$ErrorActionPreference='Continue'
$B='C:\AGI\agi-research\build'; $log="$B\e21t_chain.log"
function L($m){ "$(Get-Date -Format o)  $m" | Out-File -FilePath $log -Append -Encoding utf8 }
L "=== e21t start: capture real f16 KV cache (4B) via slot save for bit-level analysis ==="
$out='C:\AGI\agi-research\e21_budget\e21t'; New-Item -ItemType Directory -Force $out | Out-Null
$res="$out\results.jsonl"
$bin='C:\AGI\llama.cpp\fork-29827\build-cuda\bin\llama-server.exe'
$m4='C:\AGI\gguf\q35\Qwen3.5-4B-Q4_K_M.gguf'
$wiki=[IO.File]::ReadAllText('C:\AGI\agi-research\bench\wiki_test.txt')
$hay=[IO.File]::ReadAllText('C:\AGI\agi-research\e21_budget\e21p\hay_trial0.txt')
$docs=@(
 @{tag='wikiA';txt=$wiki.Substring(0,120000)},
 @{tag='wikiB';txt=$wiki.Substring(600000,120000)},
 @{tag='mathA';txt=$hay.Substring(0,75000)}
)
Get-Process llama-server -ErrorAction SilentlyContinue | Stop-Process -Force; Start-Sleep 6
foreach($kv in @('f16','q4_0')){
 $lf="$out\srv_$kv.log"
 $a=@('-m',$m4,'-c','40960','-ngl','99','-fa','on','-np','1','--port','8098','-ctk',$kv,'-ctv',$kv,'-t','8','--slot-save-path',$out)
 $p=Start-Process -FilePath $bin -ArgumentList $a -RedirectStandardError $lf -RedirectStandardOutput ($lf+'.out') -PassThru -NoNewWindow
 $t0=Get-Date; $ok=$false
 while(((Get-Date)-$t0).TotalSeconds -lt 300 -and -not $p.HasExited){ if(Select-String -Path $lf -Pattern 'listening on' -Quiet -ErrorAction SilentlyContinue){$ok=$true;break}; Start-Sleep 3 }
 foreach($d in $docs){
  if($kv -eq 'q4_0' -and $d.tag -ne 'wikiA'){ continue }
  $r=[ordered]@{tag=$d.tag;kv=$kv;loaded=$ok}
  try{
   $body=@{prompt=$d.txt;n_predict=1;temperature=0;cache_prompt=$true;id_slot=0}|ConvertTo-Json -Compress
   [IO.File]::WriteAllText("$out\b.json",$body)
   $c=Invoke-RestMethod -Uri 'http://127.0.0.1:8098/completion' -Method Post -ContentType 'application/json' -InFile "$out\b.json" -TimeoutSec 1200
   $r.n_prompt=$c.timings.prompt_n; $r.prompt_tps=$c.timings.prompt_per_second
   $fn="kv_$($kv)_$($d.tag).bin"
   $sv=Invoke-RestMethod -Uri 'http://127.0.0.1:8098/slots/0?action=save' -Method Post -ContentType 'application/json' -Body (@{filename=$fn}|ConvertTo-Json -Compress) -TimeoutSec 600
   $r.saved=$fn; $r.n_saved=$sv.n_saved; $r.n_written=$sv.n_written
   $null=Invoke-RestMethod -Uri 'http://127.0.0.1:8098/slots/0?action=erase' -Method Post -TimeoutSec 60
  }catch{ $r.err="$_" }
  $r.t=(Get-Date -Format o)
  ($r|ConvertTo-Json -Compress)|Out-File $res -Append -Encoding utf8; L ("result "+($r|ConvertTo-Json -Compress))
 }
 try{Stop-Process -Id $p.Id -Force}catch{}; Start-Sleep 5
}
Get-Process llama-server -ErrorAction SilentlyContinue | Stop-Process -Force
L "=== E21tDONE ==="