tensorboard fails to find graph data

[t-kalinowski]

The launched tensorbard instance after calling tensorflow::tensorboard("/tmp/tmplogs") doesn't find anything.

I think I tracked it down to the fact that the tensorboard process launched by the tensorboard() function is launched with a command line that looks like this.

~/.virtualenvs/tf2-rc/bin/pytho ~/.virtualenvs/tf2-rc/bin/tensorboard --logdir tmplogs:/tmp/tmplogs --host 127.0.0.1 --port 7838 --reload_interval 5 --purge_orphaned_data TRUE

It seems like the tmplogs:/tmplogs is making it fail. Tensorboard should simply be passed tensorboard --logdir /tmp/tmplogs (no colon)

Here is a full reprex:

library(tensorflow)


  reticulate::use_virtualenv("tf2-rc", TRUE)
  fn <- tf_function(function(x, y) {
    message("Tracing")
    tf$nn$relu(tf$matmul(x, y))
  })

  unlink(logdir)
  logdir <- "/tmp/tmplogs"
  writer <- tf$summary$create_file_writer(logdir)

  x <- tf$random$uniform(shape(3, 3))
  y <- tf$random$uniform(shape(3, 3))


  tf$summary$trace_on()
  fn(x, y)

  with(writer$as_default(), {
    tensorflow::tf$summary$trace_export(
      name = "func",
      step = 0L,
      profiler_outdir = logdir
    )
  })

  tensorflow::tensorboard(log_dir = logdir)=

[t-kalinowski]

Looking into this a little more, looks like this is a change with version 2.0. Looks like the old --logdir that took names like name:path/to/dir is now called --logdir_spec. The new --logdir just takes a single directory