InterpreterPoolExecutor

<div class="v"><header><b>INTERPRETER POOL</b><span id="state"></span></header><main><div class="pool" id="pool"></div><div class="transfer" id="transfer"></div></main><footer>parallel workers, isolated state</footer></div>

.v{width:min(92vw,660px);height:min(86vh,310px);box-sizing:border-box;padding:clamp(9px,2.5vmin,18px);border:1px solid var(--line);border-radius:14px;background:var(--surface);display:flex;flex-direction:column;gap:7px;color:var(--fg);font:500 clamp(15px,3.2vmin,17px)/1.25 var(--font-sans, sans-serif)}.v header,.v footer{display:flex;justify-content:space-between;align-items:center;gap:8px;white-space:nowrap}.v header b{color:var(--accent);font-size:.9em}.v header span,.v footer{color:var(--muted);font-size:.82em}.v main{flex:1;min-height:0;position:relative;overflow:hidden}.v .mono{font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.v .active{background:var(--accent)!important;color:var(--bg)!important;border-color:var(--accent)!important}.v .muted{opacity:.28} .pool{height:68%;display:flex;align-items:center;justify-content:space-around;gap:7px}.box{width:43%;height:65%;border:1px solid var(--line);border-radius:7px;display:grid;place-items:center;text-align:center;font:600 .82em ui-monospace,monospace}.box em{font-style:normal;color:var(--accent)}.transfer{text-align:center;color:var(--accent);font:600 .8em ui-monospace,monospace}

let n=0;function draw(){document.getElementById("pool").innerHTML=[0,1].map(i=>"<div class=\"box "+(i===n?"active":"")+"\">INTERP "+(i+1)+"<br>state "+(i?"B":"A")+"<br>job "+(n+i+1)+"</div>").join("");document.getElementById("transfer").textContent="separate state · explicit message";document.getElementById("state").textContent="worker "+(n+1);n=1-n}draw();setInterval(draw,1150)