Tensorboard cant read event files that were created with ProtoBuf v0.7

[nrxszvo]

trafficstars

After updating from ProtoBuf v0.6.1 to v0.7, tensorboard reports no data found in my logging directory. Reverting to ProtoBuf v0.6.1 fixes the problem.

Julia TensorFlow v0.10.4 Tensorboard v1.10 (also repro'd with v1.12)

My logging code:

mutable struct TBWriter <: AbstractTrainingLogger
    writer::TensorFlow.summary.FileWriter
end
            
function make_tb_writer(logdir::AbstractString="tb_logs")
    mkpath(logdir)
    writer = TensorFlow.summary.FileWriter(logdir)
    TBWriter(writer)
end

function log_scalar_to_tb(tbw::TBWriter, name::AbstractString, value::Number, step::Int)
    sv = TensorFlow.tensorflow.Summary_Value(tag=name, simple_value=value)
    s = TensorFlow.tensorflow.Summary(value=[sv])
    write(tbw.writer, s, step)
end

[tanmaykm]

It would help if you could share some minimal datafile/code to reproduce this error?

[nrxszvo]

Sure, using the functions defined above:

julia> using Pkg
julia> Pkg.add("TensorFlow")
julia> writer = make_tb_writer("repro")
julia> log_scalar_to_tb(writer, "test", 1, 1)

tensorboard --logdir repro

The webpage for the tensorboard session displays:

Then revert to ProtoBuf 0.6.1

julia> using Pkg
julia> Pkg.add(PackageSpec(name="ProtoBuf", version="0.6.1"))
julia> using TensorFlow
julia> writer = make_tb_writer("revert")
julia> log_scalar_to_tb(writer, "test", 1, 1)

tensorboard --logdir revert

The webpage for the tensorboard session displays:

Tensorboard event files here: tb_event_files.zip

[Drvi]

Please try to migrate to ProtoBuf.jl 1.0, older versions are not supported anymore.