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StableLM-3B-4E1T-Embeddings-Flow.json
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"func": "(async () => {\n let Prompt = (msg.payload || '').trim()\n if (Prompt === '') {\n msg.payload = 'empty or missing prompt'\n node.send([null,msg])\n node.done()\n return\n }\n\n/**** retrieve settings or provide defaults ****/\n\n let Seed = parseInt(msg.seed,10)\n if (isNaN(Seed)) { Seed = -1 }\n\n let Threads = parseInt(msg.threads,10)\n if (isNaN(Threads)) { Threads = 4 }\n Threads = Math.max(1,Threads)\n Threads = Math.min(Threads,Math.max(1,os.cpus().length))\n\n let ContextLength = parseInt(msg.context,10)\n if (isNaN(ContextLength)) { ContextLength = 512 }\n ContextLength = Math.max(0,Math.min(ContextLength,2048))\n\n Prompt = Prompt.replace(/\"/g,'\\\\\"')\n\n/**** retrieve UserDir - crash if not a folder ****/\n\n let UserDir = (global.get('UserDir') || '').trim()\n if (UserDir === '') { UserDir = process.env.HOME + '/.node-red' }\n\n if (! fs.statSync(UserDir,{ throwIfNoEntry:false })?.isDirectory()) {\n throw new Error(\n 'the given \"UserDir\" (\"' + UserDir + '\") is either missing or ' +\n 'not a folder - exiting'\n )\n }\n\n/**** combine all these settings into a command ****/\n\n let Command = ( 'cd \"' + UserDir + '\" && ' +\n './llama-embeddings --model ./stablelm-3b-4e1t-Q8_0.bin --mlock ' +\n ' --ctx_size ' + ContextLength +\n ' --threads ' + Threads +\n ' --seed ' + Seed +\n ' --prompt \"' + encoded(Prompt) + '\"'\n )\n const Options = {\n cwd:UserDir\n }\n\n/**** extract actual reponse from command output ****/\n\n function ResponseFrom (Text) {\n let HeaderLength = Text.indexOf('system_info')\n Text = Text.slice(HeaderLength + 1)\n .replace(/^[^\\n]*\\n/,'')\n\n let TrailerIndex = Text.indexOf('\\n\\nllama_print_timings')\n Text = Text.slice(0,TrailerIndex)\n\n return Text\n }\n\n/**** now calculate embeddings for the given prompt ****/\n\n node.status({ fill:'yellow', shape:'ring', text:'running' })\n\n const ShellProcess = child_process.exec(Command,Options)\n let stdout = ''\n for await (const Chunk of ShellProcess.stdout) {\n stdout += Chunk\n }\n\n let stderr = ''\n for await (const Chunk of ShellProcess.stderr) {\n stderr += Chunk\n }\n\n const ExitCode = (await new Promise((resolve) => {\n ShellProcess.on('close', resolve)\n })) || 0\n if (ExitCode !== 0) {\n node.status({ fill:'red', shape:'dot', text:'ExitCode = ' + ExitCode })\n\n msg.statusCode = 500 + ExitCode\n msg.payload = stderr\n } else {\n node.status({ fill:'green', shape:'dot', text:'finished' })\n\n stdout = stdout.trim()\n\n msg.statusCode = (stdout === '' ? 204 : 200)\n msg.payload = ResponseFrom(stdout)\n }\n\n node.send([msg,null])\n node.done()\n\n/**** encoded ****/\n\n function encoded (Text) {\n return Text.replace(/'/g,\"'\\\"'\\\"'\")\n }\n})()\n",
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