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The nodejs progress bar will wrap endlessly if outputs > placeholder length #1468

@FremyCompany

Description

@FremyCompany

TensorFlow.js version

1.0.2

Describe the problem or feature request

When the outputs on the right side of the sidebar exceed the size reserved for it in the template, the line wraps, and then the progress bar is redrawn at every step again.

There is a proposed fix for this in the library you use to draw the progress bar, but it would probably also be possible to work around it inside tensorflow by ensuring the name of the placeholder is padded so it is long enough to cover the expected size of its replacement.

visionmedia/node-progress#190

Code to reproduce the bug / link to feature request

    let input = tf.input({ shape: [max_len, recogized_letters.length] });
    let $ = tf.layers.flatten().apply(input);
    let $1 = tf.layers.dense({ name:"hi_this_is_the_first_model", units: 2}).apply($);
    let $2 = tf.layers.dense({ name:"hi_this_is_the_second_model", units: 2}).apply($);
    let model = tf.model({ inputs: [input], outputs: [ $1, $2 ] });

    model.compile({
        loss: 'meanSquaredError',
        optimizer: 'adam',
        metrics: ['acc']
    });

    await model.fit(xTrain, [yTrain,yTrain], {
        epochs: 2,
        batchSize: 1,
        validationSplit: 0.2,
    });

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