor,
+        pos: number,
+        _value: number,
+        colour: number,
+        nx: number,
+        ny: number,
+        omega: number,
+        sorSource: Reactor,
+        peer: boolean
+    ) {
+        super(parent, "SORActor");
+
+        const x = Math.floor(pos / ny);
+        const y = pos % ny;
+
+        const omegaOverFour = 0.25 * omega;
+        const oneMinusOmega = 1.0 - omega;
+
+        const neighbours = (() => {
+            const calPos = (x: number, y: number): number => (x * ny + y);
+
+            if (x > 0 && x < nx - 1 && y > 0 && y < ny - 1) {
+                return [calPos(x, y + 1),
+                calPos(x + 1, y),
+                calPos(x, y - 1),
+                calPos(x - 1, y)];
+            }
+            if ((x === 0 || x === (nx - 1)) && (y === 0 || y === (ny - 1))) {
+                return [
+                    (x === 0) ? calPos(x + 1, y) : calPos(x - 1, y),
+                    (y === 0) ? calPos(x, y + 1) : calPos(x, y - 1)
+                ];
+            }
+            if ((x === 0 || x === (nx - 1)) || (y === 0 || y === (ny - 1))) {
+                if (x === 0 || x === nx - 1) {
+                    return [
+                        (x === 0) ? calPos(x + 1, y) : calPos(x - 1, y),
+                        calPos(x, y + 1),
+                        calPos(x, y - 1)
+                    ];
+                }
+                return [
+                    (y === 0) ? calPos(x, y + 1) : calPos(x, y - 1),
+                    calPos(x+1, y),
+                    calPos(x-1, y)
+                ];
+            }
+            return [];
+        })();
+    }
+
+    private iter = new State(0);
+    private maxIter = new State(0);
+    private msgRcv = new State(0);
+    private sorActors = new State<Reactor[]>([]);
+    
+    protected 
+}
\ No newline at end of file
diff --git a/src/benchmark/sucoverrelax/peer.ts b/src/benchmark/sucoverrelax/peer.ts
new file mode 100644
index 000000000..65f762682
--- /dev/null
+++ b/src/benchmark/sucoverrelax/peer.ts
@@ -0,0 +1,18 @@
+import { Reactor, State } from "../../core/internal";
+import { SORRunner } from "./runner";
+import { SorBorder } from "./sorutils";
+
+export class SORPeer extends Reactor {
+    sorActors: State<Reactor[]>;
+    constructor(
+        parent: Reactor,
+        s: number,
+        partStart: number,
+        matrixPart: number[][],
+        border: SorBorder,
+        sorSource: SORRunner
+    ) {
+        super(parent, "SORPeer");
+        this.sorActors = new State([]);
+    }
+}
\ No newline at end of file
diff --git a/src/benchmark/sucoverrelax/runner.ts b/src/benchmark/sucoverrelax/runner.ts
new file mode 100644
index 000000000..16e7ab9ad
--- /dev/null
+++ b/src/benchmark/sucoverrelax/runner.ts
@@ -0,0 +1,82 @@
+import { InMultiPort, InPort, OutMultiPort, OutPort, Parameter, Reactor, State, } from "../../core/internal";
+import { SORActor } from "./actor";
+import { SORPeer } from "./peer";
+import { Message, SorBorder, omega } from "./sorutils";
+
+export class SORRunner extends Reactor {
+    protected sorActors: State<Reactor[]>;
+    protected sorPeer: State<Reactor | undefined>;
+
+    protected portToSORActors: OutPort<Message>;
+    protected portToSORPeer: OutPort<Message>;
+    // Unsure if this would work, let's just try......
+    protected portFromSORActor: InPort<Message>;
+    protected portFromSORPeer: InPort<Message>;
+
+    constructor(parent: Reactor, size: number, _randoms: number[][]) {
+        super(parent, "SORRunner");
+        // These are in SorRunner; 
+        const s = size;
+        // In the scala implementation a simple /2 was used.
