Issue running tfjs-node-gpu under Windows

TensorFlow.js version

tfjs-node-gpu 1.2.7

Node version

v12.9.0

Describe the problem or feature request

When trying to run a file that only contains the following line: const tf = require('@tensorflow/tfjs-node-gpu');

I will receive the following error:

internal/modules/cjs/loader.js:977
  return process.dlopen(module, path.toNamespacedPath(filename));
                 ^

Error: The specified module could not be found.
\\?\C:\development\JS ML\node_modules\@tensorflow\tfjs-node-gpu\lib\napi-v4\tfjs_binding.node
    at Object.Module._extensions..node (internal/modules/cjs/loader.js:977:18)
    at Module.load (internal/modules/cjs/loader.js:790:32)
    at Function.Module._load (internal/modules/cjs/loader.js:703:12)
    at Module.require (internal/modules/cjs/loader.js:830:19)
    at require (internal/modules/cjs/helpers.js:68:18)
    at Object.<anonymous> (C:\Entwicklung_neu\JS ML\node_modules\@tensorflow\tfjs-node-gpu\dist\index.js:44:16)
    at Module._compile (internal/modules/cjs/loader.js:936:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:947:10)
    at Module.load (internal/modules/cjs/loader.js:790:32)
    at Function.Module._load (internal/modules/cjs/loader.js:703:12)

I tried to find out why there is this strange “\?” prepended to the path but I couldn’t really find out why it is happening. The code will run without any problem when I only use the CPU module (tfjs-node).

I have a CUDA compatible graphics card (GTX960M) and followed the complete installation guide. When installing the module I have only Python 2.7 installed. The installation of the module also seems to work as expected:

> @tensorflow/tfjs-node-gpu@1.2.7 install C:\development\JS ML\node_modules\@tensorflow\tfjs-node-gpu
> node scripts/install.js gpu download

GPU-windows-1.2.7.zip
* Downloading libtensorflow
[==============================] 3508656/bps 100% 0.0s
[==============================] 1862362/bps 100% 0.0s
* Building TensorFlow Node.js bindings
npm WARN js-ml@1.0.0 No description
npm WARN js-ml@1.0.0 No repository field.

added 86 packages from 83 contributors and audited 150 packages in 98.859s
found 0 vulnerabilities

I would be very glad if anyone could help me with this issue.

[nnt0]

@kangyizhang

Okay, i ran node -p "process.arch" and got ia32 back. I then reinstalled Node.js 64 bit, ran the command again and got x64 back. I guess i must have accidentally installed a 32 bit version of node at some point.

I then reinstalled tfjs-node as well as tfjs-node-gpu which completed without any error.

But trying to run either still produced errors. After some testing i found out that everything worked fine in a different directory. After some more testing i found out that a - that i had in a part of a directory caused it to fail. Once i removed the - from the directory everything ran fine.

I am a bit confused about how exactly this - caused everything to fail. I’ve used the same directory with tfjs-node 1.2.1 a while back and it didn’t cause any errors.

Anyhow, thank you very much for helping me figure this out.

[d3x0r]

I had this same error. I further went to bulid @tensorflow/tfjs-node-gyp using node-gyp configure

M:\javascript\tensorflow\node_modules\@tensorflow\tfjs-node-gpu>node-gyp configure
gyp info it worked if it ends with ok
gyp info using node-gyp@5.0.3
gyp info using node@12.9.0 | win32 | x64
gyp info find Python using Python version 2.7.11 found at "c:\tools\Python27\python.exe"
gyp info find VS using VS2015 (14.0) found at:
gyp info find VS "C:\Program Files (x86)\Microsoft Visual Studio 14.0"
gyp info find VS run with --verbose for detailed information
gyp info spawn c:\tools\Python27\python.exe
gyp info spawn args [
gyp info spawn args   'C:\\tools\\nodejs\\node_modules\\node-gyp\\gyp\\gyp_main.py',
gyp info spawn args   'binding.gyp',
gyp info spawn args   '-f',
gyp info spawn args   'msvs',
gyp info spawn args   '-I',
gyp info spawn args   'M:\\javascript\\tensorflow\\node_modules\\@tensorflow\\tfjs-node-gpu\\build\\config.gypi',
gyp info spawn args   '-I',
gyp info spawn args   'C:\\tools\\nodejs\\node_modules\\node-gyp\\addon.gypi',
gyp info spawn args   '-I',
gyp info spawn args   'C:\\Users\\d3x0r\\AppData\\Local\\node-gyp\\Cache\\12.9.0\\include\\node\\common.gypi',
gyp info spawn args   '-Dlibrary=shared_library',
gyp info spawn args   '-Dvisibility=default',
gyp info spawn args   '-Dnode_root_dir=C:\\Users\\d3x0r\\AppData\\Local\\node-gyp\\Cache\\12.9.0',
gyp info spawn args   '-Dnode_gyp_dir=C:\\tools\\nodejs\\node_modules\\node-gyp',
gyp info spawn args   '-Dnode_lib_file=C:\\Users\\d3x0r\\AppData\\Local\\node-gyp\\Cache\\12.9.0\\<(target_arch)\\node.lib',
gyp info spawn args   '-Dmodule_root_dir=M:\\javascript\\tensorflow\\node_modules\\@tensorflow\\tfjs-node-gpu',
gyp info spawn args   '-Dnode_engine=v8',
gyp info spawn args   '--depth=.',
gyp info spawn args   '--no-parallel',
gyp info spawn args   '--generator-output',
gyp info spawn args   'M:\\javascript\\tensorflow\\node_modules\\@tensorflow\\tfjs-node-gpu\\build',
gyp info spawn args   '-Goutput_dir=.'
gyp info spawn args ]
gyp: Undefined variable module_name in binding.gyp while trying to load binding.gyp
gyp ERR! configure error
gyp ERR! stack Error: `gyp` failed with exit code: 1
gyp ERR! stack     at ChildProcess.onCpExit (C:\tools\nodejs\node_modules\node-gyp\lib\configure.js:344:16)
gyp ERR! stack     at ChildProcess.emit (events.js:209:13)
gyp ERR! stack     at Process.ChildProcess._handle.onexit (internal/child_process.js:272:12)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "C:\\tools\\nodejs\\node.exe" "C:\\tools\\nodejs\\node_modules\\node-gyp\\bin\\node-gyp.js" "configure"
gyp ERR! cwd M:\javascript\tensorflow\node_modules\@tensorflow\tfjs-node-gpu
gyp ERR! node -v v12.9.0
gyp ERR! node-gyp -v v5.0.3
gyp ERR! not ok

which I gues scomes form this part of binding.gyp

  , {
      "target_name": "action_after_build",
      "type": "none",
      "dependencies": [ "<(module_name)" ],
      "copies": [
        {
          "files": [ "<(PRODUCT_DIR)/<(module_name).node" ],
          "destination": "<(module_path)"
        }
      }

which gracking down ‘binding.gyp module name…’ seems to be a problem with node-pre-gyp which doesn’t appear to be a thing…

I saw the other notes, and the WINDOWS _TROUBLESHOOTING.md but really none of that applies, bulding other things with node-gyp works fine but then I don’t use <(module_name).