KNIME workflow is non-responsive

KNIME version 4.3.4, My dropdowns aren’t working–they open up blank white spaces. It was updated per the july 2021 version. I have the same problem when right-clicking the nodes–just blank white space.

When the main dropdown menus were still working I tried to publish a backup workflow to dropbox, but that dialog box opened blank white.

Most other programs seem to be working okay on my computer (just an I-7, two core, 12 gig RAM) which I hope to upgrade soon.

I have opened and closed KNIME two dozen times in the last three days–often having to use MS Task Manager because the whole KNIME screen simply locks and can’t be closed otherwise.

I also shut the computer down many times hoping to clear any RAM that may be causing the KNIME malfunction.

I downloaded version 4.4, but am a little terrified to install it, as it requires I fully remove my current version first. The crashing workflow is a year’s effort and would essentially be impossible to recreate.

thanks

Hi @creedsmith,

I don’t have an answer re your question but you can actually install 4.4 alongside 4.3.4 if you DON’T use the installer. You can download 4.4 as a zip and extract it to a new location. Create a shortcut to knime in that new location so you have a 4.4 icon as well as your 4.3.4 version. When you run it, you can tell it a new data area to use which is separate to the one used by 4.3.4.

At that point 4.4 won’t have access to your previous workflows but you can then import workflows into 44.4. II I find dit best to export from 44.3.4 files I wanted and import into 4.4, but you may want to use a different approach.

Not only do I have both version installed on Windows 10 but sometimes I have both running at the same time…

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Hi Brian, I may give that a try. In the mean time I fired up an older computer, installed 4.4, then pulled the workflow into dropbox and have a safe backup.

My workflow has become pretty big but all the parts are fully interrelated and feed off each other. Is it possible for a workflow to be too big and grind to a halt?

thanks

Hello @creedsmith,

memory can an issue here. Have you had any progress with your workflow and/or v4.4?

Br,
Ivan

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Hi @ipazin, I installed v4.4 on a separate laptop, then pulled the KWF into it. I still have similar problems of the system moving very slowly, very often locking up, and having to use MS control-alt-delete to reset the stalled Knime screen. On my primary computer, still at the older version of Knime, yea the whole thing locks up dozens of times each day and I lose everything new since prior saves.

So, on my latest series of WF additions I tried a new tabbed workflow instead of adding to the existing WF. The speed of the functions was definitely faster in the new WF, but I still get the locking up of the screen and loss of recent changes.

I track the CPU usage and the RAM usage sometimes, and no doubt my WF is clocking the CPU at 80%-100% often, especially if I get a particular series of nodes all completed for what I want, then copy and paste them for reuse. The RAM also seems to run at 60% to 80% during these tactics.

I am shopping for a machine with the most recent version of intel i9 or a AMD Ryzen 9, with 32 gig of RAM–but it’s crazy the prices–and nobody actually has them in stock. So you can pay and hope, but they can’t even tell you if/when they may actually ship.

So still experimenting with limping through my projects with the older i7 and 16 gig RAM at this point.

thanks

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Hello @creedsmith,

I see. Tnx for additional explanation. Indeed seems you could use a new machine. Especially if dealing with lots of data :slight_smile:

Br,
Ivan

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