+        // In JS we might need to enforce some sort of guarantee as it was used to calculate position
+        const part = Math.floor(s / 2);
+        /** These are from Savina. They should be rather irrelevant, actually. */
+        this.sorActors = new State([]);
+        this.sorPeer = new State(undefined);
+
+        /** These are the actual messaging passing mechanism that are synonomous to that of Savina. */
+        // This creates a bunch of ports.
+        this.portToSORActors = new OutPort(this);
+        this.portToSORPeer = new OutPort(this);
+
+        // SorRunner::boot()
+        this.addMutation(
+            [this.startup],
+            [this.sorActors, this.sorPeer],
+            function (this, sorActors, sorPeer) {
+                const myBorder: Reactor[] = [];
+                const randoms = _randoms;
+
+                // In scala, (i <- 0 until s) is loop excluding s.
+                const sorActorsValue = sorActors.get();
+                for (let i = 0; i < s; ++i) {
+                    let c = i % 2;
+                    for (let j = 0; j < part; ++j) {
+                        const pos = i * (part + 1) + j;
+                        c = 1 - c;
+                        // We modify them in bulk, then update the state.
+                        // Unlike in Scala we do not need to initialise the array here, JS supports sparse array.
+                        // I have absolutely no idea why these parametres are called as such......
+                        sorActorsValue[pos] = this.getReactor()._uncheckedAddSibling(
+                            SORActor,
+                            pos, randoms[i][j], c, s, part + 1, omega, this.getReactor(), false
+                        );
+                        // TODO: Make connections
+                        if (j === (part - 1)) {
+                            myBorder[i] = sorActorsValue[pos];
+                        }
+
+                    }
+                }
+                sorActors.set(sorActorsValue);
+
+                const partialMatrix: number[][] = [];
+                for (let i = 0; i < s; ++i) {
+                    for (let j = 0; j < s - part; ++j) {
+                        partialMatrix[i][j] = randoms[i][j + part];
+                    }
+                }
+
+                const sorPeerValue = this.getReactor()._uncheckedAddSibling(
+                    SORPeer,
+                    s, part, partialMatrix, new SorBorder(myBorder), 
+                    // A dirty hack. Maybe this will be removed as ports get added.
+                    this.getReactor() as SORRunner
+                    );
+                sorPeer.set(sorPeerValue);
+                    // TODO: Add connections.
+
+            }
+        );
+    }
+}
diff --git a/src/benchmark/sucoverrelax/sorutils.ts b/src/benchmark/sucoverrelax/sorutils.ts
new file mode 100644
index 000000000..67510ed05
--- /dev/null
+++ b/src/benchmark/sucoverrelax/sorutils.ts
@@ -0,0 +1,82 @@
+import { Reactor } from "../../core/reactor";
+
+// Savina implementation of PRNG
+export class SavinaPRNG {
+    private value: number;
+
+    constructor(value?: number) {
+        this.value = value ?? 1145141919;
+    }
+
+    public nextNumber(): number {
+        this.value = ((this.value * 1309) + 13849) & 65535;
+        return this.value;
+    }
+
+    public nextFloat(): number {
+        return 1.0 / (this.nextNumber() + 1);
+    }
+}
+
+// This is not a recommended way to use JS, but whatever......
