JOURNAL OF SUPERCOMPUTING

The journal's speed is very fast, taking more than 4 months from initial submission to final acceptance. When I submitted the paper, I used the EM system. It was said that they changed the system later, but my manuscript was still processed in EM. Here is a simple record of the timeline for everyone's reference:

Jun 14, 2022 - Submitted
Jun 14, 2022 - Editor Assignment Pending

This status lasted for 56 days, and then I sent a reminder email. The editor replied on the same day and sent it for review the next day.

Aug 10, 2022 - Under Review
Sep 15, 2022 - Major Review

I received comments from 4 reviewers after major revisions, and my paper was assigned the number 8, which means they probably sent it to 10 people and received feedback from 4. The comments were relatively mild, mainly involving modifications to the abstract, introduction, and conclusion. Two reviewers requested additional experiments. I was given one month to make the revisions. The paper went from 30 pages to 40 pages, and it was quite challenging to make the changes.

Oct 5 - Revision Submitted
Oct 6 - Under Review

The revised version was sent back to the reviewers and it took them more than three weeks to review it.

Nov 3 - Reviews Completed
Nov 4 - Accept

Overall, the speed was very fast, and the difficulty level was moderate. The reviewers and editor were very responsible. I recommend fellow students who are about to graduate to submit their papers to this journal.

From submission to acceptance, it took less than four months for me to receive my first SCI paper as a graduate student. I'm so happy! Here is a breakdown of the timeline:

2021.11.1: submitted
2021.12.1: editor assignment pending
2021.12.21: editor assignment pending; sent a reminder for the second time after almost two months; reviewers were assigned
2021.12.23: under review
2022.1.8: reviews completed; the status remained the same for a few days, but the dates were updated
2022.1.20: minor revision; received feedback from seven reviewers with over thirty comments; took a month to make revisions, and wrote a 15-page response.
2022.2.16: revision submitted
2022.2.18: accepted

My experience:
The time spent in the "editor assignment pending" status was quite long, typically around two months. So, my fellow researchers don't need to worry if you don't receive reviews after two months; just send a reminder email. Once the reviewers are assigned, the review process is relatively fast, with results usually available within a month.
Also, for minor revisions, there is no need to resubmit to the reviewers; the editor decides whether to accept the revisions. Address the reviewer's comments one by one in your response, and generally, acceptance can be expected within 2-3 days.