Really starting to like #15. I like the dark, well defined color in the box, the subtle gradient, the glow around the cloud. Nice job!
I feel the community aspect is missing. Any ideas around how to drop this into #15?
We are using the word HPC twice in the same logo. Kind of odd. And if I was to use just the rectangular icon and not the HPC Experiment under it, then you can't tell what the name of the project is anymore.
Can you change the color of the HPC Experiment to the darkest shade you have in the rectangular shape above? The HPC Experiment text is a bit washed out.
The new entries I've uploaded feature a reference to the community aspect, using an element that appeals to the masses as a standard symbol for community and inter connectivity. I can combine any design with another if you want to see some combinations or edits.
Thank you again for your time and I appreciate the feedback.