+
+export const refVal = [
+    0.000003189420084871275,
+    0.001846644602759566,
+    0.0032099996270638005,
+    0.0050869220175413146,
+    0.008496328291240363,
+    0.016479973604143234,
+    0.026575660248076397,
+    // This is different from the Savina one because JS doesn't have high precision
+    1.026575660248076,
+    2.026575660248076,
+    3.026575660248076
+];
+
+export const jacobi = 100;
+
+export const omega = 1.25;
+
+export function randomMatrix(m: number, n: number): number[][] {
+    const mat = [];
+    const prng = new SavinaPRNG(114514);
+    for (let i = 0; i < m; ++i) {
+        const row = [];
+        for (let j = 0; j < n; ++j) {
+            row.push(prng.nextFloat() * 1e-6);
+        }
+        mat.push(row);
+    }
+    return mat;
+}
+
+export function jgfValidate(gTotal: number, size: number): void {
+    const dev = Math.abs(gTotal - refVal[size]);
+    if (dev > 1.0e-12) {
+        console.log("Validation failed");
+        console.log(`GTotal=${gTotal}; ${refVal[size]}; ${dev}; ${size}`);
+    } else {
+        console.log("Validation OK!");
+    }
+}
+
+export enum MessageTypes {
+    sorBorderMessage,
+    sorStartMessage,
+    sorValueMessage,
+    sorBootMessage,
+    sorResuleMessage
+}
+
+export class SorBorder {
+    borderActors: Reactor[];
+    constructor(borderActors: Reactor[]) {
+        this.borderActors = borderActors;
+    }
+}
+
+export interface Message {
+    messageType: MessageTypes;
+}
+
diff --git a/src/benchmark/sucoverrelax/sucoverrelax.ts b/src/benchmark/sucoverrelax/sucoverrelax.ts
new file mode 100644
index 000000000..652187c56
--- /dev/null
+++ b/src/benchmark/sucoverrelax/sucoverrelax.ts
@@ -0,0 +1,20 @@
+import {
+    type WritablePort,
+    Parameter,
+    InPort,
+    OutPort,
+    State,
+    Action,
+    Reactor,
+    App,
+    TimeValue,
+    Origin,
+    Log
+  } from "../../core/internal";
+
+
+
+
+
+
+
diff --git a/src/benchmark/sucoverrelax/test.ts b/src/benchmark/sucoverrelax/test.ts
new file mode 100644
index 000000000..be109f340
--- /dev/null
+++ b/src/benchmark/sucoverrelax/test.ts
@@ -0,0 +1,86 @@
+import { App, InPort, OutPort, Reactor } from "../../core/internal";
+
+class Master extends Reactor {
+    outp: OutPort<number>;
+
+    constructor(parent: Reactor, receivers: Receiver[]) {
+        super(parent, "");
+        this.outp = new OutPort(this);
+
+        this.addMutation(
+            [this.startup],
+            [this.outp],
+            function(this, outp) {
+                let i = 0;
+                for (const r of receivers) {
+                    console.log(`Master: triggering ${i}`)
+                    this.connect(outp, r.inp);
+                    this.getReactor().writable(outp).set(i++);
+                    this.disconnect(outp, r.inp);
+                }
+            }
+        );
+    }
+}
+
+class Receiver extends Reactor {
+    inp: InPort<number>;
+    outp: OutPort<number>;
+
+    constructor(parent: Reactor, receiver2: Receiver2) {
+        super(parent, "");
+        this.inp = new InPort(this);
+        this.outp = new OutPort(this);
+
+        this.addMutation(
+            [this.inp],
+            [this.inp, this.outp],
+            function(this, inp, outp) {
+                const message = inp.get();
+                if (message == null) {
+                    throw Error("Receiver: Message is null.");
+                }
+                console.log(`Receiver: message ${message}. Sending.`);
+                this.connect(outp, receiver2.inp);
+                this.getReactor().writable(outp).set(message);
+                this.disconnect(outp, receiver2.inp);
+            }
+        );
+    }
+}
+
+class Receiver2 extends Reactor {
+    inp: InPort<number>;
+
+    constructor(parent: Reactor) {
+        super(parent, "");
+        this.inp = new InPort(this);
+
+        this.addReaction(
+            [this.inp],
+            [this.inp], 
+            function (this, inp) {
+                console.log(`Receiver2: received ${inp.get()}`)
+            }
+        );
+    }
+}
+
+class Apppp extends App {
+    master: Master;
+    recvs: Receiver[];
+    recv2: Receiver2;
+
+    constructor() {
+        super(undefined, undefined, false, ()=>(undefined), ()=>(undefined), "");
+        this.recv2 = new Receiver2(this);
+        this.recvs = [];
+        for (let i = 0; i < 10; ++i) {
+            this.recvs.push(new Receiver(this, this.recv2));
+        }
+        this.master = new Master(this, this.recvs);
+    }
+}
+
+const app = new Apppp();
+app._start();
\ No newline at end of file